rdbms.vm.js 7.4 KB

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  1. // Licensed to Cloudera, Inc. under one
  2. // or more contributor license agreements. See the NOTICE file
  3. // distributed with this work for additional information
  4. // regarding copyright ownership. Cloudera, Inc. licenses this file
  5. // to you under the Apache License, Version 2.0 (the
  6. // "License"); you may not use this file except in compliance
  7. // with the License. You may obtain a copy of the License at
  8. //
  9. // http://www.apache.org/licenses/LICENSE-2.0
  10. //
  11. // Unless required by applicable law or agreed to in writing, software
  12. // distributed under the License is distributed on an "AS IS" BASIS,
  13. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14. // See the License for the specific language governing permissions and
  15. // limitations under the License.
  16. function RdbmsViewModel() {
  17. var self = this;
  18. self.servers = ko.observableArray();
  19. self.selectedServer = ko.observable(0);
  20. self.databases = ko.observableArray();
  21. self.selectedDatabase = ko.observable(0);
  22. self.query = ko.mapping.fromJS({
  23. 'id': -1,
  24. 'query': '',
  25. 'name': null,
  26. 'description': null,
  27. 'errors': []
  28. });
  29. self.rows = ko.observableArray();
  30. self.columns = ko.observableArray();
  31. self.resultsEmpty = ko.observable(false);
  32. self.isExecuting = ko.observable(false);
  33. self.server = ko.computed({
  34. 'read': function() {
  35. if (self.servers().length > 0) {
  36. return self.servers()[self.selectedServer()];
  37. } else{
  38. return null;
  39. }
  40. },
  41. 'write': function(value) {
  42. var filtered = $.each(self.servers(), function(index, server) {
  43. if (server.name() == value) {
  44. self.selectedServer(index);
  45. }
  46. });
  47. }
  48. });
  49. self.database = ko.computed({
  50. 'read': function() {
  51. if (self.databases()) {
  52. return self.databases()[self.selectedDatabase()];
  53. } else{
  54. return "";
  55. }
  56. },
  57. 'write': function(value) {
  58. self.selectedDatabase(self.databases.indexOf(value));
  59. }
  60. });
  61. self.getFirstDatabase = function() {
  62. if (self.databases()) {
  63. return self.databases()[0];
  64. } else {
  65. return null;
  66. }
  67. };
  68. self.getServerNiceName = function(value) {
  69. return self.servers[value];
  70. };
  71. self.updateResults = function(results) {
  72. var rows = [];
  73. self.columns.removeAll(); // Needed for datatables to refresh properly.
  74. self.columns(results.columns);
  75. self.rows.removeAll();
  76. self.rows(results.rows);
  77. };
  78. self.updateServers = function(servers) {
  79. var newServers = [];
  80. $.each(servers, function(name, nice_name) {
  81. newServers.push({
  82. 'name': ko.observable(name),
  83. 'nice_name': ko.observable(nice_name)
  84. });
  85. });
  86. self.servers(newServers);
  87. var last = $.totalStorage('hueRdbmsLastServer') || ((newServers[0].length > 0) ? newServers[0].name() : null);
  88. if (last) {
  89. self.server(last);
  90. }
  91. };
  92. self.updateDatabases = function(databases) {
  93. self.databases(databases);
  94. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  95. var last = $.totalStorage(key) || ((databases.length > 0) ? databases[0] : null);
  96. if (last) {
  97. self.database(last);
  98. }
  99. };
  100. self.updateQuery = function(design) {
  101. self.query.query(design.query);
  102. self.query.id(design.id);
  103. self.query.name(design.name);
  104. self.query.description(design.desc);
  105. self.database(design.database);
  106. self.server(design.server);
  107. };
  108. self.chooseServer = function(value, e) {
  109. $.each(self.servers(), function(index, server) {
  110. if (server.name() == value.name()) {
  111. self.selectedServer(index);
  112. }
  113. });
  114. $.totalStorage('hueRdbmsLastServer', self.server().name());
  115. self.fetchDatabases();
  116. };
  117. self.chooseDatabase = function(value, e) {
  118. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  119. self.selectedDatabase(self.databases.indexOf(value));
  120. $.totalStorage(key, value);
  121. };
  122. var error_fn = function(jqXHR, status, errorThrown) {
  123. try {
  124. $(document).trigger('server.error', $.parseJSON(jqXHR.responseText));
  125. } catch(e) {
  126. $(document).trigger('server.unmanageable_error', jqXHR.responseText);
  127. }
  128. };
  129. self.explainQuery = function() {
  130. var data = ko.mapping.toJS(self.query);
  131. data.database = self.database();
  132. data.server = self.server().name();
  133. var request = {
  134. url: '/rdbms/api/explain/',
  135. dataType: 'json',
  136. type: 'POST',
  137. success: function(data) {
  138. self.query.errors.removeAll();
  139. if (data.status === 0) {
  140. $(document).trigger('explain.query', data);
  141. self.updateResults(data.results);
  142. self.query.id(data.design);
  143. self.resultsEmpty(data.results.rows.length === 0);
  144. $(document).trigger('explained.query', data);
  145. } else {
  146. self.query.errors.push(data.message);
  147. }
  148. },
  149. error: error_fn,
  150. data: data
  151. };
  152. $.ajax(request);
  153. };
  154. self.fetchQuery = function(id) {
  155. var _id = id || self.query.id();
  156. if (_id && _id != -1) {
  157. var request = {
  158. url: '/rdbms/api/query/' + _id + '/get',
  159. dataType: 'json',
  160. type: 'GET',
  161. success: function(data) {
  162. self.updateQuery(data.design);
  163. },
  164. error: error_fn
  165. };
  166. $.ajax(request);
  167. }
  168. };
  169. self.saveQuery = function() {
  170. var self = this;
  171. if (self.query.query() && self.query.name()) {
  172. var data = ko.mapping.toJS(self.query);
  173. data['desc'] = data['description'];
  174. data['server'] = self.server().name();
  175. data['database'] = self.database();
  176. var url = '/rdbms/api/query/';
  177. if (self.query.id() && self.query.id() != -1) {
  178. url += self.query.id() + '/';
  179. }
  180. var request = {
  181. url: url,
  182. dataType: 'json',
  183. type: 'POST',
  184. success: function(data) {
  185. $(document).trigger('saved.query', data);
  186. },
  187. error: function() {
  188. $(document).trigger('error.query');
  189. },
  190. data: data
  191. };
  192. $.ajax(request);
  193. }
  194. };
  195. self.executeQuery = function() {
  196. $(document).trigger('start_execution.query');
  197. self.isExecuting(true);
  198. var data = ko.mapping.toJS(self.query);
  199. data.database = self.database();
  200. data.server = self.server().name();
  201. var request = {
  202. url: '/rdbms/api/execute/',
  203. dataType: 'json',
  204. type: 'POST',
  205. success: function(data) {
  206. self.query.errors.removeAll();
  207. if (data.status === 0) {
  208. $(document).trigger('execute.query', data);
  209. self.updateResults(data.results);
  210. self.query.id(data.design);
  211. self.resultsEmpty(data.results.rows.length === 0);
  212. self.isExecuting(false);
  213. $(document).trigger('executed.query', data);
  214. } else {
  215. self.query.errors.push(data.message);
  216. }
  217. },
  218. error: error_fn,
  219. data: data
  220. };
  221. $.ajax(request);
  222. };
  223. self.fetchServers = function() {
  224. var request = {
  225. url: '/rdbms/api/servers/',
  226. dataType: 'json',
  227. type: 'GET',
  228. success: function(data) {
  229. self.updateServers(data.servers);
  230. self.fetchDatabases();
  231. },
  232. error: error_fn
  233. };
  234. $.ajax(request);
  235. };
  236. self.fetchDatabases = function() {
  237. if (self.server()) {
  238. var request = {
  239. url: '/rdbms/api/servers/' + self.server().name() + '/databases/',
  240. dataType: 'json',
  241. type: 'GET',
  242. success: function(data) {
  243. self.updateDatabases(data.databases);
  244. },
  245. error: error_fn
  246. };
  247. $.ajax(request);
  248. }
  249. };
  250. }