rdbms.vm.js 7.5 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. self.isExecuting(false);
  124. try {
  125. $(document).trigger('server.error', $.parseJSON(jqXHR.responseText));
  126. } catch(e) {
  127. $(document).trigger('server.unmanageable_error', jqXHR.responseText);
  128. }
  129. };
  130. self.explainQuery = function() {
  131. var data = ko.mapping.toJS(self.query);
  132. data.database = self.database();
  133. data.server = self.server().name();
  134. var request = {
  135. url: '/rdbms/api/explain/',
  136. dataType: 'json',
  137. type: 'POST',
  138. success: function(data) {
  139. self.query.errors.removeAll();
  140. if (data.status === 0) {
  141. $(document).trigger('explain.query', data);
  142. self.updateResults(data.results);
  143. self.query.id(data.design);
  144. self.resultsEmpty(data.results.rows.length === 0);
  145. $(document).trigger('explained.query', data);
  146. } else {
  147. self.query.errors.push(data.message);
  148. }
  149. },
  150. error: error_fn,
  151. data: data
  152. };
  153. $.ajax(request);
  154. };
  155. self.fetchQuery = function(id) {
  156. var _id = id || self.query.id();
  157. if (_id && _id != -1) {
  158. var request = {
  159. url: '/rdbms/api/query/' + _id + '/get',
  160. dataType: 'json',
  161. type: 'GET',
  162. success: function(data) {
  163. self.updateQuery(data.design);
  164. },
  165. error: error_fn
  166. };
  167. $.ajax(request);
  168. }
  169. };
  170. self.saveQuery = function() {
  171. var self = this;
  172. if (self.query.query() && self.query.name()) {
  173. var data = ko.mapping.toJS(self.query);
  174. data['desc'] = data['description'];
  175. data['server'] = self.server().name();
  176. data['database'] = self.database();
  177. var url = '/rdbms/api/query/';
  178. if (self.query.id() && self.query.id() != -1) {
  179. url += self.query.id() + '/';
  180. }
  181. var request = {
  182. url: url,
  183. dataType: 'json',
  184. type: 'POST',
  185. success: function(data) {
  186. $(document).trigger('saved.query', data);
  187. },
  188. error: function() {
  189. $(document).trigger('error.query');
  190. },
  191. data: data
  192. };
  193. $.ajax(request);
  194. }
  195. };
  196. self.executeQuery = function() {
  197. $(document).trigger('start_execution.query');
  198. self.isExecuting(true);
  199. var data = ko.mapping.toJS(self.query);
  200. data.database = self.database();
  201. data.server = self.server().name();
  202. var request = {
  203. url: '/rdbms/api/execute/',
  204. dataType: 'json',
  205. type: 'POST',
  206. success: function(data) {
  207. self.query.errors.removeAll();
  208. if (data.status === 0) {
  209. $(document).trigger('execute.query', data);
  210. self.updateResults(data.results);
  211. self.query.id(data.design);
  212. self.resultsEmpty(data.results.rows.length === 0);
  213. self.isExecuting(false);
  214. $(document).trigger('executed.query', data);
  215. } else {
  216. self.isExecuting(false);
  217. self.query.errors.push(data.message);
  218. }
  219. },
  220. error: error_fn,
  221. data: data
  222. };
  223. $.ajax(request);
  224. };
  225. self.fetchServers = function() {
  226. var request = {
  227. url: '/rdbms/api/servers/',
  228. dataType: 'json',
  229. type: 'GET',
  230. success: function(data) {
  231. self.updateServers(data.servers);
  232. self.fetchDatabases();
  233. },
  234. error: error_fn
  235. };
  236. $.ajax(request);
  237. };
  238. self.fetchDatabases = function() {
  239. if (self.server()) {
  240. var request = {
  241. url: '/rdbms/api/servers/' + self.server().name() + '/databases/',
  242. dataType: 'json',
  243. type: 'GET',
  244. success: function(data) {
  245. self.updateDatabases(data.databases);
  246. },
  247. error: error_fn
  248. };
  249. $.ajax(request);
  250. }
  251. };
  252. }