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37a6331ebf
We always add an empty line when asking/checking the version. We should only do that if there is a new version available. While this is purely cosmetic, it reads better and is consistent with packer.
122 lines
3.2 KiB
Go
122 lines
3.2 KiB
Go
package command
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import (
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"bytes"
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"fmt"
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"sort"
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)
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// VersionCommand is a Command implementation prints the version.
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type VersionCommand struct {
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Meta
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Revision string
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Version string
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VersionPrerelease string
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CheckFunc VersionCheckFunc
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}
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// VersionCheckFunc is the callback called by the Version command to
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// check if there is a new version of Terraform.
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type VersionCheckFunc func() (VersionCheckInfo, error)
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// VersionCheckInfo is the return value for the VersionCheckFunc callback
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// and tells the Version command information about the latest version
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// of Terraform.
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type VersionCheckInfo struct {
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Outdated bool
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Latest string
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Alerts []string
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}
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func (c *VersionCommand) Help() string {
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return ""
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}
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func (c *VersionCommand) Run(args []string) int {
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var versionString bytes.Buffer
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args, err := c.Meta.process(args, false)
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if err != nil {
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return 1
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}
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fmt.Fprintf(&versionString, "Terraform v%s", c.Version)
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if c.VersionPrerelease != "" {
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fmt.Fprintf(&versionString, "-%s", c.VersionPrerelease)
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if c.Revision != "" {
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fmt.Fprintf(&versionString, " (%s)", c.Revision)
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}
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}
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c.Ui.Output(versionString.String())
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// We'll also attempt to print out the selected plugin versions. We can
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// do this only if "terraform init" was already run and thus we've committed
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// to a specific set of plugins. If not, the plugins lock will be empty
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// and so we'll show _no_ providers.
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//
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// Generally-speaking this is a best-effort thing that will give us a good
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// result in the usual case where the user successfully ran "terraform init"
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// and then hit a problem running _another_ command.
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providerPlugins := c.providerPluginSet()
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pluginsLockFile := c.providerPluginsLock()
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pluginsLock := pluginsLockFile.Read()
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var pluginVersions []string
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for meta := range providerPlugins {
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name := meta.Name
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wantHash, wanted := pluginsLock[name]
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if !wanted {
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// Ignore providers that aren't used by the current config at all
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continue
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}
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gotHash, err := meta.SHA256()
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if err != nil {
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// if we can't read the file to hash it, ignore it.
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continue
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}
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if !bytes.Equal(gotHash, wantHash) {
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// Not the plugin we've locked, so ignore it.
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continue
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}
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// If we get here then we've found a selected plugin, so we'll print
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// out its details.
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if meta.Version == "0.0.0" {
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pluginVersions = append(pluginVersions, fmt.Sprintf("+ provider.%s (unversioned)", name))
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} else {
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pluginVersions = append(pluginVersions, fmt.Sprintf("+ provider.%s v%s", name, meta.Version))
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}
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}
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if len(pluginVersions) != 0 {
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sort.Strings(pluginVersions)
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for _, str := range pluginVersions {
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c.Ui.Output(str)
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}
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}
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// If we have a version check function, then let's check for
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// the latest version as well.
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if c.CheckFunc != nil {
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// Check the latest version
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info, err := c.CheckFunc()
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if err != nil {
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c.Ui.Error(fmt.Sprintf(
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"\nError checking latest version: %s", err))
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}
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if info.Outdated {
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c.Ui.Output(fmt.Sprintf(
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"\nYour version of Terraform is out of date! The latest version\n"+
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"is %s. You can update by downloading from www.terraform.io/downloads.html",
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info.Latest))
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}
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}
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return 0
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}
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func (c *VersionCommand) Synopsis() string {
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return "Prints the Terraform version"
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}
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