Add isolate_android_sdk.py script and android_sdk_hash

BUG=skia:5298
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1975893002

Review-Url: https://codereview.chromium.org/1975893002

infra/bots/android_sdk.isolate

@@ -0,0 +1,7 @@
+{
+  'variables': {
+    'files': [
+      '<(ANDROID_SDK_DIR)/',
+    ],
+  },
+}

infra/bots/android_sdk_hash

@@ -0,0 +1 @@
+a27a70d73b85191b9e671ff2a44547c3f7cc15ee

infra/bots/isolate_android_sdk.py

@@ -0,0 +1,76 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+
+"""Isolate a locally-managed Android SDK."""
+
+
+import argparse
+import os
+import shlex
+import shutil
+import subprocess
+import sys
+import utils
+
+
+ISOLATE_FILE_NAME = 'android_sdk.isolate'
+REPO_SKIA = 'https://skia.googlesource.com/skia.git'
+SDK_DIR_NAME = 'android-sdk'
+
+
+def isolate_android_sdk(android_sdk_root):
+  """Isolate the Android SDK and return the isolated hash."""
+  repo_isolate_file = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                                   ISOLATE_FILE_NAME)
+  with utils.tmp_dir():
+    # Copy the SDK dir contents into a directory with a known name.
+    sdk_dir = os.path.join(os.getcwd(), SDK_DIR_NAME)
+    shutil.copytree(android_sdk_root, sdk_dir)
+    isolate_file = os.path.join(os.getcwd(), ISOLATE_FILE_NAME)
+    shutil.copyfile(repo_isolate_file, isolate_file)
+
+    # Isolate the SDK.
+    isolate = 'isolate'  # TODO(borenet): Don't assume this is in PATH.
+    android_sdk_relpath = os.path.relpath(
+        sdk_dir, os.path.dirname(isolate_file))
+    isolate_cmd = [isolate, 'archive', '--quiet',
+        '--isolate-server', 'https://isolateserver.appspot.com',
+        '-i', isolate_file,
+        '-s', 'android_sdk.isolated',
+        '--extra-variable', 'ANDROID_SDK_DIR=%s' % android_sdk_relpath]
+    isolate_out = subprocess.check_output(isolate_cmd).rstrip()
+    return shlex.split(isolate_out)[0]
+
+
+
+def update_sdk_file(skia_path, isolated_hash):
+  """Edit the android_sdk_hash file, upload a CL."""
+  with utils.chdir(skia_path):
+    with utils.git_branch():
+      hash_file = os.path.join('infra', 'bots', 'android_sdk_hash')
+      with open(hash_file, 'w') as f:
+        f.write(isolated_hash)
+      subprocess.check_call([utils.GIT, 'add', hash_file])
+      subprocess.check_call([utils.GIT, 'commit', '-m', 'Update Android SDK'])
+      subprocess.check_call([utils.GIT, 'cl', 'upload', '--bypass-hooks'])
+
+
+def main():
+  parser = argparse.ArgumentParser()
+  parser.add_argument('--android_sdk_root', required=True)
+  args = parser.parse_args()
+  skia_path = os.path.join(os.path.dirname(os.path.realpath(__file__)),
+                           os.pardir, os.pardir)
+
+  with utils.print_timings():
+    isolated_hash = isolate_android_sdk(args.android_sdk_root)
+    update_sdk_file(skia_path, isolated_hash)
+
+
+if __name__ == '__main__':
+  main()