1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
# -*- coding: utf-8 -*-
# Copyright 2019 New Vector Ltd
#
# 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 logging
from twisted.internet import defer
from synapse.api.errors import HttpResponseException
from synapse.federation.persistence import TransactionActions
from synapse.federation.units import Transaction
from synapse.util.metrics import measure_func
logger = logging.getLogger(__name__)
class TransactionManager(object):
"""Helper class which handles building and sending transactions
shared between PerDestinationQueue objects
"""
def __init__(self, hs):
self._server_name = hs.hostname
self.clock = hs.get_clock() # nb must be called this for @measure_func
self._store = hs.get_datastore()
self._transaction_actions = TransactionActions(self._store)
self._transport_layer = hs.get_federation_transport_client()
# HACK to get unique tx id
self._next_txn_id = int(self.clock.time_msec())
@measure_func("_send_new_transaction")
@defer.inlineCallbacks
def send_new_transaction(self, destination, pending_pdus, pending_edus):
# Sort based on the order field
pending_pdus.sort(key=lambda t: t[1])
pdus = [x[0] for x in pending_pdus]
edus = pending_edus
success = True
logger.debug("TX [%s] _attempt_new_transaction", destination)
txn_id = str(self._next_txn_id)
logger.debug(
"TX [%s] {%s} Attempting new transaction" " (pdus: %d, edus: %d)",
destination,
txn_id,
len(pdus),
len(edus),
)
transaction = Transaction.create_new(
origin_server_ts=int(self.clock.time_msec()),
transaction_id=txn_id,
origin=self._server_name,
destination=destination,
pdus=pdus,
edus=edus,
)
self._next_txn_id += 1
logger.info(
"TX [%s] {%s} Sending transaction [%s]," " (PDUs: %d, EDUs: %d)",
destination,
txn_id,
transaction.transaction_id,
len(pdus),
len(edus),
)
# Actually send the transaction
# FIXME (erikj): This is a bit of a hack to make the Pdu age
# keys work
def json_data_cb():
data = transaction.get_dict()
now = int(self.clock.time_msec())
if "pdus" in data:
for p in data["pdus"]:
if "age_ts" in p:
unsigned = p.setdefault("unsigned", {})
unsigned["age"] = now - int(p["age_ts"])
del p["age_ts"]
return data
try:
response = yield self._transport_layer.send_transaction(
transaction, json_data_cb
)
code = 200
except HttpResponseException as e:
code = e.code
response = e.response
if e.code in (401, 404, 429) or 500 <= e.code:
logger.info("TX [%s] {%s} got %d response", destination, txn_id, code)
raise e
logger.info("TX [%s] {%s} got %d response", destination, txn_id, code)
if code == 200:
for e_id, r in response.get("pdus", {}).items():
if "error" in r:
logger.warn(
"TX [%s] {%s} Remote returned error for %s: %s",
destination,
txn_id,
e_id,
r,
)
else:
for p in pdus:
logger.warn(
"TX [%s] {%s} Failed to send event %s",
destination,
txn_id,
p.event_id,
)
success = False
return success
|
