# Copyright (c) 2013 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 contextlib
import os
import shutil
import StringIO
import tempfile
import unittest

import eventlet
import mock

from swift.common import constraints
from swift.common import exceptions
from swift.common import swob
from swift.common import utils
from swift.obj import diskfile
from swift.obj import server
from swift.obj import ssync_receiver

from test import unit


class TestReceiver(unittest.TestCase):

    def setUp(self):
        utils.HASH_PATH_SUFFIX = 'endcap'
        utils.HASH_PATH_PREFIX = 'startcap'
        # Not sure why the test.unit stuff isn't taking effect here; so I'm
        # reenforcing it.
        diskfile.getxattr = unit._getxattr
        diskfile.setxattr = unit._setxattr
        self.testdir = os.path.join(
            tempfile.mkdtemp(), 'tmp_test_ssync_receiver')
        utils.mkdirs(os.path.join(self.testdir, 'sda1', 'tmp'))
        conf = {
            'devices': self.testdir,
            'mount_check': 'false',
            'replication_one_per_device': 'false',
            'log_requests': 'false'}
        self.controller = server.ObjectController(conf)
        self.controller.bytes_per_sync = 1

        self.account1 = 'a'
        self.container1 = 'c'
        self.object1 = 'o1'
        self.name1 = '/' + '/'.join((
            self.account1, self.container1, self.object1))
        self.hash1 = utils.hash_path(
            self.account1, self.container1, self.object1)
        self.ts1 = '1372800001.00000'
        self.metadata1 = {
            'name': self.name1,
            'X-Timestamp': self.ts1,
            'Content-Length': '0'}

        self.account2 = 'a'
        self.container2 = 'c'
        self.object2 = 'o2'
        self.name2 = '/' + '/'.join((
            self.account2, self.container2, self.object2))
        self.hash2 = utils.hash_path(
            self.account2, self.container2, self.object2)
        self.ts2 = '1372800002.00000'
        self.metadata2 = {
            'name': self.name2,
            'X-Timestamp': self.ts2,
            'Content-Length': '0'}

    def tearDown(self):
        shutil.rmtree(os.path.dirname(self.testdir))

    def body_lines(self, body):
        lines = []
        for line in body.split('\n'):
            line = line.strip()
            if line:
                lines.append(line)
        return lines

    def test_REPLICATION_semaphore_locked(self):
        with mock.patch.object(
                self.controller, 'replication_semaphore') as \
                mocked_replication_semaphore:
            self.controller.logger = mock.MagicMock()
            mocked_replication_semaphore.acquire.return_value = False
            req = swob.Request.blank(
                '/device/partition', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 503 '<html><h1>Service Unavailable</h1><p>The "
                 "server is currently unavailable. Please try again at a "
                 "later time.</p></html>'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.error.called)
            self.assertFalse(self.controller.logger.exception.called)

    def test_REPLICATION_calls_replication_lock(self):
        with mock.patch.object(
                self.controller._diskfile_mgr, 'replication_lock') as \
                mocked_replication_lock:
            req = swob.Request.blank(
                '/sda1/1',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n'
                     ':MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n:UPDATES: END\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':UPDATES: START', ':UPDATES: END'])
            self.assertEqual(resp.status_int, 200)
            mocked_replication_lock.assert_called_once_with('sda1')

    def test_REPLICATION_replication_lock_fail(self):
        def _mock(path):
            with exceptions.ReplicationLockTimeout(0.01, '/somewhere/' + path):
                eventlet.sleep(0.05)
        with mock.patch.object(
                self.controller._diskfile_mgr, 'replication_lock', _mock):
            self.controller._diskfile_mgr
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/sda1/1',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n'
                     ':MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n:UPDATES: END\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 0 '0.01 seconds: /somewhere/sda1'"])
            self.controller.logger.debug.assert_called_once_with(
                'None/sda1/1 REPLICATION LOCK TIMEOUT: 0.01 seconds: '
                '/somewhere/sda1')

    def test_REPLICATION_initial_path(self):
        with mock.patch.object(
                self.controller, 'replication_semaphore') as \
                mocked_replication_semaphore:
            req = swob.Request.blank(
                '/device', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 0 'Invalid path: /device'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(mocked_replication_semaphore.acquire.called)
            self.assertFalse(mocked_replication_semaphore.release.called)

        with mock.patch.object(
                self.controller, 'replication_semaphore') as \
                mocked_replication_semaphore:
            req = swob.Request.blank(
                '/device/', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 0 'Invalid path: /device/'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(mocked_replication_semaphore.acquire.called)
            self.assertFalse(mocked_replication_semaphore.release.called)

        with mock.patch.object(
                self.controller, 'replication_semaphore') as \
                mocked_replication_semaphore:
            req = swob.Request.blank(
                '/device/partition', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':ERROR: 0 "Looking for :MISSING_CHECK: START got \'\'"'])
            self.assertEqual(resp.status_int, 200)
            mocked_replication_semaphore.acquire.assert_called_once_with(0)
            mocked_replication_semaphore.release.assert_called_once_with()

        with mock.patch.object(
                self.controller, 'replication_semaphore') as \
                mocked_replication_semaphore:
            req = swob.Request.blank(
                '/device/partition/junk',
                environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 0 'Invalid path: /device/partition/junk'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(mocked_replication_semaphore.acquire.called)
            self.assertFalse(mocked_replication_semaphore.release.called)

    def test_REPLICATION_mount_check(self):
        with contextlib.nested(
                mock.patch.object(
                    self.controller, 'replication_semaphore'),
                mock.patch.object(
                    self.controller._diskfile_mgr, 'mount_check', False),
                mock.patch.object(
                    constraints, 'check_mount', return_value=False)) as (
                mocked_replication_semaphore,
                mocked_mount_check,
                mocked_check_mount):
            req = swob.Request.blank(
                '/device/partition', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':ERROR: 0 "Looking for :MISSING_CHECK: START got \'\'"'])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(mocked_check_mount.called)

        with contextlib.nested(
                mock.patch.object(
                    self.controller, 'replication_semaphore'),
                mock.patch.object(
                    self.controller._diskfile_mgr, 'mount_check', True),
                mock.patch.object(
                    constraints, 'check_mount', return_value=False)) as (
                mocked_replication_semaphore,
                mocked_mount_check,
                mocked_check_mount):
            req = swob.Request.blank(
                '/device/partition', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 507 '<html><h1>Insufficient Storage</h1><p>There "
                 "was not enough space to save the resource. Drive: "
                 "device</p></html>'"])
            self.assertEqual(resp.status_int, 200)
            mocked_check_mount.assert_called_once_with(
                self.controller._diskfile_mgr.devices, 'device')

            mocked_check_mount.reset_mock()
            mocked_check_mount.return_value = True
            req = swob.Request.blank(
                '/device/partition', environ={'REQUEST_METHOD': 'REPLICATION'})
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':ERROR: 0 "Looking for :MISSING_CHECK: START got \'\'"'])
            self.assertEqual(resp.status_int, 200)
            mocked_check_mount.assert_called_once_with(
                self.controller._diskfile_mgr.devices, 'device')

    def test_REPLICATION_Exception(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def get_socket(self):
                return self.mock_socket

        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\nBad content is here')
            req.remote_addr = '1.2.3.4'
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'Got no headers for Bad content is here'"])
            self.assertEqual(resp.status_int, 200)
            mock_shutdown_safe.assert_called_once_with(
                mock_wsgi_input.mock_socket)
            mock_wsgi_input.mock_socket.close.assert_called_once_with()
            self.controller.logger.exception.assert_called_once_with(
                '1.2.3.4/device/partition EXCEPTION in replication.Receiver')

    def test_REPLICATION_Exception_Exception(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def get_socket(self):
                return self.mock_socket

        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\nBad content is here')
            req.remote_addr = mock.MagicMock()
            req.remote_addr.__str__ = mock.Mock(
                side_effect=Exception("can't stringify this"))
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END'])
            self.assertEqual(resp.status_int, 200)
            mock_shutdown_safe.assert_called_once_with(
                mock_wsgi_input.mock_socket)
            mock_wsgi_input.mock_socket.close.assert_called_once_with()
            self.controller.logger.exception.assert_called_once_with(
                'EXCEPTION in replication.Receiver')

    def test_MISSING_CHECK_timeout(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def readline(self, sizehint=-1):
                line = StringIO.StringIO.readline(self)
                if line.startswith('hash'):
                    eventlet.sleep(0.1)
                return line

            def get_socket(self):
                return self.mock_socket

        self.controller.client_timeout = 0.01
        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/sda1/1',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n'
                     'hash ts\r\n'
                     ':MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n:UPDATES: END\r\n')
            req.remote_addr = '2.3.4.5'
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 408 '0.01 seconds: missing_check line'"])
            self.assertEqual(resp.status_int, 200)
            self.assertTrue(mock_shutdown_safe.called)
            self.controller.logger.error.assert_called_once_with(
                '2.3.4.5/sda1/1 TIMEOUT in replication.Receiver: '
                '0.01 seconds: missing_check line')

    def test_MISSING_CHECK_other_exception(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def readline(self, sizehint=-1):
                line = StringIO.StringIO.readline(self)
                if line.startswith('hash'):
                    raise Exception('test exception')
                return line

            def get_socket(self):
                return self.mock_socket

        self.controller.client_timeout = 0.01
        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/sda1/1',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n'
                     'hash ts\r\n'
                     ':MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n:UPDATES: END\r\n')
            req.remote_addr = '3.4.5.6'
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [":ERROR: 0 'test exception'"])
            self.assertEqual(resp.status_int, 200)
            self.assertTrue(mock_shutdown_safe.called)
            self.controller.logger.exception.assert_called_once_with(
                '3.4.5.6/sda1/1 EXCEPTION in replication.Receiver')

    def test_MISSING_CHECK_empty_list(self):

        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/sda1/1',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n'
                 ':MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n:UPDATES: END\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START', ':MISSING_CHECK: END',
             ':UPDATES: START', ':UPDATES: END'])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.error.called)
        self.assertFalse(self.controller.logger.exception.called)

    def test_MISSING_CHECK_have_none(self):

        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/sda1/1',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n' +
                 self.hash1 + ' ' + self.ts1 + '\r\n' +
                 self.hash2 + ' ' + self.ts2 + '\r\n'
                 ':MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n:UPDATES: END\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START',
             self.hash1,
             self.hash2,
             ':MISSING_CHECK: END',
             ':UPDATES: START', ':UPDATES: END'])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.error.called)
        self.assertFalse(self.controller.logger.exception.called)

    def test_MISSING_CHECK_have_one_exact(self):
        object_dir = utils.storage_directory(
            os.path.join(self.testdir, 'sda1', diskfile.DATADIR),
            '1', self.hash1)
        utils.mkdirs(object_dir)
        fp = open(os.path.join(object_dir, self.ts1 + '.data'), 'w+')
        fp.write('1')
        fp.flush()
        self.metadata1['Content-Length'] = '1'
        diskfile.write_metadata(fp, self.metadata1)

        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/sda1/1',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n' +
                 self.hash1 + ' ' + self.ts1 + '\r\n' +
                 self.hash2 + ' ' + self.ts2 + '\r\n'
                 ':MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n:UPDATES: END\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START',
             self.hash2,
             ':MISSING_CHECK: END',
             ':UPDATES: START', ':UPDATES: END'])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.error.called)
        self.assertFalse(self.controller.logger.exception.called)

    def test_MISSING_CHECK_have_one_newer(self):
        object_dir = utils.storage_directory(
            os.path.join(self.testdir, 'sda1', diskfile.DATADIR),
            '1', self.hash1)
        utils.mkdirs(object_dir)
        newer_ts1 = utils.normalize_timestamp(float(self.ts1) + 1)
        self.metadata1['X-Timestamp'] = newer_ts1
        fp = open(os.path.join(object_dir, newer_ts1 + '.data'), 'w+')
        fp.write('1')
        fp.flush()
        self.metadata1['Content-Length'] = '1'
        diskfile.write_metadata(fp, self.metadata1)

        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/sda1/1',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n' +
                 self.hash1 + ' ' + self.ts1 + '\r\n' +
                 self.hash2 + ' ' + self.ts2 + '\r\n'
                 ':MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n:UPDATES: END\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START',
             self.hash2,
             ':MISSING_CHECK: END',
             ':UPDATES: START', ':UPDATES: END'])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.error.called)
        self.assertFalse(self.controller.logger.exception.called)

    def test_MISSING_CHECK_have_one_older(self):
        object_dir = utils.storage_directory(
            os.path.join(self.testdir, 'sda1', diskfile.DATADIR),
            '1', self.hash1)
        utils.mkdirs(object_dir)
        older_ts1 = utils.normalize_timestamp(float(self.ts1) - 1)
        self.metadata1['X-Timestamp'] = older_ts1
        fp = open(os.path.join(object_dir, older_ts1 + '.data'), 'w+')
        fp.write('1')
        fp.flush()
        self.metadata1['Content-Length'] = '1'
        diskfile.write_metadata(fp, self.metadata1)

        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/sda1/1',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n' +
                 self.hash1 + ' ' + self.ts1 + '\r\n' +
                 self.hash2 + ' ' + self.ts2 + '\r\n'
                 ':MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n:UPDATES: END\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START',
             self.hash1,
             self.hash2,
             ':MISSING_CHECK: END',
             ':UPDATES: START', ':UPDATES: END'])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.error.called)
        self.assertFalse(self.controller.logger.exception.called)

    def test_UPDATES_timeout(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def readline(self, sizehint=-1):
                line = StringIO.StringIO.readline(self)
                if line.startswith('DELETE'):
                    eventlet.sleep(0.1)
                return line

            def get_socket(self):
                return self.mock_socket

        self.controller.client_timeout = 0.01
        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'X-Timestamp: 1364456113.76334\r\n'
                     '\r\n'
                     ':UPDATES: END\r\n')
            req.remote_addr = '2.3.4.5'
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 408 '0.01 seconds: updates line'"])
            self.assertEqual(resp.status_int, 200)
            mock_shutdown_safe.assert_called_once_with(
                mock_wsgi_input.mock_socket)
            mock_wsgi_input.mock_socket.close.assert_called_once_with()
            self.controller.logger.error.assert_called_once_with(
                '2.3.4.5/device/partition TIMEOUT in replication.Receiver: '
                '0.01 seconds: updates line')

    def test_UPDATES_other_exception(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def readline(self, sizehint=-1):
                line = StringIO.StringIO.readline(self)
                if line.startswith('DELETE'):
                    raise Exception('test exception')
                return line

            def get_socket(self):
                return self.mock_socket

        self.controller.client_timeout = 0.01
        with mock.patch.object(
                ssync_receiver.eventlet.greenio, 'shutdown_safe') as \
                mock_shutdown_safe:
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'X-Timestamp: 1364456113.76334\r\n'
                     '\r\n'
                     ':UPDATES: END\r\n')
            req.remote_addr = '3.4.5.6'
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'test exception'"])
            self.assertEqual(resp.status_int, 200)
            mock_shutdown_safe.assert_called_once_with(
                mock_wsgi_input.mock_socket)
            mock_wsgi_input.mock_socket.close.assert_called_once_with()
            self.controller.logger.exception.assert_called_once_with(
                '3.4.5.6/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_no_problems_no_hard_disconnect(self):

        class _Wrapper(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)
                self.mock_socket = mock.MagicMock()

            def get_socket(self):
                return self.mock_socket

        self.controller.client_timeout = 0.01
        with contextlib.nested(
                mock.patch.object(
                    ssync_receiver.eventlet.greenio, 'shutdown_safe'),
                mock.patch.object(
                    self.controller, 'DELETE',
                    return_value=swob.HTTPNoContent())) as (
                mock_shutdown_safe, mock_delete):
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'X-Timestamp: 1364456113.76334\r\n'
                     '\r\n'
                     ':UPDATES: END\r\n')
            mock_wsgi_input = _Wrapper(req.body)
            req.environ['wsgi.input'] = mock_wsgi_input
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':UPDATES: START', ':UPDATES: END'])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(mock_shutdown_safe.called)
            self.assertFalse(mock_wsgi_input.mock_socket.close.called)

    def test_UPDATES_bad_subrequest_line(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'bad_subrequest_line\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'need more than 1 value to unpack'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

            with mock.patch.object(
                    self.controller, 'DELETE',
                    return_value=swob.HTTPNoContent()):
                self.controller.logger = mock.MagicMock()
                req = swob.Request.blank(
                    '/device/partition',
                    environ={'REQUEST_METHOD': 'REPLICATION'},
                    body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                         ':UPDATES: START\r\n'
                         'DELETE /a/c/o\r\n'
                         'X-Timestamp: 1364456113.76334\r\n'
                         '\r\n'
                         'bad_subrequest_line2')
                resp = req.get_response(self.controller)
                self.assertEqual(
                    self.body_lines(resp.body),
                    [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                     ":ERROR: 0 'need more than 1 value to unpack'"])
                self.assertEqual(resp.status_int, 200)
                self.controller.logger.exception.assert_called_once_with(
                    'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_no_headers(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'Got no headers for DELETE /a/c/o'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_bad_headers(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'Bad-Header Test\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'need more than 1 value to unpack'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'Good-Header: Test\r\n'
                     'Bad-Header Test\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'need more than 1 value to unpack'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_bad_content_length(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'PUT /a/c/o\r\n'
                     'Content-Length: a\r\n\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':ERROR: 0 "invalid literal for int() with base 10: \'a\'"'])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_content_length_with_DELETE(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'Content-Length: 1\r\n\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'DELETE subrequest with content-length /a/c/o'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_no_content_length_with_PUT(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'PUT /a/c/o\r\n\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'No content-length sent for PUT /a/c/o'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_early_termination(self):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'PUT /a/c/o\r\n'
                     'Content-Length: 1\r\n\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'Early termination for PUT /a/c/o'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')

    def test_UPDATES_failures(self):

        @server.public
        def _DELETE(request):
            if request.path == '/device/partition/a/c/works':
                return swob.HTTPOk()
            else:
                return swob.HTTPInternalServerError()

        # failures never hit threshold
        with mock.patch.object(self.controller, 'DELETE', _DELETE):
            self.controller.replication_failure_threshold = 4
            self.controller.replication_failure_ratio = 1.5
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 500 'ERROR: With :UPDATES: 3 failures to 0 "
                 "successes'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.exception.called)
            self.assertFalse(self.controller.logger.error.called)

        # failures hit threshold and no successes, so ratio is like infinity
        with mock.patch.object(self.controller, 'DELETE', _DELETE):
            self.controller.replication_failure_threshold = 4
            self.controller.replication_failure_ratio = 1.5
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     ':UPDATES: END\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'Too many 4 failures to 0 successes'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')
            self.assertFalse(self.controller.logger.error.called)

        # failures hit threshold and ratio hits 1.33333333333
        with mock.patch.object(self.controller, 'DELETE', _DELETE):
            self.controller.replication_failure_threshold = 4
            self.controller.replication_failure_ratio = 1.5
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/works\r\n\r\n'
                     'DELETE /a/c/works\r\n\r\n'
                     'DELETE /a/c/works\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     ':UPDATES: END\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 500 'ERROR: With :UPDATES: 4 failures to 3 "
                 "successes'"])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.exception.called)
            self.assertFalse(self.controller.logger.error.called)

        # failures hit threshold and ratio hits 2.0
        with mock.patch.object(self.controller, 'DELETE', _DELETE):
            self.controller.replication_failure_threshold = 4
            self.controller.replication_failure_ratio = 1.5
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/works\r\n\r\n'
                     'DELETE /a/c/works\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     'DELETE /a/c/o\r\n\r\n'
                     ':UPDATES: END\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ":ERROR: 0 'Too many 4 failures to 2 successes'"])
            self.assertEqual(resp.status_int, 200)
            self.controller.logger.exception.assert_called_once_with(
                'None/device/partition EXCEPTION in replication.Receiver')
            self.assertFalse(self.controller.logger.error.called)

    def test_UPDATES_PUT(self):
        _PUT_request = [None]

        @server.public
        def _PUT(request):
            _PUT_request[0] = request
            request.read_body = request.environ['wsgi.input'].read()
            return swob.HTTPOk()

        with mock.patch.object(self.controller, 'PUT', _PUT):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'PUT /a/c/o\r\n'
                     'Content-Length: 1\r\n'
                     'X-Timestamp: 1364456113.12344\r\n'
                     'X-Object-Meta-Test1: one\r\n'
                     'Content-Encoding: gzip\r\n'
                     'Specialty-Header: value\r\n'
                     '\r\n'
                     '1')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':UPDATES: START', ':UPDATES: END'])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.exception.called)
            self.assertFalse(self.controller.logger.error.called)
            req = _PUT_request[0]
            self.assertEqual(req.path, '/device/partition/a/c/o')
            self.assertEqual(req.content_length, 1)
            self.assertEqual(req.headers, {
                'Content-Length': '1',
                'X-Timestamp': '1364456113.12344',
                'X-Object-Meta-Test1': 'one',
                'Content-Encoding': 'gzip',
                'Specialty-Header': 'value',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': (
                    'content-length x-timestamp x-object-meta-test1 '
                    'content-encoding specialty-header')})
            self.assertEqual(req.read_body, '1')

    def test_UPDATES_DELETE(self):
        _DELETE_request = [None]

        @server.public
        def _DELETE(request):
            _DELETE_request[0] = request
            return swob.HTTPOk()

        with mock.patch.object(self.controller, 'DELETE', _DELETE):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'DELETE /a/c/o\r\n'
                     'X-Timestamp: 1364456113.76334\r\n'
                     '\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':UPDATES: START', ':UPDATES: END'])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.exception.called)
            self.assertFalse(self.controller.logger.error.called)
            req = _DELETE_request[0]
            self.assertEqual(req.path, '/device/partition/a/c/o')
            self.assertEqual(req.headers, {
                'X-Timestamp': '1364456113.76334',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': 'x-timestamp'})

    def test_UPDATES_BONK(self):
        _BONK_request = [None]

        @server.public
        def _BONK(request):
            _BONK_request[0] = request
            return swob.HTTPOk()

        self.controller.BONK = _BONK
        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/device/partition',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n'
                 'BONK /a/c/o\r\n'
                 'X-Timestamp: 1364456113.76334\r\n'
                 '\r\n')
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START', ':MISSING_CHECK: END',
             ":ERROR: 0 'Invalid subrequest method BONK'"])
        self.assertEqual(resp.status_int, 200)
        self.controller.logger.exception.assert_called_once_with(
            'None/device/partition EXCEPTION in replication.Receiver')
        self.assertEqual(_BONK_request[0], None)

    def test_UPDATES_multiple(self):
        _requests = []

        @server.public
        def _PUT(request):
            _requests.append(request)
            request.read_body = request.environ['wsgi.input'].read()
            return swob.HTTPOk()

        @server.public
        def _DELETE(request):
            _requests.append(request)
            return swob.HTTPOk()

        with contextlib.nested(
                mock.patch.object(self.controller, 'PUT', _PUT),
                mock.patch.object(self.controller, 'DELETE', _DELETE)):
            self.controller.logger = mock.MagicMock()
            req = swob.Request.blank(
                '/device/partition',
                environ={'REQUEST_METHOD': 'REPLICATION'},
                body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                     ':UPDATES: START\r\n'
                     'PUT /a/c/o1\r\n'
                     'Content-Length: 1\r\n'
                     'X-Timestamp: 1364456113.00001\r\n'
                     'X-Object-Meta-Test1: one\r\n'
                     'Content-Encoding: gzip\r\n'
                     'Specialty-Header: value\r\n'
                     '\r\n'
                     '1'
                     'DELETE /a/c/o2\r\n'
                     'X-Timestamp: 1364456113.00002\r\n'
                     '\r\n'
                     'PUT /a/c/o3\r\n'
                     'Content-Length: 3\r\n'
                     'X-Timestamp: 1364456113.00003\r\n'
                     '\r\n'
                     '123'
                     'PUT /a/c/o4\r\n'
                     'Content-Length: 4\r\n'
                     'X-Timestamp: 1364456113.00004\r\n'
                     '\r\n'
                     '1\r\n4'
                     'DELETE /a/c/o5\r\n'
                     'X-Timestamp: 1364456113.00005\r\n'
                     '\r\n'
                     'DELETE /a/c/o6\r\n'
                     'X-Timestamp: 1364456113.00006\r\n'
                     '\r\n')
            resp = req.get_response(self.controller)
            self.assertEqual(
                self.body_lines(resp.body),
                [':MISSING_CHECK: START', ':MISSING_CHECK: END',
                 ':UPDATES: START', ':UPDATES: END'])
            self.assertEqual(resp.status_int, 200)
            self.assertFalse(self.controller.logger.exception.called)
            self.assertFalse(self.controller.logger.error.called)
            req = _requests.pop(0)
            self.assertEqual(req.method, 'PUT')
            self.assertEqual(req.path, '/device/partition/a/c/o1')
            self.assertEqual(req.content_length, 1)
            self.assertEqual(req.headers, {
                'Content-Length': '1',
                'X-Timestamp': '1364456113.00001',
                'X-Object-Meta-Test1': 'one',
                'Content-Encoding': 'gzip',
                'Specialty-Header': 'value',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': (
                    'content-length x-timestamp x-object-meta-test1 '
                    'content-encoding specialty-header')})
            self.assertEqual(req.read_body, '1')
            req = _requests.pop(0)
            self.assertEqual(req.method, 'DELETE')
            self.assertEqual(req.path, '/device/partition/a/c/o2')
            self.assertEqual(req.headers, {
                'X-Timestamp': '1364456113.00002',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': 'x-timestamp'})
            req = _requests.pop(0)
            self.assertEqual(req.method, 'PUT')
            self.assertEqual(req.path, '/device/partition/a/c/o3')
            self.assertEqual(req.content_length, 3)
            self.assertEqual(req.headers, {
                'Content-Length': '3',
                'X-Timestamp': '1364456113.00003',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': (
                    'content-length x-timestamp')})
            self.assertEqual(req.read_body, '123')
            req = _requests.pop(0)
            self.assertEqual(req.method, 'PUT')
            self.assertEqual(req.path, '/device/partition/a/c/o4')
            self.assertEqual(req.content_length, 4)
            self.assertEqual(req.headers, {
                'Content-Length': '4',
                'X-Timestamp': '1364456113.00004',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': (
                    'content-length x-timestamp')})
            self.assertEqual(req.read_body, '1\r\n4')
            req = _requests.pop(0)
            self.assertEqual(req.method, 'DELETE')
            self.assertEqual(req.path, '/device/partition/a/c/o5')
            self.assertEqual(req.headers, {
                'X-Timestamp': '1364456113.00005',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': 'x-timestamp'})
            req = _requests.pop(0)
            self.assertEqual(req.method, 'DELETE')
            self.assertEqual(req.path, '/device/partition/a/c/o6')
            self.assertEqual(req.headers, {
                'X-Timestamp': '1364456113.00006',
                'Host': 'localhost:80',
                'X-Backend-Replication': 'True',
                'X-Backend-Replication-Headers': 'x-timestamp'})
            self.assertEqual(_requests, [])

    def test_UPDATES_subreq_does_not_read_all(self):
        # This tests that if a REPLICATION subrequest fails and doesn't read
        # all the subrequest body that it will read and throw away the rest of
        # the body before moving on to the next subrequest.
        # If you comment out the part in ssync_receiver where it does:
        #     for junk in subreq.environ['wsgi.input']:
        #         pass
        # You can then see this test fail.
        _requests = []

        @server.public
        def _PUT(request):
            _requests.append(request)
            # Deliberately just reading up to first 2 bytes.
            request.read_body = request.environ['wsgi.input'].read(2)
            return swob.HTTPInternalServerError()

        class _IgnoreReadlineHint(StringIO.StringIO):

            def __init__(self, value):
                StringIO.StringIO.__init__(self, value)

            def readline(self, hint=-1):
                return StringIO.StringIO.readline(self)

        self.controller.PUT = _PUT
        self.controller.network_chunk_size = 2
        self.controller.logger = mock.MagicMock()
        req = swob.Request.blank(
            '/device/partition',
            environ={'REQUEST_METHOD': 'REPLICATION'},
            body=':MISSING_CHECK: START\r\n:MISSING_CHECK: END\r\n'
                 ':UPDATES: START\r\n'
                 'PUT /a/c/o1\r\n'
                 'Content-Length: 3\r\n'
                 'X-Timestamp: 1364456113.00001\r\n'
                 '\r\n'
                 '123'
                 'PUT /a/c/o2\r\n'
                 'Content-Length: 1\r\n'
                 'X-Timestamp: 1364456113.00002\r\n'
                 '\r\n'
                 '1')
        req.environ['wsgi.input'] = _IgnoreReadlineHint(req.body)
        resp = req.get_response(self.controller)
        self.assertEqual(
            self.body_lines(resp.body),
            [':MISSING_CHECK: START', ':MISSING_CHECK: END',
             ":ERROR: 500 'ERROR: With :UPDATES: 2 failures to 0 successes'"])
        self.assertEqual(resp.status_int, 200)
        self.assertFalse(self.controller.logger.exception.called)
        self.assertFalse(self.controller.logger.error.called)
        req = _requests.pop(0)
        self.assertEqual(req.path, '/device/partition/a/c/o1')
        self.assertEqual(req.content_length, 3)
        self.assertEqual(req.headers, {
            'Content-Length': '3',
            'X-Timestamp': '1364456113.00001',
            'Host': 'localhost:80',
            'X-Backend-Replication': 'True',
            'X-Backend-Replication-Headers': (
                'content-length x-timestamp')})
        self.assertEqual(req.read_body, '12')
        req = _requests.pop(0)
        self.assertEqual(req.path, '/device/partition/a/c/o2')
        self.assertEqual(req.content_length, 1)
        self.assertEqual(req.headers, {
            'Content-Length': '1',
            'X-Timestamp': '1364456113.00002',
            'Host': 'localhost:80',
            'X-Backend-Replication': 'True',
            'X-Backend-Replication-Headers': (
                'content-length x-timestamp')})
        self.assertEqual(req.read_body, '1')
        self.assertEqual(_requests, [])


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