add sharding logic
This commit is contained in:
Marco Boss
parent
eadee56dcf
commit
0cf9a9984c
@ -49,6 +49,10 @@ static int gc_db;
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*/
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static uint32_t num_partitions;
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/**
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* -S option: setup a sharded database
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*/
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static uint32_t num_shards;
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/**
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* Main function that will be run.
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@ -113,6 +117,24 @@ run (void *cls,
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return;
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}
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}
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else if (1 <
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num_shards)
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{
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if (GNUNET_OK != plugin->setup_shards (plugin->cls, num_shards))
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{
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GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
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"Could not setup shards. Aborting\n");
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if (GNUNET_OK != plugin->drop_tables (plugin->cls))
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{
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GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
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"Could not drop tables after failed shard setup, please delete the DB manually\n");
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}
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TALER_EXCHANGEDB_plugin_unload (plugin);
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plugin = NULL;
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global_ret = EXIT_NOTINSTALLED;
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return;
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}
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}
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if (gc_db || clear_shards)
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{
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if (GNUNET_OK !=
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@ -178,6 +200,11 @@ main (int argc,
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"NUMBER",
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"Setup a partitioned database where each table which can be partitioned holds NUMBER partitions on a single DB node (NOTE: this is different from sharding)",
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&num_partitions),
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GNUNET_GETOPT_option_uint ('S',
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"shard",
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"NUMBER",
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"Setup a sharded database whit N shards",
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&num_shards),
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GNUNET_GETOPT_OPTION_END
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};
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enum GNUNET_GenericReturnValue ret;
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@ -19,9 +19,19 @@ sql_DATA = \
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benchmark-0001.sql \
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exchange-0000.sql \
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exchange-0001.sql \
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partition-0001.sql \
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shard-0001.sql \
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drop0001.sql
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BUILT_SOURCES = \
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shard-0001.sql \
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exchange-0001.sql
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exchange-0001.sql: common-0001.sql exchange-0001-part.sql
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cat common-0001.sql exchange-0001-part.sql >$@
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shard-0001.sql: common-0001.sql
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cp common-0001.sql $@
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EXTRA_DIST = \
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exchangedb.conf \
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exchangedb-postgres.conf \
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1876
src/exchangedb/common-0001.sql
Normal file
1876
src/exchangedb/common-0001.sql
Normal file
File diff suppressed because it is too large
Load Diff
@ -43,43 +43,65 @@ DROP TABLE IF EXISTS wire_accounts CASCADE;
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DROP TABLE IF EXISTS signkey_revocations CASCADE;
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DROP TABLE IF EXISTS work_shards CASCADE;
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DROP TABLE IF EXISTS prewire CASCADE;
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DROP FUNCTION IF EXISTS create_table_prewire;
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DROP TABLE IF EXISTS recoup CASCADE;
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DROP FUNCTION IF EXISTS create_table_recoup;
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DROP FUNCTION IF EXISTS add_constraints_to_recoup_partition;
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DROP TABLE IF EXISTS recoup_refresh CASCADE;
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DROP FUNCTION IF EXISTS create_table_recoup_refresh;
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DROP FUNCTION IF EXISTS add_constraints_to_recoup_refresh_partition;
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DROP TABLE IF EXISTS aggregation_transient CASCADE;
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DROP FUNCTION IF EXISTS create_table_aggregation_transient;
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DROP TABLE IF EXISTS aggregation_tracking CASCADE;
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DROP FUNCTION IF EXISTS create_table_aggregation_tracking;
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DROP FUNCTION IF EXISTS add_constraints_to_aggregation_tracking_partition;
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DROP TABLE IF EXISTS wire_out CASCADE;
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DROP FUNCTION IF EXISTS create_table_wire_out;
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DROP FUNCTION IF EXISTS add_constraints_to_wire_out_partition;
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DROP TABLE IF EXISTS wire_targets CASCADE;
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DROP FUNCTION IF EXISTS create_table_wire_targets;
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DROP FUNCTION IF EXISTS add_constraints_to_wire_targets_partition;
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DROP TABLE IF EXISTS wire_fee CASCADE;
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DROP TABLE IF EXISTS deposits CASCADE;
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DROP FUNCTION IF EXISTS create_table_deposits;
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DROP TABLE IF EXISTS deposits_by_ready CASCADE;
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DROP FUNCTION IF EXISTS create_table_deposits_by_ready;
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DROP TABLE IF EXISTS deposits_for_matching CASCADE;
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DROP FUNCTION IF EXISTS create_table_deposits_for_matching;
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DROP FUNCTION IF EXISTS add_constraints_to_deposits_partition;
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DROP TABLE IF EXISTS extension_details CASCADE;
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DROP TABLE IF EXISTS refunds CASCADE;
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DROP FUNCTION IF EXISTS create_table_refunds;
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DROP FUNCTION IF EXISTS add_constraints_to_refunds_partition;
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DROP TABLE IF EXISTS refresh_commitments CASCADE;
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DROP FUNCTION IF EXISTS create_table_refresh_commitments;
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DROP FUNCTION IF EXISTS add_constraints_to_refresh_commitments_partition;
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DROP TABLE IF EXISTS refresh_revealed_coins CASCADE;
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DROP FUNCTION IF EXISTS create_table_refresh_revealed_coins;
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DROP FUNCTION IF EXISTS add_constraints_to_refresh_revealed_coins_partition;
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DROP TABLE IF EXISTS refresh_transfer_keys CASCADE;
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DROP FUNCTION IF EXISTS create_table_refresh_transfer_keys;
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DROP FUNCTION IF EXISTS add_constraints_to_refresh_transfer_keys_partition;
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DROP TABLE IF EXISTS known_coins CASCADE;
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DROP FUNCTION IF EXISTS create_table_known_coins;
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DROP FUNCTION IF EXISTS add_constraints_to_known_coins_partition;
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DROP TABLE IF EXISTS reserves_close CASCADE;
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DROP FUNCTION IF EXISTS create_table_reserves_close;
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DROP FUNCTION IF EXISTS add_constraints_to_reserves_close_partition;
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DROP TABLE IF EXISTS reserves_out CASCADE;
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DROP FUNCTION IF EXISTS create_table_reserves_out;
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DROP TABLE IF EXISTS reserves_out_by_reserve CASCADE;
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DROP FUNCTION IF EXISTS create_table_reserves_out_by_reserve;
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DROP FUNCTION IF EXISTS add_constraints_to_reserves_out_partition;
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DROP TABLE IF EXISTS reserves_in CASCADE;
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DROP FUNCTION IF EXISTS create_table_reserves_in;
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DROP FUNCTION IF EXISTS add_constraints_to_reserves_in_partition;
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DROP TABLE IF EXISTS reserves CASCADE;
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DROP FUNCTION IF EXISTS create_table_reserves;
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DROP TABLE IF EXISTS denomination_revocations CASCADE;
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DROP TABLE IF EXISTS denominations CASCADE;
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DROP TABLE IF EXISTS cs_nonce_locks CASCADE;
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DROP FUNCTION IF EXISTS create_table_cs_nonce_locks;
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DROP FUNCTION IF EXISTS add_constraints_to_cs_nonce_locks_partition;
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DROP TABLE IF EXISTS global_fee CASCADE;
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@ -122,14 +144,14 @@ DROP FUNCTION IF EXISTS exchange_do_account_merge;
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DROP FUNCTION IF EXISTS exchange_do_history_request;
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DROP FUNCTION IF EXISTS exchange_do_close_request;
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-- Unregister patch (partition-0001.sql)
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-- SELECT _v.unregister_patch('partition-0001');
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-- Drops for partition-0001.sql
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DROP FUNCTION IF EXISTS create_table_partition;
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DROP FUNCTION IF EXISTS create_partitions;
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DROP FUNCTION IF EXISTS detach_default_partitions;
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DROP FUNCTION IF EXISTS drop_default_partitions;
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DROP FUNCTION IF EXISTS master_prepare_sharding;
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DROP FUNCTION IF EXISTS create_foreign_table;
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DROP FUNCTION IF EXISTS create_shard_server;
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-- And we're out of here...
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2826
src/exchangedb/exchange-0001-part.sql
Normal file
2826
src/exchangedb/exchange-0001-part.sql
Normal file
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@ -1,312 +0,0 @@
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--
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-- This file is part of TALER
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-- Copyright (C) 2014--2022 Taler Systems SA
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--
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-- TALER is free software; you can redistribute it and/or modify it under the
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-- terms of the GNU General Public License as published by the Free Software
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-- Foundation; either version 3, or (at your option) any later version.
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--
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-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
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-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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-- A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License along with
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-- TALER; see the file COPYING. If not, see <http://www.gnu.org/licenses/>
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--
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-- Everything in one big transaction
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BEGIN;
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-- Check patch versioning is in place.
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-- SELECT _v.register_patch('partition-0001', NULL, NULL);
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CREATE OR REPLACE FUNCTION create_table_partition(
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source_table_name VARCHAR
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,modulus INTEGER
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,partition_num INTEGER
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)
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RETURNS VOID
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LANGUAGE plpgsql
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AS $$
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BEGIN
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RAISE NOTICE 'Creating partition %_%', source_table_name, partition_num;
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EXECUTE FORMAT(
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'CREATE TABLE IF NOT EXISTS %I '
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'PARTITION OF %I '
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'FOR VALUES WITH (MODULUS %s, REMAINDER %s)'
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,source_table_name || '_' || partition_num
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,source_table_name
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,modulus
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,partition_num-1
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);
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END
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$$;
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CREATE OR REPLACE FUNCTION detach_default_partitions()
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RETURNS VOID
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LANGUAGE plpgsql
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AS $$
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BEGIN
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RAISE NOTICE 'Detaching all default table partitions';
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ALTER TABLE IF EXISTS wire_targets
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DETACH PARTITION wire_targets_default;
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ALTER TABLE IF EXISTS reserves
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DETACH PARTITION reserves_default;
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ALTER TABLE IF EXISTS reserves_in
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DETACH PARTITION reserves_in_default;
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ALTER TABLE IF EXISTS reserves_close
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DETACH PARTITION reserves_close_default;
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ALTER TABLE IF EXISTS reserves_out
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DETACH PARTITION reserves_out_default;
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ALTER TABLE IF EXISTS known_coins
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DETACH PARTITION known_coins_default;
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ALTER TABLE IF EXISTS refresh_commitments
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DETACH PARTITION refresh_commitments_default;
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ALTER TABLE IF EXISTS refresh_revealed_coins
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DETACH PARTITION refresh_revealed_coins_default;
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ALTER TABLE IF EXISTS refresh_transfer_keys
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DETACH PARTITION refresh_transfer_keys_default;
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ALTER TABLE IF EXISTS deposits
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DETACH PARTITION deposits_default;
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ALTER TABLE IF EXISTS refunds
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DETACH PARTITION refunds_default;
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ALTER TABLE IF EXISTS wire_out
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DETACH PARTITION wire_out_default;
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ALTER TABLE IF EXISTS aggregation_tracking
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DETACH PARTITION aggregation_tracking_default;
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ALTER TABLE IF EXISTS recoup
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DETACH PARTITION recoup_default;
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ALTER TABLE IF EXISTS recoup_refresh
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DETACH PARTITION recoup_refresh_default;
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ALTER TABLE IF EXISTS prewire
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DETACH PARTITION prewire_default;
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ALTER TABLE IF EXISTS cs_nonce_locks
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DETACH partition cs_nonce_locks_default;
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END
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$$;
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COMMENT ON FUNCTION detach_default_partitions
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IS 'We need to drop default and create new one before deleting the default partitions
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otherwise constraints get lost too. Might be needed in shardig too';
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CREATE OR REPLACE FUNCTION drop_default_partitions()
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RETURNS VOID
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LANGUAGE plpgsql
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AS $$
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BEGIN
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RAISE NOTICE 'Dropping default table partitions';
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DROP TABLE IF EXISTS wire_targets_default;
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DROP TABLE IF EXISTS reserves_default;
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DROP TABLE IF EXISTS reserves_in_default;
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DROP TABLE IF EXISTS reserves_close_default;
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DROP TABLE IF EXISTS reserves_out_default;
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DROP TABLE IF EXISTS known_coins_default;
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DROP TABLE IF EXISTS refresh_commitments_default;
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DROP TABLE IF EXISTS refresh_revealed_coins_default;
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DROP TABLE IF EXISTS refresh_transfer_keys_default;
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DROP TABLE IF EXISTS deposits_default;
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DROP TABLE IF EXISTS refunds_default;
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DROP TABLE IF EXISTS wire_out_default;
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DROP TABLE IF EXISTS aggregation_tracking_default;
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DROP TABLE IF EXISTS recoup_default;
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DROP TABLE IF EXISTS recoup_refresh_default;
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DROP TABLE IF EXISTS prewire_default;
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DROP TABLE IF EXISTS cs_nonce_locks_default;
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END
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$$;
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COMMENT ON FUNCTION drop_default_partitions
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IS 'Drop all default partitions once other partitions are attached.
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Might be needed in sharding too.';
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CREATE OR REPLACE FUNCTION create_partitions(
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num_partitions INTEGER
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)
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RETURNS VOID
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LANGUAGE plpgsql
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AS $$
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DECLARE
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modulus INTEGER;
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BEGIN
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modulus := num_partitions;
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PERFORM detach_default_partitions();
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LOOP
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PERFORM create_table_partition(
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'wire_targets'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_wire_targets_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'reserves'
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,modulus
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,num_partitions
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);
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PERFORM create_table_partition(
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'reserves_in'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_reserves_in_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'reserves_close'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_reserves_close_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'reserves_out'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_reserves_out_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'known_coins'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_known_coins_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'refresh_commitments'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_refresh_commitments_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'refresh_revealed_coins'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_refresh_revealed_coins_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'refresh_transfer_keys'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_refresh_transfer_keys_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'deposits'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_deposits_partition(num_partitions::varchar);
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-- TODO: dynamically (!) creating/deleting deposits partitions:
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-- create new partitions 'as needed', drop old ones once the aggregator has made
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-- them empty; as 'new' deposits will always have deadlines in the future, this
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-- would basically guarantee no conflict between aggregator and exchange service!
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-- SEE also: https://www.cybertec-postgresql.com/en/automatic-partition-creation-in-postgresql/
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-- (article is slightly wrong, as this works:)
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--CREATE TABLE tab (
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-- id bigint GENERATED ALWAYS AS IDENTITY,
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-- ts timestamp NOT NULL,
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-- data text
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-- PARTITION BY LIST ((ts::date));
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-- CREATE TABLE tab_def PARTITION OF tab DEFAULT;
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-- BEGIN
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-- CREATE TABLE tab_part2 (LIKE tab);
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-- insert into tab_part2 (id,ts, data) values (5,'2022-03-21', 'foo');
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-- alter table tab attach partition tab_part2 for values in ('2022-03-21');
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-- commit;
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-- Naturally, to ensure this is actually 100% conflict-free, we'd
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-- need to create tables at the granularity of the wire/refund deadlines;
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-- that is right now configurable via AGGREGATOR_SHIFT option.
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PERFORM create_table_partition(
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'refunds'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_refunds_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'wire_out'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_wire_out_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'aggregation_tracking'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_aggregation_tracking_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'recoup'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_recoup_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'recoup_refresh'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_recoup_refresh_partition(num_partitions::varchar);
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PERFORM create_table_partition(
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'prewire'
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,modulus
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,num_partitions
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);
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PERFORM create_table_partition(
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'cs_nonce_locks'
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,modulus
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,num_partitions
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);
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PERFORM add_constraints_to_cs_nonce_locks_partition(num_partitions::varchar);
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num_partitions=num_partitions-1;
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EXIT WHEN num_partitions=0;
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END LOOP;
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PERFORM drop_default_partitions();
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END
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$$;
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COMMIT;
|
||||
@ -227,7 +227,7 @@ postgres_setup_partitions (void *cls,
|
||||
|
||||
conn = GNUNET_PQ_connect_with_cfg (pg->cfg,
|
||||
"exchangedb-postgres",
|
||||
"partition-",
|
||||
"exchage-",
|
||||
NULL,
|
||||
ps);
|
||||
if (NULL == conn)
|
||||
@ -242,6 +242,59 @@ postgres_setup_partitions (void *cls,
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Setup shards for already existing tables
|
||||
*
|
||||
* @param cls the `struct PostgresClosure` with the plugin-specific state
|
||||
* @param num the number of shard servers to create for each partitioned table
|
||||
* @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
|
||||
*/
|
||||
static enum GNUNET_GenericReturnValue
|
||||
postgres_setup_shards (void *cls,
|
||||
const uint32_t num)
|
||||
{
|
||||
struct PostgresClosure *pg = cls;
|
||||
struct GNUNET_PQ_Context *conn;
|
||||
enum GNUNET_GenericReturnValue ret;
|
||||
struct GNUNET_PQ_QueryParam params[] = {
|
||||
GNUNET_PQ_query_param_uint32 (&num),
|
||||
GNUNET_PQ_query_param_end
|
||||
};
|
||||
struct GNUNET_PQ_PreparedStatement ps[] = {
|
||||
GNUNET_PQ_make_prepare ("setup_shards",
|
||||
"SELECT"
|
||||
" master_prepare_sharding"
|
||||
" ();",
|
||||
0),
|
||||
GNUNET_PQ_make_prepare ("create_shards",
|
||||
"SELECT"
|
||||
" create_shards"
|
||||
" ($1);",
|
||||
1),
|
||||
GNUNET_PQ_PREPARED_STATEMENT_END
|
||||
};
|
||||
|
||||
conn = GNUNET_PQ_connect_with_cfg (pg->cfg,
|
||||
"exchangedb-postgres",
|
||||
"exchage-",
|
||||
NULL,
|
||||
ps);
|
||||
if (NULL == conn)
|
||||
return GNUNET_SYSERR;
|
||||
ret = GNUNET_OK;
|
||||
if (0 > GNUNET_PQ_eval_prepared_non_select (conn,
|
||||
"setup_shards",
|
||||
NULL))
|
||||
ret = GNUNET_SYSERR;
|
||||
if (0 > GNUNET_PQ_eval_prepared_non_select (conn,
|
||||
"create_shards",
|
||||
params))
|
||||
ret = GNUNET_SYSERR;
|
||||
GNUNET_PQ_disconnect (conn);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Initialize prepared statements for @a pg.
|
||||
*
|
||||
@ -13062,6 +13115,7 @@ libtaler_plugin_exchangedb_postgres_init (void *cls)
|
||||
plugin->drop_tables = &postgres_drop_tables;
|
||||
plugin->create_tables = &postgres_create_tables;
|
||||
plugin->setup_partitions = &postgres_setup_partitions;
|
||||
plugin->setup_shards = &postgres_setup_shards;
|
||||
plugin->start = &postgres_start;
|
||||
plugin->start_read_committed = &postgres_start_read_committed;
|
||||
plugin->commit = &postgres_commit;
|
||||
|
||||
1876
src/exchangedb/shard-0001.sql
Normal file
1876
src/exchangedb/shard-0001.sql
Normal file
File diff suppressed because it is too large
Load Diff
@ -2241,6 +2241,21 @@ struct TALER_EXCHANGEDB_Plugin
|
||||
(*setup_partitions)(void *cls,
|
||||
const uint32_t num);
|
||||
|
||||
/**
|
||||
* Change already present tables of the database to num shards
|
||||
* Only has an effect if there are default partitions only
|
||||
*
|
||||
* @param cls the @e cls of this struct with the plugin-specific state
|
||||
* @param num the number of shard servers to create. The shard servers
|
||||
* must follow the numbering of 1-N, have the same user as
|
||||
* the master and have tables named <table>_n where n is the same
|
||||
* as the servers index of N.
|
||||
* @return #GNUNET_OK upon success; #GNUNET_SYSERR upon failure
|
||||
*/
|
||||
enum GNUNET_GenericReturnValue
|
||||
(*setup_shards)(void *cls,
|
||||
const uint32_t num);
|
||||
|
||||
/**
|
||||
* Start a transaction.
|
||||
*
|
||||
|
||||
Loading…
Reference in New Issue
Block a user