cipd recipe_module

scripts/slave/recipe_modules/cipd/resources/ensure.py

+import json
+import os
+import subprocess
+import sys
+
+def execute(cmd):
+  """Runs a subprocess redirecting its stdout and stderr to the log.
+
+  Args:
+    cmd: list with command line arguments.
+
+  Returns:
+    Process exit code.
+  """
+  print('Running ' + ' '.join(cmd))
+  proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+  line = ''
+  while True:
+    buf = proc.stdout.read(1)
+    if not buf:
+      if line:
+        print(line.strip())
+      break
+    if buf == '\n':
+      print(line.strip())
+      line = ''
+    else:
+      line += buf
+  code = proc.wait()
+  if code:
+    print('Failed with exit code: %d', code)
+  return code
+
+
+def main():
+  data = json.load(sys.stdin)
+  pkg_list = data['list']
+  root = data['root']
+
+  exit_code = 0
+  # return if this client version is already installed.
+
+  exit_code = execute(["./cipd", "ensure", "--root=%s" % root, "--list=%s" % pkg_list])
+  return exit_code
+
+if __name__ == '__main__':
+  sys.exit(main())