run_isolated.py: install CIPD packages

appengine/swarming/cipd.py

 # Copyright 2016 The LUCI Authors. All rights reserved.
 # Use of this source code is governed under the Apache License, Version 2.0
 # that can be found in the LICENSE file.
 
 """CIPD-specific code is concentrated here."""
 
 import re
 
 # Regular expressions below are copied from
 # https://chromium.googlesource.com/infra/infra/+/468bb43/appengine/chrome_infra_packages/cipd/impl.py
 # https://chromium.googlesource.com/infra/infra/+/468bb43/appengine/chrome_infra_packages/cas/impl.py
 
 PACKAGE_NAME_RE = re.compile(r'^([a-z0-9_\-]+/)*[a-z0-9_\-]+$')
 INSTANCE_ID_RE = re.compile(r'^[0-9a-f]{40}$')
 TAG_KEY_RE = re.compile(r'^[a-z0-9_\-]+$')
 REF_RE = re.compile(r'^[a-z0-9_\-]{1,100}$')
 TAG_MAX_LEN = 400
 
 
 # CIPD package name template parameters allow a user to reference different
 # packages for different enviroments. Inspired by
 # https://chromium.googlesource.com/infra/infra/+/f1072a132c68532b548458392c5444f04386d684/build/README.md
 # The values of the parameters are computed on the bot.
 #
 # Platform parameter value is "<os>-<arch>" string, where
-# os can be "linux", "mac" or "windows" and arch can be "386", "amd64" or "arm".
+# os can be "linux", "mac" or "windows" and arch can be "386", "amd64" or
+# "armv6l".
 PARAM_PLATFORM = '${platform}'
 # OS version parameter defines major and minor version of the OS distribution.
 # It is useful if package depends on .dll/.so libraries provided by the OS.
 # Example values: "ubuntu14_04", "mac10_9", "win6_1".
 PARAM_OS_VER = '${os_ver}'
 ALL_PARAMS = (PARAM_PLATFORM, PARAM_OS_VER)
 
 
 def is_valid_package_name(package_name):
   """Returns True if |package_name| is a valid CIPD package name."""
@@ skipping 21 matching lines @@
   """True if string looks like a valid package instance tag."""
   if not tag or ':' not in tag or len(tag) > TAG_MAX_LEN:
     return False
   # Care only about the key. Value can be anything (including empty string).
   return bool(TAG_KEY_RE.match(tag.split(':', 1)[0]))
 
 
 def is_pinned_version(version):
   """Returns True if |version| is pinned."""
   return bool(INSTANCE_ID_RE.match(version)) or is_valid_tag(version)