Get rid of google-internal dependencies.
Rename acloud.py->acloud_main.py to resolve import error.
diff --git a/public/acloud_main.py b/public/acloud_main.py
new file mode 100755
index 0000000..bd89929
--- /dev/null
+++ b/public/acloud_main.py
@@ -0,0 +1,355 @@
+#!/usr/bin/env python
+#
+# Copyright 2016 - The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Cloud Android Driver.
+
+This CLI manages google compute engine project for android devices.
+
+- Prerequisites:
+  See: go/acloud-manual
+
+- Configuration:
+  The script takes a required configuration file, which should look like
+     <Start of the file>
+     # If using service account
+     service_account_name: "your_account@developer.gserviceaccount.com"
+     service_account_private_key_path: "/path/to/your-project.p12"
+
+     # If using OAuth2 authentication flow
+     client_id: <client id created in the project>
+     client_secret: <client secret for the client id>
+
+     # Optional
+     ssh_private_key_path: ""
+     orientation: "portrait"
+     resolution: "800x1280x32x213"
+     network: "default"
+     machine_type: "n1-standard-1"
+     extra_data_disk_size_gb: 10  # 4G or 10G
+
+     # Required
+     project: "your-project"
+     zone: "us-central1-f"
+     storage_bucket_name: "your_google_storage_bucket_name"
+     <End of the file>
+
+  Save it at /path/to/acloud.config
+
+- Example calls:
+  - Create two instances:
+  $ acloud.par create
+    --build_target gce_x86_phone-userdebug
+    --build_id 2305447 --num 2 --config_file /path/to/acloud.config
+    --report_file /tmp/acloud_report.json --log_file /tmp/acloud.log
+
+  - Delete two instances:
+  $ acloud.par delete --instance_names
+    gce-x86-userdebug-2272605-43f9b2c6 gce-x86-userdebug-2272605-20f93a5
+    --config_file /path/to/acloud.config
+    --report_file /tmp/acloud_report.json --log_file /tmp/acloud.log
+"""
+import argparse
+import getpass
+import logging
+import os
+import sys
+
+from acloud.internal import constants
+from acloud.public import acloud_common
+from acloud.public import config
+from acloud.public import device_driver
+from acloud.public import errors
+
+LOGGING_FMT = "%(asctime)s |%(levelname)s| %(module)s:%(lineno)s| %(message)s"
+LOGGER_NAME = "acloud_main"
+
+# Commands
+CMD_CREATE = "create"
+CMD_DELETE = "delete"
+CMD_CLEANUP = "cleanup"
+CMD_SSHKEY = "sshkey"
+
+
+def _ParseArgs(args):
+    """Parse args.
+
+    Args:
+        args: Argument list passed from main.
+
+    Returns:
+        Parsed args.
+    """
+    usage = ",".join([CMD_CREATE, CMD_DELETE, CMD_CLEANUP, CMD_SSHKEY])
+    parser = argparse.ArgumentParser(
+        description=__doc__,
+        formatter_class=argparse.RawDescriptionHelpFormatter,
+        usage="%(prog)s {" + usage + "} ...")
+    subparsers = parser.add_subparsers()
+    subparser_list = []
+
+    # Command "create"
+    create_parser = subparsers.add_parser(CMD_CREATE)
+    create_parser.required = False
+    create_parser.set_defaults(which=CMD_CREATE)
+    create_parser.add_argument(
+        "--build_target",
+        type=str,
+        dest="build_target",
+        help="Android build target, e.g. gce_x86-userdebug, "
+        "or short names: phone, tablet, or tablet_mobile.")
+    create_parser.add_argument(
+        "--branch",
+        type=str,
+        dest="branch",
+        help="Android branch, e.g. mnc-dev or git_mnc-dev")
+    # TODO(fdeng): Support HEAD (the latest build)
+    create_parser.add_argument("--build_id",
+                               type=str,
+                               dest="build_id",
+                               help="Android build id, e.g. 2145099, P2804227")
+    create_parser.add_argument(
+        "--spec",
+        type=str,
+        dest="spec",
+        required=False,
+        help="The name of a pre-configured device spec that we are "
+        "going to use. Choose from: %s" % ", ".join(constants.SPEC_NAMES))
+    create_parser.add_argument("--num",
+                               type=int,
+                               dest="num",
+                               required=False,
+                               default=1,
+                               help="Number of instances to create.")
+    create_parser.add_argument(
+        "--gce_image",
+        type=str,
+        dest="gce_image",
+        required=False,
+        help="Name of an existing compute engine image to reuse.")
+    create_parser.add_argument("--local_disk_image",
+                               type=str,
+                               dest="local_disk_image",
+                               required=False,
+                               help="Path to a local disk image to use, "
+                               "e.g /tmp/avd-system.tar.gz")
+    create_parser.add_argument(
+        "--no_cleanup",
+        dest="no_cleanup",
+        default=False,
+        action="store_true",
+        help="Do not clean up temporary disk image and compute engine image. "
+        "For debugging purposes.")
+    create_parser.add_argument(
+        "--serial_log_file",
+        type=str,
+        dest="serial_log_file",
+        required=False,
+        help="Path to a *tar.gz file where serial logs will be saved "
+        "when a device fails on boot.")
+    create_parser.add_argument(
+        "--logcat_file",
+        type=str,
+        dest="logcat_file",
+        required=False,
+        help="Path to a *tar.gz file where logcat logs will be saved "
+        "when a device fails on boot.")
+
+    subparser_list.append(create_parser)
+
+    # Command "Delete"
+    delete_parser = subparsers.add_parser(CMD_DELETE)
+    delete_parser.required = False
+    delete_parser.set_defaults(which=CMD_DELETE)
+    delete_parser.add_argument(
+        "--instance_names",
+        dest="instance_names",
+        nargs="+",
+        required=True,
+        help="The names of the instances that need to delete, "
+        "separated by spaces, e.g. --instance_names instance-1 instance-2")
+    subparser_list.append(delete_parser)
+
+    # Command "cleanup"
+    cleanup_parser = subparsers.add_parser(CMD_CLEANUP)
+    cleanup_parser.required = False
+    cleanup_parser.set_defaults(which=CMD_CLEANUP)
+    cleanup_parser.add_argument(
+        "--expiration_mins",
+        type=int,
+        dest="expiration_mins",
+        required=True,
+        help="Garbage collect all gce instances, gce images, cached disk "
+        "images that are older than |expiration_mins|.")
+    subparser_list.append(cleanup_parser)
+
+    # Command "sshkey"
+    sshkey_parser = subparsers.add_parser(CMD_SSHKEY)
+    sshkey_parser.required = False
+    sshkey_parser.set_defaults(which=CMD_SSHKEY)
+    sshkey_parser.add_argument(
+        "--user",
+        type=str,
+        dest="user",
+        default=getpass.getuser(),
+        help="The user name which the sshkey belongs to, default to: %s." %
+        getpass.getuser())
+    sshkey_parser.add_argument(
+        "--ssh_rsa_path",
+        type=str,
+        dest="ssh_rsa_path",
+        required=True,
+        help="Absolute path to the file that contains the public rsa key.")
+    subparser_list.append(sshkey_parser)
+
+    # Add common arguments.
+    for p in subparser_list:
+        acloud_common.AddCommonArguments(p)
+
+    return parser.parse_args(args)
+
+
+def _TranslateAlias(parsed_args):
+    """Translate alias to Launch Control compatible values.
+
+    This method translates alias to Launch Control compatible values.
+     - branch: "git_" prefix will be added if branch name doesn't have it.
+     - build_target: For example, "phone" will be translated to full target
+                          name "git_x86_phone-userdebug",
+
+    Args:
+        parsed_args: Parsed args.
+
+    Returns:
+        Parsed args with its values being translated.
+    """
+    if parsed_args.which == CMD_CREATE:
+        if (parsed_args.branch and
+                not parsed_args.branch.startswith(constants.BRANCH_PREFIX)):
+            parsed_args.branch = constants.BRANCH_PREFIX + parsed_args.branch
+        parsed_args.build_target = constants.BUILD_TARGET_MAPPING.get(
+            parsed_args.build_target, parsed_args.build_target)
+    return parsed_args
+
+
+def _VerifyArgs(parsed_args):
+    """Verify args.
+
+    Args:
+        parsed_args: Parsed args.
+
+    Raises:
+        errors.CommandArgError: If args are invalid.
+    """
+    if parsed_args.which == CMD_CREATE:
+        if (parsed_args.spec and parsed_args.spec not in constants.SPEC_NAMES):
+            raise errors.CommandArgError(
+                "%s is not valid. Choose from: %s" %
+                (parsed_args.spec, ", ".join(constants.SPEC_NAMES)))
+        if not ((parsed_args.build_id and parsed_args.build_target) or
+                parsed_args.gce_image or parsed_args.local_disk_image):
+            raise errors.CommandArgError(
+                "At least one of the following should be specified: "
+                "--build_id and --build_target, or --gce_image, or "
+                "--local_disk_image.")
+        if bool(parsed_args.build_id) != bool(parsed_args.build_target):
+            raise errors.CommandArgError(
+                "Must specify --build_id and --build_target at the same time.")
+        if (parsed_args.serial_log_file and
+                not parsed_args.serial_log_file.endswith(".tar.gz")):
+            raise errors.CommandArgError(
+                "--serial_log_file must ends with .tar.gz")
+        if (parsed_args.logcat_file and
+                not parsed_args.logcat_file.endswith(".tar.gz")):
+            raise errors.CommandArgError(
+                "--logcat_file must ends with .tar.gz")
+
+
+def _SetupLogging(log_file, verbose, very_verbose):
+    """Setup logging.
+
+    Args:
+        log_file: path to log file.
+        verbose: If True, log at DEBUG level, otherwise log at INFO level.
+        very_verbose: If True, log at DEBUG level and turn on logging on
+                      all libraries. Take take precedence over |verbose|.
+    """
+    if very_verbose:
+        logger = logging.getLogger()
+    else:
+        logger = logging.getLogger(LOGGER_NAME)
+
+    logging_level = logging.DEBUG if verbose or very_verbose else logging.INFO
+    logger.setLevel(logging_level)
+
+    if not log_file:
+        handler = logging.StreamHandler()
+    else:
+        handler = logging.FileHandler(filename=log_file)
+    log_formatter = logging.Formatter(LOGGING_FMT)
+    handler.setFormatter(log_formatter)
+    logger.addHandler(handler)
+
+
+def main(argv):
+    """Main entry.
+
+    Args:
+        argv: A list of system arguments.
+
+    Returns:
+        0 if success. None-zero if fails.
+    """
+    args = _ParseArgs(argv)
+    _SetupLogging(args.log_file, args.verbose, args.very_verbose)
+    args = _TranslateAlias(args)
+    _VerifyArgs(args)
+
+    config_mgr = config.AcloudConfigManager(args.config_file)
+    cfg = config_mgr.Load()
+    cfg.OverrideWithArgs(args)
+
+    if args.which == CMD_CREATE:
+        report = device_driver.CreateAndroidVirtualDevices(
+            cfg,
+            args.build_target,
+            args.build_id,
+            args.num,
+            args.gce_image,
+            args.local_disk_image,
+            cleanup=not args.no_cleanup,
+            serial_log_file=args.serial_log_file,
+            logcat_file=args.logcat_file)
+    elif args.which == CMD_DELETE:
+        report = device_driver.DeleteAndroidVirtualDevices(cfg,
+                                                           args.instance_names)
+    elif args.which == CMD_CLEANUP:
+        report = device_driver.Cleanup(cfg, args.expiration_mins)
+    elif args.which == CMD_SSHKEY:
+        report = device_driver.AddSshRsa(cfg, args.user, args.ssh_rsa_path)
+    else:
+        sys.stderr.write("Invalid command %s" % args.which)
+        return 2
+
+    report.Dump(args.report_file)
+    if report.errors:
+        msg = "\n".join(report.errors)
+        sys.stderr.write("Encountered the following errors:\n%s\n" % msg)
+        return 1
+    return 0
+
+
+if __name__ == "__main__":
+    main(sys.argv[1:])