# Copyright (c) 2010-2012 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 io
import json
import unittest
import os
from contextlib import contextmanager
import time
import pickle

import mock
from six.moves import urllib

from swift.common import direct_client
from swift.common.direct_client import DirectClientException
from swift.common.exceptions import ClientException
from swift.common.header_key_dict import HeaderKeyDict
from swift.common.utils import Timestamp, quote, md5
from swift.common.swob import RESPONSE_REASONS
from swift.common.storage_policy import POLICIES
from six.moves.http_client import HTTPException

from test.debug_logger import debug_logger
from test.unit import patch_policies


class FakeConn(object):

    def __init__(self, status, headers=None, body='', **kwargs):
        self.status = status
        try:
            self.reason = RESPONSE_REASONS[self.status][0]
        except Exception:
            self.reason = 'Fake'
        self.body = body
        self.resp_headers = HeaderKeyDict()
        if headers:
            self.resp_headers.update(headers)
        self.etag = None

    def _update_raw_call_args(self, *args, **kwargs):
        capture_attrs = ('host', 'port', 'method', 'path', 'req_headers',
                         'query_string')
        for attr, value in zip(capture_attrs, args[:len(capture_attrs)]):
            setattr(self, attr, value)
        return self

    def getresponse(self):
        if self.etag:
            self.resp_headers['etag'] = str(self.etag.hexdigest())
        if isinstance(self.status, Exception):
            raise self.status
        return self

    def getheader(self, header, default=None):
        return self.resp_headers.get(header, default)

    def getheaders(self):
        return self.resp_headers.items()

    def read(self, amt=None):
        if isinstance(self.body, io.BytesIO):
            return self.body.read(amt)
        elif amt is None:
            return self.body
        else:
            return Exception('Not a StringIO entry')

    def send(self, data):
        if not self.etag:
            self.etag = md5(usedforsecurity=False)
        self.etag.update(data)


@contextmanager
def mocked_http_conn(*args, **kwargs):
    mocked = kwargs.pop('mocked', 'swift.common.bufferedhttp.http_connect_raw')
    fake_conn = FakeConn(*args, **kwargs)
    mock_http_conn = lambda *args, **kwargs: \
        fake_conn._update_raw_call_args(*args, **kwargs)
    with mock.patch(mocked, new=mock_http_conn):
        yield fake_conn


@patch_policies
class TestDirectClient(unittest.TestCase):

    def setUp(self):
        self.node = json.loads(json.dumps({  # json roundtrip to ring-like
            'ip': '1.2.3.4', 'port': '6200', 'device': 'sda',
            'replication_ip': '1.2.3.5', 'replication_port': '7000'}))
        self.part = '0'

        self.account = u'\u062a account'
        self.container = u'\u062a container'
        self.obj = u'\u062a obj/name'
        self.account_path = '/sda/0/%s' % urllib.parse.quote(
            self.account.encode('utf-8'))
        self.container_path = '/sda/0/%s/%s' % tuple(
            urllib.parse.quote(p.encode('utf-8')) for p in (
                self.account, self.container))
        self.obj_path = '/sda/0/%s/%s/%s' % tuple(
            urllib.parse.quote(p.encode('utf-8')) for p in (
                self.account, self.container, self.obj))
        self.user_agent = 'direct-client %s' % os.getpid()

        class FakeTimeout(BaseException):
            def __enter__(self):
                return self

            def __exit__(self, typ, value, tb):
                pass

        patcher = mock.patch.object(direct_client, 'Timeout', FakeTimeout)
        patcher.start()
        self.addCleanup(patcher.stop)

    def test_gen_headers(self):
        stub_user_agent = 'direct-client %s' % os.getpid()

        headers = direct_client.gen_headers(add_ts=False)
        self.assertEqual(dict(headers), {
            'User-Agent': stub_user_agent,
            'X-Backend-Allow-Reserved-Names': 'true',
        })

        with mock.patch('swift.common.utils.Timestamp.now',
                        return_value=Timestamp('123.45')):
            headers = direct_client.gen_headers()
        self.assertEqual(dict(headers), {
            'User-Agent': stub_user_agent,
            'X-Backend-Allow-Reserved-Names': 'true',
            'X-Timestamp': '0000000123.45000',
        })

        headers = direct_client.gen_headers(hdrs_in={'x-timestamp': '15'})
        self.assertEqual(dict(headers), {
            'User-Agent': stub_user_agent,
            'X-Backend-Allow-Reserved-Names': 'true',
            'X-Timestamp': '15',
        })

        with mock.patch('swift.common.utils.Timestamp.now',
                        return_value=Timestamp('12345.6789')):
            headers = direct_client.gen_headers(hdrs_in={'foo-bar': '63'})
        self.assertEqual(dict(headers), {
            'User-Agent': stub_user_agent,
            'Foo-Bar': '63',
            'X-Backend-Allow-Reserved-Names': 'true',
            'X-Timestamp': '0000012345.67890',
        })

        hdrs_in = {'foo-bar': '55'}
        headers = direct_client.gen_headers(hdrs_in, add_ts=False)
        self.assertEqual(dict(headers), {
            'User-Agent': stub_user_agent,
            'Foo-Bar': '55',
            'X-Backend-Allow-Reserved-Names': 'true',
        })

        with mock.patch('swift.common.utils.Timestamp.now',
                        return_value=Timestamp('12345')):
            headers = direct_client.gen_headers(hdrs_in={'user-agent': '32'})
        self.assertEqual(dict(headers), {
            'User-Agent': '32',
            'X-Backend-Allow-Reserved-Names': 'true',
            'X-Timestamp': '0000012345.00000',
        })

        hdrs_in = {'user-agent': '47'}
        headers = direct_client.gen_headers(hdrs_in, add_ts=False)
        self.assertEqual(dict(headers), {
            'User-Agent': '47',
            'X-Backend-Allow-Reserved-Names': 'true',
        })

        for policy in POLICIES:
            for add_ts in (True, False):
                with mock.patch('swift.common.utils.Timestamp.now',
                                return_value=Timestamp('123456789')):
                    headers = direct_client.gen_headers(
                        {'X-Backend-Storage-Policy-Index': policy.idx},
                        add_ts=add_ts)
                expected = {
                    'User-Agent': stub_user_agent,
                    'X-Backend-Storage-Policy-Index': str(policy.idx),
                    'X-Backend-Allow-Reserved-Names': 'true',
                }
                if add_ts:
                    expected['X-Timestamp'] = '0123456789.00000'
                self.assertEqual(dict(headers), expected)

    def test_direct_get_account(self):
        def do_test(req_params):
            stub_headers = HeaderKeyDict({
                'X-Account-Container-Count': '1',
                'X-Account-Object-Count': '1',
                'X-Account-Bytes-Used': '1',
                'X-Timestamp': '1234567890',
                'X-PUT-Timestamp': '1234567890'})

            body = b'[{"count": 1, "bytes": 20971520, "name": "c1"}]'

            with mocked_http_conn(200, stub_headers, body) as conn:
                resp_headers, resp = direct_client.direct_get_account(
                    self.node, self.part, self.account, **req_params)
            try:
                self.assertEqual(conn.method, 'GET')
                self.assertEqual(conn.path, self.account_path)
                self.assertEqual(conn.req_headers['user-agent'],
                                 self.user_agent)
                self.assertEqual(resp_headers, stub_headers)
                self.assertEqual(json.loads(body), resp)
                self.assertIn('format=json', conn.query_string)
                for k, v in req_params.items():
                    if v is None:
                        self.assertNotIn('&%s' % k, conn.query_string)
                    else:
                        self.assertIn('&%s=%s' % (k, v), conn.query_string)

            except AssertionError as err:
                self.fail('Failed with params %s: %s' % (req_params, err))

        test_params = (dict(marker=marker, prefix=prefix, delimiter=delimiter,
                       limit=limit, end_marker=end_marker, reverse=reverse)
                       for marker in (None, 'my-marker')
                       for prefix in (None, 'my-prefix')
                       for delimiter in (None, 'my-delimiter')
                       for limit in (None, 1000)
                       for end_marker in (None, 'my-endmarker')
                       for reverse in (None, 'on'))

        for params in test_params:
            do_test(params)

    def test_direct_client_exception(self):
        stub_headers = {'X-Trans-Id': 'txb5f59485c578460f8be9e-0053478d09'}
        body = 'a server error has occurred'
        with mocked_http_conn(500, stub_headers, body):
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_get_account(self.node, self.part,
                                                 self.account)
        self.assertEqual(raised.exception.http_status, 500)
        expected_err_msg_parts = (
            'Account server %s:%s' % (self.node['ip'], self.node['port']),
            'GET %r' % self.account_path,
            'status 500',
        )
        for item in expected_err_msg_parts:
            self.assertIn(item, str(raised.exception))
        self.assertEqual(raised.exception.http_host, self.node['ip'])
        self.assertEqual(raised.exception.http_port, self.node['port'])
        self.assertEqual(raised.exception.http_device, self.node['device'])
        self.assertEqual(raised.exception.http_status, 500)
        self.assertEqual(raised.exception.http_reason, 'Internal Error')
        self.assertEqual(raised.exception.http_headers, stub_headers)

    def test_direct_get_account_no_content_does_not_parse_body(self):
        headers = {
            'X-Account-Container-Count': '1',
            'X-Account-Object-Count': '1',
            'X-Account-Bytes-Used': '1',
            'X-Timestamp': '1234567890',
            'X-Put-Timestamp': '1234567890'}
        with mocked_http_conn(204, headers) as conn:
            resp_headers, resp = direct_client.direct_get_account(
                self.node, self.part, self.account)
            self.assertEqual(conn.method, 'GET')
            self.assertEqual(conn.path, self.account_path)

        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertDictEqual(resp_headers, headers)
        self.assertEqual([], resp)

    def test_direct_get_account_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_get_account(
                    self.node, self.part, self.account)
            self.assertEqual(conn.method, 'GET')
            self.assertEqual(conn.path, self.account_path)
        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('GET' in str(raised.exception))

    def test_direct_delete_account(self):
        part = '0'
        account = 'a'

        mock_path = 'swift.common.bufferedhttp.http_connect_raw'
        with mock.patch(mock_path) as fake_connect:
            fake_connect.return_value.getresponse.return_value.status = 200
            direct_client.direct_delete_account(self.node, part, account)
            args, kwargs = fake_connect.call_args
            ip = args[0]
            self.assertEqual(self.node['ip'], ip)
            port = args[1]
            self.assertEqual(self.node['port'], port)
            method = args[2]
            self.assertEqual('DELETE', method)
            path = args[3]
            self.assertEqual('/sda/0/a', path)
            headers = args[4]
            self.assertIn('X-Timestamp', headers)
            self.assertIn('User-Agent', headers)

    def test_direct_delete_account_replication_net(self):
        part = '0'
        account = 'a'

        mock_path = 'swift.common.bufferedhttp.http_connect_raw'
        with mock.patch(mock_path) as fake_connect:
            fake_connect.return_value.getresponse.return_value.status = 200
            direct_client.direct_delete_account(
                self.node, part, account,
                headers={'X-Backend-Use-Replication-Network': 't'})
            args, kwargs = fake_connect.call_args
            ip = args[0]
            self.assertEqual(self.node['replication_ip'], ip)
            self.assertNotEqual(self.node['ip'], ip)
            port = args[1]
            self.assertEqual(self.node['replication_port'], port)
            self.assertNotEqual(self.node['port'], port)
            method = args[2]
            self.assertEqual('DELETE', method)
            path = args[3]
            self.assertEqual('/sda/0/a', path)
            headers = args[4]
            self.assertIn('X-Timestamp', headers)
            self.assertIn('User-Agent', headers)

    def test_direct_delete_account_failure(self):
        part = '0'
        account = 'a'

        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_delete_account(self.node, part, account)
            self.assertEqual(self.node['ip'], conn.host)
            self.assertEqual(self.node['port'], conn.port)
            self.assertEqual('DELETE', conn.method)
            self.assertEqual('/sda/0/a', conn.path)
            self.assertIn('X-Timestamp', conn.req_headers)
            self.assertIn('User-Agent', conn.req_headers)
            self.assertEqual(raised.exception.http_status, 500)

    def test_direct_head_container(self):
        headers = HeaderKeyDict(key='value')

        with mocked_http_conn(200, headers) as conn:
            resp = direct_client.direct_head_container(
                self.node, self.part, self.account, self.container)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.container_path)

        self.assertEqual(conn.req_headers['user-agent'],
                         self.user_agent)
        self.assertEqual(headers, resp)

    def test_direct_head_container_replication_net(self):
        headers = HeaderKeyDict(key='value')

        with mocked_http_conn(200, headers) as conn:
            resp = direct_client.direct_head_container(
                self.node, self.part, self.account, self.container,
                headers={'X-Backend-Use-Replication-Network': 'on'})
            self.assertEqual(conn.host, self.node['replication_ip'])
            self.assertEqual(conn.port, self.node['replication_port'])
            self.assertNotEqual(conn.host, self.node['ip'])
            self.assertNotEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.container_path)

        self.assertEqual(conn.req_headers['user-agent'],
                         self.user_agent)
        self.assertEqual(headers, resp)

    def test_direct_head_container_error(self):
        headers = HeaderKeyDict(key='value')

        with mocked_http_conn(503, headers) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_head_container(
                    self.node, self.part, self.account, self.container)
            # check request
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.container_path)

        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertEqual(raised.exception.http_status, 503)
        self.assertEqual(raised.exception.http_headers, headers)
        self.assertTrue('HEAD' in str(raised.exception))

    def test_direct_head_container_deleted(self):
        important_timestamp = Timestamp.now().internal
        headers = HeaderKeyDict({'X-Backend-Important-Timestamp':
                                 important_timestamp})

        with mocked_http_conn(404, headers) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_head_container(
                    self.node, self.part, self.account, self.container)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.container_path)

        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertEqual(raised.exception.http_status, 404)
        self.assertEqual(raised.exception.http_headers, headers)

    def test_direct_get_container(self):
        def do_test(req_params):
            headers = HeaderKeyDict({'key': 'value'})
            body = (b'[{"hash": "8f4e3", "last_modified": "317260", '
                    b'"bytes": 209}]')

            with mocked_http_conn(200, headers, body) as conn:
                resp_headers, resp = direct_client.direct_get_container(
                    self.node, self.part, self.account, self.container,
                    **req_params)

            try:
                self.assertEqual(conn.method, 'GET')
                self.assertEqual(conn.path, self.container_path)
                self.assertEqual(conn.req_headers['user-agent'],
                                 self.user_agent)
                self.assertEqual(headers, resp_headers)
                self.assertEqual(json.loads(body), resp)
                self.assertIn('format=json', conn.query_string)
                for k, v in req_params.items():
                    if v is None:
                        self.assertNotIn('&%s' % k, conn.query_string)
                    else:
                        self.assertIn('&%s=%s' % (k, v), conn.query_string)
            except AssertionError as err:
                self.fail('Failed with params %s: %s' % (req_params, err))

        test_params = (dict(marker=marker, prefix=prefix, delimiter=delimiter,
                       limit=limit, end_marker=end_marker, reverse=reverse)
                       for marker in (None, 'my-marker')
                       for prefix in (None, 'my-prefix')
                       for delimiter in (None, 'my-delimiter')
                       for limit in (None, 1000)
                       for end_marker in (None, 'my-endmarker')
                       for reverse in (None, 'on'))

        for params in test_params:
            do_test(params)

    def test_direct_get_container_no_content_does_not_decode_body(self):
        headers = {}
        body = ''
        with mocked_http_conn(204, headers, body) as conn:
            resp_headers, resp = direct_client.direct_get_container(
                self.node, self.part, self.account, self.container)

        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertEqual(headers, resp_headers)
        self.assertEqual([], resp)

    def test_direct_delete_container(self):
        with mocked_http_conn(200) as conn:
            direct_client.direct_delete_container(
                self.node, self.part, self.account, self.container)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.container_path)

    def test_direct_delete_container_replication_net(self):
        with mocked_http_conn(200) as conn:
            direct_client.direct_delete_container(
                self.node, self.part, self.account, self.container,
                headers={'X-Backend-Use-Replication-Network': '1'})
            self.assertEqual(conn.host, self.node['replication_ip'])
            self.assertEqual(conn.port, self.node['replication_port'])
            self.assertNotEqual(conn.host, self.node['ip'])
            self.assertNotEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.container_path)

    def test_direct_delete_container_with_timestamp(self):
        # ensure timestamp is different from any that might be auto-generated
        timestamp = Timestamp(time.time() - 100)
        headers = {'X-Timestamp': timestamp.internal}
        with mocked_http_conn(200) as conn:
            direct_client.direct_delete_container(
                self.node, self.part, self.account, self.container,
                headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.container_path)
            self.assertTrue('X-Timestamp' in conn.req_headers)
            self.assertEqual(timestamp, conn.req_headers['X-Timestamp'])

    def test_direct_delete_container_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_delete_container(
                    self.node, self.part, self.account, self.container)

            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.container_path)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('DELETE' in str(raised.exception))

    def test_direct_put_container(self):
        body = b'Let us begin with a quick introduction'
        headers = {'x-foo': 'bar', 'Content-Length': str(len(body)),
                   'Content-Type': 'application/json',
                   'User-Agent': 'my UA'}

        with mocked_http_conn(204) as conn:
            rv = direct_client.direct_put_container(
                self.node, self.part, self.account, self.container,
                contents=body, headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.container_path)
            self.assertEqual(conn.req_headers['Content-Length'],
                             str(len(body)))
            self.assertEqual(conn.req_headers['Content-Type'],
                             'application/json')
            self.assertEqual(conn.req_headers['User-Agent'], 'my UA')
            self.assertTrue('x-timestamp' in conn.req_headers)
            self.assertEqual('bar', conn.req_headers.get('x-foo'))
            self.assertEqual(
                md5(body, usedforsecurity=False).hexdigest(),
                conn.etag.hexdigest())
        self.assertIsNone(rv)

    def test_direct_put_container_chunked(self):
        body = b'Let us begin with a quick introduction'
        headers = {'x-foo': 'bar', 'Content-Type': 'application/json'}

        with mocked_http_conn(204) as conn:
            rv = direct_client.direct_put_container(
                self.node, self.part, self.account, self.container,
                contents=body, headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.container_path)
            self.assertEqual(conn.req_headers['Transfer-Encoding'], 'chunked')
            self.assertEqual(conn.req_headers['Content-Type'],
                             'application/json')
            self.assertTrue('x-timestamp' in conn.req_headers)
            self.assertEqual('bar', conn.req_headers.get('x-foo'))
            self.assertNotIn('Content-Length', conn.req_headers)
            expected_sent = b'%0x\r\n%s\r\n0\r\n\r\n' % (len(body), body)
            self.assertEqual(
                md5(expected_sent, usedforsecurity=False).hexdigest(),
                conn.etag.hexdigest())
        self.assertIsNone(rv)

    def test_direct_put_container_fail(self):
        with mock.patch('swift.common.bufferedhttp.http_connect_raw',
                        side_effect=Exception('conn failed')):
            with self.assertRaises(Exception) as cm:
                direct_client.direct_put_container(
                    self.node, self.part, self.account, self.container)
        self.assertEqual('conn failed', str(cm.exception))

        with mocked_http_conn(Exception('resp failed')):
            with self.assertRaises(Exception) as cm:
                direct_client.direct_put_container(
                    self.node, self.part, self.account, self.container)
        self.assertEqual('resp failed', str(cm.exception))

    def test_direct_put_container_object(self):
        headers = {'x-foo': 'bar'}

        with mocked_http_conn(204) as conn:
            rv = direct_client.direct_put_container_object(
                self.node, self.part, self.account, self.container, self.obj,
                headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.obj_path)
            self.assertTrue('x-timestamp' in conn.req_headers)
            self.assertEqual('bar', conn.req_headers.get('x-foo'))

        self.assertIsNone(rv)

    def test_direct_put_container_object_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_put_container_object(
                    self.node, self.part, self.account, self.container,
                    self.obj)

            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('PUT' in str(raised.exception))

    def test_direct_delete_container_object(self):
        with mocked_http_conn(204) as conn:
            rv = direct_client.direct_delete_container_object(
                self.node, self.part, self.account, self.container, self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.obj_path)

        self.assertIsNone(rv)

    def test_direct_delete_container_obj_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_delete_container_object(
                    self.node, self.part, self.account, self.container,
                    self.obj)

            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('DELETE' in str(raised.exception))

    def test_direct_head_object(self):
        headers = HeaderKeyDict({'x-foo': 'bar'})

        with mocked_http_conn(200, headers) as conn:
            resp = direct_client.direct_head_object(
                self.node, self.part, self.account, self.container,
                self.obj, headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertEqual('bar', conn.req_headers.get('x-foo'))
        self.assertIn('x-timestamp', conn.req_headers)
        self.assertEqual(headers, resp)

    def test_direct_head_object_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_head_object(
                    self.node, self.part, self.account, self.container,
                    self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('HEAD' in str(raised.exception))

    def test_direct_head_object_not_found(self):
        important_timestamp = Timestamp.now().internal
        stub_headers = {'X-Backend-Important-Timestamp': important_timestamp}
        with mocked_http_conn(404, headers=stub_headers) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_head_object(
                    self.node, self.part, self.account, self.container,
                    self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(raised.exception.http_status, 404)
        self.assertEqual(
            raised.exception.http_headers['x-backend-important-timestamp'],
            important_timestamp)

    def test_direct_get_object(self):
        contents = io.BytesIO(b'123456')

        with mocked_http_conn(200, body=contents) as conn:
            resp_header, obj_body = direct_client.direct_get_object(
                self.node, self.part, self.account, self.container, self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'GET')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(obj_body, contents.getvalue())

    def test_direct_get_object_error(self):
        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_get_object(
                    self.node, self.part,
                    self.account, self.container, self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'GET')
            self.assertEqual(conn.path, self.obj_path)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('GET' in str(raised.exception))

    def test_direct_get_object_chunks(self):
        contents = io.BytesIO(b'123456')

        with mocked_http_conn(200, body=contents) as conn:
            resp_header, obj_body = direct_client.direct_get_object(
                self.node, self.part, self.account, self.container, self.obj,
                resp_chunk_size=2)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual('GET', conn.method)
            self.assertEqual(self.obj_path, conn.path)
            self.assertEqual([b'12', b'34', b'56'], list(obj_body))

    def test_direct_post_object(self):
        headers = {'Key': 'value'}

        resp_headers = []

        with mocked_http_conn(200, resp_headers) as conn:
            direct_client.direct_post_object(
                self.node, self.part, self.account, self.container, self.obj,
                headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'POST')
            self.assertEqual(conn.path, self.obj_path)

        for header in headers:
            self.assertEqual(conn.req_headers[header], headers[header])

    def test_direct_post_object_error(self):
        headers = {'Key': 'value'}

        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_post_object(
                    self.node, self.part, self.account, self.container,
                    self.obj, headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'POST')
            self.assertEqual(conn.path, self.obj_path)
            for header in headers:
                self.assertEqual(conn.req_headers[header], headers[header])
            self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
            self.assertTrue('x-timestamp' in conn.req_headers)

        self.assertEqual(raised.exception.http_status, 500)
        self.assertTrue('POST' in str(raised.exception))

    def test_direct_delete_object(self):
        with mocked_http_conn(200) as conn:
            resp = direct_client.direct_delete_object(
                self.node, self.part, self.account, self.container, self.obj)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.obj_path)
        self.assertIsNone(resp)

    def test_direct_delete_object_with_timestamp(self):
        # ensure timestamp is different from any that might be auto-generated
        timestamp = Timestamp(time.time() - 100)
        headers = {'X-Timestamp': timestamp.internal}
        with mocked_http_conn(200) as conn:
            direct_client.direct_delete_object(
                self.node, self.part, self.account, self.container, self.obj,
                headers=headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.obj_path)
            self.assertTrue('X-Timestamp' in conn.req_headers)
            self.assertEqual(timestamp, conn.req_headers['X-Timestamp'])

    def test_direct_delete_object_error(self):
        with mocked_http_conn(503) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_delete_object(
                    self.node, self.part, self.account, self.container,
                    self.obj)
            self.assertEqual(conn.method, 'DELETE')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(raised.exception.http_status, 503)
        self.assertTrue('DELETE' in str(raised.exception))

    def test_direct_get_suffix_hashes(self):
        data = {'a83': 'c130a2c17ed45102aada0f4eee69494ff'}
        body = pickle.dumps(data)
        with mocked_http_conn(200, {}, body) as conn:
            resp = direct_client.direct_get_suffix_hashes(self.node,
                                                          self.part, ['a83'])
            self.assertEqual(conn.method, 'REPLICATE')
            self.assertEqual(conn.path, '/sda/0/a83')
            self.assertEqual(conn.host, self.node['replication_ip'])
            self.assertEqual(conn.port, self.node['replication_port'])
            self.assertEqual(data, resp)

    def _test_direct_get_suffix_hashes_fail(self, status_code):
        with mocked_http_conn(status_code):
            with self.assertRaises(DirectClientException) as cm:
                direct_client.direct_get_suffix_hashes(
                    self.node, self.part, ['a83', 'b52'])
        self.assertIn('REPLICATE', cm.exception.args[0])
        self.assertIn(quote('/%s/%s/a83-b52'
                            % (self.node['device'], self.part)),
                      cm.exception.args[0])
        self.assertIn(self.node['replication_ip'], cm.exception.args[0])
        self.assertIn(self.node['replication_port'], cm.exception.args[0])
        self.assertEqual(self.node['replication_ip'], cm.exception.http_host)
        self.assertEqual(self.node['replication_port'], cm.exception.http_port)
        self.assertEqual(self.node['device'], cm.exception.http_device)
        self.assertEqual(status_code, cm.exception.http_status)

    def test_direct_get_suffix_hashes_503(self):
        self._test_direct_get_suffix_hashes_fail(503)

    def test_direct_get_suffix_hashes_507(self):
        self._test_direct_get_suffix_hashes_fail(507)

    def test_direct_put_object_with_content_length(self):
        contents = io.BytesIO(b'123456')

        with mocked_http_conn(200) as conn:
            resp = direct_client.direct_put_object(
                self.node, self.part, self.account, self.container, self.obj,
                contents, 6)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(
            md5(b'123456', usedforsecurity=False).hexdigest(),
            resp)

    def test_direct_put_object_fail(self):
        contents = io.BytesIO(b'123456')

        with mocked_http_conn(500) as conn:
            with self.assertRaises(ClientException) as raised:
                direct_client.direct_put_object(
                    self.node, self.part, self.account, self.container,
                    self.obj, contents)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(raised.exception.http_status, 500)

    def test_direct_put_object_chunked(self):
        contents = io.BytesIO(b'123456')

        with mocked_http_conn(200) as conn:
            resp = direct_client.direct_put_object(
                self.node, self.part, self.account, self.container, self.obj,
                contents)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual(conn.method, 'PUT')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(
            md5(b'6\r\n123456\r\n0\r\n\r\n',
                usedforsecurity=False).hexdigest(),
            resp)

    def test_direct_put_object_args(self):
        # One test to cover all missing checks
        contents = ""
        with mocked_http_conn(200) as conn:
            resp = direct_client.direct_put_object(
                self.node, self.part, self.account, self.container, self.obj,
                contents, etag="testing-etag", content_type='Text')
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual('PUT', conn.method)
            self.assertEqual(self.obj_path, conn.path)
            self.assertEqual(conn.req_headers['Content-Length'], '0')
            self.assertEqual(conn.req_headers['Content-Type'], 'Text')
        self.assertEqual(
            md5(b'0\r\n\r\n', usedforsecurity=False).hexdigest(),
            resp)

    def test_direct_put_object_header_content_length(self):
        contents = io.BytesIO(b'123456')
        stub_headers = HeaderKeyDict({
            'Content-Length': '6'})

        with mocked_http_conn(200) as conn:
            resp = direct_client.direct_put_object(
                self.node, self.part, self.account, self.container, self.obj,
                contents, headers=stub_headers)
            self.assertEqual(conn.host, self.node['ip'])
            self.assertEqual(conn.port, self.node['port'])
            self.assertEqual('PUT', conn.method)
            self.assertEqual(conn.req_headers['Content-length'], '6')
        self.assertEqual(
            md5(b'123456', usedforsecurity=False).hexdigest(),
            resp)

    def test_retry(self):
        headers = HeaderKeyDict({'key': 'value'})

        with mocked_http_conn(200, headers) as conn:
            attempts, resp = direct_client.retry(
                direct_client.direct_head_object, self.node, self.part,
                self.account, self.container, self.obj)
            self.assertEqual(conn.method, 'HEAD')
            self.assertEqual(conn.path, self.obj_path)
        self.assertEqual(conn.req_headers['user-agent'], self.user_agent)
        self.assertEqual(headers, resp)
        self.assertEqual(attempts, 1)

    def test_retry_client_exception(self):
        logger = debug_logger('direct-client-test')

        with mock.patch('swift.common.direct_client.sleep') as mock_sleep, \
                mocked_http_conn(500) as conn:
            with self.assertRaises(direct_client.ClientException) as err_ctx:
                direct_client.retry(direct_client.direct_delete_object,
                                    self.node, self.part,
                                    self.account, self.container, self.obj,
                                    retries=2, error_log=logger.error)
        self.assertEqual('DELETE', conn.method)
        self.assertEqual(err_ctx.exception.http_status, 500)
        self.assertIn('DELETE', err_ctx.exception.args[0])
        self.assertIn(self.obj_path,
                      err_ctx.exception.args[0])
        self.assertIn(self.node['ip'], err_ctx.exception.args[0])
        self.assertIn(self.node['port'], err_ctx.exception.args[0])
        self.assertEqual(self.node['ip'], err_ctx.exception.http_host)
        self.assertEqual(self.node['port'], err_ctx.exception.http_port)
        self.assertEqual(self.node['device'], err_ctx.exception.http_device)
        self.assertEqual(500, err_ctx.exception.http_status)
        self.assertEqual([mock.call(1), mock.call(2)],
                         mock_sleep.call_args_list)
        error_lines = logger.get_lines_for_level('error')
        self.assertEqual(3, len(error_lines))
        for line in error_lines:
            self.assertIn('500 Internal Error', line)

    def test_retry_http_exception(self):
        logger = debug_logger('direct-client-test')

        with mock.patch('swift.common.direct_client.sleep') as mock_sleep, \
                mocked_http_conn(HTTPException('Kaboom!')) as conn:
            with self.assertRaises(HTTPException) as err_ctx:
                direct_client.retry(direct_client.direct_delete_object,
                                    self.node, self.part,
                                    self.account, self.container, self.obj,
                                    retries=2, error_log=logger.error)
        self.assertEqual('DELETE', conn.method)
        self.assertEqual('Kaboom!', str(err_ctx.exception))
        self.assertEqual([mock.call(1), mock.call(2)],
                         mock_sleep.call_args_list)
        error_lines = logger.get_lines_for_level('error')
        self.assertEqual(3, len(error_lines))
        for line in error_lines:
            self.assertIn('Kaboom!', line)

    def test_direct_get_recon(self):
        data = {
            "/etc/swift/account.ring.gz": "de7316d2809205fa13ebfc747566260c",
            "/etc/swift/container.ring.gz": "8e63c916fec81825cc40940eefe1d058",
            "/etc/swift/object.ring.gz": "a77f51c14bbf7075bb7be0c27fd00dc4",
            "/etc/swift/object-1.ring.gz": "f0222326f80ee5cb34b7546b18727923",
            "/etc/swift/object-2.ring.gz": "2228dc8a7ff1cf2eb89b116653ac6191"}
        body = json.dumps(data)
        with mocked_http_conn(
                200, {}, body,
                mocked='swift.common.direct_client.http_connect_raw') as conn:
            resp = direct_client.direct_get_recon(self.node, "ringmd5")
        self.assertEqual(conn.method, 'GET')
        self.assertEqual(conn.path, '/recon/ringmd5')
        self.assertEqual(conn.host, self.node['ip'])
        self.assertEqual(conn.port, self.node['port'])
        self.assertEqual(data, resp)

        # Now check failure
        with mocked_http_conn(
                500,
                mocked='swift.common.direct_client.http_connect_raw') as conn:
            with self.assertRaises(ClientException) as raised:
                resp = direct_client.direct_get_recon(self.node, "ringmd5")
        self.assertEqual(conn.host, self.node['ip'])
        self.assertEqual(conn.port, self.node['port'])
        self.assertEqual(conn.method, 'GET')
        self.assertEqual(conn.path, '/recon/ringmd5')
        self.assertEqual(raised.exception.http_status, 500)


class TestUTF8DirectClient(TestDirectClient):

    def setUp(self):
        super(TestUTF8DirectClient, self).setUp()
        self.account = self.account.encode('utf-8')
        self.container = self.container.encode('utf-8')
        self.obj = self.obj.encode('utf-8')


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