gn/gen_persistent_log_config.py

#!/usr/bin/env python
# Copyright 2018 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import argparse
import json
import sys


def main():
    parser = argparse.ArgumentParser('Generate a sysmgr config to persist logs')
    parser.add_argument('name', help='Name of the config')
    parser.add_argument('path', help='Path to the package file')
    parser.add_argument('--tags', help='Tag to filter for', nargs='+')
    parser.add_argument('--ignore-tags', help='Tag to ignore', nargs='+')
    parser.add_argument('--file-capacity', help='max allowed disk usage',
            type=int)
    args = parser.parse_args()

    tag_args = []
    if args.tags:
        for t in args.tags:
            tag_args += [ '--tag', t ]

    ignore_tag_args = []
    if args.ignore_tags:
        for t in args.ignore_tags:
            ignore_tag_args += [ '--ignore-tag', t ]

    file_cap_args = []
    if args.file_capacity != None:
        file_cap_args = [ '--file_capacity', str(args.file_capacity) ]

    with open(args.path, 'w') as f:
        json.dump({'apps':[["fuchsia-pkg://fuchsia.com/log_listener#meta/log_listener.cmx", "--file", "/data/logs."+args.name] +
             file_cap_args + tag_args + ignore_tag_args] }, f)

    return 0


if __name__ == '__main__':
    sys.exit(main())