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/*-------------------------------------------------------------------------
*
* gtm_msg.h
*
*
* Portions Copyright (c) 2012-2014, TransLattice, Inc.
* Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
* Portions Copyright (c) 2010-2012 Postgres-XC Development Group
*
* $PostgreSQL$
*
*-------------------------------------------------------------------------
*/
#ifndef GTM_MSG_H
#define GTM_MSG_H
/*
* The following enum symbols are also used in message_name_tab structure
* in gtm_utils.c. Modification of the following enum should reflect
* changes to message_name_tab structure as well.
*/
typedef enum GTM_MessageType
{
MSG_TYPE_INVALID,
MSG_SYNC_STANDBY, /* Message to sync woth GTM-Standby */
MSG_NODE_REGISTER, /* Register a PGXC Node with GTM */
MSG_BKUP_NODE_REGISTER, /* Backup of MSG_NODE_REGISTER */
MSG_NODE_UNREGISTER, /* Unregister a PGXC Node with GTM */
MSG_BKUP_NODE_UNREGISTER, /* Backup of MSG_NODE_UNREGISTER */
MSG_REGISTER_SESSION, /* Register distributed session with GTM */
MSG_REPORT_XMIN, /* Report RecentGlobalXmin to GTM */
MSG_BKUP_REPORT_XMIN,
MSG_NODE_LIST, /* Get node list */
MSG_NODE_BEGIN_REPLICATION_INIT,
MSG_NODE_END_REPLICATION_INIT,
MSG_BEGIN_BACKUP, /* Start backup by Standby */
MSG_END_BACKUP, /* End backup preparation by Standby */
MSG_TXN_BEGIN, /* Start a new transaction */
MSG_BKUP_TXN_BEGIN, /* Backup of MSG_TXN_BEGIN */
MSG_TXN_BEGIN_GETGXID, /* Start a new transaction and get GXID */
MSG_BKUP_TXN_BEGIN_GETGXID, /* Backup of MSG_TXN_BEGIN_GETGXID */
MSG_TXN_BEGIN_GETGXID_MULTI, /* Start multiple new transactions and get GXIDs */
MSG_BKUP_TXN_BEGIN_GETGXID_MULTI, /* Backup of MSG_TXN_BEGIN_GETGXID_MULTI */
MSG_TXN_START_PREPARED, /* Begins to prepare a transation for commit */
MSG_BKUP_TXN_START_PREPARED, /* Backup of MSG_TXN_START_PREPARED */
MSG_TXN_COMMIT, /* Commit a running or prepared transaction */
MSG_BKUP_TXN_COMMIT, /* Backup of MSG_TXN_COMMIT */
MSG_TXN_COMMIT_MULTI, /* Commit multiple running or prepared transactions */
MSG_BKUP_TXN_COMMIT_MULTI, /* Bacukp of MSG_TXN_COMMIT_MULTI */
MSG_TXN_COMMIT_PREPARED, /* Commit a prepared transaction */
MSG_BKUP_TXN_COMMIT_PREPARED, /* Backup of MSG_TXN_COMMIT_PREPARED */
MSG_TXN_PREPARE, /* Finish preparing a transaction */
MSG_BKUP_TXN_PREPARE, /* Backup of MSG_TXN_PREPARE */
MSG_TXN_ROLLBACK, /* Rollback a transaction */
MSG_BKUP_TXN_ROLLBACK, /* Backup of MSG_TXN_ROLLBACK */
MSG_TXN_ROLLBACK_MULTI, /* Rollback multiple transactions */
MSG_BKUP_TXN_ROLLBACK_MULTI, /* Backup of MSG_TXN_ROLLBACK_MULTI */
MSG_TXN_GET_GID_DATA, /* Get info associated with a GID, and get a GXID */
MSG_TXN_GET_GXID, /* Get a GXID for a transaction */
MSG_BKUP_TXN_GET_GXID,
MSG_TXN_GET_NEXT_GXID, /* Get next GXID */
MSG_TXN_GXID_LIST,
MSG_SNAPSHOT_GET, /* Get a global snapshot */
MSG_SNAPSHOT_GET_MULTI, /* Get multiple global snapshots */
MSG_SNAPSHOT_GXID_GET, /* Get GXID and snapshot together */
MSG_SEQUENCE_INIT, /* Initialize a new global sequence */
MSG_BKUP_SEQUENCE_INIT, /* Backup of MSG_SEQUENCE_INIT */
MSG_SEQUENCE_GET_CURRENT,/* Get the current value of sequence */
MSG_SEQUENCE_GET_NEXT, /* Get the next sequence value of sequence */
MSG_BKUP_SEQUENCE_GET_NEXT, /* Backup of MSG_SEQUENCE_GET_NEXT */
MSG_SEQUENCE_GET_LAST, /* Get the last sequence value of sequence */
MSG_SEQUENCE_SET_VAL, /* Set values for sequence */
MSG_BKUP_SEQUENCE_SET_VAL, /* Backup of MSG_SEQUENCE_SET_VAL */
MSG_SEQUENCE_RESET, /* Reset the sequence */
MSG_BKUP_SEQUENCE_RESET, /* Backup of MSG_SEQUENCE_RESET */
MSG_SEQUENCE_CLOSE, /* Close a previously inited sequence */
MSG_BKUP_SEQUENCE_CLOSE, /* Backup of MSG_SEQUENCE_CLOSE */
MSG_SEQUENCE_RENAME, /* Rename a sequence */
MSG_BKUP_SEQUENCE_RENAME, /* Backup of MSG_SEQUENCE_RENAME */
MSG_SEQUENCE_ALTER, /* Alter a sequence */
MSG_BKUP_SEQUENCE_ALTER, /* Backup of MSG_SEQUENCE_ALTER */
MSG_SEQUENCE_LIST, /* Get a list of sequences */
MSG_TXN_GET_STATUS, /* Get status of a given transaction */
MSG_TXN_GET_ALL_PREPARED, /* Get information about all outstanding
* prepared transactions */
MSG_TXN_BEGIN_GETGXID_AUTOVACUUM, /* Start a new transaction and get GXID for autovacuum */
MSG_BKUP_TXN_BEGIN_GETGXID_AUTOVACUUM, /* Backup of MSG_TXN_BEGIN_GETGXID_AUTOVACUUM */
MSG_DATA_FLUSH, /* flush pending data */
MSG_BACKEND_DISCONNECT, /* tell GTM that the backend diconnected from the proxy */
MSG_BARRIER, /* Tell the barrier was issued */
MSG_BKUP_BARRIER, /* Backup barrier to standby */
/*
* Must be at the end
*/
MSG_TYPE_COUNT /* A dummmy entry just to count the message types */
} GTM_MessageType;
/*
* Symbols in the following enum are usd in result_name_tab defined in gtm_utils.c.
* Modifictaion to the following enum should be reflected to result_name_tab as well.
*/
typedef enum GTM_ResultType
{
SYNC_STANDBY_RESULT,
NODE_REGISTER_RESULT,
NODE_UNREGISTER_RESULT,
REGISTER_SESSION_RESULT,
REPORT_XMIN_RESULT,
NODE_LIST_RESULT,
NODE_BEGIN_REPLICATION_INIT_RESULT,
NODE_END_REPLICATION_INIT_RESULT,
BEGIN_BACKUP_RESULT,
END_BACKUP_RESULT,
TXN_BEGIN_RESULT,
TXN_BEGIN_GETGXID_RESULT,
TXN_BEGIN_GETGXID_MULTI_RESULT,
TXN_PREPARE_RESULT,
TXN_START_PREPARED_RESULT,
TXN_COMMIT_PREPARED_RESULT,
TXN_COMMIT_RESULT,
TXN_COMMIT_MULTI_RESULT,
TXN_ROLLBACK_RESULT,
TXN_ROLLBACK_MULTI_RESULT,
TXN_GET_GID_DATA_RESULT,
TXN_GET_GXID_RESULT,
TXN_GET_NEXT_GXID_RESULT,
TXN_GXID_LIST_RESULT,
SNAPSHOT_GET_RESULT,
SNAPSHOT_GET_MULTI_RESULT,
SNAPSHOT_GXID_GET_RESULT,
SEQUENCE_INIT_RESULT,
SEQUENCE_GET_CURRENT_RESULT,
SEQUENCE_GET_NEXT_RESULT,
SEQUENCE_GET_LAST_RESULT,
SEQUENCE_SET_VAL_RESULT,
SEQUENCE_RESET_RESULT,
SEQUENCE_CLOSE_RESULT,
SEQUENCE_RENAME_RESULT,
SEQUENCE_ALTER_RESULT,
SEQUENCE_LIST_RESULT,
TXN_GET_STATUS_RESULT,
TXN_GET_ALL_PREPARED_RESULT,
TXN_BEGIN_GETGXID_AUTOVACUUM_RESULT,
BARRIER_RESULT,
RESULT_TYPE_COUNT
} GTM_ResultType;
/*
* Special message header for the messgaes exchanged between the GTM server and
* the proxy.
*
* ph_conid: connection identifier which is used to route
* the messages to the right backend.
*/
typedef struct GTM_ProxyMsgHeader
{
GTMProxy_ConnID ph_conid;
} GTM_ProxyMsgHeader;
#endif
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