Adjust_upper_limits uses luci-go instead of swarming-client

Script is updated to use luci-go/swarming instead of swarming client
which is being deprecated.

Bug: chromium:1050450
Change-Id: I9297bd2f1387cf1b58c262ce8363e291756c7059
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2062550Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Commit-Queue: Sadrul Chowdhury <sadrul@chromium.org>
Auto-Submit: Behdad Bakhshinategh <behdadb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742846}

tools/perf/experimental/representative_perf_test_limit_adjuster/adjust_upper_limits.py

@@ -20,8 +20,7 @@ from core.external_modules import pandas
 RUNS_USED_FOR_LIMIT_UPDATE = 30
 CHANGE_PERCENTAGE_LIMIT = 0.01
 
-SWARMING_PATH = os.path.join(
-  CHROMIUM_PATH, 'tools', 'swarming_client', 'swarming.py')
+SWARMING_PATH = os.path.join(CHROMIUM_PATH, 'tools', 'luci-go', 'swarming')
 UPPER_LIMITS_DATA_DIR = os.path.join(
   CHROMIUM_PATH, 'testing', 'scripts', 'representative_perf_test_data')
 
@@ -36,16 +35,15 @@ def FetchItemIds(tags, limit):
   Returns:
     A list containing the item Id of the tasks.
   """
-  swarming_attributes = (
-    'tasks/list?tags=name:rendering_representative_perf_tests&tags=os:{os}'
-    '&tags=buildername:{buildername}&tags=master:chromium.gpu.fyi&state='
-    'COMPLETED&fields=cursor,items(task_id)').format(**tags)
 
   query = [
-    SWARMING_PATH, 'query', '-S', 'chromium-swarm.appspot.com', '--limit',
-    str(limit), swarming_attributes]
-  output = json.loads(subprocess.check_output(query))
-  return output.get('items')
+      SWARMING_PATH, 'tasks', '-S', 'chromium-swarm.appspot.com', '-limit',
+      str(limit), '-state=COMPLETED', '-field', 'items(task_id)', '-tag',
+      'master:chromium.gpu.fyi', '-tag', 'os:{os}'.format(**tags), '-tag',
+      'name:rendering_representative_perf_tests', '-tag',
+      'buildername:{buildername}'.format(**tags)
+  ]
+  return json.loads(subprocess.check_output(query))
 
 
 def FetchItemData(task_id, benchmark, index, temp_dir):
@@ -60,18 +58,17 @@ def FetchItemData(task_id, benchmark, index, temp_dir):
   Returns:
     A data_frame containing the averages and confidence interval ranges.
   """
-  output_directory = os.path.abspath(
-    os.path.join(temp_dir, task_id))
   query = [
       SWARMING_PATH, 'collect', '-S', 'chromium-swarm.appspot.com',
-    '--task-output-dir', output_directory, task_id]
+      '-output-dir', temp_dir, '-perf', task_id
+  ]
   try:
     subprocess.check_output(query)
   except Exception as e:
     print(e)
 
-  result_file_path = os.path.join(
-    output_directory, '0', 'rendering.' + benchmark, 'perf_results.csv')
+  result_file_path = os.path.join(temp_dir, task_id, 'rendering.' + benchmark,
+                                  'perf_results.csv')
 
   try:
     df = pandas.read_csv(result_file_path)