terraform/command/state_meta.go

209 lines
6.4 KiB
Go
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package command
import (
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"fmt"
"sort"
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"time"
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"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/states"
"github.com/hashicorp/terraform/states/statemgr"
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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"github.com/hashicorp/terraform/tfdiags"
backendLocal "github.com/hashicorp/terraform/backend/local"
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)
// StateMeta is the meta struct that should be embedded in state subcommands.
type StateMeta struct {
Meta
}
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// State returns the state for this meta. This gets the appropriate state from
// the backend, but changes the way that backups are done. This configures
// backups to be timestamped rather than just the original state path plus a
// backup path.
func (c *StateMeta) State() (statemgr.Full, error) {
var realState statemgr.Full
backupPath := c.backupPath
stateOutPath := c.statePath
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// use the specified state
if c.statePath != "" {
realState = statemgr.NewFilesystem(c.statePath)
} else {
// Load the backend
b, backendDiags := c.Backend(nil)
if backendDiags.HasErrors() {
return nil, backendDiags.Err()
}
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workspace := c.Workspace()
// Get the state
s, err := b.StateMgr(workspace)
if err != nil {
return nil, err
}
// Get a local backend
localRaw, backendDiags := c.Backend(&BackendOpts{ForceLocal: true})
if backendDiags.HasErrors() {
// This should never fail
panic(backendDiags.Err())
}
localB := localRaw.(*backendLocal.Local)
_, stateOutPath, _ = localB.StatePaths(workspace)
if err != nil {
return nil, err
}
realState = s
}
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// We always backup state commands, so set the back if none was specified
// (the default is "-", but some tests bypass the flag parsing).
if backupPath == "-" || backupPath == "" {
// Determine the backup path. stateOutPath is set to the resulting
// file where state is written (cached in the case of remote state)
backupPath = fmt.Sprintf(
"%s.%d%s",
stateOutPath,
time.Now().UTC().Unix(),
DefaultBackupExtension)
}
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// If the backend is local (which it should always be, given our asserting
// of it above) we can now enable backups for it.
if lb, ok := realState.(*statemgr.Filesystem); ok {
lb.SetBackupPath(backupPath)
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}
return realState, nil
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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func (c *StateMeta) lookupResourceInstanceAddr(state *states.State, allowMissing bool, addrStr string) ([]addrs.AbsResourceInstance, tfdiags.Diagnostics) {
target, diags := addrs.ParseTargetStr(addrStr)
if diags.HasErrors() {
return nil, diags
}
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command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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targetAddr := target.Subject
var ret []addrs.AbsResourceInstance
switch addr := targetAddr.(type) {
case addrs.ModuleInstance:
// Matches all instances within the indicated module and all of its
// descendent modules.
ms := state.Module(addr)
if ms == nil {
if !allowMissing {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Unknown module",
fmt.Sprintf(`The current state contains no module at %s. If you've just added this module to the configuration, you must run "terraform apply" first to create the module's entry in the state.`, addr),
))
}
break
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}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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ret = append(ret, c.collectModuleResourceInstances(ms)...)
for _, cms := range state.Modules {
candidateAddr := ms.Addr
if len(candidateAddr) > len(addr) && candidateAddr[:len(addr)].Equal(addr) {
ret = append(ret, c.collectModuleResourceInstances(cms)...)
}
}
case addrs.AbsResource:
// Matches all instances of the specific selected resource.
rs := state.Resource(addr)
if rs == nil {
if !allowMissing {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Unknown resource",
fmt.Sprintf(`The current state contains no resource %s. If you've just added this resource to the configuration, you must run "terraform apply" first to create the resource's entry in the state.`, addr),
))
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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break
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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ret = append(ret, c.collectResourceInstances(addr.Module, rs)...)
case addrs.AbsResourceInstance:
is := state.ResourceInstance(addr)
if is == nil {
if !allowMissing {
diags = diags.Append(tfdiags.Sourceless(
tfdiags.Error,
"Unknown resource instance",
fmt.Sprintf(`The current state contains no resource instance %s. If you've just added its resource to the configuration or have changed the count or for_each arguments, you must run "terraform apply" first to update the resource's entry in the state.`, addr),
))
}
break
}
ret = append(ret, addr)
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}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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sort.Slice(ret, func(i, j int) bool {
return ret[i].Less(ret[j])
})
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command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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return ret, diags
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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func (c *StateMeta) lookupSingleResourceInstanceAddr(state *states.State, addrStr string) (addrs.AbsResourceInstance, tfdiags.Diagnostics) {
return addrs.ParseAbsResourceInstanceStr(addrStr)
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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func (c *StateMeta) lookupSingleStateObjectAddr(state *states.State, addrStr string) (addrs.Targetable, tfdiags.Diagnostics) {
target, diags := addrs.ParseTargetStr(addrStr)
if diags.HasErrors() {
return nil, diags
}
return target.Subject, diags
}
func (c *StateMeta) lookupResourceInstanceAddrs(state *states.State, addrStrs ...string) ([]addrs.AbsResourceInstance, tfdiags.Diagnostics) {
var ret []addrs.AbsResourceInstance
var diags tfdiags.Diagnostics
for _, addrStr := range addrStrs {
moreAddrs, moreDiags := c.lookupResourceInstanceAddr(state, false, addrStr)
ret = append(ret, moreAddrs...)
diags = diags.Append(moreDiags)
}
return ret, diags
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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func (c *StateMeta) lookupAllResourceInstanceAddrs(state *states.State) ([]addrs.AbsResourceInstance, tfdiags.Diagnostics) {
var ret []addrs.AbsResourceInstance
var diags tfdiags.Diagnostics
for _, ms := range state.Modules {
ret = append(ret, c.collectModuleResourceInstances(ms)...)
}
sort.Slice(ret, func(i, j int) bool {
return ret[i].Less(ret[j])
})
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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return ret, diags
}
func (c *StateMeta) collectModuleResourceInstances(ms *states.Module) []addrs.AbsResourceInstance {
var ret []addrs.AbsResourceInstance
for _, rs := range ms.Resources {
ret = append(ret, c.collectResourceInstances(ms.Addr, rs)...)
}
return ret
}
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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func (c *StateMeta) collectResourceInstances(moduleAddr addrs.ModuleInstance, rs *states.Resource) []addrs.AbsResourceInstance {
var ret []addrs.AbsResourceInstance
for key := range rs.Instances {
ret = append(ret, rs.Addr.Instance(key))
command: Fix various issues in the "terraform state ..." subcommands In earlier refactoring we updated these commands to support the new address and state types, but attempted to partially retain the old-style "StateFilter" abstraction that originally lived in the Terraform package, even though that was no longer being used for any other functionality. Unfortunately the adaptation of the existing filtering to the new types wasn't exact and so these commands ended up having a few bugs that were not covered by the existing tests. Since the old StateFilter behavior was the source of various misbehavior anyway, here it's removed altogether and replaced with some simpler functions in the state_meta.go file that are tailored to the use-cases of these sub-commands. As well as just generally behaving more consistently with the other parts of Terraform that use the new resource address types, this commit fixes the following bugs: - A resource address of aws_instance.foo would previously match an resource of that type and name in any module, which disagreed with the expected interpretation elsewhere of meaning a single resource in the root module. - The "terraform state mv" command was not supporting moves from a single resource address to an indexed address and vice-versa, because the old logic didn't need to make that distinction while they are two separate address types in the new logic. Now we allow resources that do not have count/for_each to be treated as if they are instances for the purposes of this command, which is a better match for likely user intent and for the old behavior. Finally, we also clean up a little some of the usage output from these commands, which hasn't been updated for some time and so had both some stale information and some inaccurate terminology.
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}
return ret
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}
func (c *StateMeta) lookupAllResources(state *states.State) ([]*states.Resource, tfdiags.Diagnostics) {
var ret []*states.Resource
var diags tfdiags.Diagnostics
for _, ms := range state.Modules {
for _, resource := range ms.Resources {
ret = append(ret, resource)
}
}
return ret, diags
}