add an asset for the Linux Android NDK.

infra/bots/assets/android_ndk_linux/create.py

 #!/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.
 
 
 """Create the asset."""
 
 
 import argparse
+import glob
+import os.path
+import shutil
 import subprocess
 
-GO_URL = "https://storage.googleapis.com/golang/go1.6.3.linux-amd64.tar.gz"
+NDK_VER = "android-ndk-r12b"
+NDK_URL = \
+    "https://dl.google.com/android/repository/%s-linux-x86_64.zip" % NDK_VER
 
 def create_asset(target_dir):
   """Create the asset."""
-  p1 = subprocess.Popen(["curl", GO_URL], stdout=subprocess.PIPE)
-  p2 = subprocess.Popen(["tar", "-C", target_dir, "-xzf" "-"], stdin=p1.stdout)
-  p1.stdout.close()  # Allow p1 to receive a SIGPIPE if p2 exits.
-  _,_ = p2.communicate()
+  subprocess.check_call(["curl", NDK_URL, "-o", "ndk.zip"])
+  subprocess.check_call(["unzip", "ndk.zip", "-d", target_dir])
+  for f in glob.glob(os.path.join(target_dir, NDK_VER, "*")):
+    shutil.move(f, target_dir)

[borenet, 2016/08/26 17:08:15]

Why not just create a temporary dir, download and unzip there, and then move the
contents?

+  subprocess.check_call(["rm", "ndk.zip"])
 
 
 def main():
   parser = argparse.ArgumentParser()
   parser.add_argument('--target_dir', '-t', required=True)
   args = parser.parse_args()
   create_asset(args.target_dir)
 
 
 if __name__ == '__main__':
   main()