From 39be7cf7d752d6d6dbaf396a8d925d808dccb7bb Mon Sep 17 00:00:00 2001
From: Mark Henderson <mhenderson@stackoverflow.com>
Date: Wed, 27 Jul 2016 03:41:33 -0400
Subject: [PATCH] Added grafana-cli  command. Added public documentation for
 specifying plugin version when installing. (#5665)

---
 pkg/cmd/grafana-cli/commands/commands.go      |  6 +++-
 .../commands/listversions_command.go          | 36 +++++++++++++++++++
 2 files changed, 41 insertions(+), 1 deletion(-)
 create mode 100644 pkg/cmd/grafana-cli/commands/listversions_command.go

diff --git a/pkg/cmd/grafana-cli/commands/commands.go b/pkg/cmd/grafana-cli/commands/commands.go
index 3f8826ce8ba..2099a576647 100644
--- a/pkg/cmd/grafana-cli/commands/commands.go
+++ b/pkg/cmd/grafana-cli/commands/commands.go
@@ -27,12 +27,16 @@ func runCommand(command func(commandLine CommandLine) error) func(context *cli.C
 var pluginCommands = []cli.Command{
 	{
 		Name:   "install",
-		Usage:  "install <plugin id>",
+		Usage:  "install <plugin id> <plugin version (optional)>",
 		Action: runCommand(installCommand),
 	}, {
 		Name:   "list-remote",
 		Usage:  "list remote available plugins",
 		Action: runCommand(listremoteCommand),
+	}, {
+		Name:   "list-versions",
+		Usage:  "list-versions <plugin id>",
+		Action: runCommand(listversionsCommand),
 	}, {
 		Name:    "update",
 		Usage:   "update <plugin id>",
diff --git a/pkg/cmd/grafana-cli/commands/listversions_command.go b/pkg/cmd/grafana-cli/commands/listversions_command.go
new file mode 100644
index 00000000000..95c536e94f0
--- /dev/null
+++ b/pkg/cmd/grafana-cli/commands/listversions_command.go
@@ -0,0 +1,36 @@
+package commands
+
+import (
+	"errors"
+
+	"github.com/grafana/grafana/pkg/cmd/grafana-cli/logger"
+	s "github.com/grafana/grafana/pkg/cmd/grafana-cli/services"
+)
+
+func validateVersionInput(c CommandLine) error {
+	arg := c.Args().First()
+	if arg == "" {
+		return errors.New("please specify plugin to list versions for")
+	}
+
+	return nil
+}
+
+func listversionsCommand(c CommandLine) error {
+	if err := validateVersionInput(c); err != nil {
+		return err
+	}
+
+	pluginToList := c.Args().First()
+
+	plugin, err := s.GetPlugin(pluginToList, c.GlobalString("repo"))
+	if err != nil {
+		return err
+	}
+
+	for _, i := range plugin.Versions {
+		logger.Infof("%v\n", i.Version)
+	}
+
+	return nil
+}