384 lines
11 KiB
Python
384 lines
11 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2015 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from twisted.internet import defer, reactor
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from twisted.enterprise import adbapi
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from synapse.storage._base import LoggingTransaction, SQLBaseStore
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from synapse.storage.engines import create_engine
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import argparse
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import itertools
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import logging
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import types
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import yaml
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logger = logging.getLogger("port_to_maria")
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BINARY_COLUMNS = {
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"event_content_hashes": ["hash"],
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"event_reference_hashes": ["hash"],
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"event_signatures": ["signature"],
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"event_edge_hashes": ["hash"],
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"events": ["content", "unrecognized_keys"],
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"event_json": ["internal_metadata", "json"],
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"application_services_txns": ["event_ids"],
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"received_transactions": ["response_json"],
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"sent_transactions": ["response_json"],
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"server_tls_certificates": ["tls_certificate"],
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"server_signature_keys": ["verify_key"],
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"pushers": ["pushkey", "data"],
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"user_filters": ["filter_json"],
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}
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UNICODE_COLUMNS = {
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"events": ["content", "unrecognized_keys"],
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"event_json": ["internal_metadata", "json"],
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"users": ["password_hash"],
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}
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BOOLEAN_COLUMNS = {
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"events": ["processed", "outlier"],
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"rooms": ["is_public"],
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"event_edges": ["is_state"],
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"presence_list": ["accepted"],
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}
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APPEND_ONLY_TABLES = [
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"event_content_hashes",
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"event_reference_hashes",
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"event_signatures",
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"event_edge_hashes",
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"events",
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"event_json",
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"state_events",
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"room_memberships",
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"feedback",
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"topics",
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"room_names",
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"rooms",
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"local_media_repository",
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"local_media_repository_thumbnails",
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"remote_media_cache",
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"remote_media_cache_thumbnails",
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"redactions",
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"event_edges",
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"event_auth",
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"received_transactions",
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"sent_transactions",
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"transaction_id_to_pdu",
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"users",
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"state_groups",
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"state_groups_state",
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"event_to_state_groups",
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"rejections",
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]
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class Store(object):
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def __init__(self, db_pool, engine):
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self.db_pool = db_pool
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self.database_engine = engine
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_simple_insert_txn = SQLBaseStore.__dict__["_simple_insert_txn"]
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_simple_insert = SQLBaseStore.__dict__["_simple_insert"]
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_simple_select_onecol_txn = SQLBaseStore.__dict__["_simple_select_onecol_txn"]
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_simple_select_onecol = SQLBaseStore.__dict__["_simple_select_onecol"]
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_simple_select_one_onecol = SQLBaseStore.__dict__["_simple_select_one_onecol"]
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_simple_select_one_onecol_txn = SQLBaseStore.__dict__["_simple_select_one_onecol_txn"]
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_simple_update_one = SQLBaseStore.__dict__["_simple_update_one"]
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_simple_update_one_txn = SQLBaseStore.__dict__["_simple_update_one_txn"]
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_execute_and_decode = SQLBaseStore.__dict__["_execute_and_decode"]
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def runInteraction(self, desc, func, *args, **kwargs):
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def r(conn):
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try:
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i = 0
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N = 5
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while True:
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try:
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txn = conn.cursor()
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return func(
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LoggingTransaction(txn, desc, self.database_engine),
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*args, **kwargs
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)
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except self.database_engine.module.DatabaseError as e:
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if self.database_engine.is_deadlock(e):
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logger.warn("[TXN DEADLOCK] {%s} %d/%d", desc, i, N)
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if i < N:
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i += 1
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conn.rollback()
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continue
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raise
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except Exception as e:
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logger.debug("[TXN FAIL] {%s}", desc, e)
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raise
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return self.db_pool.runWithConnection(r)
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def insert_many_txn(self, txn, table, headers, rows):
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sql = "INSERT INTO %s (%s) VALUES (%s)" % (
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table,
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", ".join(k for k in headers),
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", ".join("%s" for _ in headers)
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)
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try:
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txn.executemany(sql, rows)
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except:
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logger.exception(
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"Failed to insert: %s",
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table,
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)
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raise
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def chunks(n):
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for i in itertools.count(0, n):
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yield range(i, i+n)
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@defer.inlineCallbacks
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def handle_table(table, sqlite_store, mysql_store):
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if table in APPEND_ONLY_TABLES:
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# It's safe to just carry on inserting.
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next_chunk = yield mysql_store._simple_select_one_onecol(
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table="port_from_sqlite3",
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keyvalues={"table_name": table},
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retcol="rowid",
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allow_none=True,
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)
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if next_chunk is None:
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yield mysql_store._simple_insert(
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table="port_from_sqlite3",
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values={"table_name": table, "rowid": 0}
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)
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next_chunk = 0
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else:
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def delete_all(txn):
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txn.execute(
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"DELETE FROM port_from_sqlite3 WHERE table_name = %s",
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(table,)
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)
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txn.execute("TRUNCATE %s CASCADE" % (table,))
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mysql_store._simple_insert_txn(
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txn,
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table="port_from_sqlite3",
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values={"table_name": table, "rowid": 0}
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)
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yield mysql_store.runInteraction(
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"delete_non_append_only", delete_all
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)
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next_chunk = 0
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logger.info("next_chunk for %s: %d", table, next_chunk)
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N = 5000
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select = "SELECT rowid, * FROM %s WHERE rowid >= ? ORDER BY rowid LIMIT ?" % (table,)
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uni_col_names = UNICODE_COLUMNS.get(table, [])
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bool_col_names = BOOLEAN_COLUMNS.get(table, [])
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bin_col_names = BINARY_COLUMNS.get(table, [])
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while True:
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def r(txn):
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txn.execute(select, (next_chunk, N,))
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rows = txn.fetchall()
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headers = [column[0] for column in txn.description]
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return headers, rows
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headers, rows = yield sqlite_store.runInteraction("select", r)
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logger.info("Got %d rows for %s", len(rows), table)
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if rows:
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uni_cols = [i for i, h in enumerate(headers) if h in uni_col_names]
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bool_cols = [i for i, h in enumerate(headers) if h in bool_col_names]
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bin_cols = [i for i, h in enumerate(headers) if h in bin_col_names]
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next_chunk = rows[-1][0] + 1
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def conv(j, col):
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if j in uni_cols:
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col = sqlite_store.database_engine.load_unicode(col)
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if j in bool_cols:
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return bool(col)
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if j in bin_cols:
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if isinstance(col, types.UnicodeType):
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col = buffer(col.encode("utf8"))
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return col
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for i, row in enumerate(rows):
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rows[i] = tuple(
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mysql_store.database_engine.encode_parameter(
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conv(j, col)
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)
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for j, col in enumerate(row)
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if j > 0
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)
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def ins(txn):
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mysql_store.insert_many_txn(txn, table, headers[1:], rows)
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mysql_store._simple_update_one_txn(
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txn,
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table="port_from_sqlite3",
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keyvalues={"table_name": table},
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updatevalues={"rowid": next_chunk},
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)
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yield mysql_store.runInteraction("insert_many", ins)
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else:
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return
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def setup_db(db_config, database_engine):
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db_conn = database_engine.module.connect(
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**{
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k: v for k, v in db_config.get("args", {}).items()
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if not k.startswith("cp_")
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}
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)
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database_engine.prepare_database(db_conn)
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db_conn.commit()
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@defer.inlineCallbacks
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def main(sqlite_config, mysql_config):
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try:
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sqlite_db_pool = adbapi.ConnectionPool(
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sqlite_config["name"],
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**sqlite_config["args"]
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)
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mysql_db_pool = adbapi.ConnectionPool(
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mysql_config["name"],
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**mysql_config["args"]
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)
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sqlite_engine = create_engine("sqlite3")
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mysql_engine = create_engine("psycopg2")
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sqlite_store = Store(sqlite_db_pool, sqlite_engine)
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mysql_store = Store(mysql_db_pool, mysql_engine)
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# Step 1. Set up mysql database.
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logger.info("Preparing sqlite database...")
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setup_db(sqlite_config, sqlite_engine)
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logger.info("Preparing mysql database...")
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setup_db(mysql_config, mysql_engine)
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# Step 2. Get tables.
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logger.info("Fetching tables...")
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tables = yield sqlite_store._simple_select_onecol(
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table="sqlite_master",
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keyvalues={
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"type": "table",
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},
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retcol="name",
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)
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logger.info("Found %d tables", len(tables))
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def create_port_table(txn):
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txn.execute(
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"CREATE TABLE port_from_sqlite3 ("
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" table_name varchar(100) NOT NULL UNIQUE,"
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" rowid bigint NOT NULL"
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")"
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)
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try:
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yield mysql_store.runInteraction(
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"create_port_table", create_port_table
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)
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except Exception as e:
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logger.info("Failed to create port table: %s", e)
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# Process tables.
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yield defer.gatherResults(
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[
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handle_table(table, sqlite_store, mysql_store)
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for table in tables
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if table not in ["schema_version", "applied_schema_deltas"]
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and not table.startswith("sqlite_")
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],
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consumeErrors=True,
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)
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# for table in ["current_state_events"]: # tables:
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# if table not in ["schema_version", "applied_schema_deltas"]:
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# if not table.startswith("sqlite_"):
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# yield handle_table(table, sqlite_store, mysql_store)
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except:
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logger.exception("")
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finally:
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reactor.stop()
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if __name__ == "__main__":
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parser = argparse.ArgumentParser()
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parser.add_argument("--sqlite-database")
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parser.add_argument(
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"--mysql-config", type=argparse.FileType('r'),
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)
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args = parser.parse_args()
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logging.basicConfig(level=logging.INFO)
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sqlite_config = {
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"name": "sqlite3",
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"args": {
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"database": args.sqlite_database,
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"cp_min": 1,
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"cp_max": 1,
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"check_same_thread": False,
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},
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}
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mysql_config = yaml.safe_load(args.mysql_config)
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# mysql_config["args"].update({
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# "sql_mode": "TRADITIONAL",
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# "charset": "utf8mb4",
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# "use_unicode": True,
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# "collation": "utf8mb4_bin",
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# })
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reactor.callWhenRunning(
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main,
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sqlite_config=sqlite_config,
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mysql_config=mysql_config,
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)
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reactor.run()
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