rdbms.vm.js 7.3 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.server = ko.computed({
  33. 'read': function() {
  34. if (self.servers().length > 0) {
  35. return self.servers()[self.selectedServer()];
  36. } else{
  37. return null;
  38. }
  39. },
  40. 'write': function(value) {
  41. var filtered = $.each(self.servers(), function(index, server) {
  42. if (server.name() == value) {
  43. self.selectedServer(index);
  44. }
  45. });
  46. }
  47. });
  48. self.database = ko.computed({
  49. 'read': function() {
  50. if (self.databases()) {
  51. return self.databases()[self.selectedDatabase()];
  52. } else{
  53. return "";
  54. }
  55. },
  56. 'write': function(value) {
  57. self.selectedDatabase(self.databases.indexOf(value));
  58. }
  59. });
  60. self.getFirstDatabase = function() {
  61. if (self.databases()) {
  62. return self.databases()[0];
  63. } else {
  64. return null;
  65. }
  66. };
  67. self.getServerNiceName = function(value) {
  68. return self.servers[value];
  69. };
  70. self.updateResults = function(results) {
  71. var rows = [];
  72. self.columns.removeAll(); // Needed for datatables to refresh properly.
  73. self.columns(results.columns);
  74. self.rows.removeAll();
  75. self.rows(results.rows);
  76. };
  77. self.updateServers = function(servers) {
  78. var newServers = [];
  79. $.each(servers, function(name, nice_name) {
  80. newServers.push({
  81. 'name': ko.observable(name),
  82. 'nice_name': ko.observable(nice_name)
  83. });
  84. });
  85. self.servers(newServers);
  86. var last = $.totalStorage('hueRdbmsLastServer') || ((newServers[0].length > 0) ? newServers[0].name() : null);
  87. if (last) {
  88. self.server(last);
  89. }
  90. };
  91. self.updateDatabases = function(databases) {
  92. self.databases(databases);
  93. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  94. var last = $.totalStorage(key) || ((databases.length > 0) ? databases[0] : null);
  95. if (last) {
  96. self.database(last);
  97. }
  98. };
  99. self.updateQuery = function(design) {
  100. self.query.query(design.query);
  101. self.query.id(design.id);
  102. self.query.name(design.name);
  103. self.query.description(design.desc);
  104. self.database(design.database);
  105. self.server(design.server);
  106. };
  107. self.chooseServer = function(value, e) {
  108. $.each(self.servers(), function(index, server) {
  109. if (server.name() == value.name()) {
  110. self.selectedServer(index);
  111. }
  112. });
  113. $.totalStorage('hueRdbmsLastServer', self.server().name());
  114. self.fetchDatabases();
  115. };
  116. self.chooseDatabase = function(value, e) {
  117. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  118. self.selectedDatabase(self.databases.indexOf(value));
  119. $.totalStorage(key, value);
  120. };
  121. var error_fn = function(jqXHR, status, errorThrown) {
  122. try {
  123. $(document).trigger('server.error', $.parseJSON(jqXHR.responseText));
  124. } catch(e) {
  125. $(document).trigger('server.unmanageable_error', jqXHR.responseText);
  126. }
  127. };
  128. self.explainQuery = function() {
  129. var data = ko.mapping.toJS(self.query);
  130. data.database = self.database();
  131. data.server = self.server().name();
  132. var request = {
  133. url: '/rdbms/api/explain/',
  134. dataType: 'json',
  135. type: 'POST',
  136. success: function(data) {
  137. self.query.errors.removeAll();
  138. if (data.status === 0) {
  139. $(document).trigger('explain.query', data);
  140. self.updateResults(data.results);
  141. self.query.id(data.design);
  142. self.resultsEmpty(data.results.rows.length === 0);
  143. $(document).trigger('explained.query', data);
  144. } else {
  145. self.query.errors.push(data.message);
  146. }
  147. },
  148. error: error_fn,
  149. data: data
  150. };
  151. $.ajax(request);
  152. };
  153. self.fetchQuery = function(id) {
  154. var _id = id || self.query.id();
  155. if (_id && _id != -1) {
  156. var request = {
  157. url: '/rdbms/api/query/' + _id + '/get',
  158. dataType: 'json',
  159. type: 'GET',
  160. success: function(data) {
  161. self.updateQuery(data.design);
  162. },
  163. error: error_fn
  164. };
  165. $.ajax(request);
  166. }
  167. };
  168. self.saveQuery = function() {
  169. var self = this;
  170. if (self.query.query() && self.query.name()) {
  171. var data = ko.mapping.toJS(self.query);
  172. data['desc'] = data['description'];
  173. data['server'] = self.server().name();
  174. data['database'] = self.database();
  175. var url = '/rdbms/api/query/';
  176. if (self.query.id() && self.query.id() != -1) {
  177. url += self.query.id() + '/';
  178. }
  179. var request = {
  180. url: url,
  181. dataType: 'json',
  182. type: 'POST',
  183. success: function(data) {
  184. $(document).trigger('saved.query', data);
  185. },
  186. error: function() {
  187. $(document).trigger('error.query');
  188. },
  189. data: data
  190. };
  191. $.ajax(request);
  192. }
  193. };
  194. self.executeQuery = function() {
  195. var data = ko.mapping.toJS(self.query);
  196. data.database = self.database();
  197. data.server = self.server().name();
  198. var request = {
  199. url: '/rdbms/api/execute/',
  200. dataType: 'json',
  201. type: 'POST',
  202. success: function(data) {
  203. self.query.errors.removeAll();
  204. if (data.status === 0) {
  205. $(document).trigger('execute.query', data);
  206. self.updateResults(data.results);
  207. self.query.id(data.design);
  208. self.resultsEmpty(data.results.rows.length === 0);
  209. $(document).trigger('executed.query', data);
  210. } else {
  211. self.query.errors.push(data.message);
  212. }
  213. },
  214. error: error_fn,
  215. data: data
  216. };
  217. $.ajax(request);
  218. };
  219. self.fetchServers = function() {
  220. var request = {
  221. url: '/rdbms/api/servers/',
  222. dataType: 'json',
  223. type: 'GET',
  224. success: function(data) {
  225. self.updateServers(data.servers);
  226. self.fetchDatabases();
  227. },
  228. error: error_fn
  229. };
  230. $.ajax(request);
  231. };
  232. self.fetchDatabases = function() {
  233. if (self.server()) {
  234. var request = {
  235. url: '/rdbms/api/servers/' + self.server().name() + '/databases/',
  236. dataType: 'json',
  237. type: 'GET',
  238. success: function(data) {
  239. self.updateDatabases(data.databases);
  240. },
  241. error: error_fn
  242. };
  243. $.ajax(request);
  244. }
  245. };
  246. }