Illyoung Choi | fe121d0 | 2019-07-16 10:47:41 -0700 | [diff] [blame^] | 1 | #!/usr/bin/env python3 |
| 2 | |
| 3 | # Copyright 2019-present Open Networking Foundation |
| 4 | # |
| 5 | # Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | # you may not use this file except in compliance with the License. |
| 7 | # You may obtain a copy of the License at |
| 8 | # |
| 9 | # http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | # |
| 11 | # Unless required by applicable law or agreed to in writing, software |
| 12 | # distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | # See the License for the specific language governing permissions and |
| 15 | # limitations under the License. |
| 16 | |
| 17 | """ |
| 18 | Workflow Control CLI |
| 19 | |
| 20 | This module kickstarts Airflow workflows for requests from Workflow Controller |
| 21 | """ |
| 22 | |
| 23 | import json |
| 24 | import os.path |
| 25 | import argparse |
| 26 | |
| 27 | from multistructlog import create_logger |
| 28 | from cord_workflow_controller_client.manager import Manager |
| 29 | |
| 30 | |
| 31 | log = create_logger() |
| 32 | progargs = { |
| 33 | 'controller_url': 'http://localhost:3030', |
| 34 | 'airflow_url': 'http://localhost:8080', |
| 35 | 'airflow_username': '', |
| 36 | 'airflow_password': '', |
| 37 | 'logging': None |
| 38 | } |
| 39 | |
| 40 | DEFAULT_CONFIG_FILE_PATH = '/etc/cord_workflow_airflow_extensions/config.json' |
| 41 | |
| 42 | |
| 43 | def get_arg_parser(): |
| 44 | parser = argparse.ArgumentParser(description='CORD Workflow Control CLI.', prog='workflow_ctl') |
| 45 | parser.add_argument('--config', help='locate a configuration file') |
| 46 | parser.add_argument('--controller', help='CORD Workflow Controller URL') |
| 47 | parser.add_argument('--airflow', help='Airflow REST URL') |
| 48 | parser.add_argument('--airflow_user', help='User Name to access Airflow Web Interface') |
| 49 | parser.add_argument('--airflow_passwd', help='Password to access Airlfow Web Interface') |
| 50 | parser.add_argument('cmd', help='Command') |
| 51 | parser.add_argument('cmd_args', help='Arguments for the command', nargs='*') |
| 52 | return parser |
| 53 | |
| 54 | |
| 55 | def read_config(path): |
| 56 | if os.path.exists(path): |
| 57 | with open(path) as json_config_file: |
| 58 | data = json.load(json_config_file) |
| 59 | return data |
| 60 | return {} |
| 61 | |
| 62 | |
| 63 | def read_json_file(filename): |
| 64 | if filename: |
| 65 | with open(filename, 'r') as f: |
| 66 | return json.load(f) |
| 67 | return None |
| 68 | |
| 69 | |
| 70 | def register_workflow(args): |
| 71 | # expect args should be a list of essence files |
| 72 | if not args: |
| 73 | raise 'no essence file is given' |
| 74 | |
| 75 | log.info('Connecting to Workflow Controller (%s)...' % progargs['controller_url']) |
| 76 | manager = Manager(logger=log) |
| 77 | connected = False |
| 78 | results = [] |
| 79 | |
| 80 | try: |
| 81 | manager.connect(progargs['controller_url']) |
| 82 | connected = True |
| 83 | |
| 84 | for essence_file in args: |
| 85 | if not os.path.exists(essence_file): |
| 86 | log.error('cannot find the essence file (%s)' % essence_file) |
| 87 | continue |
| 88 | |
| 89 | essence = read_json_file(essence_file) |
| 90 | log.info('Registering an essence file (%s)...' % essence_file) |
| 91 | result = manager.register_workflow_essence(essence) |
| 92 | if result: |
| 93 | log.inof('registered an essence file (%s)' % essence_file) |
| 94 | else: |
| 95 | log.error('cannot register an essence file (%s)' % essence_file) |
| 96 | |
| 97 | results.append(result) |
| 98 | finally: |
| 99 | if connected: |
| 100 | manager.disconnect() |
| 101 | |
| 102 | return results |
| 103 | |
| 104 | |
| 105 | # for command-line execution |
| 106 | def main(args): |
| 107 | # check if config path is set |
| 108 | config_file_path = DEFAULT_CONFIG_FILE_PATH |
| 109 | if args.config: |
| 110 | config_file_path = args.config |
| 111 | |
| 112 | if os.path.exists(config_file_path): |
| 113 | # read config |
| 114 | config = read_config(config_file_path) |
| 115 | if config: |
| 116 | global progargs |
| 117 | for k in progargs: |
| 118 | # overwrite |
| 119 | progargs[k] = config[k] |
| 120 | |
| 121 | global log |
| 122 | log = create_logger(progargs["logging"]) |
| 123 | |
| 124 | if args.airflow: |
| 125 | progargs['airflow_url'] = args.airflow |
| 126 | |
| 127 | if args.controller: |
| 128 | progargs['controller_url'] = args.controller |
| 129 | |
| 130 | if args.airflow_user: |
| 131 | progargs['airflow_user'] = args.airflow_user |
| 132 | |
| 133 | if args.airflow_passwd: |
| 134 | progargs['airflow_passwd'] = args.airflow_passwd |
| 135 | |
| 136 | if args.cmd: |
| 137 | if args.cmd.strip().lower() in ['reg', 'register', 'register_workflow']: |
| 138 | results = register_workflow(args.cmd_args) |
| 139 | print(results) |
| 140 | else: |
| 141 | log.error('unknown command %s' % args.cmd) |
| 142 | raise 'unknown command %s' % args.cmd |
| 143 | |
| 144 | |
| 145 | if __name__ == "__main__": |
| 146 | parser = get_arg_parser() |
| 147 | args = parser.parse_args() |
| 148 | main(args) |