Bug 1288028 - Reduce latency of runnable jobs API

The runnable jobs API now fetches runnable-jobs.json if available and fallsback to
full-task-graph.json.

The new file is less than a tenth of the original file and contains the minimum
amount of data required for the endpoint.

Drop support for full-task-graph.json and 'job_type_description'.

tests/etl/test_runnable_jobs.py

@@ -1,7 +1,7 @@
 import responses
 
 from treeherder.config.settings import (TASKCLUSTER_INDEX_URL,
-                                        TASKCLUSTER_TASKGRAPH_URL)
+                                        TASKCLUSTER_RUNNABLE_JOBS_URL)
 from treeherder.etl.buildbot import get_symbols_and_platforms
 from treeherder.etl.runnable_jobs import (RunnableJobsProcess,
                                           _taskcluster_runnable_jobs)
@@ -11,9 +11,35 @@ from treeherder.model.models import (BuildPlatform,
                                      Repository,
                                      RunnableJob)
 
+TASK_ID = 'AFq3FRt4TyiTwIN7fUqOQg'
+CONTENT1 = {'taskId': TASK_ID}
+RUNNABLE_JOBS_URL = TASKCLUSTER_RUNNABLE_JOBS_URL.format(task_id=TASK_ID)
+JOB_NAME = 'job name'
+API_RETURN = {
+    'build_platform': 'plaform name',
+    'build_system_type': 'taskcluster',
+    'job_group_name': 'Group Name',
+    'job_group_symbol': 'GRP',
+    'job_type_name': JOB_NAME,
+    'job_type_symbol': 'sym',
+    'platform': 'plaform name',
+    'platform_option': 'opt',
+    'ref_data_name': JOB_NAME,
+    'state': 'runnable',
+    'result': 'runnable'
+}
+RUNNABLE_JOBS_CONTENTS = {
+    JOB_NAME: {
+        'collection':  {'opt': True},
+        'groupName': API_RETURN['job_group_name'],
+        'groupSymbol': API_RETURN['job_group_symbol'],
+        'platform': API_RETURN['platform'],
+        'symbol': API_RETURN['job_type_symbol'],
+    }
+}
+
 
 def test_prune_old_runnable_job(test_repository, eleven_jobs_stored):
-
     """
     Test that a defunct buildername will be pruned
     """
@@ -38,63 +64,18 @@ def test_prune_old_runnable_job(test_repository, eleven_jobs_stored):
 
 @responses.activate
 def test_taskcluster_runnable_jobs(test_repository):
-
     """
     Test getting runnable jobs without providing decision task id
     """
     repo = test_repository.name
-    task_id = 'AFq3FRt4TyiTwIN7fUqOQg'
-    tc_index_url = TASKCLUSTER_INDEX_URL % repo
-    tc_graph_url = TASKCLUSTER_TASKGRAPH_URL.format(task_id=task_id)
-    platform = 'plaform name'
-    grp_symbol = 'GRP'
-    grp_name = 'Group Name'
-    symbol = 'sym'
-    collection = {'opt': True}
-    name = 'job name'
-    description = 'job description'
-
-    content1 = {
-        'taskId': task_id
-    }
-
-    content2 = {
-        'node': {
-            'task': {
-                'extra': {
-                    'treeherder': {
-                        'groupSymbol': grp_symbol,
-                        'groupName': grp_name,
-                        'symbol': symbol,
-                        'machine': {
-                            'platform': platform
-                        },
-                        'collection':  collection
-                    }
-                },
-                'metadata': {
-                    'name': name,
-                    'description': description
-                }
-            }
-        }
-    }
-
-    responses.add(responses.GET, tc_index_url, json=content1, match_querystring=True, status=200)
-    responses.add(responses.GET, tc_graph_url, json=content2, match_querystring=True, status=200)
 
+    responses.add(responses.GET, TASKCLUSTER_INDEX_URL % repo,
+                  json=CONTENT1, match_querystring=True, status=200)
+    responses.add(responses.GET, RUNNABLE_JOBS_URL,
+                  json=RUNNABLE_JOBS_CONTENTS, match_querystring=True, status=200)
     jobs_ret = _taskcluster_runnable_jobs(repo, None)
 
     assert len(jobs_ret) == 1
     test_job = jobs_ret[0]
 
-    assert test_job['build_platform'] == platform
-    assert test_job['build_system_type'] == 'taskcluster'
-    assert test_job['job_group_name'] == grp_name
-    assert test_job['job_group_symbol'] == grp_symbol
-    assert test_job['job_type_name'] == name
-    assert test_job['job_type_description'] == description
-    assert test_job['job_type_symbol'] == symbol
-    assert test_job['platform'] == platform
-    assert test_job['state'] == 'runnable'
-    assert test_job['result'] == 'runnable'
+    assert test_job == API_RETURN

treeherder/config/settings.py

@@ -416,8 +416,8 @@ BUILDAPI_PENDING_URL = "https://secure.pub.build.mozilla.org/builddata/buildjson
 BUILDAPI_RUNNING_URL = "https://secure.pub.build.mozilla.org/builddata/buildjson/builds-running.js"
 BUILDAPI_BUILDS4H_URL = "https://secure.pub.build.mozilla.org/builddata/buildjson/builds-4hr.js.gz"
 ALLTHETHINGS_URL = "https://secure.pub.build.mozilla.org/builddata/reports/allthethings.json"
-TASKCLUSTER_TASKGRAPH_URL = 'https://public-artifacts.taskcluster.net/{task_id}/0/public/full-task-graph.json'
 TASKCLUSTER_INDEX_URL = 'https://index.taskcluster.net/v1/task/gecko.v2.%s.latest.firefox.decision'
+TASKCLUSTER_RUNNABLE_JOBS_URL = 'https://public-artifacts.taskcluster.net/{task_id}/0/public/runnable-jobs.json.gz'
 
 # the amount of time we cache bug suggestion lookups (to speed up loading the bug
 # suggestions or autoclassify panels for recently finished jobs)

treeherder/etl/runnable_jobs.py

@@ -127,7 +127,7 @@ def _taskcluster_runnable_jobs(project, decision_task_id):
     if not decision_task_id:
         return ret
 
-    tc_graph_url = settings.TASKCLUSTER_TASKGRAPH_URL.format(task_id=decision_task_id)
+    tc_graph_url = settings.TASKCLUSTER_RUNNABLE_JOBS_URL.format(task_id=decision_task_id)
     validate = URLValidator()
     try:
         validate(tc_graph_url)
@@ -141,26 +141,15 @@ def _taskcluster_runnable_jobs(project, decision_task_id):
         return []
 
     for label, node in tc_graph.iteritems():
-        if not ('extra' in node['task'] and 'treeherder' in node['task']['extra']):
-            # some tasks don't have the treeherder information we need
-            # to be able to display them (and are not intended to be
-            # displayed). skip.
-            continue
-
-        treeherder_options = node['task']['extra']['treeherder']
-        task_metadata = node['task']['metadata']
-        platform_option = ' '.join(treeherder_options.get('collection', {}).keys())
-
         ret.append({
-            'build_platform': treeherder_options.get('machine', {}).get('platform', ''),
+            'build_platform': node.get('platform', ''),
             'build_system_type': 'taskcluster',
-            'job_group_name': treeherder_options.get('groupName', ''),
-            'job_group_symbol': treeherder_options.get('groupSymbol', ''),
-            'job_type_description': task_metadata['description'],
-            'job_type_name': task_metadata['name'],
-            'job_type_symbol': treeherder_options['symbol'],
-            'platform': treeherder_options.get('machine', {}).get('platform', ''),
-            'platform_option': platform_option,
+            'job_group_name': node.get('groupName', ''),
+            'job_group_symbol': node.get('groupSymbol', ''),
+            'job_type_name': label,
+            'job_type_symbol': node['symbol'],
+            'platform': node.get('platform'),
+            'platform_option': ' '.join(node.get('collection', {}).keys()),
             'ref_data_name': label,
             'state': 'runnable',
             'result': 'runnable',