Include timestamp in nanobench JSON file name

infra/bots/recipes/swarm_perf.py

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 
 # Recipe module for Skia Swarming perf.
 
 
 DEPS = [
   'build/file',
   'core',
   'recipe_engine/json',
   'recipe_engine/path',
   'recipe_engine/platform',
   'recipe_engine/properties',
   'recipe_engine/raw_io',
+  'recipe_engine/time',
   'run',
   'flavor',
   'vars',
 ]
 
 
 TEST_BUILDERS = {
   'client.skia': {
     'skiabot-linux-swarm-000': [
       ('Perf-Android-Clang-NVIDIA_Shield-GPU-TegraX1-arm64-Debug' +
        '-GN_Android_Vulkan'),
       'Perf-Android-Clang-Nexus5-GPU-Adreno330-arm-Debug-GN_Android',
       'Perf-Android-Clang-Nexus6-GPU-Adreno420-arm-Release-GN_Android',
       'Perf-Android-Clang-Nexus7-GPU-Tegra3-arm-Release-GN_Android',
       'Perf-Android-Clang-NexusPlayer-GPU-PowerVR-x86-Release-GN_Android',
       'Perf-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release-GN',
       'Perf-Mac-Clang-MacMini6.2-GPU-HD4000-x86_64-Debug-CommandBuffer',
       'Perf-Ubuntu-Clang-GCE-CPU-AVX2-x86_64-Release-GN',
       'Perf-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-Valgrind',
       'Perf-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-VisualBench',
       'Perf-Win-MSVC-GCE-CPU-AVX2-x86_64-Debug',
       'Perf-Win-MSVC-GCE-CPU-AVX2-x86_64-Release',
       'Perf-Win8-MSVC-ShuttleB-GPU-HD4600-x86_64-Release-Trybot',
       'Perf-iOS-Clang-iPad4-GPU-SGX554-Arm7-Debug',
     ],
   },
 }
 
 
+import time
+
+
 def nanobench_flags(bot):
   args = ['--pre_log']
 
   if 'GPU' in bot:
     args.append('--images')
     args.extend(['--gpuStatsDump', 'true'])
 
   if 'Android' in bot and 'GPU' in bot:
     args.extend(['--useThermalManager', '1,1,10,1000'])
 
@@ skipping 138 matching lines @@
   skip_flag = None
   if api.vars.builder_cfg.get('cpu_or_gpu') == 'CPU':
     skip_flag = '--nogpu'
   elif api.vars.builder_cfg.get('cpu_or_gpu') == 'GPU':
     skip_flag = '--nocpu'
   if skip_flag:
     args.append(skip_flag)
   args.extend(nanobench_flags(api.vars.builder_name))
 
   if api.vars.upload_perf_results:
+    now = api.time.utcnow()
+    ts = int(time.mktime(now.utctimetuple()))
     json_path = api.flavor.device_path_join(
         api.flavor.device_dirs.perf_data_dir,
-        'nanobench_%s.json' % api.vars.got_revision)
+        'nanobench_%s_%d.json' % (api.vars.got_revision, ts))
     args.extend(['--outResultsFile', json_path])
     args.extend(properties)
 
     keys_blacklist = ['configuration', 'role', 'is_trybot']
     args.append('--key')
     for k in sorted(api.vars.builder_cfg.keys()):
       if not k in keys_blacklist:
         args.extend([k, api.vars.builder_cfg[k]])
 
   api.run(api.flavor.step, target, cmd=args,
@@ skipping 97 matching lines @@
           buildername='Perf-Ubuntu-GCC-ShuttleA-GPU-GTX550Ti-x86_64-Release-' +
                       'Valgrind-Trybot',
           mastername='client.skia',
           slavename='skiabot-linux-swarm-000',
           buildnumber=5,
           path_config='kitchen',
           swarm_out_dir='[SWARM_OUT_DIR]',
           revision='abc123',
           **gerrit_kwargs)
   )