# Copyright (c) 2010-2016 OpenStack Foundation
#
# 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.

import threading
from swiftclient import client as swift_client
from swiftclient import ClientException
from nose.plugins.attrib import attr
from storlets.tools.utils import get_member_auth
from tests.functional.python import StorletPythonFunctionalTest
import unittest


class myTestThread(threading.Thread):
    def __init__(self, url, token, test_class):
        super(myTestThread, self).__init__()
        self.token = token
        self.url = url
        self.test_class = test_class

    def run(self):
        self.test_class.invoke_storlet("print", False)


class TestTestStorlet(StorletPythonFunctionalTest):
    def setUp(self):
        self.additional_headers = {}
        super(TestTestStorlet, self).setUp(
            storlet_dir='test',
            storlet_name='test.py',
            storlet_main='test.TestStorlet',
            storlet_file=None,
            headers={})

        self.member_url, self.member_token = get_member_auth(self.conf)

        swift_client.put_object(self.url,
                                self.token,
                                self.container,
                                'test_object',
                                'some content')

    def invoke_storlet(self, op, withlog=False):
        headers = {'X-Run-Storlet': self.storlet_name}
        headers.update(self.additional_headers)
        if withlog is True:
            headers['X-Storlet-Generate-Log'] = 'True'

        params = 'op={0}&param2=val2'.format(op)
        resp_dict = dict()
        try:
            resp_headers, get_text = swift_client.get_object(
                self.url, self.token, self.container, 'test_object',
                None, None, params, resp_dict, headers)
            get_response_status = resp_dict.get('status')

        except Exception:
            get_response_status = resp_dict.get('status')
            if op == 'crash':
                self.assertTrue(get_response_status >= 500 or
                                get_response_status == 404)

        if withlog:
            resp_headers, get_text = swift_client.get_object(
                self.url, self.token, 'storletlog', 'test.log',
                None, None, None, None, headers)
            self.assertEqual(200, resp_headers.get('status'))
            self.assertEqual('aaa', get_text.read())

        if op == 'print':
            self.assertEqual(200, get_response_status)
            self.assertIn('op     print', get_text)
            self.assertIn('param2     val2', get_text)

    def test_print(self):
        self.invoke_storlet("print", False)

    def test_crash(self):
        self.invoke_storlet("crash")

    @attr('slow')
    def test_hold(self):
        self.invoke_storlet("hold")

    def invoke_storlet_in_parallel(self):
        mythreads = []

        for i in range(10):
            new_thread = myTestThread(self.url, self.token, self)
            mythreads.append(new_thread)

        for t in mythreads:
            t.start()

        for t in mythreads:
            t.join()

    @attr('slow')
    def test_parallel_print(self):
        self.invoke_storlet_in_parallel()

    def test_storlet_acl_get_fail(self):
        headers = {'X-Run-Storlet': self.storlet_name}
        headers.update(self.additional_headers)
        exc_pattern = '^.*403 Forbidden.*$'
        with self.assertRaisesRegexp(ClientException, exc_pattern):
            swift_client.get_object(self.member_url, self.member_token,
                                    self.container, 'test_object',
                                    headers=headers)

    def test_storlet_acl_get_success(self):
        headers = {'X-Run-Storlet': self.storlet_name}
        headers.update(self.additional_headers)
        exc_pattern = '^.*403 Forbidden.*$'
        with self.assertRaisesRegexp(ClientException, exc_pattern):
            swift_client.get_object(self.member_url, self.member_token,
                                    self.container, 'test_object',
                                    headers=headers)

        headers = {'X-Storlet-Container-Read': self.conf.member_user,
                   'X-Storlet-Name': self.storlet_name}
        swift_client.post_container(self.url,
                                    self.token,
                                    self.container,
                                    headers)
        swift_client.head_container(self.url,
                                    self.token,
                                    self.container)
        headers = {'X-Run-Storlet': self.storlet_name}
        headers.update(self.additional_headers)
        resp_dict = dict()
        swift_client.get_object(self.member_url,
                                self.member_token,
                                self.container, 'test_object',
                                response_dict=resp_dict,
                                headers=headers)
        self.assertEqual(200, resp_dict['status'])


class TestTestStorletOnProxy(TestTestStorlet):
    def setUp(self):
        super(TestTestStorletOnProxy, self).setUp()
        self.additional_headers = {'X-Storlet-Run-On-Proxy': ''}


if __name__ == '__main__':
    unittest.main()