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gaia/tests/taskcluster/bin/graph

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+#! /usr/bin/env node
+
+/**
+Entrypoint for the task graph extension / decisions for gaia tests.
+*/
+
+var decorate = require('../lib/decorate_task');
+var yaml = require('js-yaml');
+var fs = require('fs');
+var fsPath = require('path');
+var taskcluster = require('taskcluster-client');
+var util = require('util');
+var template = require('json-templater-fix/object');
+
+// Cache for task definitions...
+var TASK_DEFINITIONS = {};
+function loadTask(name, parameters) {
+  if (!TASK_DEFINITIONS[name]) {
+    var path = fsPath.resolve(__dirname + '/../tasks/' + name + '.yml');
+    TASK_DEFINITIONS[name] = yaml.safeLoad(fs.readFileSync(path));
+  }
+  return decorate(TASK_DEFINITIONS[name], parameters);
+}
+
+function params() {
+  return Array.prototype.slice.call(arguments).reduce(function(target, props) {
+    for (var key in props) target[key] = props[key];
+    return target;
+  }, {});
+}
+
+// List of all the possible definitions...
+var config = yaml.safeLoad(fs.readFileSync(__dirname + '/../tasks.yml'));
+
+// Map of task ids to task names.
+var taskIdMap = {};
+
+// Final task graph definition place holder...
+var graph = {
+  tasks: []
+};
+
+// XXX: When extending the task graph the scopes and metadata fields are invalid
+// according to the schema so for local testing we need the --full option so the
+// task graph can be submitted.
+if (process.argv[2] == '--full') {
+  graph.scopes = [
+    'docker-worker:cache:resources',
+
+    util.format(
+      'queue:define-task:%s/%s',
+      config.params.provisionerId, config.params.workerType
+    ),
+
+    util.format(
+      'queue:create-task:%s/%s',
+      config.params.provisionerId, config.params.workerType
+    ),
+  ];
+
+  graph.metadata = {
+    source: process.env.GITHUB_HEAD_GIT + '/blob/tests/taskcluster/bin/graph',
+    owner: 'jlal@mozilla.com', // TODO: Obviously change this...
+    description: 'Generated task graph for gaia',
+    name: 'Gaia'
+  };
+}
+
+var nextYear = new Date(Date.now());
+nextYear.setFullYear(nextYear.getFullYear() + 1);
+nextYear = nextYear.toJSON();
+
+var currentTaskId = process.env.TASK_ID;
+var currentRunId = process.env.RUN_ID;
+
+//////////////////////
+// Boostrap the graph
+//////////////////////
+taskIdMap['bootstrap'] = taskcluster.slugid();
+var packageUrl = 'https://queue.taskcluster.net/v1/task/' + currentTaskId +
+                 '/runs/' + currentRunId + '/artifacts/public/package.json';
+var bootstrapTask = loadTask('../bootstrap', params(config.params, {
+  process: process,
+  nextYear: nextYear,
+  packageUrl: packageUrl,
+  taskId: taskIdMap['bootstrap']
+}));
+bootstrapTask.taskId = taskIdMap['bootstrap'];
+graph.tasks.push(bootstrapTask);
+
+///////////////////////
+// Add dependent tasks
+///////////////////////
+
+// Expand all tasks based on the `tasks.yml` file...
+Object.keys(config.definitions).forEach(function(name) {
+  var definition = config.definitions[name];
+
+  // If we are not using chunks don't loop.
+  if (!definition || !definition.chunks) {
+    taskIdMap[name] = taskcluster.slugid();
+    var task = loadTask(name, params(config.params, {
+      // Useful for environment variables.
+      process: process,
+      // For dependencies.
+      nextYear: nextYear
+    }));
+    task.taskId = taskIdMap[name];
+    task.requires = [taskIdMap['bootstrap']];
+    graph.tasks.push(task);
+    return;
+  }
+
+  // Handle all chunking options...
+  for (var chunk = 1; chunk <= definition.chunks; chunk++) {
+    // In practice relying on chunks in the graph is probably a bad idea unless
+    // doing it explicitly with some sort of specific logic but here for
+    // consistency.
+    var taskId = taskIdMap[name + '-' + chunk] = taskcluster.slugid();
+    var task = loadTask(name, params(config.params, {
+      // Allow process to be used in variables useful for process.env.
+      process: process,
+      nextYear: nextYear,
+
+      // Chunk parameters
+      chunk: chunk,
+      totalChunks: definition.chunks
+    }));
+    task.requires = [taskIdMap['bootstrap']];
+    graph.tasks.push(task);
+  }
+});
+
+graph.tasks = graph.tasks.map(function(task) {
+  return template(task, { tasks: taskIdMap });
+});
+
+// Output the entire task graph for extension....
+process.stdout.write(JSON.stringify(graph, null, 2));