Adds ability to list installed plugins from CLI

src/cli/plugin/__tests__/setting_parser.js

@@ -76,19 +76,44 @@ describe('kibana cli', function () {
           options = { install: 'dummy/dummy', pluginDir: fromRoot('installedPlugins') };
         });
 
-        it('should require the user to specify either install and remove', function () {
+        it('should require the user to specify either install, remove, or list', function () {
           options.install = null;
           parser = settingParser(options);
 
-          expect(parser.parse).withArgs().to.throwError(/Please specify either --install or --remove./);
+          expect(parser.parse).withArgs().to.throwError(/Please specify either --install, --remove, or --list./);
         });
 
         it('should not allow the user to specify both install and remove', function () {
           options.remove = 'package';
           options.install = 'org/package/version';
           parser = settingParser(options);
 
-          expect(parser.parse).withArgs().to.throwError(/Please specify either --install or --remove./);
+          expect(parser.parse).withArgs().to.throwError(/Please specify either --install, --remove, or --list./);
+        });
+
+        it('should not allow the user to specify both install and list', function () {
+          options.list = true;
+          options.install = 'org/package/version';
+          parser = settingParser(options);
+
+          expect(parser.parse).withArgs().to.throwError(/Please specify either --install, --remove, or --list./);
+        });
+
+        it('should not allow the user to specify both remove and list', function () {
+          options.list = true;
+          options.remove = 'package';
+          parser = settingParser(options);
+
+          expect(parser.parse).withArgs().to.throwError(/Please specify either --install, --remove, or --list./);
+        });
+
+        it('should not allow the user to specify install, remove, and list', function () {
+          options.list = true;
+          options.install = 'org/package/version';
+          options.remove = 'package';
+          parser = settingParser(options);
+
+          expect(parser.parse).withArgs().to.throwError(/Please specify either --install, --remove, or --list./);
         });
 
         describe('quiet option', function () {
@@ -293,7 +318,7 @@ describe('kibana cli', function () {
         describe('remove option', function () {
 
           it('should set settings.action property to "remove"', function () {
-            options.install = null;
+            delete options.install;
             options.remove = 'package';
             parser = settingParser(options);
 
@@ -303,7 +328,7 @@ describe('kibana cli', function () {
           });
 
           it('should allow one part to the remove parameter', function () {
-            options.install = null;
+            delete options.install;
             options.remove = 'test-plugin';
             parser = settingParser(options);
 
@@ -312,8 +337,8 @@ describe('kibana cli', function () {
             expect(settings).to.have.property('package', 'test-plugin');
           });
 
-          it('should not allow more than one part to the install parameter', function () {
-            options.install = null;
+          it('should not allow more than one part to the remove parameter', function () {
+            delete options.install;
             options.remove = 'kibana/test-plugin';
             parser = settingParser(options);
 
@@ -322,7 +347,7 @@ describe('kibana cli', function () {
           });
 
           it('should populate the pluginPath', function () {
-            options.install = null;
+            delete options.install;
             options.remove = 'test-plugin';
             parser = settingParser(options);
 
@@ -334,6 +359,21 @@ describe('kibana cli', function () {
 
         });
 
+        describe('list option', function () {
+
+          it('should set settings.action property to "list"', function () {
+            delete options.install;
+            delete options.remove;
+            options.list = true;
+            parser = settingParser(options);
+
+            var settings = parser.parse();
+
+            expect(settings).to.have.property('action', 'list');
+          });
+
+        });
+
       });
 
     });

src/cli/plugin/plugin.js

@@ -3,6 +3,7 @@ const fromRoot = utils('fromRoot');
 const settingParser = require('./setting_parser');
 const installer = require('./plugin_installer');
 const remover = require('./plugin_remover');
+const lister = require('./plugin_lister');
 const pluginLogger = require('./plugin_logger');
 
 export default function pluginCli(program) {
@@ -18,18 +19,24 @@ export default function pluginCli(program) {
 
     const logger = pluginLogger(settings);
 
-    if (settings.action === 'install') {
-      installer.install(settings, logger);
-    }
-    if (settings.action === 'remove') {
-      remover.remove(settings, logger);
+    switch (settings.action) {
+      case 'install':
+        installer.install(settings, logger);
+        break;
+      case 'remove':
+        remover.remove(settings, logger);
+        break;
+      case 'list':
+        lister.list(settings, logger);
+        break;
     }
   }
 
   program
     .command('plugin')
     .option('-i, --install <org>/<plugin>/<version>', 'The plugin to install')
     .option('-r, --remove <plugin>', 'The plugin to remove')
+    .option('-l, --list', 'List installed plugins')
     .option('-q, --quiet', 'Disable all process messaging except errors')
     .option('-s, --silent', 'Disable all process messaging')
     .option('-u, --url <url>', 'Specify download url')

src/cli/plugin/plugin_lister.js

@@ -0,0 +1,8 @@
+const fs = require('fs');
+
+export function list(settings, logger) {
+  fs.readdirSync(settings.pluginDir)
+  .forEach(function (pluginFile) {
+    logger.log(pluginFile);
+  });
+}

src/cli/plugin/setting_parser.js

@@ -1,5 +1,6 @@
 const { resolve } = require('path');
 const expiry = require('expiry-js');
+import { intersection } from 'lodash';
 
 export default function createSettingParser(options) {
   function parseMilliseconds(val) {
@@ -22,6 +23,10 @@ export default function createSettingParser(options) {
     return 'https://download.elastic.co/' + settings.organization + '/' + settings.package + '/' + filename;
   }
 
+  function areMultipleOptionsChosen(options, choices) {
+    return intersection(Object.keys(options), choices).length > 1;
+  }
+
   function parse() {
     let parts;
     let settings = {
@@ -84,8 +89,12 @@ export default function createSettingParser(options) {
       settings.package = parts.shift();
     }
 
-    if (!settings.action || (options.install && options.remove)) {
-      throw new Error('Please specify either --install or --remove.');
+    if (options.list) {
+      settings.action = 'list';
+    }
+
+    if (!settings.action || areMultipleOptionsChosen(options, [ 'install', 'remove', 'list' ])) {
+      throw new Error('Please specify either --install, --remove, or --list.');
     }
 
     settings.pluginDir = options.pluginDir;