Add Cloud Shell feature

Screen Shot:
https://drive.google.com/file/d/0B1UFZO9xX8eweERNX2FWVGRrMXM/view
Short Video:
https://youtu.be/lYt2U7qZG38

This patch realizes the Cloud Shell feature as following manner:

1. Add 'Cloud Shell' menu on the top menu bar.
2. When 'Cloud Shell' menu clicked, create console area on
   the bottom of window.
3. If cloud shell container does not exists for the user,
   create the container.
4. If cloud shell container exists, attach the console area
   to the container.
5. Each time when attach to the container, clouds.yaml will be
   exported into the container.
6. Password will be not imported into the container,
   so user should set manually 'OS_PASSWORD' into envirinment
   variables or 'password' into clouds.yaml.

Change-Id: Ia26be196758e5f3617b31750702a6c54436efb93
Depends-On: Ie4bc4d7302ce80ed9925db4156ff52f928460aca

_0330_cloud_shell_settings.py.sample

@@ -0,0 +1 @@
+CLOUD_SHELL_IMAGE = "gbraad/openstack-client:alpine"

doc/source/configuration/index.rst

@@ -2,9 +2,19 @@
 Configuration
 =============
 
-Zun UI has no configuration option.
+Image for Cloud Shell
+---------------------
 
-For more configurations, see
+The image for Cloud Shell is set as `gbraad/openstack-client:alpine`
+by default. If you want to use other image, edit `CLOUD_SHELL_IMAGE`
+variable in file `_0330_cloud_shell_settings.py.sample`, and copy
+it to `horizon/openstack_dashboard/local/local_settings.d/_0330_cloud_shell_settings.py`,
+and restart Horizon.
+
+For more configurations
+-----------------------
+
+See
 `Configuration Guide
 <https://docs.openstack.org/horizon/latest/configuration/index.html>`__
 in the Horizon documentation.

zun_ui/api/client.py

@@ -205,6 +205,10 @@ def container_attach(request, id):
     return zunclient(request).containers.attach(id)
 
 
+def container_resize(request, id, width, height):
+    return zunclient(request).containers.resize(id, width, height)
+
+
 def image_list(request, limit=None, marker=None, sort_key=None,
                sort_dir=None, detail=True):
     return zunclient(request).images.list(limit, marker, sort_key,

zun_ui/api/rest_api.py

@@ -90,6 +90,10 @@ class ContainerActions(generic.View):
             return client.container_kill(request, id, signal)
         elif action == 'attach':
             return client.container_attach(request, id)
+        elif action == 'resize':
+            width = request.DATA.get("width") or 500
+            height = request.DATA.get("height") or 400
+            return client.container_resize(request, id, width, height)
 
 
 @urls.register

zun_ui/content/cloud_shell/views.py

@@ -0,0 +1,27 @@
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from django.conf import settings
+
+from horizon import views
+
+
+class CloudShellView(views.HorizonTemplateView):
+    template_name = 'cloud_shell/cloud_shell.html'
+
+    def get_context_data(self, **kwargs):
+        context = super(CloudShellView, self).get_context_data(**kwargs)
+        if hasattr(settings, "CLOUD_SHELL_IMAGE"):
+            context['CLOUD_SHELL_IMAGE'] = settings.CLOUD_SHELL_IMAGE
+        else:
+            context['CLOUD_SHELL_IMAGE'] = "gbraad/openstack-client:alpine"
+        return context

zun_ui/enabled/_0330_cloud_shell.py

@@ -0,0 +1,26 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+FEATURE = True
+
+ADD_ANGULAR_MODULES = [
+    'horizon.cloud-shell'
+]
+
+ADD_SCSS_FILES = [
+    'cloud-shell/cloud-shell.scss'
+]
+
+# A list of extensible header views to be displayed
+ADD_HEADER_SECTIONS = [
+    'zun_ui.content.cloud_shell.views.CloudShellView',
+]

zun_ui/static/cloud-shell/cloud-shell.controller.js

@@ -0,0 +1,147 @@
+/**
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+(function() {
+  "use strict";
+
+  angular
+    .module('horizon.cloud-shell')
+    .controller('horizon.cloud-shell.controller', cloudShellController);
+
+  cloudShellController.$inject = [
+    '$scope',
+    'horizon.app.core.openstack-service-api.zun',
+    'horizon.dashboard.container.webRoot',
+    'horizon.framework.util.http.service'
+  ];
+
+  function cloudShellController(
+    $scope,
+    zun,
+    webRoot,
+    http
+  ) {
+    var ctrl = this;
+    ctrl.openInNewWindow = openInNewWindow;
+    ctrl.close = closeShell;
+    ctrl.consoleUrl = null;
+    ctrl.container = {};
+    ctrl.resizeTerminal = resizeTerminal;
+
+    // close existing shell
+    closeShell();
+
+    // default size for shell
+    var cols = 80;
+    var rows = 24;
+
+    // get openrc v3 for OpenStack Client
+    var cloudsYaml;
+    http.get('/project/api_access/clouds.yaml/').then(function(response) {
+      // cloud.yaml to be set to .config/openstack/clouds.yaml in container
+      cloudsYaml = response.data;
+
+      ctrl.user = cloudsYaml.match(/username: "(.+)"/)[1];
+      ctrl.project = cloudsYaml.match(/project_name: "(.+)"/)[1];
+      ctrl.userDomain = cloudsYaml.match(/user_domain_name: "(.+)"/);
+      ctrl.projectDomain = cloudsYaml.match(/project_domain_name: "(.+)"/);
+      ctrl.domain = (ctrl.userDomain.length === 2) ? ctrl.userDomain[1] : ctrl.projectDomain[1];
+      ctrl.region = cloudsYaml.match(/region_name: "(.+)"/)[1];
+
+      // container name
+      ctrl.container.name = "cloud-shell-" + ctrl.user + "-" + ctrl.project +
+        "-" + ctrl.domain + "-" + ctrl.region;
+
+      // get container
+      zun.getContainer(ctrl.container.name, true).then(onGetContainer, onFailGetContainer);
+    });
+
+    function onGetContainer(response) {
+      ctrl.container = response.data;
+
+      // attach console to existing container
+      ctrl.consoleUrl = webRoot + "containers/" + ctrl.container.id + "/console";
+      var console = $("<p>To display console, interactive mode needs to be enabled " +
+        "when this container was created.</p>");
+      if (ctrl.container.status !== "Running") {
+        console = $("<p>Container is not running. Please wait for starting up container.</p>");
+      } else if (ctrl.container.interactive) {
+        console = $("<iframe id=\"console_embed\" src=\"" + ctrl.consoleUrl +
+          "\" style=\"width:100%;height:100%\"></iframe>");
+
+        // execute openrc.sh on the container
+        var command = "sh -c 'printf \"" + cloudsYaml + "\" > ~/.config/openstack/clouds.yaml'";
+        zun.executeContainer(ctrl.container.id, {command: command}).then(function() {
+          var command = "sh -c 'printf \"export OS_CLOUD=openstack\" > ~/.bashrc'";
+          zun.executeContainer(ctrl.container.id, {command: command}).then(function() {
+            angular.noop();
+          });
+        });
+      }
+      // append shell content
+      angular.element("#shell-content").append(console);
+    }
+
+    // watcher for iframe contents loading, seems to emit once.
+    $scope.$watch(function() {
+      return angular.element("#shell-content > iframe").contents()
+        .find("#terminalNode").attr("termCols");
+    }, resizeTerminal);
+    // event handler to resize console according to window resize.
+    angular.element(window).bind('resize', resizeTerminal);
+    // also, add resizeTerminal into callback attribute for resizer directive
+    function resizeTerminal() {
+      var shellIframe = angular.element("#shell-content > iframe");
+      var newCols = shellIframe.contents().find("#terminalNode").attr("termCols");
+      var newRows = shellIframe.contents().find("#terminalNode").attr("termRows");
+      if ((newCols !== cols || newRows !== rows) && newCols > 0 && newRows > 0) {
+        // resize tty
+        zun.resizeContainer(ctrl.container.id, {width: newCols, height: newRows}).then(function() {
+          cols = newCols;
+          rows = newRows;
+        });
+      }
+    }
+
+    function onFailGetContainer() {
+      // create new container and attach console to it.
+      var image = angular.element("#cloud-shell-menu").attr("cloud-shell-image");
+      var model = {
+        name: ctrl.container.name,
+        image: image,
+        command: "/bin/bash",
+        interactive: true,
+        run: true,
+        environment: "OS_CLOUD=openstack",
+        labels: "cloud-shell=" + ctrl.container.name
+      };
+      zun.createContainer(model).then(function (response) {
+        // attach
+        onGetContainer({data: {id: response.data.id}});
+      });
+    }
+
+    function openInNewWindow() {
+      // open shell in new window
+      window.open(ctrl.consoleUrl, "_blank");
+      closeShell();
+    }
+
+    function closeShell() {
+      // close shell
+      angular.element("#cloud-shell").remove();
+      angular.element("#cloud-shell-resizer").remove();
+    }
+  }
+})();

zun_ui/static/cloud-shell/cloud-shell.html

@@ -0,0 +1,23 @@
+<div ng-controller="horizon.cloud-shell.controller as ctrl">
+  <resizer id="cloud-shell-resizer"
+    direction="horizontal"
+    height="6"
+    bottom="#cloud-shell"
+    callback="ctrl.resizeTerminal()">
+  </resizer>
+  <div id="cloud-shell">
+    <div id="shell-header">
+      {$ ctrl.container.name $}
+      <!--
+      <a class="cloud-shell-external" ng-click="ctrl.openInNewWindow()">
+        <span class="fa fa-external-link"></span>
+      </a>
+      -->
+      <a class="cloud-shell-close" ng-click="ctrl.close()">
+        <span class="fa fa-times"></span>
+      </a>
+    </div>
+    <div id="shell-content">
+    </div>
+  </div>
+</div>

zun_ui/static/cloud-shell/cloud-shell.module.js

@@ -0,0 +1,37 @@
+/**
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+(function() {
+  'use strict';
+
+  /**
+   * @ngdoc overview
+   * @name horizon.cloud-shell
+   * @description
+   * cloud_shell module to host container for cloud shell.
+   */
+  angular
+    .module('horizon.cloud-shell', [
+      'horizon.cloud-shell.resizer',
+      'ngRoute'
+    ])
+    .config(config);
+
+  config.$inject = ['$provide', '$windowProvider'];
+
+  function config($provide, $windowProvider) {
+    var path = $windowProvider.$get().STATIC_URL + 'cloud-shell/';
+    $provide.constant('horizon.cloud-shell.basePath', path);
+  }
+})();

zun_ui/static/cloud-shell/cloud-shell.scss

@@ -0,0 +1,51 @@
+#cloud-shell {
+  position: fixed;
+  z-index: 10;
+  bottom: 0px;
+  width: 100%;
+  height: 200px;
+  background-color: black;
+  color: white;
+}
+#shell-header {
+  position: relative;
+  width: 100%;
+  height: 20px;
+  background-color: gray;
+  padding-left: 3px;
+}
+#shell-content {
+  height: calc(100% - 20px);
+}
+.cloud-shell-external {
+  position: relative;
+  top: 0px;
+  padding-left: 3px;
+  color: cyan;
+}
+.cloud-shell-external:hover {
+  color: red;
+}
+.cloud-shell-close {
+  position: relative;
+  top: 0px;
+  float: right;
+  padding-right: 3px;
+  color: white;
+}
+.cloud-shell-close:hover {
+  color: red;
+}
+#cloud-shell-resizer {
+  position: absolute;
+  z-index: 10;
+  bottom: 200px;
+  height: 6px;
+  width: 100%;
+  background-color: lightgray;
+  cursor: n-resize;
+}
+#cloud-shell-resize-holder {
+  width: 100%;
+  height: 100%;
+}

zun_ui/static/cloud-shell/cloud-shell.service.js

@@ -0,0 +1,56 @@
+/**
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+(function() {
+  "use strict";
+
+  angular
+    .module('horizon.cloud-shell')
+    .factory('horizon.cloud-shell.service', cloudShellService);
+
+  cloudShellService.$inject = [
+    '$rootScope',
+    '$templateRequest',
+    'horizon.cloud-shell.basePath'
+  ];
+
+  function cloudShellService(
+    $rootScope,
+    $templateRequest,
+    basePath
+  ) {
+
+    var service = {
+      init: init
+    };
+
+    return service;
+
+    function init () {
+      // remove existing cloud shell
+      angular.element(".cloud_shell").remove();
+
+      // load html for cloud shell
+      $templateRequest(basePath + 'cloud-shell.html').then(function (html) {
+        var scope = $rootScope.$new();
+        var template = angular.element(html);
+        // compile html
+        angular.element(document.body).injector().invoke(['$compile', function ($compile) {
+          $compile(template)(scope);
+          angular.element('body').append(template);
+        }]);
+      });
+    }
+  }
+})();

zun_ui/static/cloud-shell/resizer.directive.js

@@ -0,0 +1,94 @@
+/**
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License. You may obtain
+ * a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+
+(function() {
+  'use strict';
+
+  angular
+    .module('horizon.cloud-shell.resizer', [])
+    .directive('resizer', resizer);
+
+  resizer.$inject = ['$document'];
+
+  function resizer($document) {
+
+    var directive = {
+      restrict: 'E',
+      scope: {
+        direction: '@',
+        max: '@',
+        left: '@',
+        right: '@',
+        top: '@',
+        bottom: '@',
+        width: '@',
+        height: '@',
+        callback: '&'
+      },
+      link: link
+    };
+
+    return directive;
+
+    ////////////////////
+
+    function link($scope, $element) {
+      $element.on('mousedown', function(event) {
+        event.preventDefault();
+        $document.on('mousemove', mousemove);
+        $document.on('mouseup', mouseup);
+      });
+
+      function mousemove(event) {
+        if ($scope.direction === 'vertical') {
+          // Handle vertical resizer
+          var x = event.pageX;
+
+          if ($scope.max && x > $scope.max) {
+            x = parseInt($scope.max, 10);
+          }
+          $element.css({
+            left: x + 'px'
+          });
+          $($scope.left).css({
+            width: x + 'px'
+          });
+          $($scope.right).css({
+            left: (x + parseInt($scope.width, 10)) + 'px'
+          });
+        } else {
+          // Handle horizontal resizer
+          var y = window.innerHeight - event.pageY;
+          $element.css({
+            bottom: y + 'px'
+          });
+          $($scope.top).css({
+            bottom: (y + parseInt($scope.height, 10)) + 'px'
+          });
+          $($scope.bottom).css({
+            height: y + 'px'
+          });
+        }
+      }
+
+      function mouseup() {
+        $document.unbind('mousemove', mousemove);
+        $document.unbind('mouseup', mouseup);
+        if (typeof $scope.callback === "function") {
+          $scope.callback();
+        }
+      }
+    }
+  }
+})();

zun_ui/static/dashboard/container/containers/containers.scss

@@ -3,7 +3,7 @@
 }
 .console {
   margin-top: 10px;
-  height: 500px;
+  height: calc(100vh - 300px);
 }
 textarea#output {
   height: 25em;

zun_ui/static/dashboard/container/zun.service.js

@@ -43,6 +43,7 @@
       unpauseContainer: unpauseContainer,
       executeContainer: executeContainer,
       killContainer: killContainer,
+      resizeContainer: resizeContainer,
       pullImage: pullImage,
       getImages: getImages
     };
@@ -63,9 +64,12 @@
       return apiService.patch(containersPath + id, params).error(error(msg));
     }
 
-    function getContainer(id) {
+    function getContainer(id, suppressError) {
+      var promise = apiService.get(containersPath + id);
+      return suppressError ? promise : promise.error(function() {
         var msg = gettext('Unable to retrieve the Container.');
-      return apiService.get(containersPath + id).error(error(msg));
+        toastService.add('error', msg);
+      });
     }
 
     function getContainers() {
@@ -135,6 +139,11 @@
       return apiService.post(containersPath + id + '/kill', params).error(error(msg));
     }
 
+    function resizeContainer(id, params) {
+      var msg = gettext('Unable to resize console.');
+      return apiService.post(containersPath + id + '/resize', params).error(error(msg));
+    }
+
     ////////////
     // Images //
     ////////////

zun_ui/templates/cloud_shell/cloud_shell.html

@@ -0,0 +1,10 @@
+{% load i18n %}
+
+<!-- Menu Item for Extensible Header -->
+<span
+  id="cloud-shell-menu"
+  class="fa fa-terminal"
+  cloud-shell-image="{{ CLOUD_SHELL_IMAGE }}"
+  onclick="angular.element(document.body).injector().get('horizon.cloud-shell.service').init();">
+  {% trans "Cloud Shell" %}
+</span>