140 lines
3.4 KiB
Go
140 lines
3.4 KiB
Go
package command
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import (
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"fmt"
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"path/filepath"
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"github.com/hashicorp/terraform/configs"
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"github.com/hashicorp/terraform/internal/getproviders"
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"github.com/hashicorp/terraform/tfdiags"
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"github.com/xlab/treeprint"
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)
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// ProvidersCommand is a Command implementation that prints out information
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// about the providers used in the current configuration/state.
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type ProvidersCommand struct {
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Meta
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}
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func (c *ProvidersCommand) Help() string {
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return providersCommandHelp
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}
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func (c *ProvidersCommand) Synopsis() string {
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return "Prints a tree of the providers used in the configuration"
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}
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func (c *ProvidersCommand) Run(args []string) int {
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args = c.Meta.process(args)
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cmdFlags := c.Meta.defaultFlagSet("providers")
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cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
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if err := cmdFlags.Parse(args); err != nil {
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c.Ui.Error(fmt.Sprintf("Error parsing command-line flags: %s\n", err.Error()))
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return 1
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}
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configPath, err := ModulePath(cmdFlags.Args())
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if err != nil {
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c.Ui.Error(err.Error())
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return 1
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}
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var diags tfdiags.Diagnostics
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empty, err := configs.IsEmptyDir(configPath)
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if err != nil {
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"Error validating configuration directory",
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fmt.Sprintf("Terraform encountered an unexpected error while verifying that the given configuration directory is valid: %s.", err),
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))
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c.showDiagnostics(diags)
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return 1
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}
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if empty {
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absPath, err := filepath.Abs(configPath)
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if err != nil {
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absPath = configPath
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}
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diags = diags.Append(tfdiags.Sourceless(
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tfdiags.Error,
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"No configuration files",
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fmt.Sprintf("The directory %s contains no Terraform configuration files.", absPath),
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))
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c.showDiagnostics(diags)
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return 1
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}
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config, configDiags := c.loadConfig(configPath)
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diags = diags.Append(configDiags)
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if configDiags.HasErrors() {
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c.showDiagnostics(diags)
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return 1
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}
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// Load the backend
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b, backendDiags := c.Backend(&BackendOpts{
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Config: config.Module.Backend,
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})
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diags = diags.Append(backendDiags)
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if backendDiags.HasErrors() {
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c.showDiagnostics(diags)
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return 1
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}
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// Get the state
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env := c.Workspace()
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s, err := b.StateMgr(env)
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if err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to load state: %s", err))
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return 1
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}
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if err := s.RefreshState(); err != nil {
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c.Ui.Error(fmt.Sprintf("Failed to load state: %s", err))
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return 1
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}
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reqs, reqDiags := config.ProviderRequirements()
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if reqDiags.HasErrors() {
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c.showDiagnostics(configDiags)
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return 1
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}
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state := s.State()
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if state != nil {
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stateReqs := state.ProviderRequirements()
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reqs = reqs.Merge(stateReqs)
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}
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printRoot := treeprint.New()
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providersCommandPopulateTreeNode(printRoot, reqs)
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c.Ui.Output(printRoot.String())
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c.showDiagnostics(diags)
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if diags.HasErrors() {
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return 1
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}
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return 0
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}
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func providersCommandPopulateTreeNode(node treeprint.Tree, deps getproviders.Requirements) {
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for fqn, dep := range deps {
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versionsStr := getproviders.VersionConstraintsString(dep)
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if versionsStr != "" {
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versionsStr = " " + versionsStr
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}
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node.AddNode(fmt.Sprintf("provider[%s]%s", fqn.String(), versionsStr))
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}
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}
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const providersCommandHelp = `
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Usage: terraform providers [dir]
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Prints out a list of providers required by the configuration and state.
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This provides an overview of all of the provider requirements as an aid to
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understanding why particular provider plugins are needed and why particular
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versions are selected.
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`
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