entrypoint.py 9.01 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
# Copyright (c) 2016, Daniele Venzano
#
# 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.

"""
This module contains the entrypoint for the commandline Zoe client
"""

import json
import logging
import os
import sys
from argparse import ArgumentParser, Namespace, FileType, RawDescriptionHelpFormatter
from pprint import pprint

from zoe_cmd import utils
28
from zoe_lib.users import ZoeUserAPI
Daniele Venzano's avatar
Daniele Venzano committed
29
from zoe_lib.services import ZoeServiceAPI
30 31 32
from zoe_lib.exceptions import ZoeAPIException
from zoe_lib.executions import ZoeExecutionsAPI
from zoe_lib.query import ZoeQueryAPI
33
from zoe_lib.applications import app_validate, predefined_app_generate, predefined_app_list
34 35 36 37


def stats_cmd(_):
    api = ZoeQueryAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
38
    stats = api.query('stats_swarm')
39 40 41 42
    pprint(stats)


def user_new_cmd(args):
43
    api = ZoeUserAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
44 45 46 47 48 49
    name = args.name
    password = args.password
    role = args.role
    if role not in ['admin', 'user', 'guest']:
        print("Role must be one of admin, user, guest)")
        return
50
    try:
51
        api.create(name, password, role)
52 53
    except ZoeAPIException as e:
        print('Error creating user: {}'.format(e))
54 55 56


def user_get_cmd(args):
57 58
    api = ZoeUserAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
    user = api.get(args.name)
59
    if user is None:
60 61 62 63 64 65 66 67
        print('No such user')
    else:
        print('User: {}'.format(user['name']))
        print('Role: {}'.format(user['role']))
        print('Gateway URLs: {}'.format(user['gateway_urls']))


def user_delete_cmd(args):
68 69
    api = ZoeUserAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
    api.delete(args.name)
70 71 72


def user_list_cmd(_):
73 74
    api = ZoeQueryAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
    users = api.query('user')
75
    for user in users:
76
        print('<- User {} ->'.format(user['name']))
77 78 79 80 81
        print('Role: {}'.format(user['role']))
        print('Gateway URLs: {}'.format(user['gateway_urls']))


def pre_app_list_cmd(_):
82
    for a in predefined_app_list():
83 84 85 86 87
        print(a)


def pre_app_export_cmd(args):
    try:
88
        app = predefined_app_generate(args.app_name)
89
    except ZoeAPIException:
90 91 92 93 94 95 96 97
        print('Application not found')
    else:
        json.dump(app, sys.stdout, sort_keys=True, indent=4)
        print()


def app_get_cmd(args):
    api_query = ZoeQueryAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
98
    data = api_query.query('execution', name=args.name)
99
    if len(data) == 0:
100
        print("no such execution")
101
    else:
102 103
        execution = data[0]
        json.dump(execution['application'], sys.stdout, sort_keys=True, indent=4)
104 105 106 107 108 109


def exec_list_cmd(_):
    exec_api = ZoeExecutionsAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
    data = exec_api.list()
    for e in data:
110
        print('Execution {} (User: {}, ID: {}): {}'.format(e['name'], e['owner'], e['id'], e['status']))
111 112 113


def exec_start_cmd(args):
114
    app_descr = json.load(args.jsonfile)
115
    app_validate(app_descr)
116
    exec_api = ZoeExecutionsAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
117
    ret = exec_api.execution_start(args.name, app_descr)
118 119 120 121 122
    print("Application scheduled successfully with ID {}, use the exec-get command to check its status".format(ret))


def exec_get_cmd(args):
    exec_api = ZoeExecutionsAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
Daniele Venzano's avatar
Daniele Venzano committed
123
    cont_api = ZoeServiceAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
124 125 126 127 128 129
    execution = exec_api.execution_get(args.id)
    if execution is None:
        print('Execution not found')
    else:
        print('Execution {} (ID: {})'.format(execution['name'], execution['id']))
        print('Status: {}'.format(execution['status']))
130 131
        if execution['error'] is not None:
            print('Last error: {}'.format(execution['error']))
132 133 134
        print('Time started: {}'.format(execution['time_started']))
        print('Time scheduled: {}'.format(execution['time_scheduled']))
        print('Time finished: {}'.format(execution['time_finished']))
135
        app = execution['application']
136
        print('Application name: {}'.format(app['name']))
137
        for c_id in execution['services']:
138 139
            c = cont_api.get(c_id)
            ip = list(c['ip_address'].values())[0]  # FIXME how to decide which network is the right one?
140
            print('Service {} (ID: {})'.format(c['name'], c['id']))
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178
            for p in c['ports']:
                print(' - {}: {}://{}:{}{}'.format(p['name'], p['protocol'], ip, p['port_number'], p['path']))


def exec_kill_cmd(args):
    exec_api = ZoeExecutionsAPI(utils.zoe_url(), utils.zoe_user(), utils.zoe_pass())
    exec_api.terminate(args.id)


ENV_HELP_TEXT = '''To use this tool you need also to define three environment variables:
ZOE_URL: point to the URL of the Zoe Scheduler (ex.: http://localhost:5000/
ZOE_USER: the username used for authentication
ZOE_PASS: the password used for authentication'''


def process_arguments() -> Namespace:
    parser = ArgumentParser(description="Zoe command-line client", epilog=ENV_HELP_TEXT, formatter_class=RawDescriptionHelpFormatter)
    parser.add_argument('--debug', action='store_true', help='Enable debug output')

    subparser = parser.add_subparsers()

    argparser_stats = subparser.add_parser('stats', help="Show the platform statistics")
    argparser_stats.set_defaults(func=stats_cmd)

    argparser_user_new = subparser.add_parser('user-new', help="Create a new user")
    argparser_user_new.add_argument('--name', help="User name")
    argparser_user_new.add_argument('--password', help="Password")
    argparser_user_new.add_argument('--role', help="Role (one of admin, user, guest)")
    argparser_user_new.set_defaults(func=user_new_cmd)

    argparser_user_get = subparser.add_parser('user-get', help="Retrieve information about a user")
    argparser_user_get.add_argument('name', help="User name")
    argparser_user_get.set_defaults(func=user_get_cmd)

    argparser_user_delete = subparser.add_parser('user-rm', help="Removes a user from the system")
    argparser_user_delete.add_argument('name', help="User name")
    argparser_user_delete.set_defaults(func=user_delete_cmd)

179
    argparser_user_list = subparser.add_parser('user-ls', help='Lists all users defined in the system')
180 181
    argparser_user_list.set_defaults(func=user_list_cmd)

182
    argparser_pre_app_list = subparser.add_parser('pre-app-ls', help='Lists the predefined application descriptions')
183 184 185 186 187 188
    argparser_pre_app_list.set_defaults(func=pre_app_list_cmd)

    argparser_pre_app_export = subparser.add_parser('pre-app-export', help='Export one of the predefined application descriptions in JSON (stdout)')
    argparser_pre_app_export.add_argument('app_name', help='Predefined application name (use pre-app-list to see what is available')
    argparser_pre_app_export.set_defaults(func=pre_app_export_cmd)

Francesco Pace's avatar
Francesco Pace committed
189
    argparser_exec_start = subparser.add_parser('start', help="Start an application")
190
    argparser_exec_start.add_argument('name', help="Name of the execution")
191
    argparser_exec_start.add_argument('jsonfile', type=FileType("r"), help='Application description')
192 193
    argparser_exec_start.set_defaults(func=exec_start_cmd)

194 195 196
    argparser_app_list = subparser.add_parser('exec-ls', help="List all executions for the calling user")
    argparser_app_list.set_defaults(func=exec_list_cmd)

197 198 199 200
    argparser_execution_get = subparser.add_parser('exec-get', help="Get execution status")
    argparser_execution_get.add_argument('id', type=int, help="Execution id")
    argparser_execution_get.set_defaults(func=exec_get_cmd)

201 202 203
    argparser_app_get = subparser.add_parser('exec-app-get', help="Retrieve an already defined application description")
    argparser_app_get.add_argument('name', help='The name of the application')
    argparser_app_get.set_defaults(func=app_get_cmd)
204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232

    argparser_execution_kill = subparser.add_parser('terminate', help="Terminates an execution")
    argparser_execution_kill.add_argument('id', type=int, help="Execution id")
    argparser_execution_kill.set_defaults(func=exec_kill_cmd)

    return parser, parser.parse_args()


def zoe():
    parser, args = process_arguments()
    if args.debug:
        logging.basicConfig(level=logging.DEBUG)
    else:
        logging.basicConfig(level=logging.INFO)
    logging.getLogger("requests").setLevel(logging.WARNING)

    if not hasattr(args, "func"):
        parser.print_help()
        return

    if 'ZOE_URL' not in os.environ or 'ZOE_USER' not in os.environ or 'ZOE_PASS' not in os.environ:
        parser.print_help()
        return

    try:
        args.func(args)
    except ZoeAPIException as e:
        print(e.message)
    sys.exit(0)