Issue #267: Add script for fetching secrets from taskcluster's secrets service.

automation/taskcluster/helper/get-secret.py

@@ -0,0 +1,42 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import argparse
+import base64
+import os
+import taskcluster
+
+def write_secret_to_file(path, data, key, base64decode=False, append=False, prefix=''):
+    path = os.path.join(os.path.dirname(__file__), '../../../' + path)
+    with open(path, 'a' if append else 'w') as f:
+        value = data['secret'][key]
+        if base64decode:
+            value = base64.b64decode(value)
+        f.write(prefix + value)
+
+
+def fetch_secret_from_taskcluster(name):
+    secrets = taskcluster.Secrets({'baseUrl': 'http://taskcluster/secrets/v1'})
+    return secrets.get(name)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description='Fetch a taskcluster secret value and save it to a file.')
+
+    parser.add_argument('-s', dest="secret", action="store", help="name of the secret")
+    parser.add_argument('-k', dest='key', action="store", help='key of the secret')
+    parser.add_argument('-f', dest="path", action="store", help='file to save secret to')
+    parser.add_argument('--decode', dest="decode", action="store_true", default=False, help='base64 decode secret before saving to file')
+    parser.add_argument('--append', dest="append", action="store_true", default=False, help='append secret to existing file')
+    parser.add_argument('--prefix', dest="prefix", action="store", default="", help='add prefix when writing secret to file')
+
+    result = parser.parse_args()
+
+    secret = fetch_secret_from_taskcluster(result.secret)
+    write_secret_to_file(result.path, secret, result.key, result.decode, result.append, result.prefix)
+
+
+if __name__ == "__main__":
+    main()