mirror of https://github.com/citusdata/citus.git
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* commit_protocol.h
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* Type and function declarations used in performing transactions across
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* shard placements.
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*
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* Copyright (c) 2016, Citus Data, Inc.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef COMMIT_PROTOCOL_H
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#define COMMIT_PROTOCOL_H
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#include "access/xact.h"
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#include "distributed/connection_management.h"
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#include "libpq-fe.h"
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#include "lib/stringinfo.h"
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#include "nodes/pg_list.h"
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/* Enumeration that defines different remote transaction states */
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typedef enum
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{
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TRANSACTION_STATE_INVALID = 0,
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TRANSACTION_STATE_OPEN,
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TRANSACTION_STATE_COPY_STARTED,
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TRANSACTION_STATE_PREPARED,
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TRANSACTION_STATE_CLOSED
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} TransactionState;
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/*
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* TransactionConnection represents a connection to a remote node which is
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* used to perform a transaction on shard placements.
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*/
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typedef struct TransactionConnection
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{
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int64 connectionId;
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TransactionState transactionState;
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PGconn *connection;
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} TransactionConnection;
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/* Functions declarations for transaction and connection management */
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extern void InitializeDistributedTransaction(void);
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extern void PrepareRemoteTransactions(List *connectionList);
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extern void AbortRemoteTransactions(List *connectionList);
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extern void CommitRemoteTransactions(List *connectionList, bool stopOnFailure);
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#endif /* COMMIT_PROTOCOL_H */
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