rdbms.vm.js 7.1 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(results.columns);
  73. $.each(results.rows, function(i, result_row) {
  74. var row = [];
  75. $.each(self.columns(), function(j, column) {
  76. row.push(result_row[column]);
  77. });
  78. rows.push(row);
  79. });
  80. self.rows(rows);
  81. };
  82. self.updateServers = function(servers) {
  83. var newServers = [];
  84. $.each(servers, function(name, nice_name) {
  85. newServers.push({
  86. 'name': ko.observable(name),
  87. 'nice_name': ko.observable(nice_name)
  88. });
  89. });
  90. self.servers(newServers);
  91. var last = $.totalStorage('hueRdbmsLastServer') || ((newServers[0].length > 0) ? newServers[0].name() : null);
  92. if (last) {
  93. self.server(last);
  94. }
  95. };
  96. self.updateDatabases = function(databases) {
  97. self.databases(databases);
  98. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  99. var last = $.totalStorage(key) || ((databases.length > 0) ? databases[0] : null);
  100. if (last) {
  101. self.database(last);
  102. }
  103. };
  104. self.updateQuery = function(design) {
  105. self.query.query(design.query);
  106. self.query.id(design.id);
  107. self.query.name(design.name);
  108. self.query.description(design.desc);
  109. self.database(design.database);
  110. self.server(design.server);
  111. };
  112. self.chooseServer = function(value, e) {
  113. $.each(self.servers(), function(index, server) {
  114. if (server.name() == value.name()) {
  115. self.selectedServer(index);
  116. }
  117. });
  118. $.totalStorage('hueRdbmsLastServer', self.server().name());
  119. self.fetchDatabases();
  120. };
  121. self.chooseDatabase = function(value, e) {
  122. var key = 'hueRdbmsLastDatabase-' + self.server().name();
  123. self.selectedDatabase(self.databases.indexOf(value));
  124. $.totalStorage(key, value);
  125. };
  126. self.explainQuery = function() {
  127. var data = ko.mapping.toJS(self.query);
  128. data.database = self.database();
  129. data.server = self.server().name();
  130. var request = {
  131. url: '/rdbms/api/explain/',
  132. dataType: 'json',
  133. type: 'POST',
  134. success: function(data) {
  135. self.query.errors.removeAll();
  136. if (data.status === 0) {
  137. $(document).trigger('explain.query', data);
  138. self.updateResults(data.results);
  139. self.query.id(data.design);
  140. self.resultsEmpty(data.results.rows.length === 0);
  141. $(document).trigger('explained.query', data);
  142. } else {
  143. self.query.errors.push(data.message);
  144. }
  145. },
  146. error: $.noop,
  147. data: data
  148. };
  149. $.ajax(request);
  150. };
  151. self.fetchQuery = function(id) {
  152. var _id = id || self.query.id();
  153. if (_id && _id != -1) {
  154. var request = {
  155. url: '/rdbms/api/query/' + _id + '/get',
  156. dataType: 'json',
  157. type: 'GET',
  158. success: function(data) {
  159. self.updateQuery(data.design);
  160. },
  161. error: $.noop
  162. };
  163. $.ajax(request);
  164. }
  165. };
  166. self.saveQuery = function() {
  167. var self = this;
  168. if (self.query.query() && self.query.name()) {
  169. var data = ko.mapping.toJS(self.query);
  170. data['desc'] = data['description'];
  171. data['server'] = self.server().name();
  172. data['database'] = self.database();
  173. var url = '/rdbms/api/query/';
  174. if (self.query.id() && self.query.id() != -1) {
  175. url += self.query.id() + '/';
  176. }
  177. var request = {
  178. url: url,
  179. dataType: 'json',
  180. type: 'POST',
  181. success: function(data) {
  182. $(document).trigger('saved.query', data);
  183. },
  184. error: function() {
  185. $(document).trigger('error.query');
  186. },
  187. data: data
  188. };
  189. $.ajax(request);
  190. }
  191. };
  192. self.executeQuery = function() {
  193. var data = ko.mapping.toJS(self.query);
  194. data.database = self.database();
  195. data.server = self.server().name();
  196. var request = {
  197. url: '/rdbms/api/execute/',
  198. dataType: 'json',
  199. type: 'POST',
  200. success: function(data) {
  201. self.query.errors.removeAll();
  202. if (data.status === 0) {
  203. $(document).trigger('execute.query', data);
  204. self.updateResults(data.results);
  205. self.query.id(data.design);
  206. self.resultsEmpty(data.results.rows.length === 0);
  207. $(document).trigger('executed.query', data);
  208. } else {
  209. self.query.errors.push(data.message);
  210. }
  211. },
  212. error: $.noop,
  213. data: data
  214. };
  215. $.ajax(request);
  216. };
  217. self.fetchServers = function() {
  218. var request = {
  219. url: '/rdbms/api/servers/',
  220. dataType: 'json',
  221. type: 'GET',
  222. success: function(data) {
  223. self.updateServers(data.servers);
  224. self.fetchDatabases();
  225. },
  226. error: $.noop
  227. };
  228. $.ajax(request);
  229. };
  230. self.fetchDatabases = function() {
  231. if (self.server()) {
  232. var request = {
  233. url: '/rdbms/api/servers/' + self.server().name() + '/databases/',
  234. dataType: 'json',
  235. type: 'GET',
  236. success: function(data) {
  237. self.updateDatabases(data.databases);
  238. },
  239. error: $.noop
  240. };
  241. $.ajax(request);
  242. }
  243. };
  244. }