mirror of https://github.com/citusdata/citus.git
73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*-------------------------------------------------------------------------
|
|
* placement_connection.h
|
|
*
|
|
* Copyright (c) 2016, Citus Data, Inc.
|
|
*
|
|
*-------------------------------------------------------------------------
|
|
*/
|
|
|
|
#ifndef PLACEMENT_CONNECTION_H
|
|
#define PLACEMENT_CONNECTION_H
|
|
|
|
|
|
#include "distributed/connection_management.h"
|
|
|
|
/* forward declare, to avoid dependency on ShardPlacement definition */
|
|
struct ShardPlacement;
|
|
|
|
/* represents the way in which a placement is accessed */
|
|
typedef enum ShardPlacementAccessType
|
|
{
|
|
/* read from placement */
|
|
PLACEMENT_ACCESS_SELECT,
|
|
|
|
/* modify rows in placement */
|
|
PLACEMENT_ACCESS_DML,
|
|
|
|
/* modify placement schema */
|
|
PLACEMENT_ACCESS_DDL
|
|
} ShardPlacementAccessType;
|
|
|
|
/* represents access to a placement */
|
|
typedef struct ShardPlacementAccess
|
|
{
|
|
/* placement that is accessed */
|
|
struct ShardPlacement *placement;
|
|
|
|
/* the way in which the placement is accessed */
|
|
ShardPlacementAccessType accessType;
|
|
} ShardPlacementAccess;
|
|
|
|
|
|
extern MultiConnection * GetPlacementConnection(uint32 flags,
|
|
struct ShardPlacement *placement,
|
|
const char *userName);
|
|
extern MultiConnection * StartPlacementConnection(uint32 flags,
|
|
struct ShardPlacement *placement,
|
|
const char *userName);
|
|
|
|
extern MultiConnection * GetConnectionIfPlacementAccessedInXact(int flags,
|
|
List *placementAccessList,
|
|
const char *userName);
|
|
extern MultiConnection * GetPlacementListConnection(uint32 flags,
|
|
List *placementAccessList,
|
|
const char *userName);
|
|
extern MultiConnection * StartPlacementListConnection(uint32 flags,
|
|
List *placementAccessList,
|
|
const char *userName);
|
|
extern ShardPlacementAccess * CreatePlacementAccess(ShardPlacement *placement,
|
|
ShardPlacementAccessType accessType);
|
|
|
|
extern void ResetPlacementConnectionManagement(void);
|
|
extern void MarkFailedShardPlacements(void);
|
|
extern void PostCommitMarkFailedShardPlacements(bool using2PC);
|
|
|
|
extern void CloseShardPlacementAssociation(struct MultiConnection *connection);
|
|
extern void ResetShardPlacementAssociation(struct MultiConnection *connection);
|
|
|
|
extern void InitPlacementConnectionManagement(void);
|
|
|
|
extern bool ConnectionUsedForAnyPlacements(MultiConnection *connection);
|
|
|
|
#endif /* PLACEMENT_CONNECTION_H */
|