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# Copyright 2017 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.
from recipe_engine import recipe_api
UPLOAD_ATTEMPTS = 5
class GSUtilApi(recipe_api.RecipeApi):
def __call__(self, step_name, *args):
"""Run gsutil with the given args."""
return self.m.step(step_name, cmd=['gsutil'] + list(args))
def cp(self, name, src, dst, extra_args=None):
"""Attempt to upload or download files to/from Google Cloud Storage (GCS).
Args:
name: string. Will be used to fill out the step name.
src: string. Absolute path for a local file or gcs file (e.g. gs://...)
dst: string. Same as src.
extra_args: optional list of args to be passed to gsutil. e.g. [-Z] asks
all files be compressed with gzip after upload and before download.
If the operation fails, it will be retried multiple times.
"""
cmd = ['cp']
if extra_args:
cmd.extend(extra_args)
cmd.extend([src, dst])
name = 'upload %s' % name
for i in xrange(UPLOAD_ATTEMPTS):
step_name = name
if i > 0:
step_name += ' (attempt %d)' % (i+1)
try:
self(step_name, *cmd)
break
except self.m.step.StepFailure:
if i == UPLOAD_ATTEMPTS - 1:
raise
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