mesos-framework

<!doctype html> <html lang="en"> <head> <title>Code coverage report for mesos-framework/lib/executor.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="../../prettify.css" /> <link rel="stylesheet" href="../../base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(../../sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="../../index.html">All files</a> / <a href="index.html">mesos-framework/lib</a> executor.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 12.37% Statements 12/97 </div> <div class='fl pad1y space-right2'> 0% Branches 0/45 </div> <div class='fl pad1y space-right2'> 0% Functions 0/13 </div> <div class='fl pad1y space-right2'> 12.37% Lines 12/97 </div> </div> </div> <div class='status-line low'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284</td><td class="line-coverage quiet">    1x 1x 1x 1x   1x 1x 1x                                                                                                                                                                                                                               1x         1x                                                                                                                                                                                                                   1x                                                     1x                                             1x  </td><td class="text"><pre class="prettyprint lang-js">"use strict";   var http = require("http"); var EventEmitter = require('events').EventEmitter; var util = require('util'); var uuid = require('uuid');   var helpers = require("./helpers"); var executorHandlers = require("./executorHandlers"); var mesos = require("./mesos")().getMesos();   /** * Represents a Mesos framework executor. * @constructor * @param {object} options - The option map object. */ function Executor (options) {   if (!(this instanceof Executor)) { return new Executor(options); }   // Inherit from EventEmitter EventEmitter.call(this);   var self = this; self.options = {};   // Optional env variables var envMap = { "MESOS_CHECKPOINT": "checkpointEnabled", "MESOS_EXECUTOR_SHUTDOWN_GRACE_PERIOD": "shutdownGracePeriod", "MESOS_RECOVERY_TIMEOUT": "recoveryTimeout", "MESOS_SUBSCRIPTION_BACKOFF_MAX": "subscriptionBackoffMax" };   // Check for frameworkId if (process.env.MESOS_FRAMEWORK_ID) { self.frameworkId = new mesos.FrameworkID(process.env.MESOS_FRAMEWORK_ID); } else { console.error("No MESOS_FRAMEWORK_ID environment parameter found! Exiting..."); process.exit(1); }   // Check fo rexecutorId if (process.env.MESOS_EXECUTOR_ID) { self.executorId = new mesos.ExecutorID(process.env.MESOS_EXECUTOR_ID); } else { console.error("No MESOS_EXECUTOR_ID environment parameter found! Exiting..."); process.exit(2); }   // Check for working directory if (process.env.MESOS_DIRECTORY) { self.workingDirectory = process.env.MESOS_DIRECTORY; } else { console.error("No MESOS_DIRECTORY environment parameter found! Exiting..."); process.exit(3); }   // Check for agent endpoint if (process.env.MESOS_AGENT_ENDPOINT) { var endpointArray = process.env.MESOS_AGENT_ENDPOINT.split(":"); if (endpointArray.length === 2) { self.options.agentUrl = endpointArray[0]; self.options.port = parseInt(endpointArray[1]); } else { console.error("MESOS_AGENT_ENDPOINT didn't contain a ip:port combination! Exiting..."); process.exit(4); } } else { console.log("No MESOS_AGENT_ENDPOINT environment parameter found! Using default values..."); self.options.agentUrl = options.agentUrl || "127.0.0.1"; self.options.port = parseInt(options.port) || 5051; }   // Check for other env variables and inline them Object.getOwnPropertyNames(envMap).forEach(function (envVariable) { if (process.env[envVariable]) { self[envMap[envVariable]] = process.env[envVariable]; } });   // Template for issuing Mesos Scheduler HTTP API requests self.requestTemplate = { host: self.options.agentUrl, port: self.options.port, path: "/api/v1/executor", method: "POST", headers: { 'Content-Type': 'application/json' } };   // Customer event handlers will be registered here self.customEventHandlers = {};   // List of allowed event handler function names and their argument length var allowedEventHandlers = { "SUBSCRIBED": 1, "LAUNCH": 1, "KILL": 1, "ACKNOWLEDGED": 1, "MESSAGE": 1, "ERROR": 1, "SHUTDOWN": 1 };   // Add custom event handlers if present if (options.handlers && Object.getOwnPropertyNames(options.handlers).length > 0) { Object.getOwnPropertyNames(options.handlers).forEach(function (handlerName) { // Check if name is allowed, is a function and the length of the function arguments fit to the ones defined in allowedEventHandlers if (Object.getOwnPropertyNames(allowedEventHandlers).indexOf(handlerName.toUpperCase()) > -1 && helpers.isFunction(options.handlers[handlerName]) && options.handlers[handlerName].length === allowedEventHandlers[handlerName]) { self.customEventHandlers[handlerName.toUpperCase()] = options.handlers[handlerName]; } }); }   }   // Inhertit from EventEmitter util.inherits(Executor, EventEmitter);   /** * Subscribes the framework executor to the according Mesos agent. */ Executor.prototype.subscribe = function () {   var self = this;   /** * The handler funciton for the incoming Mesos agent events for this executor. * @param {object} eventData - The data object for an incoming event. Contains the event details (type etc.). */ function handleEvent (eventData) {   try {   var event = JSON.parse(eventData);   // Determine event handler, use custom one if it exists if (self.customEventHandlers[event.type]) { // Call custom handler self.customEventHandlers[event.type].call(self, event[event.type.toLocaleLowerCase()]); } else { // Call default handler schedulerHandlers[event.type].call(self, event[event.type.toLocaleLowerCase()]); }   // Emit original objects self.emit(event.type.toLocaleLowerCase(), event[event.type.toLocaleLowerCase()]);   } catch (error) { self.emit("error", { message: "Couldn't parse as JSON: " + eventData, stack: (error.stack || "") }); }   }   var req = http.request(self.requestTemplate, function (res) {   // Set encoding to UTF8 res.setEncoding('utf8');   if (res.statusCode === 200) { self.emit("sent_subscribe", { mesosStreamId: self.mesosStreamId });   }   // Local cache for chunked JSON messages var cache = "";   // Watch for data/chunks res.on('data', function (chunk) {   console.log("BODY: " + chunk);   var expectedLength = 0;   if (chunk.indexOf("\n") > -1) { var temp = chunk.split("\n"); if (temp.length === 2) { expectedLength = parseInt(temp[0]); if (temp[1].length < expectedLength) { // Add to cache cache += temp[1]; } else { // Empty cache cache = ""; // Handle event handleEvent(temp[1]); } } else { self.emit("error", { message: "Other linebreak count found than expected! Actual count: " + temp.length }); } } else { if (cache.length > 0) { // Concatenate cached partial data with this chunk, replace the erroneous parts var eventData = cache + chunk; // Handle event handleEvent(eventData); // Empty cache cache = ""; } } });   res.on('end', function () { self.emit("error", { message: "Long-running connection was closed!" }); });   });   req.on('error', function (e) { self.emit("error", { message: "There was a problem with the request: " + e.message}); });   // write data to request body req.write(JSON.stringify({ "type": "SUBSCRIBE", "framework_id": self.frameworkId, "executor_id": self.executorId }));   req.end();   };   /** * Communicate the state of managed tasks. It is crucial that a terminal update (e.g., TASK_FINISHED, TASK_KILLED or TASK_FAILED) is sent to the agent as soon as the task terminates, in order to allow Mesos to release the resources allocated to the task. * The scheduler must explicitly respond to this call through an ACKNOWLEDGE message (see ACKNOWLEDGED in the Events section below for the semantics). The executor must maintain a list of unacknowledged updates. If for some reason, the executor is disconnected from the agent, these updates must be sent as part of SUBSCRIBE request in the unacknowledged_updates field. * @param {Object} taskStatus The {@link https://github.com/apache/mesos/blob/c6e9ce16850f69fda719d4e32be3f2a2e1d80387/include/mesos/v1/mesos.proto#L1330|TaskStatus} object containing the update details. */ Executor.prototype.update = function (taskStatus) {   var self = this;   var payload = { "type": "UPDATE", "framework_id": self.frameworkId, "executor_id": self.executorId, "update": { "status": taskStatus } };   helpers.doRequest.call(self, payload, function (error, response) { if (error) { self.emit("error", error.message); } else { self.emit("sent_update"); } }); };   /** * Send arbitrary data to the scheduler. Note that Mesos neither interprets this data nor makes any guarantees about the delivery of this message to the executor. * @param {string} data The string which's raw bytes will be encoded in Base64. */ Executor.prototype.message = function (data) {   var self = this;   var payload = { "type": "MESSAGE", "framework_id": self.frameworkId, "executor_id": self.executorId, "message": { "data": new Buffer(data).toString('base64') } };   helpers.doRequest.call(self, payload, function (error, response) { if (error) { self.emit("error", error.message); } else { self.emit("sent_message"); } });   };   module.exports = Executor;  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Sun Mar 04 2018 17:43:24 GMT+0100 (CET) </div> </div> <script src="../../prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="../../sorter.js"></script> </body> </html>