mirror of
https://github.com/MariaDB/server.git
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378 lines
10 KiB
C++
378 lines
10 KiB
C++
/*
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Copyright (c) 2014, 2023, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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@file storage/perfschema/table_replication_group_member_stats.cc
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Table replication_group_member_stats (implementation).
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*/
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//#define HAVE_REPLICATION
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#include "my_global.h"
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#include "table_replication_group_member_stats.h"
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#include "pfs_instr_class.h"
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#include "pfs_instr.h"
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#include "log.h"
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#include "rpl_group_replication.h"
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/*
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Callbacks implementation for GROUP_REPLICATION_GROUP_MEMBER_STATS_CALLBACKS.
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*/
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static void set_channel_name(void* const context, const char& value,
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size_t length)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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const size_t max= CHANNEL_NAME_LENGTH;
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length= std::min(length, max);
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row->channel_name_length= length;
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memcpy(row->channel_name, &value, length);
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}
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static void set_view_id(void* const context, const char& value, size_t length)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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const size_t max= HOSTNAME_LENGTH;
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length= std::min(length, max);
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row->view_id_length= length;
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memcpy(row->view_id, &value, length);
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}
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static void set_member_id(void* const context, const char& value, size_t length)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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const size_t max= UUID_LENGTH;
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length= std::min(length, max);
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row->member_id_length= length;
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memcpy(row->member_id, &value, length);
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}
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static void set_transactions_committed(void* const context, const char& value,
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size_t length)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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if (row->trx_committed != NULL)
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my_free(row->trx_committed);
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row->trx_committed_length= length;
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row->trx_committed= (char*) my_malloc(PSI_NOT_INSTRUMENTED,
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length,
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MYF(0));
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memcpy(row->trx_committed, &value, length);
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}
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static void set_last_conflict_free_transaction(void* const context,
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const char& value, size_t length)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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const size_t max= Gtid::MAX_TEXT_LENGTH+1;
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length= std::min(length, max);
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row->last_cert_trx_length= length;
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memcpy(row->last_cert_trx, &value, length);
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}
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static void set_transactions_in_queue(void* const context,
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unsigned long long int value)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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row->trx_in_queue= value;
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}
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static void set_transactions_certified(void* const context,
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unsigned long long int value)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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row->trx_checked= value;
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}
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static void set_transactions_conflicts_detected(void* const context,
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unsigned long long int value)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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row->trx_conflicts= value;
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}
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static void set_transactions_rows_in_validation(void* const context,
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unsigned long long int value)
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{
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struct st_row_group_member_stats* row=
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static_cast<struct st_row_group_member_stats*>(context);
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row->trx_rows_validating= value;
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}
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THR_LOCK table_replication_group_member_stats::m_table_lock;
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static const TABLE_FIELD_TYPE field_types[]=
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{
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{
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{C_STRING_WITH_LEN("CHANNEL_NAME")},
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{C_STRING_WITH_LEN("char(64)")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("VIEW_ID")},
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{C_STRING_WITH_LEN("char(60)")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("MEMBER_ID")},
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{C_STRING_WITH_LEN("char(36)")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("COUNT_TRANSACTIONS_IN_QUEUE")},
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{C_STRING_WITH_LEN("bigint")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("COUNT_TRANSACTIONS_CHECKED")},
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{C_STRING_WITH_LEN("bigint")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("COUNT_CONFLICTS_DETECTED")},
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{C_STRING_WITH_LEN("bigint")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("COUNT_TRANSACTIONS_ROWS_VALIDATING")},
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{C_STRING_WITH_LEN("bigint")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("TRANSACTIONS_COMMITTED_ALL_MEMBERS")},
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{C_STRING_WITH_LEN("longtext")},
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{NULL, 0}
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},
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{
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{C_STRING_WITH_LEN("LAST_CONFLICT_FREE_TRANSACTION")},
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{C_STRING_WITH_LEN("text")},
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{NULL, 0}
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}
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};
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TABLE_FIELD_DEF
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table_replication_group_member_stats::m_field_def=
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{ 9, field_types };
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PFS_engine_table_share_state
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table_replication_group_member_stats::m_share_state = {
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false /* m_checked */
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};
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PFS_engine_table_share
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table_replication_group_member_stats::m_share=
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{
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{ C_STRING_WITH_LEN("replication_group_member_stats") },
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&pfs_readonly_acl,
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&table_replication_group_member_stats::create,
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NULL, /* write_row */
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NULL, /* delete_all_rows */
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table_replication_group_member_stats::get_row_count,
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sizeof(PFS_simple_index), /* ref length */
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&m_table_lock,
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&m_field_def,
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false, /* m_perpetual */
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false, /* m_optional */
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&m_share_state
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};
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PFS_engine_table* table_replication_group_member_stats::create(void)
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{
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return new table_replication_group_member_stats();
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}
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table_replication_group_member_stats::table_replication_group_member_stats()
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: PFS_engine_table(&m_share, &m_pos),
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m_row_exists(false), m_pos(0), m_next_pos(0)
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{
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m_row.trx_committed= NULL;
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}
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table_replication_group_member_stats::~table_replication_group_member_stats()
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{
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if (m_row.trx_committed != NULL)
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{
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my_free(m_row.trx_committed);
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m_row.trx_committed= NULL;
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}
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}
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void table_replication_group_member_stats::reset_position(void)
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{
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m_pos.m_index= 0;
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m_next_pos.m_index= 0;
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}
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ha_rows table_replication_group_member_stats::get_row_count()
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{
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uint row_count= 0;
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if (is_group_replication_plugin_loaded())
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row_count= 1;
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return row_count;
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}
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int table_replication_group_member_stats::rnd_next(void)
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{
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if (!is_group_replication_plugin_loaded())
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return HA_ERR_END_OF_FILE;
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m_pos.set_at(&m_next_pos);
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if (m_pos.m_index == 0)
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{
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make_row();
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m_next_pos.set_after(&m_pos);
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return 0;
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}
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return HA_ERR_END_OF_FILE;
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}
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int table_replication_group_member_stats::rnd_pos(const void *pos)
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{
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if (get_row_count() == 0)
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return HA_ERR_END_OF_FILE;
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set_position(pos);
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assert(m_pos.m_index < 1);
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make_row();
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return 0;
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}
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void table_replication_group_member_stats::make_row()
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{
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DBUG_ENTER("table_replication_group_member_stats::make_row");
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// Set default values.
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m_row_exists= false;
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m_row.channel_name_length= 0;
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m_row.view_id_length= 0;
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m_row.member_id_length= 0;
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m_row.trx_committed_length= 0;
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m_row.last_cert_trx_length= 0;
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m_row.trx_in_queue= 0;
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m_row.trx_checked= 0;
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m_row.trx_conflicts= 0;
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m_row.trx_rows_validating= 0;
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// Set callbacks on GROUP_REPLICATION_GROUP_MEMBER_STATS_CALLBACKS.
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const GROUP_REPLICATION_GROUP_MEMBER_STATS_CALLBACKS callbacks=
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{
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&m_row,
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&set_channel_name,
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&set_view_id,
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&set_member_id,
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&set_transactions_committed,
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&set_last_conflict_free_transaction,
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&set_transactions_in_queue,
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&set_transactions_certified,
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&set_transactions_conflicts_detected,
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&set_transactions_rows_in_validation,
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};
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// Query plugin and let callbacks do their job.
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if (get_group_replication_group_member_stats_info(callbacks))
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{
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DBUG_PRINT("info", ("Group Replication stats not available!"));
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}
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else
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{
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m_row_exists= true;
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}
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DBUG_VOID_RETURN;
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}
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int table_replication_group_member_stats::read_row_values(TABLE *table,
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unsigned char *buf,
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Field **fields,
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bool read_all)
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{
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Field *f;
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if (unlikely(! m_row_exists))
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return HA_ERR_RECORD_DELETED;
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assert(table->s->null_bytes == 0);
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buf[0]= 0;
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for (; (f= *fields) ; fields++)
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{
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if (read_all || bitmap_is_set(table->read_set, f->field_index))
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{
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switch(f->field_index)
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{
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case 0: /** channel_name */
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set_field_char_utf8(f, m_row.channel_name,
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m_row.channel_name_length);
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break;
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case 1: /** view id */
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set_field_char_utf8(f, m_row.view_id, m_row.view_id_length);
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break;
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case 2: /** member_id */
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set_field_char_utf8(f, m_row.member_id, m_row.member_id_length);
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break;
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case 3: /** transaction_in_queue */
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set_field_ulonglong(f, m_row.trx_in_queue);
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break;
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case 4: /** transactions_certified */
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set_field_ulonglong(f, m_row.trx_checked);
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break;
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case 5: /** negatively_certified_transaction */
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set_field_ulonglong(f, m_row.trx_conflicts);
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break;
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case 6: /** certification_db_size */
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set_field_ulonglong(f, m_row.trx_rows_validating);
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break;
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case 7: /** stable_set */
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set_field_longtext_utf8(f, m_row.trx_committed,
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m_row.trx_committed_length);
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break;
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case 8: /** last_certified_transaction */
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set_field_longtext_utf8(f, m_row.last_cert_trx,
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m_row.last_cert_trx_length);
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break;
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default:
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assert(false);
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}
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}
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}
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return 0;
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}
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