terraform/command/init.go

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package command
import (
"context"
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"fmt"
"log"
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"os"
command: new cache directory .terraform/providers for providers Terraform v0.10 introduced .terraform/plugins as a cache directory for automatically-installed plugins, Terraform v0.13 later reorganized the directory structure inside but retained its purpose as a cache. The local cache used to also serve as a record of specifically which packages were selected in a particular working directory, with the intent that a second run of "terraform init" would always select the same packages again. That meant that in some sense it behaved a bit like a local filesystem mirror directory, even though that wasn't its intended purpose. Due to some unfortunate miscommunications, somewhere a long the line we published some documentation that _recommended_ using the cache directory as if it were a filesystem mirror directory when working with Terraform Cloud. That was really only working as an accident of implementation details, and Terraform v0.14 is now going to break that because the source of record for the currently-selected provider versions is now the public-facing dependency lock file rather than the contents of an existing local cache directory on disk. After some consideration of how to move forward here, this commit implements a compromise that tries to avoid silently doing anything surprising while still giving useful guidance to folks who were previously using the unsupported strategy. Specifically: - The local cache directory will now be .terraform/providers rather than .terraform/plugins, because .terraform/plugins is effectively "poisoned" by the incorrect usage that we can't reliably distinguish from prior version correct usage. - The .terraform/plugins directory is now the "legacy cache directory". It is intentionally _not_ now a filesystem mirror directory, because that would risk incorrectly interpreting providers automatically installed by Terraform v0.13 as if they were a local mirror, and thus upgrades and checksum fetches from the origin registry would be blocked. - Because of the previous two points, someone who _was_ trying to use the legacy cache directory as a filesystem mirror would see installation fail for any providers they manually added to the legacy directory. To avoid leaving that user stumped as to what went wrong, there's a heuristic for the case where a non-official provider fails installation and yet we can see it in the legacy cache directory. If that heuristic matches then we'll produce a warning message hinting to move the provider under the terraform.d/plugins directory, which is a _correct_ location for "bundled" provider plugins that belong only to a single configuration (as opposed to being installed globally on a system). This does unfortunately mean that anyone who was following the incorrectly-documented pattern will now encounter an error (and the aforementioned warning hint) after upgrading to Terraform v0.14. This seems like the safest compromise because Terraform can't automatically infer the intent of files it finds in .terraform/plugins in order to decide automatically how best to handle them. The internals of the .terraform directory are always considered implementation detail for a particular Terraform version and so switching to a new directory for the _actual_ cache directory fits within our usual set of guarantees, though it's definitely non-ideal in isolation but okay when taken in the broader context of this problem, where the alternative would be silent misbehavior when upgrading.
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"path/filepath"
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"strings"
"github.com/hashicorp/hcl/v2"
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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"github.com/hashicorp/terraform-config-inspect/tfconfig"
svchost "github.com/hashicorp/terraform-svchost"
"github.com/posener/complete"
"github.com/zclconf/go-cty/cty"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/backend"
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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backendInit "github.com/hashicorp/terraform/backend/init"
"github.com/hashicorp/terraform/configs"
"github.com/hashicorp/terraform/configs/configschema"
"github.com/hashicorp/terraform/internal/getproviders"
"github.com/hashicorp/terraform/internal/providercache"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/terraform"
"github.com/hashicorp/terraform/tfdiags"
tfversion "github.com/hashicorp/terraform/version"
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)
// InitCommand is a Command implementation that takes a Terraform
// module and clones it to the working directory.
type InitCommand struct {
Meta
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// getPlugins is for the -get-plugins flag
getPlugins bool
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}
func (c *InitCommand) Run(args []string) int {
var flagFromModule string
var flagBackend, flagGet, flagUpgrade bool
var flagPluginPath FlagStringSlice
var flagVerifyPlugins bool
flagConfigExtra := newRawFlags("-backend-config")
args = c.Meta.process(args)
cmdFlags := c.Meta.extendedFlagSet("init")
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cmdFlags.BoolVar(&flagBackend, "backend", true, "")
cmdFlags.Var(flagConfigExtra, "backend-config", "")
cmdFlags.StringVar(&flagFromModule, "from-module", "", "copy the source of the given module into the directory before init")
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cmdFlags.BoolVar(&flagGet, "get", true, "")
cmdFlags.BoolVar(&c.getPlugins, "get-plugins", true, "")
cmdFlags.BoolVar(&c.forceInitCopy, "force-copy", false, "suppress prompts about copying state data")
cmdFlags.BoolVar(&c.Meta.stateLock, "lock", true, "lock state")
cmdFlags.DurationVar(&c.Meta.stateLockTimeout, "lock-timeout", 0, "lock timeout")
cmdFlags.BoolVar(&c.reconfigure, "reconfigure", false, "reconfigure")
cmdFlags.BoolVar(&flagUpgrade, "upgrade", false, "")
cmdFlags.Var(&flagPluginPath, "plugin-dir", "plugin directory")
cmdFlags.BoolVar(&flagVerifyPlugins, "verify-plugins", true, "verify plugins")
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cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
return 1
}
var diags tfdiags.Diagnostics
if len(flagPluginPath) > 0 {
c.pluginPath = flagPluginPath
c.getPlugins = false
}
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// Validate the arg count
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args = cmdFlags.Args()
if len(args) > 1 {
c.Ui.Error("The init command expects at most one argument.\n")
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cmdFlags.Usage()
return 1
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}
if err := c.storePluginPath(c.pluginPath); err != nil {
c.Ui.Error(fmt.Sprintf("Error saving -plugin-path values: %s", err))
return 1
}
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// Get our pwd. We don't always need it but always getting it is easier
// than the logic to determine if it is or isn't needed.
pwd, err := os.Getwd()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error getting pwd: %s", err))
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return 1
}
// If an argument is provided then it overrides our working directory.
path := pwd
if len(args) == 1 {
path = args[0]
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}
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// This will track whether we outputted anything so that we know whether
// to output a newline before the success message
var header bool
if flagFromModule != "" {
src := flagFromModule
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empty, err := configs.IsEmptyDir(path)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error validating destination directory: %s", err))
return 1
}
if !empty {
c.Ui.Error(strings.TrimSpace(errInitCopyNotEmpty))
return 1
}
c.Ui.Output(c.Colorize().Color(fmt.Sprintf(
"[reset][bold]Copying configuration[reset] from %q...", src,
)))
header = true
hooks := uiModuleInstallHooks{
Ui: c.Ui,
ShowLocalPaths: false, // since they are in a weird location for init
}
initDiags := c.initDirFromModule(path, src, hooks)
diags = diags.Append(initDiags)
if initDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
c.Ui.Output("")
}
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// If our directory is empty, then we're done. We can't get or setup
// the backend with an empty directory.
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empty, err := configs.IsEmptyDir(path)
if err != nil {
diags = diags.Append(fmt.Errorf("Error checking configuration: %s", err))
c.showDiagnostics(diags)
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return 1
}
if empty {
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c.Ui.Output(c.Colorize().Color(strings.TrimSpace(outputInitEmpty)))
return 0
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}
// For Terraform v0.12 we introduced a special loading mode where we would
// use the 0.11-syntax-compatible "earlyconfig" package as a heuristic to
// identify situations where it was likely that the user was trying to use
// 0.11-only syntax that the upgrade tool might help with.
//
// However, as the language has moved on that is no longer a suitable
// heuristic in Terraform 0.13 and later: other new additions to the
// language can cause the main loader to disagree with earlyconfig, which
// would lead us to give poor advice about how to respond.
//
// For that reason, we no longer use a different error message in that
// situation, but for now we still use both codepaths because some of our
// initialization functionality remains built around "earlyconfig" and
// so we need to still load the module via that mechanism anyway until we
// can do some more invasive refactoring here.
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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rootMod, confDiags := c.loadSingleModule(path)
rootModEarly, earlyConfDiags := c.loadSingleModuleEarly(path)
if confDiags.HasErrors() {
c.Ui.Error(c.Colorize().Color(strings.TrimSpace(errInitConfigError)))
// TODO: It would be nice to check the version constraints in
// rootModEarly.RequiredCore and print out a hint if the module is
// declaring that it's not compatible with this version of Terraform,
// though we're deferring that for now because we're intending to
// refactor our use of "earlyconfig" here anyway and so whatever we
// might do here right now would likely be invalidated by that.
c.showDiagnostics(confDiags)
return 1
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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}
// If _only_ the early loader encountered errors then that's unusual
// (it should generally be a superset of the normal loader) but we'll
// return those errors anyway since otherwise we'll probably get
// some weird behavior downstream. Errors from the early loader are
// generally not as high-quality since it has less context to work with.
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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if earlyConfDiags.HasErrors() {
c.Ui.Error(c.Colorize().Color(strings.TrimSpace(errInitConfigError)))
// Errors from the early loader are generally not as high-quality since
// it has less context to work with.
diags = diags.Append(confDiags)
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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c.showDiagnostics(diags)
return 1
}
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command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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if flagGet {
modsOutput, modsDiags := c.getModules(path, rootModEarly, flagUpgrade)
diags = diags.Append(modsDiags)
if modsDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
if modsOutput {
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header = true
}
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}
// With all of the modules (hopefully) installed, we can now try to load the
// whole configuration tree.
config, confDiags := c.loadConfig(path)
diags = diags.Append(confDiags)
if confDiags.HasErrors() {
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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c.Ui.Error(strings.TrimSpace(errInitConfigError))
c.showDiagnostics(diags)
return 1
}
// Before we go further, we'll check to make sure none of the modules in the
// configuration declare that they don't support this Terraform version, so
// we can produce a version-related error message rather than
// potentially-confusing downstream errors.
versionDiags := terraform.CheckCoreVersionRequirements(config)
diags = diags.Append(versionDiags)
if versionDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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}
var back backend.Backend
if flagBackend {
be, backendOutput, backendDiags := c.initBackend(rootMod, flagConfigExtra)
diags = diags.Append(backendDiags)
if backendDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
if backendOutput {
header = true
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
}
back = be
} else {
// load the previously-stored backend config
be, backendDiags := c.Meta.backendFromState()
diags = diags.Append(backendDiags)
if backendDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
back = be
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
}
if back == nil {
// If we didn't initialize a backend then we'll try to at least
// instantiate one. This might fail if it wasn't already initialized
// by a previous run, so we must still expect that "back" may be nil
// in code that follows.
var backDiags tfdiags.Diagnostics
back, backDiags = c.Backend(nil)
if backDiags.HasErrors() {
// This is fine. We'll proceed with no backend, then.
back = nil
}
}
var state *states.State
// If we have a functional backend (either just initialized or initialized
// on a previous run) we'll use the current state as a potential source
// of provider dependencies.
if back != nil {
workspace, err := c.Workspace()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error selecting workspace: %s", err))
return 1
}
sMgr, err := back.StateMgr(workspace)
if err != nil {
c.Ui.Error(fmt.Sprintf("Error loading state: %s", err))
return 1
}
if err := sMgr.RefreshState(); err != nil {
c.Ui.Error(fmt.Sprintf("Error refreshing state: %s", err))
return 1
}
state = sMgr.State()
}
// Now that we have loaded all modules, check the module tree for missing providers.
providersOutput, providersAbort, providerDiags := c.getProviders(config, state, flagUpgrade, flagPluginPath)
diags = diags.Append(providerDiags)
if providersAbort || providerDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
if providersOutput {
header = true
}
2017-01-19 05:50:45 +01:00
// If we outputted information, then we need to output a newline
// so that our success message is nicely spaced out from prior text.
if header {
c.Ui.Output("")
}
2017-01-19 05:50:45 +01:00
// If we accumulated any warnings along the way that weren't accompanied
// by errors then we'll output them here so that the success message is
// still the final thing shown.
c.showDiagnostics(diags)
2017-01-19 05:50:45 +01:00
c.Ui.Output(c.Colorize().Color(strings.TrimSpace(outputInitSuccess)))
cli: allow disabling "next steps" message in terraform plan In #15884 we adjusted the plan output to give an explicit command to run to apply a plan, whereas before this command was just alluded to in the prose. Since releasing that, we've got good feedback that it's confusing to include such instructions when Terraform is running in a workflow automation tool, because such tools usually abstract away exactly what commands are run and require users to take different actions to proceed through the workflow. To accommodate such environments while retaining helpful messages for normal CLI usage, here we introduce a new environment variable TF_IN_AUTOMATION which, when set to a non-empty value, is a hint to Terraform that it isn't being run in an interactive command shell and it should thus tone down the "next steps" messaging. The documentation for this setting is included as part of the "...in automation" guide since it's not generally useful in other cases. We also intentionally disclaim comprehensive support for this since we want to avoid creating an extreme number of "if running in automation..." codepaths that would increase the testing matrix and hurt maintainability. The focus is specifically on the output of the three commands we give in the automation guide, which at present means the following two situations: * "terraform init" does not include the final paragraphs that suggest running "terraform plan" and tell you in what situations you might need to re-run "terraform init". * "terraform plan" does not include the final paragraphs that either warn about not specifying "-out=..." or instruct to run "terraform apply" with the generated plan file.
2017-09-09 02:14:37 +02:00
if !c.RunningInAutomation {
// If we're not running in an automation wrapper, give the user
// some more detailed next steps that are appropriate for interactive
// shell usage.
c.Ui.Output(c.Colorize().Color(strings.TrimSpace(outputInitSuccessCLI)))
}
2014-09-27 01:03:39 +02:00
return 0
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
func (c *InitCommand) getModules(path string, earlyRoot *tfconfig.Module, upgrade bool) (output bool, diags tfdiags.Diagnostics) {
if len(earlyRoot.ModuleCalls) == 0 {
// Nothing to do
return false, nil
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
if upgrade {
c.Ui.Output(c.Colorize().Color(fmt.Sprintf("[reset][bold]Upgrading modules...")))
} else {
c.Ui.Output(c.Colorize().Color(fmt.Sprintf("[reset][bold]Initializing modules...")))
}
hooks := uiModuleInstallHooks{
Ui: c.Ui,
ShowLocalPaths: true,
}
instDiags := c.installModules(path, upgrade, hooks)
diags = diags.Append(instDiags)
// Since module installer has modified the module manifest on disk, we need
// to refresh the cache of it in the loader.
if c.configLoader != nil {
if err := c.configLoader.RefreshModules(); err != nil {
// Should never happen
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to read module manifest",
fmt.Sprintf("After installing modules, Terraform could not re-read the manifest of installed modules. This is a bug in Terraform. %s.", err),
))
}
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
return true, diags
}
func (c *InitCommand) initBackend(root *configs.Module, extraConfig rawFlags) (be backend.Backend, output bool, diags tfdiags.Diagnostics) {
c.Ui.Output(c.Colorize().Color(fmt.Sprintf("\n[reset][bold]Initializing the backend...")))
var backendConfig *configs.Backend
var backendConfigOverride hcl.Body
if root.Backend != nil {
backendType := root.Backend.Type
bf := backendInit.Backend(backendType)
if bf == nil {
diags = diags.Append(&hcl.Diagnostic{
Severity: hcl.DiagError,
Summary: "Unsupported backend type",
Detail: fmt.Sprintf("There is no backend type named %q.", backendType),
Subject: &root.Backend.TypeRange,
})
return nil, true, diags
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
b := bf()
backendSchema := b.ConfigSchema()
backendConfig = root.Backend
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
var overrideDiags tfdiags.Diagnostics
backendConfigOverride, overrideDiags = c.backendConfigOverrideBody(extraConfig, backendSchema)
diags = diags.Append(overrideDiags)
if overrideDiags.HasErrors() {
return nil, true, diags
}
} else {
// If the user supplied a -backend-config on the CLI but no backend
// block was found in the configuration, it's likely - but not
// necessarily - a mistake. Return a warning.
if !extraConfig.Empty() {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Warning,
"Missing backend configuration",
`-backend-config was used without a "backend" block in the configuration.
If you intended to override the default local backend configuration,
no action is required, but you may add an explicit backend block to your
configuration to clear this warning:
terraform {
backend "local" {}
}
However, if you intended to override a defined backend, please verify that
the backend configuration is present and valid.
`,
))
}
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
opts := &BackendOpts{
Config: backendConfig,
ConfigOverride: backendConfigOverride,
Init: true,
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
back, backDiags := c.Backend(opts)
diags = diags.Append(backDiags)
return back, true, diags
}
// Load the complete module tree, and fetch any missing providers.
// This method outputs its own Ui.
func (c *InitCommand) getProviders(config *configs.Config, state *states.State, upgrade bool, pluginDirs []string) (output, abort bool, diags tfdiags.Diagnostics) {
// First we'll collect all the provider dependencies we can see in the
// configuration and the state.
reqs, hclDiags := config.ProviderRequirements()
diags = diags.Append(hclDiags)
if hclDiags.HasErrors() {
return false, true, diags
}
if state != nil {
stateReqs := state.ProviderRequirements()
reqs = reqs.Merge(stateReqs)
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
for providerAddr := range reqs {
if providerAddr.IsLegacy() {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid legacy provider address",
fmt.Sprintf(
"This configuration or its associated state refers to the unqualified provider %q.\n\nYou must complete the Terraform 0.13 upgrade process before upgrading to later versions.",
providerAddr.Type,
),
))
}
}
previousLocks, moreDiags := c.lockedDependencies()
diags = diags.Append(moreDiags)
if diags.HasErrors() {
return false, true, diags
}
var inst *providercache.Installer
if len(pluginDirs) == 0 {
// By default we use a source that looks for providers in all of the
// standard locations, possibly customized by the user in CLI config.
inst = c.providerInstaller()
} else {
// If the user passes at least one -plugin-dir then that circumvents
// the usual sources and forces Terraform to consult only the given
// directories. Anything not available in one of those directories
// is not available for installation.
source := c.providerCustomLocalDirectorySource(pluginDirs)
inst = c.providerInstallerCustomSource(source)
// The default (or configured) search paths are logged earlier, in provider_source.go
// Log that those are being overridden by the `-plugin-dir` command line options
log.Println("[DEBUG] init: overriding provider plugin search paths")
log.Printf("[DEBUG] will search for provider plugins in %s", pluginDirs)
}
// Because we're currently just streaming a series of events sequentially
// into the terminal, we're showing only a subset of the events to keep
// things relatively concise. Later it'd be nice to have a progress UI
// where statuses update in-place, but we can't do that as long as we
// are shimming our vt100 output to the legacy console API on Windows.
command: new cache directory .terraform/providers for providers Terraform v0.10 introduced .terraform/plugins as a cache directory for automatically-installed plugins, Terraform v0.13 later reorganized the directory structure inside but retained its purpose as a cache. The local cache used to also serve as a record of specifically which packages were selected in a particular working directory, with the intent that a second run of "terraform init" would always select the same packages again. That meant that in some sense it behaved a bit like a local filesystem mirror directory, even though that wasn't its intended purpose. Due to some unfortunate miscommunications, somewhere a long the line we published some documentation that _recommended_ using the cache directory as if it were a filesystem mirror directory when working with Terraform Cloud. That was really only working as an accident of implementation details, and Terraform v0.14 is now going to break that because the source of record for the currently-selected provider versions is now the public-facing dependency lock file rather than the contents of an existing local cache directory on disk. After some consideration of how to move forward here, this commit implements a compromise that tries to avoid silently doing anything surprising while still giving useful guidance to folks who were previously using the unsupported strategy. Specifically: - The local cache directory will now be .terraform/providers rather than .terraform/plugins, because .terraform/plugins is effectively "poisoned" by the incorrect usage that we can't reliably distinguish from prior version correct usage. - The .terraform/plugins directory is now the "legacy cache directory". It is intentionally _not_ now a filesystem mirror directory, because that would risk incorrectly interpreting providers automatically installed by Terraform v0.13 as if they were a local mirror, and thus upgrades and checksum fetches from the origin registry would be blocked. - Because of the previous two points, someone who _was_ trying to use the legacy cache directory as a filesystem mirror would see installation fail for any providers they manually added to the legacy directory. To avoid leaving that user stumped as to what went wrong, there's a heuristic for the case where a non-official provider fails installation and yet we can see it in the legacy cache directory. If that heuristic matches then we'll produce a warning message hinting to move the provider under the terraform.d/plugins directory, which is a _correct_ location for "bundled" provider plugins that belong only to a single configuration (as opposed to being installed globally on a system). This does unfortunately mean that anyone who was following the incorrectly-documented pattern will now encounter an error (and the aforementioned warning hint) after upgrading to Terraform v0.14. This seems like the safest compromise because Terraform can't automatically infer the intent of files it finds in .terraform/plugins in order to decide automatically how best to handle them. The internals of the .terraform directory are always considered implementation detail for a particular Terraform version and so switching to a new directory for the _actual_ cache directory fits within our usual set of guarantees, though it's definitely non-ideal in isolation but okay when taken in the broader context of this problem, where the alternative would be silent misbehavior when upgrading.
2020-10-14 00:03:56 +02:00
missingProviders := make(map[addrs.Provider]struct{})
evts := &providercache.InstallerEvents{
PendingProviders: func(reqs map[addrs.Provider]getproviders.VersionConstraints) {
c.Ui.Output(c.Colorize().Color(
"\n[reset][bold]Initializing provider plugins...",
))
},
ProviderAlreadyInstalled: func(provider addrs.Provider, selectedVersion getproviders.Version) {
c.Ui.Info(fmt.Sprintf("- Using previously-installed %s v%s", provider.ForDisplay(), selectedVersion))
},
BuiltInProviderAvailable: func(provider addrs.Provider) {
c.Ui.Info(fmt.Sprintf("- %s is built in to Terraform", provider.ForDisplay()))
},
BuiltInProviderFailure: func(provider addrs.Provider, err error) {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid dependency on built-in provider",
fmt.Sprintf("Cannot use %s: %s.", provider.ForDisplay(), err),
))
},
QueryPackagesBegin: func(provider addrs.Provider, versionConstraints getproviders.VersionConstraints, locked bool) {
if locked {
c.Ui.Info(fmt.Sprintf("- Reusing previous version of %s from the dependency lock file", provider.ForDisplay()))
} else {
if len(versionConstraints) > 0 {
c.Ui.Info(fmt.Sprintf("- Finding %s versions matching %q...", provider.ForDisplay(), getproviders.VersionConstraintsString(versionConstraints)))
} else {
c.Ui.Info(fmt.Sprintf("- Finding latest version of %s...", provider.ForDisplay()))
}
}
},
LinkFromCacheBegin: func(provider addrs.Provider, version getproviders.Version, cacheRoot string) {
c.Ui.Info(fmt.Sprintf("- Using %s v%s from the shared cache directory", provider.ForDisplay(), version))
},
FetchPackageBegin: func(provider addrs.Provider, version getproviders.Version, location getproviders.PackageLocation) {
c.Ui.Info(fmt.Sprintf("- Installing %s v%s...", provider.ForDisplay(), version))
},
QueryPackagesFailure: func(provider addrs.Provider, err error) {
command: new cache directory .terraform/providers for providers Terraform v0.10 introduced .terraform/plugins as a cache directory for automatically-installed plugins, Terraform v0.13 later reorganized the directory structure inside but retained its purpose as a cache. The local cache used to also serve as a record of specifically which packages were selected in a particular working directory, with the intent that a second run of "terraform init" would always select the same packages again. That meant that in some sense it behaved a bit like a local filesystem mirror directory, even though that wasn't its intended purpose. Due to some unfortunate miscommunications, somewhere a long the line we published some documentation that _recommended_ using the cache directory as if it were a filesystem mirror directory when working with Terraform Cloud. That was really only working as an accident of implementation details, and Terraform v0.14 is now going to break that because the source of record for the currently-selected provider versions is now the public-facing dependency lock file rather than the contents of an existing local cache directory on disk. After some consideration of how to move forward here, this commit implements a compromise that tries to avoid silently doing anything surprising while still giving useful guidance to folks who were previously using the unsupported strategy. Specifically: - The local cache directory will now be .terraform/providers rather than .terraform/plugins, because .terraform/plugins is effectively "poisoned" by the incorrect usage that we can't reliably distinguish from prior version correct usage. - The .terraform/plugins directory is now the "legacy cache directory". It is intentionally _not_ now a filesystem mirror directory, because that would risk incorrectly interpreting providers automatically installed by Terraform v0.13 as if they were a local mirror, and thus upgrades and checksum fetches from the origin registry would be blocked. - Because of the previous two points, someone who _was_ trying to use the legacy cache directory as a filesystem mirror would see installation fail for any providers they manually added to the legacy directory. To avoid leaving that user stumped as to what went wrong, there's a heuristic for the case where a non-official provider fails installation and yet we can see it in the legacy cache directory. If that heuristic matches then we'll produce a warning message hinting to move the provider under the terraform.d/plugins directory, which is a _correct_ location for "bundled" provider plugins that belong only to a single configuration (as opposed to being installed globally on a system). This does unfortunately mean that anyone who was following the incorrectly-documented pattern will now encounter an error (and the aforementioned warning hint) after upgrading to Terraform v0.14. This seems like the safest compromise because Terraform can't automatically infer the intent of files it finds in .terraform/plugins in order to decide automatically how best to handle them. The internals of the .terraform directory are always considered implementation detail for a particular Terraform version and so switching to a new directory for the _actual_ cache directory fits within our usual set of guarantees, though it's definitely non-ideal in isolation but okay when taken in the broader context of this problem, where the alternative would be silent misbehavior when upgrading.
2020-10-14 00:03:56 +02:00
// We track providers that had missing metadata because we might
// generate additional hints for some of them at the end.
missingProviders[provider] = struct{}{}
switch errorTy := err.(type) {
case getproviders.ErrProviderNotFound:
sources := errorTy.Sources
displaySources := make([]string, len(sources))
for i, source := range sources {
displaySources[i] = fmt.Sprintf(" - %s", source)
}
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to query available provider packages",
fmt.Sprintf("Could not retrieve the list of available versions for provider %s: %s\n\n%s",
provider.ForDisplay(), err, strings.Join(displaySources, "\n"),
),
))
case getproviders.ErrRegistryProviderNotKnown:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to query available provider packages",
fmt.Sprintf("Could not retrieve the list of available versions for provider %s: %s",
provider.ForDisplay(), err,
),
))
case getproviders.ErrHostNoProviders:
switch {
case errorTy.Hostname == svchost.Hostname("github.com") && !errorTy.HasOtherVersion:
// If a user copies the URL of a GitHub repository into
// the source argument and removes the schema to make it
// provider-address-shaped then that's one way we can end up
// here. We'll use a specialized error message in anticipation
// of that mistake. We only do this if github.com isn't a
// provider registry, to allow for the (admittedly currently
// rather unlikely) possibility that github.com starts being
// a real Terraform provider registry in the future.
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid provider registry host",
fmt.Sprintf("The given source address %q specifies a GitHub repository rather than a Terraform provider. Refer to the documentation of the provider to find the correct source address to use.",
provider.String(),
),
))
case errorTy.HasOtherVersion:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid provider registry host",
fmt.Sprintf("The host %q given in in provider source address %q does not offer a Terraform provider registry that is compatible with this Terraform version, but it may be compatible with a different Terraform version.",
errorTy.Hostname, provider.String(),
),
))
default:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid provider registry host",
fmt.Sprintf("The host %q given in in provider source address %q does not offer a Terraform provider registry.",
errorTy.Hostname, provider.String(),
),
))
}
case getproviders.ErrRequestCanceled:
// We don't attribute cancellation to any particular operation,
// but rather just emit a single general message about it at
// the end, by checking ctx.Err().
default:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to query available provider packages",
fmt.Sprintf("Could not retrieve the list of available versions for provider %s: %s",
provider.ForDisplay(), err,
),
))
}
},
QueryPackagesWarning: func(provider addrs.Provider, warnings []string) {
displayWarnings := make([]string, len(warnings))
for i, warning := range warnings {
displayWarnings[i] = fmt.Sprintf("- %s", warning)
}
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Warning,
"Additional provider information from registry",
fmt.Sprintf("The remote registry returned warnings for %s:\n%s",
provider.String(),
strings.Join(displayWarnings, "\n"),
),
))
},
LinkFromCacheFailure: func(provider addrs.Provider, version getproviders.Version, err error) {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to install provider from shared cache",
fmt.Sprintf("Error while importing %s v%s from the shared cache directory: %s.", provider.ForDisplay(), version, err),
))
},
FetchPackageFailure: func(provider addrs.Provider, version getproviders.Version, err error) {
const summaryIncompatible = "Incompatible provider version"
switch err := err.(type) {
case getproviders.ErrProtocolNotSupported:
closestAvailable := err.Suggestion
switch {
case closestAvailable == getproviders.UnspecifiedVersion:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summaryIncompatible,
fmt.Sprintf(errProviderVersionIncompatible, provider.String()),
))
case version.GreaterThan(closestAvailable):
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summaryIncompatible,
fmt.Sprintf(providerProtocolTooNew, provider.ForDisplay(),
version, tfversion.String(), closestAvailable, closestAvailable,
getproviders.VersionConstraintsString(reqs[provider]),
),
))
default: // version is less than closestAvailable
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summaryIncompatible,
fmt.Sprintf(providerProtocolTooOld, provider.ForDisplay(),
version, tfversion.String(), closestAvailable, closestAvailable,
getproviders.VersionConstraintsString(reqs[provider]),
),
))
}
case getproviders.ErrPlatformNotSupported:
switch {
case err.MirrorURL != nil:
// If we're installing from a mirror then it may just be
// the mirror lacking the package, rather than it being
// unavailable from upstream.
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summaryIncompatible,
fmt.Sprintf(
"Your chosen provider mirror at %s does not have a %s v%s package available for your current platform, %s.\n\nProvider releases are separate from Terraform CLI releases, so this provider might not support your current platform. Alternatively, the mirror itself might have only a subset of the plugin packages available in the origin registry, at %s.",
err.MirrorURL, err.Provider, err.Version, err.Platform,
err.Provider.Hostname,
),
))
default:
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
summaryIncompatible,
fmt.Sprintf(
"Provider %s v%s does not have a package available for your current platform, %s.\n\nProvider releases are separate from Terraform CLI releases, so not all providers are available for all platforms. Other versions of this provider may have different platforms supported.",
err.Provider, err.Version, err.Platform,
),
))
}
case getproviders.ErrRequestCanceled:
// We don't attribute cancellation to any particular operation,
// but rather just emit a single general message about it at
// the end, by checking ctx.Err().
default:
// We can potentially end up in here under cancellation too,
// in spite of our getproviders.ErrRequestCanceled case above,
// because not all of the outgoing requests we do under the
// "fetch package" banner are source metadata requests.
// In that case we will emit a redundant error here about
// the request being cancelled, but we'll still detect it
// as a cancellation after the installer returns and do the
// normal cancellation handling.
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to install provider",
fmt.Sprintf("Error while installing %s v%s: %s", provider.ForDisplay(), version, err),
))
}
},
2020-04-08 22:22:07 +02:00
FetchPackageSuccess: func(provider addrs.Provider, version getproviders.Version, localDir string, authResult *getproviders.PackageAuthenticationResult) {
var keyID string
if authResult != nil && authResult.ThirdPartySigned() {
keyID = authResult.KeyID
2020-04-08 22:22:07 +02:00
}
if keyID != "" {
keyID = c.Colorize().Color(fmt.Sprintf(", key ID [reset][bold]%s[reset]", keyID))
2020-04-08 22:22:07 +02:00
}
c.Ui.Info(fmt.Sprintf("- Installed %s v%s (%s%s)", provider.ForDisplay(), version, authResult, keyID))
},
ProvidersFetched: func(authResults map[addrs.Provider]*getproviders.PackageAuthenticationResult) {
thirdPartySigned := false
for _, authResult := range authResults {
if authResult.ThirdPartySigned() {
thirdPartySigned = true
break
}
}
if thirdPartySigned {
c.Ui.Info(fmt.Sprintf("\nPartner and community providers are signed by their developers.\n" +
"If you'd like to know more about provider signing, you can read about it here:\n" +
"https://www.terraform.io/docs/plugins/signing.html"))
}
2020-04-08 22:22:07 +02:00
},
HashPackageFailure: func(provider addrs.Provider, version getproviders.Version, err error) {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Failed to validate installed provider",
fmt.Sprintf(
"Validating provider %s v%s failed: %s",
provider.ForDisplay(),
version,
err,
),
))
},
}
mode := providercache.InstallNewProvidersOnly
if upgrade {
mode = providercache.InstallUpgrades
}
// Installation can be aborted by interruption signals
ctx, done := c.InterruptibleContext()
defer done()
ctx = evts.OnContext(ctx)
newLocks, err := inst.EnsureProviderVersions(ctx, previousLocks, reqs, mode)
if ctx.Err() == context.Canceled {
c.showDiagnostics(diags)
c.Ui.Error("Provider installation was canceled by an interrupt signal.")
return true, true, diags
}
command: new cache directory .terraform/providers for providers Terraform v0.10 introduced .terraform/plugins as a cache directory for automatically-installed plugins, Terraform v0.13 later reorganized the directory structure inside but retained its purpose as a cache. The local cache used to also serve as a record of specifically which packages were selected in a particular working directory, with the intent that a second run of "terraform init" would always select the same packages again. That meant that in some sense it behaved a bit like a local filesystem mirror directory, even though that wasn't its intended purpose. Due to some unfortunate miscommunications, somewhere a long the line we published some documentation that _recommended_ using the cache directory as if it were a filesystem mirror directory when working with Terraform Cloud. That was really only working as an accident of implementation details, and Terraform v0.14 is now going to break that because the source of record for the currently-selected provider versions is now the public-facing dependency lock file rather than the contents of an existing local cache directory on disk. After some consideration of how to move forward here, this commit implements a compromise that tries to avoid silently doing anything surprising while still giving useful guidance to folks who were previously using the unsupported strategy. Specifically: - The local cache directory will now be .terraform/providers rather than .terraform/plugins, because .terraform/plugins is effectively "poisoned" by the incorrect usage that we can't reliably distinguish from prior version correct usage. - The .terraform/plugins directory is now the "legacy cache directory". It is intentionally _not_ now a filesystem mirror directory, because that would risk incorrectly interpreting providers automatically installed by Terraform v0.13 as if they were a local mirror, and thus upgrades and checksum fetches from the origin registry would be blocked. - Because of the previous two points, someone who _was_ trying to use the legacy cache directory as a filesystem mirror would see installation fail for any providers they manually added to the legacy directory. To avoid leaving that user stumped as to what went wrong, there's a heuristic for the case where a non-official provider fails installation and yet we can see it in the legacy cache directory. If that heuristic matches then we'll produce a warning message hinting to move the provider under the terraform.d/plugins directory, which is a _correct_ location for "bundled" provider plugins that belong only to a single configuration (as opposed to being installed globally on a system). This does unfortunately mean that anyone who was following the incorrectly-documented pattern will now encounter an error (and the aforementioned warning hint) after upgrading to Terraform v0.14. This seems like the safest compromise because Terraform can't automatically infer the intent of files it finds in .terraform/plugins in order to decide automatically how best to handle them. The internals of the .terraform directory are always considered implementation detail for a particular Terraform version and so switching to a new directory for the _actual_ cache directory fits within our usual set of guarantees, though it's definitely non-ideal in isolation but okay when taken in the broader context of this problem, where the alternative would be silent misbehavior when upgrading.
2020-10-14 00:03:56 +02:00
if len(missingProviders) > 0 {
// If we encountered requirements for one or more providers where we
// weren't able to find any metadata, that _might_ be because a
// user had previously (before 0.14) been incorrectly using the
// .terraform/plugins directory as if it were a local filesystem
// mirror, rather than as the main cache directory.
//
// We no longer allow that because it'd be ambiguous whether plugins in
// there are explictly intended to be a local mirror or if they are
// just leftover cache entries from provider installation in
// Terraform 0.13.
//
// To help those users migrate we have a specialized warning message
// for it, which we'll produce only if one of the missing providers can
// be seen in the "legacy" cache directory, which is what we're now
// considering .terraform/plugins to be. (The _current_ cache directory
// is .terraform/providers.)
//
// This is only a heuristic, so it might potentially produce false
// positives if a user happens to encounter another sort of error
// while they are upgrading from Terraform 0.13 to 0.14. Aside from
// upgrading users should not end up in here because they won't
// have a legacy cache directory at all.
legacyDir := c.providerLegacyCacheDir()
if legacyDir != nil { // if the legacy directory is present at all
for missingProvider := range missingProviders {
if missingProvider.IsDefault() {
// If we get here for a default provider then it's more
// likely that something _else_ went wrong, like a network
// problem, so we'll skip the warning in this case to
// avoid potentially misleading the user into creating an
// unnecessary local mirror for an official provider.
continue
}
entry := legacyDir.ProviderLatestVersion(missingProvider)
if entry == nil {
continue
}
// If we get here then the missing provider was cached, which
// implies that it might be an in-house provider the user
// placed manually to try to make Terraform use it as if it
// were a local mirror directory.
wantDir := filepath.FromSlash(fmt.Sprintf("terraform.d/plugins/%s/%s/%s", missingProvider, entry.Version, getproviders.CurrentPlatform))
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Warning,
"Missing provider is in legacy cache directory",
fmt.Sprintf(
"Terraform supports a number of local directories that can serve as automatic local filesystem mirrors, but .terraform/plugins is not one of them because Terraform v0.13 and earlier used this directory to cache copies of provider plugins retrieved from elsewhere.\n\nIf you intended to use this directory as a filesystem mirror for %s, place it instead in the following directory:\n %s",
missingProvider, wantDir,
),
))
}
}
}
if err != nil {
// The errors captured in "err" should be redundant with what we
// received via the InstallerEvents callbacks above, so we'll
// just return those as long as we have some.
if !diags.HasErrors() {
diags = diags.Append(err)
}
return true, true, diags
}
// If the provider dependencies have changed since the last run then we'll
// say a little about that in case the reader wasn't expecting a change.
// (When we later integrate module dependencies into the lock file we'll
// probably want to refactor this so that we produce one lock-file related
// message for all changes together, but this is here for now just because
// it's the smallest change relative to what came before it, which was
// a hidden JSON file specifically for tracking providers.)
if !newLocks.Equal(previousLocks) {
if previousLocks.Empty() {
// A change from empty to non-empty is special because it suggests
// we're running "terraform init" for the first time against a
// new configuration. In that case we'll take the opportunity to
// say a little about what the dependency lock file is, for new
// users or those who are upgrading from a previous Terraform
// version that didn't have dependency lock files.
c.Ui.Output(c.Colorize().Color(`
Terraform has created a lock file [bold].terraform.lock.hcl[reset] to record the provider
selections it made above. Include this file in your version control repository
so that Terraform can guarantee to make the same selections by default when
you run "terraform init" in the future.`))
} else {
c.Ui.Output(c.Colorize().Color(`
Terraform has made some changes to the provider dependency selections recorded
in the .terraform.lock.hcl file. Review those changes and commit them to your
version control system if they represent changes you intended to make.`))
}
}
// TODO: Check whether newLocks is different from previousLocks and mention
// in the UI if so. We should emit a different message if previousLocks was
// empty, because that indicates we were creating a lock file for the first
// time and so we need to introduce the user to the idea of it.
moreDiags = c.replaceLockedDependencies(newLocks)
diags = diags.Append(moreDiags)
return true, false, diags
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
}
// backendConfigOverrideBody interprets the raw values of -backend-config
// arguments into a hcl Body that should override the backend settings given
// in the configuration.
//
// If the result is nil then no override needs to be provided.
//
// If the returned diagnostics contains errors then the returned body may be
// incomplete or invalid.
func (c *InitCommand) backendConfigOverrideBody(flags rawFlags, schema *configschema.Block) (hcl.Body, tfdiags.Diagnostics) {
items := flags.AllItems()
if len(items) == 0 {
return nil, nil
}
var ret hcl.Body
var diags tfdiags.Diagnostics
synthVals := make(map[string]cty.Value)
mergeBody := func(newBody hcl.Body) {
if ret == nil {
ret = newBody
} else {
ret = configs.MergeBodies(ret, newBody)
}
}
flushVals := func() {
if len(synthVals) == 0 {
return
}
newBody := configs.SynthBody("-backend-config=...", synthVals)
mergeBody(newBody)
synthVals = make(map[string]cty.Value)
}
if len(items) == 1 && items[0].Value == "" {
// Explicitly remove all -backend-config options.
// We do this by setting an empty but non-nil ConfigOverrides.
return configs.SynthBody("-backend-config=''", synthVals), diags
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
2019-01-14 20:11:00 +01:00
for _, item := range items {
eq := strings.Index(item.Value, "=")
if eq == -1 {
// The value is interpreted as a filename.
newBody, fileDiags := c.loadHCLFile(item.Value)
diags = diags.Append(fileDiags)
if fileDiags.HasErrors() {
continue
}
// Generate an HCL body schema for the backend block.
var bodySchema hcl.BodySchema
for name := range schema.Attributes {
// We intentionally ignore the `Required` attribute here
// because backend config override files can be partial. The
// goal is to make sure we're not loading a file with
// extraneous attributes or blocks.
bodySchema.Attributes = append(bodySchema.Attributes, hcl.AttributeSchema{
Name: name,
})
}
for name, block := range schema.BlockTypes {
var labelNames []string
if block.Nesting == configschema.NestingMap {
labelNames = append(labelNames, "key")
}
bodySchema.Blocks = append(bodySchema.Blocks, hcl.BlockHeaderSchema{
Type: name,
LabelNames: labelNames,
})
}
// Verify that the file body matches the expected backend schema.
_, schemaDiags := newBody.Content(&bodySchema)
diags = diags.Append(schemaDiags)
if schemaDiags.HasErrors() {
continue
}
command: "terraform init" can partially initialize for 0.12upgrade There are a few constructs from 0.11 and prior that cause 0.12 parsing to fail altogether, which previously created a chicken/egg problem because we need to install the providers in order to run "terraform 0.12upgrade" and thus fix the problem. This changes "terraform init" to use the new "early configuration" loader for module and provider installation. This is built on the more permissive parser in the terraform-config-inspect package, and so it allows us to read out the top-level blocks from the configuration while accepting legacy HCL syntax. In the long run this will let us do version compatibility detection before attempting a "real" config load, giving us better error messages for any future syntax additions, but in the short term the key thing is that it allows us to install the dependencies even if the configuration isn't fully valid. Because backend init still requires full configuration, this introduces a new mode of terraform init where it detects heuristically if it seems like we need to do a configuration upgrade and does a partial init if so, before finally directing the user to run "terraform 0.12upgrade" before running any other commands. The heuristic here is based on two assumptions: - If the "early" loader finds no errors but the normal loader does, the configuration is likely to be valid for Terraform 0.11 but not 0.12. - If there's already a version constraint in the configuration that excludes Terraform versions prior to v0.12 then the configuration is probably _already_ upgraded and so it's just a normal syntax error, even if the early loader didn't detect it. Once the upgrade process is removed in 0.13.0 (users will be required to go stepwise 0.11 -> 0.12 -> 0.13 to upgrade after that), some of this can be simplified to remove that special mode, but the idea of doing the dependency version checks against the liberal parser will remain valuable to increase our chances of reporting version-based incompatibilities rather than syntax errors as we add new features in future.
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flushVals() // deal with any accumulated individual values first
mergeBody(newBody)
} else {
name := item.Value[:eq]
rawValue := item.Value[eq+1:]
attrS := schema.Attributes[name]
if attrS == nil {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Invalid backend configuration argument",
fmt.Sprintf("The backend configuration argument %q given on the command line is not expected for the selected backend type.", name),
))
continue
}
value, valueDiags := configValueFromCLI(item.String(), rawValue, attrS.Type)
diags = diags.Append(valueDiags)
if valueDiags.HasErrors() {
continue
}
synthVals[name] = value
}
}
flushVals()
return ret, diags
}
func (c *InitCommand) AutocompleteArgs() complete.Predictor {
return complete.PredictDirs("")
}
func (c *InitCommand) AutocompleteFlags() complete.Flags {
return complete.Flags{
"-backend": completePredictBoolean,
"-backend-config": complete.PredictFiles("*.tfvars"), // can also be key=value, but we can't "predict" that
"-force-copy": complete.PredictNothing,
"-from-module": completePredictModuleSource,
"-get": completePredictBoolean,
"-get-plugins": completePredictBoolean,
"-input": completePredictBoolean,
"-lock": completePredictBoolean,
"-lock-timeout": complete.PredictAnything,
"-no-color": complete.PredictNothing,
"-plugin-dir": complete.PredictDirs(""),
"-reconfigure": complete.PredictNothing,
"-upgrade": completePredictBoolean,
"-verify-plugins": completePredictBoolean,
}
}
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func (c *InitCommand) Help() string {
helpText := `
Usage: terraform init [options] [DIR]
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Initialize a new or existing Terraform working directory by creating
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initial files, loading any remote state, downloading modules, etc.
This is the first command that should be run for any new or existing
Terraform configuration per machine. This sets up all the local data
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necessary to run Terraform that is typically not committed to version
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control.
This command is always safe to run multiple times. Though subsequent runs
may give errors, this command will never delete your configuration or
state. Even so, if you have important information, please back it up prior
to running this command, just in case.
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If no arguments are given, the configuration in this working directory
is initialized.
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Options:
-backend=true Configure the backend for this configuration.
-backend-config=path This can be either a path to an HCL file with key/value
assignments (same format as terraform.tfvars) or a
'key=value' format. This is merged with what is in the
configuration file. This can be specified multiple
times. The backend type must be in the configuration
itself.
-force-copy Suppress prompts about copying state data. This is
equivalent to providing a "yes" to all confirmation
prompts.
-from-module=SOURCE Copy the contents of the given module into the target
directory before initialization.
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-get=true Download any modules for this configuration.
-get-plugins=true Download any missing plugins for this configuration.
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-input=true Ask for input if necessary. If false, will error if
input was required.
-lock=true Lock the state file when locking is supported.
-lock-timeout=0s Duration to retry a state lock.
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-no-color If specified, output won't contain any color.
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-plugin-dir Directory containing plugin binaries. This overrides all
default search paths for plugins, and prevents the
automatic installation of plugins. This flag can be used
multiple times.
-reconfigure Reconfigure the backend, ignoring any saved
configuration.
-upgrade=false If installing modules (-get) or plugins (-get-plugins),
ignore previously-downloaded objects and install the
latest version allowed within configured constraints.
-verify-plugins=true Verify the authenticity and integrity of automatically
downloaded plugins.
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`
return strings.TrimSpace(helpText)
}
func (c *InitCommand) Synopsis() string {
return "Initialize a Terraform working directory"
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}
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const errInitConfigError = `
[reset]There are some problems with the configuration, described below.
The Terraform configuration must be valid before initialization so that
Terraform can determine which modules and providers need to be installed.
`
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const errInitCopyNotEmpty = `
The working directory already contains files. The -from-module option requires
an empty directory into which a copy of the referenced module will be placed.
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To initialize the configuration already in this working directory, omit the
-from-module option.
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`
const outputInitEmpty = `
[reset][bold]Terraform initialized in an empty directory![reset]
The directory has no Terraform configuration files. You may begin working
with Terraform immediately by creating Terraform configuration files.
`
const outputInitSuccess = `
[reset][bold][green]Terraform has been successfully initialized![reset][green]
cli: allow disabling "next steps" message in terraform plan In #15884 we adjusted the plan output to give an explicit command to run to apply a plan, whereas before this command was just alluded to in the prose. Since releasing that, we've got good feedback that it's confusing to include such instructions when Terraform is running in a workflow automation tool, because such tools usually abstract away exactly what commands are run and require users to take different actions to proceed through the workflow. To accommodate such environments while retaining helpful messages for normal CLI usage, here we introduce a new environment variable TF_IN_AUTOMATION which, when set to a non-empty value, is a hint to Terraform that it isn't being run in an interactive command shell and it should thus tone down the "next steps" messaging. The documentation for this setting is included as part of the "...in automation" guide since it's not generally useful in other cases. We also intentionally disclaim comprehensive support for this since we want to avoid creating an extreme number of "if running in automation..." codepaths that would increase the testing matrix and hurt maintainability. The focus is specifically on the output of the three commands we give in the automation guide, which at present means the following two situations: * "terraform init" does not include the final paragraphs that suggest running "terraform plan" and tell you in what situations you might need to re-run "terraform init". * "terraform plan" does not include the final paragraphs that either warn about not specifying "-out=..." or instruct to run "terraform apply" with the generated plan file.
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`
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cli: allow disabling "next steps" message in terraform plan In #15884 we adjusted the plan output to give an explicit command to run to apply a plan, whereas before this command was just alluded to in the prose. Since releasing that, we've got good feedback that it's confusing to include such instructions when Terraform is running in a workflow automation tool, because such tools usually abstract away exactly what commands are run and require users to take different actions to proceed through the workflow. To accommodate such environments while retaining helpful messages for normal CLI usage, here we introduce a new environment variable TF_IN_AUTOMATION which, when set to a non-empty value, is a hint to Terraform that it isn't being run in an interactive command shell and it should thus tone down the "next steps" messaging. The documentation for this setting is included as part of the "...in automation" guide since it's not generally useful in other cases. We also intentionally disclaim comprehensive support for this since we want to avoid creating an extreme number of "if running in automation..." codepaths that would increase the testing matrix and hurt maintainability. The focus is specifically on the output of the three commands we give in the automation guide, which at present means the following two situations: * "terraform init" does not include the final paragraphs that suggest running "terraform plan" and tell you in what situations you might need to re-run "terraform init". * "terraform plan" does not include the final paragraphs that either warn about not specifying "-out=..." or instruct to run "terraform apply" with the generated plan file.
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const outputInitSuccessCLI = `[reset][green]
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You may now begin working with Terraform. Try running "terraform plan" to see
any changes that are required for your infrastructure. All Terraform commands
should now work.
If you ever set or change modules or backend configuration for Terraform,
rerun this command to reinitialize your working directory. If you forget, other
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commands will detect it and remind you to do so if necessary.
`
const outputInitProvidersUnconstrained = `
The following providers do not have any version constraints in configuration,
so the latest version was installed.
To prevent automatic upgrades to new major versions that may contain breaking
changes, we recommend adding version constraints in a required_providers block
in your configuration, with the constraint strings suggested below.
`
// providerProtocolTooOld is a message sent to the CLI UI if the provider's
// supported protocol versions are too old for the user's version of terraform,
// but a newer version of the provider is compatible.
const providerProtocolTooOld = `Provider %q v%s is not compatible with Terraform %s.
Provider version %s is the latest compatible version. Select it with the following version constraint:
version = %q
Terraform checked all of the plugin versions matching the given constraint:
%s
Consult the documentation for this provider for more information on compatibility between provider and Terraform versions.
`
// providerProtocolTooNew is a message sent to the CLI UI if the provider's
// supported protocol versions are too new for the user's version of terraform,
// and the user could either upgrade terraform or choose an older version of the
// provider.
const providerProtocolTooNew = `Provider %q v%s is not compatible with Terraform %s.
You need to downgrade to v%s or earlier. Select it with the following constraint:
version = %q
Terraform checked all of the plugin versions matching the given constraint:
%s
Consult the documentation for this provider for more information on compatibility between provider and Terraform versions.
Alternatively, upgrade to the latest version of Terraform for compatibility with newer provider releases.
`
// No version of the provider is compatible.
const errProviderVersionIncompatible = `No compatible versions of provider %s were found.`