terraform/command/providers_schema.go

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package command
import (
"fmt"
"os"
"github.com/hashicorp/terraform/backend"
"github.com/hashicorp/terraform/command/jsonprovider"
"github.com/hashicorp/terraform/tfdiags"
)
// ProvidersCommand is a Command implementation that prints out information
// about the providers used in the current configuration/state.
type ProvidersSchemaCommand struct {
Meta
}
func (c *ProvidersSchemaCommand) Help() string {
return providersSchemaCommandHelp
}
func (c *ProvidersSchemaCommand) Synopsis() string {
return "Prints the schemas of the providers used in the configuration"
}
func (c *ProvidersSchemaCommand) Run(args []string) int {
args, err := c.Meta.process(args, false)
if err != nil {
return 1
}
cmdFlags := c.Meta.defaultFlagSet("providers schema")
var jsonOutput bool
cmdFlags.BoolVar(&jsonOutput, "json", false, "produce JSON output")
cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
if err := cmdFlags.Parse(args); err != nil {
c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
return 1
}
if !jsonOutput {
c.Ui.Error(
"The `terraform providers schema` command requires the `-json` flag.\n")
cmdFlags.Usage()
return 1
}
// Check for user-supplied plugin path
if c.pluginPath, err = c.loadPluginPath(); err != nil {
c.Ui.Error(fmt.Sprintf("Error loading plugin path: %s", err))
return 1
}
var diags tfdiags.Diagnostics
// Load the backend
b, backendDiags := c.Backend(nil)
diags = diags.Append(backendDiags)
if backendDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
// We require a local backend
local, ok := b.(backend.Local)
if !ok {
c.showDiagnostics(diags) // in case of any warnings in here
c.Ui.Error(ErrUnsupportedLocalOp)
return 1
}
// we expect that the config dir is the cwd
cwd, err := os.Getwd()
if err != nil {
c.Ui.Error(fmt.Sprintf("Error getting cwd: %s", err))
return 1
}
// Build the operation
opReq := c.Operation(b)
opReq.ConfigDir = cwd
opReq.ConfigLoader, err = c.initConfigLoader()
opReq.AllowUnsetVariables = true
if err != nil {
diags = diags.Append(err)
c.showDiagnostics(diags)
return 1
}
// Get the context
ctx, _, ctxDiags := local.Context(opReq)
diags = diags.Append(ctxDiags)
if ctxDiags.HasErrors() {
c.showDiagnostics(diags)
return 1
}
schemas := ctx.Schemas()
jsonSchemas, err := jsonprovider.Marshal(schemas)
if err != nil {
c.Ui.Error(fmt.Sprintf("Failed to marshal provider schemas to json: %s", err))
return 1
}
c.Ui.Output(string(jsonSchemas))
return 0
}
const providersSchemaCommandHelp = `
Usage: terraform providers schema -json
Prints out a json representation of the schemas for all providers used
in the current configuration.
`