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4ed06a9227
For the moment this is just a lightly-adapted copy of ModuleTreeDependencies named ConfigTreeDependencies, with the goal that the two can live concurrently for the moment while not all callers are yet updated and then we can drop ModuleTreeDependencies and its helper functions altogether in a later commit. This can then be used to make "terraform init" and "terraform providers" work properly with the HCL2-powered configuration loader.
130 lines
3.1 KiB
Go
130 lines
3.1 KiB
Go
package command
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import (
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"fmt"
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"sort"
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"github.com/hashicorp/terraform/moduledeps"
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"github.com/hashicorp/terraform/terraform"
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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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c.Meta.process(args, false)
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cmdFlags := c.Meta.flagSet("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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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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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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state, err := b.State(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 := state.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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s := state.State()
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depTree := terraform.ConfigTreeDependencies(config, s)
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depTree.SortDescendents()
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printRoot := treeprint.New()
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providersCommandPopulateTreeNode(printRoot, depTree)
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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 *moduledeps.Module) {
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names := make([]string, 0, len(deps.Providers))
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for name := range deps.Providers {
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names = append(names, string(name))
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}
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sort.Strings(names)
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for _, name := range names {
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dep := deps.Providers[moduledeps.ProviderInstance(name)]
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versionsStr := dep.Constraints.String()
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if versionsStr != "" {
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versionsStr = " " + versionsStr
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}
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var reasonStr string
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switch dep.Reason {
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case moduledeps.ProviderDependencyInherited:
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reasonStr = " (inherited)"
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case moduledeps.ProviderDependencyFromState:
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reasonStr = " (from state)"
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}
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node.AddNode(fmt.Sprintf("provider.%s%s%s", name, versionsStr, reasonStr))
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}
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for _, child := range deps.Children {
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childNode := node.AddBranch(fmt.Sprintf("module.%s", child.Name))
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providersCommandPopulateTreeNode(childNode, child)
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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 tree of modules in the referenced configuration annotated with
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their provider requirements.
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This provides an overview of all of the provider requirements across all
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referenced modules, as an aid to understanding why particular provider
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plugins are needed and why particular versions are selected.
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`
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