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pglogical_apply_heap.c
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pglogical_apply_heap.c
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/*-------------------------------------------------------------------------
*
* pglogical_apply_heap.c
* pglogical apply functions using heap api
*
* Copyright (c) 2015, PostgreSQL Global Development Group
*
* IDENTIFICATION
* pglogical_apply_heap.c
*
*-------------------------------------------------------------------------
*/
#include "postgres.h"
#include "miscadmin.h"
#include "libpq-fe.h"
#include "pgstat.h"
#include "access/htup_details.h"
#include "access/xact.h"
#include "catalog/namespace.h"
#include "commands/dbcommands.h"
#include "commands/sequence.h"
#include "commands/tablecmds.h"
#include "commands/trigger.h"
#include "executor/executor.h"
#include "libpq/pqformat.h"
#include "mb/pg_wchar.h"
#include "nodes/makefuncs.h"
#include "nodes/parsenodes.h"
#include "optimizer/clauses.h"
#if PG_VERSION_NUM >= 120000
#include "optimizer/optimizer.h"
#else
#include "optimizer/planner.h"
#endif
#include "replication/origin.h"
#include "replication/reorderbuffer.h"
#include "rewrite/rewriteHandler.h"
#include "storage/ipc.h"
#include "storage/lmgr.h"
#include "storage/proc.h"
#include "tcop/pquery.h"
#include "tcop/utility.h"
#include "utils/builtins.h"
#include "utils/jsonb.h"
#include "utils/lsyscache.h"
#include "utils/memutils.h"
#include "utils/snapmgr.h"
#include "pglogical_conflict.h"
#include "pglogical_executor.h"
#include "pglogical_node.h"
#include "pglogical_proto_native.h"
#include "pglogical_queue.h"
#include "pglogical_relcache.h"
#include "pglogical_repset.h"
#include "pglogical_rpc.h"
#include "pglogical_sync.h"
#include "pglogical_worker.h"
#include "pglogical_apply_heap.h"
typedef struct ApplyExecState {
EState *estate;
EPQState epqstate;
ResultRelInfo *resultRelInfo;
TupleTableSlot *slot;
} ApplyExecState;
/* State related to bulk insert */
typedef struct ApplyMIState
{
PGLogicalRelation *rel;
ApplyExecState *aestate;
CommandId cid;
BulkInsertState bistate;
#if PG_VERSION_NUM >= 120000
TupleTableSlot **buffered_tuples;
#else
HeapTuple *buffered_tuples;
#endif
int maxbuffered_tuples;
int nbuffered_tuples;
} ApplyMIState;
#if PG_VERSION_NUM >= 120000
#define TTS_TUP(slot) (((HeapTupleTableSlot *)slot)->tuple)
#else
#define TTS_TUP(slot) (slot->tts_tuple)
#endif
static ApplyMIState *pglmistate = NULL;
void
pglogical_apply_heap_begin(void)
{
}
void
pglogical_apply_heap_commit(void)
{
}
static List *
UserTableUpdateOpenIndexes(ResultRelInfo *relinfo, EState *estate, TupleTableSlot *slot, bool update)
{
List *recheckIndexes = NIL;
if (relinfo->ri_NumIndices > 0)
{
recheckIndexes = ExecInsertIndexTuples(
#if PG_VERSION_NUM >= 140000
relinfo,
#endif
slot,
#if PG_VERSION_NUM < 120000
&slot->tts_tuple->t_self,
#endif
estate
#if PG_VERSION_NUM >= 140000
, update
#endif
#if PG_VERSION_NUM >= 90500
, false, NULL, NIL
#endif
);
/* FIXME: recheck the indexes */
if (recheckIndexes != NIL)
{
StringInfoData si;
ListCell *lc;
const char *idxname, *relname, *nspname;
Relation target_rel = relinfo->ri_RelationDesc;
relname = RelationGetRelationName(target_rel);
nspname = get_namespace_name(RelationGetNamespace(target_rel));
initStringInfo(&si);
foreach (lc, recheckIndexes)
{
Oid idxoid = lfirst_oid(lc);
idxname = get_rel_name(idxoid);
if (idxname == NULL)
elog(ERROR, "cache lookup failed for index oid %u", idxoid);
if (si.len > 0)
appendStringInfoString(&si, ", ");
appendStringInfoString(&si, quote_identifier(idxname));
}
ereport(ERROR,
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("pglogical doesn't support deferrable indexes"),
errdetail("relation %s.%s has deferrable indexes: %s",
quote_identifier(nspname),
quote_identifier(relname),
si.data)));
}
list_free(recheckIndexes);
}
return recheckIndexes;
}
static bool
physatt_in_attmap(PGLogicalRelation *rel, int attid)
{
AttrNumber i;
for (i = 0; i < rel->natts; i++)
if (rel->attmap[i] == attid)
return true;
return false;
}
/*
* Executes default values for columns for which we didn't get any data.
*
* TODO: this needs caching, it's not exactly fast.
*/
static void
fill_missing_defaults(PGLogicalRelation *rel, EState *estate,
PGLogicalTupleData *tuple)
{
TupleDesc desc = RelationGetDescr(rel->rel);
AttrNumber num_phys_attrs = desc->natts;
int i;
AttrNumber attnum,
num_defaults = 0;
int *defmap;
ExprState **defexprs;
ExprContext *econtext;
econtext = GetPerTupleExprContext(estate);
/* We got all the data via replication, no need to evaluate anything. */
if (num_phys_attrs == rel->natts)
return;
defmap = (int *) palloc(num_phys_attrs * sizeof(int));
defexprs = (ExprState **) palloc(num_phys_attrs * sizeof(ExprState *));
for (attnum = 0; attnum < num_phys_attrs; attnum++)
{
Expr *defexpr;
if (TupleDescAttr(desc,attnum)->attisdropped)
continue;
if (physatt_in_attmap(rel, attnum))
continue;
defexpr = (Expr *) build_column_default(rel->rel, attnum + 1);
if (defexpr != NULL)
{
/* Run the expression through planner */
defexpr = expression_planner(defexpr);
/* Initialize executable expression in copycontext */
defexprs[num_defaults] = ExecInitExpr(defexpr, NULL);
defmap[num_defaults] = attnum;
num_defaults++;
}
}
for (i = 0; i < num_defaults; i++)
tuple->values[defmap[i]] = ExecEvalExpr(defexprs[i],
econtext,
&tuple->nulls[defmap[i]],
NULL);
}
static ApplyExecState *
init_apply_exec_state(PGLogicalRelation *rel)
{
ApplyExecState *aestate = palloc0(sizeof(ApplyExecState));
/* Initialize the executor state. */
aestate->estate = create_estate_for_relation(rel->rel, true);
aestate->resultRelInfo = makeNode(ResultRelInfo);
InitResultRelInfo(aestate->resultRelInfo, rel->rel, 1, 0);
#if PG_VERSION_NUM < 140000
aestate->estate->es_result_relations = aestate->resultRelInfo;
aestate->estate->es_num_result_relations = 1;
aestate->estate->es_result_relation_info = aestate->resultRelInfo;
#endif
aestate->slot = ExecInitExtraTupleSlot(aestate->estate);
ExecSetSlotDescriptor(aestate->slot, RelationGetDescr(rel->rel));
if (aestate->resultRelInfo->ri_TrigDesc)
EvalPlanQualInit(&aestate->epqstate, aestate->estate, NULL, NIL, -1);
/* Prepare to catch AFTER triggers. */
AfterTriggerBeginQuery();
return aestate;
}
static void
finish_apply_exec_state(ApplyExecState *aestate)
{
/* Close indexes */
ExecCloseIndices(aestate->resultRelInfo);
/* Handle queued AFTER triggers. */
AfterTriggerEndQuery(aestate->estate);
/* Terminate EPQ execution if active. */
if (aestate->resultRelInfo->ri_TrigDesc)
EvalPlanQualEnd(&aestate->epqstate);
/* Cleanup tuple table. */
ExecResetTupleTable(aestate->estate->es_tupleTable, true);
/* Free the memory. */
FreeExecutorState(aestate->estate);
pfree(aestate);
}
/*
* Handle insert via low level api.
*/
void
pglogical_apply_heap_insert(PGLogicalRelation *rel, PGLogicalTupleData *newtup)
{
ApplyExecState *aestate;
Oid conflicts_idx_id;
TupleTableSlot *localslot;
HeapTuple remotetuple;
HeapTuple applytuple;
PGLogicalConflictResolution resolution;
List *recheckIndexes = NIL;
MemoryContext oldctx;
bool has_before_triggers = false;
/* Initialize the executor state. */
aestate = init_apply_exec_state(rel);
#if PG_VERSION_NUM >= 120000
localslot = table_slot_create(rel->rel, &aestate->estate->es_tupleTable);
#else
localslot = ExecInitExtraTupleSlot(aestate->estate);
ExecSetSlotDescriptor(localslot, RelationGetDescr(rel->rel));
#endif
ExecOpenIndices(aestate->resultRelInfo
#if PG_VERSION_NUM >= 90500
, false
#endif
);
/*
* Check for existing tuple with same key in any unique index containing
* only normal columns. This doesn't just check the replica identity index,
* but it'll prefer it and use it first.
*/
conflicts_idx_id = pglogical_tuple_find_conflict(aestate->resultRelInfo,
newtup,
localslot);
/* Process and store remote tuple in the slot */
oldctx = MemoryContextSwitchTo(GetPerTupleMemoryContext(aestate->estate));
fill_missing_defaults(rel, aestate->estate, newtup);
remotetuple = heap_form_tuple(RelationGetDescr(rel->rel),
newtup->values, newtup->nulls);
MemoryContextSwitchTo(oldctx);
ExecStoreHeapTuple(remotetuple, aestate->slot, true);
if (aestate->resultRelInfo->ri_TrigDesc &&
aestate->resultRelInfo->ri_TrigDesc->trig_insert_before_row)
{
has_before_triggers = true;
#if PG_VERSION_NUM >= 120000
if (!ExecBRInsertTriggers(aestate->estate,
aestate->resultRelInfo,
aestate->slot))
#else
aestate->slot = ExecBRInsertTriggers(aestate->estate,
aestate->resultRelInfo,
aestate->slot);
if (aestate->slot == NULL) /* "do nothing" */
#endif
{
finish_apply_exec_state(aestate);
return;
}
}
/* trigger might have changed tuple */
#if PG_VERSION_NUM >= 120000
remotetuple = ExecFetchSlotHeapTuple(aestate->slot, true, NULL);
#else
remotetuple = ExecMaterializeSlot(aestate->slot);
#endif
/* Did we find matching key in any candidate-key index? */
if (OidIsValid(conflicts_idx_id))
{
TransactionId xmin;
TimestampTz local_ts;
RepOriginId local_origin;
bool apply;
bool local_origin_found;
local_origin_found = get_tuple_origin(TTS_TUP(localslot), &xmin,
&local_origin, &local_ts);
/* Tuple already exists, try resolving conflict. */
apply = try_resolve_conflict(rel->rel, TTS_TUP(localslot),
remotetuple, &applytuple,
&resolution);
pglogical_report_conflict(CONFLICT_INSERT_INSERT, rel,
TTS_TUP(localslot), NULL, remotetuple,
applytuple, resolution, xmin,
local_origin_found, local_origin,
local_ts, conflicts_idx_id,
has_before_triggers);
if (apply)
{
#if PG_VERSION_NUM >= 160000
TU_UpdateIndexes update_indexes;
#elif PG_VERSION_NUM >= 120000
bool update_indexes;
#endif
if (applytuple != remotetuple)
ExecStoreHeapTuple(applytuple, aestate->slot, false);
if (aestate->resultRelInfo->ri_TrigDesc &&
aestate->resultRelInfo->ri_TrigDesc->trig_update_before_row)
{
#if PG_VERSION_NUM >= 120000
if (!ExecBRUpdateTriggers(aestate->estate,
&aestate->epqstate,
aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL,
aestate->slot))
#else
aestate->slot = ExecBRUpdateTriggers(aestate->estate,
&aestate->epqstate,
aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL,
aestate->slot);
if (aestate->slot == NULL) /* "do nothing" */
#endif
{
finish_apply_exec_state(aestate);
return;
}
}
/* trigger might have changed tuple */
#if PG_VERSION_NUM >= 120000
remotetuple = ExecFetchSlotHeapTuple(aestate->slot, true, NULL);
#else
remotetuple = ExecMaterializeSlot(aestate->slot);
#endif
/* Check the constraints of the tuple */
if (rel->rel->rd_att->constr)
ExecConstraints(aestate->resultRelInfo, aestate->slot,
aestate->estate);
#if PG_VERSION_NUM >= 120000
simple_table_tuple_update(rel->rel,
&(localslot->tts_tid),
aestate->slot,
aestate->estate->es_snapshot,
&update_indexes);
if (update_indexes)
#else
simple_heap_update(rel->rel, &(TTS_TUP(localslot)->t_self),
TTS_TUP(aestate->slot));
if (!HeapTupleIsHeapOnly(TTS_TUP(aestate->slot)))
#endif
recheckIndexes = UserTableUpdateOpenIndexes(aestate->resultRelInfo,
aestate->estate,
aestate->slot,
true);
/* AFTER ROW UPDATE Triggers */
#if PG_VERSION_NUM >= 120000
ExecARUpdateTriggers(aestate->estate, aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, aestate->slot, recheckIndexes);
#else
ExecARUpdateTriggers(aestate->estate, aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, applytuple, recheckIndexes);
#endif
}
}
else
{
/* Check the constraints of the tuple */
if (rel->rel->rd_att->constr)
ExecConstraints(aestate->resultRelInfo, aestate->slot,
aestate->estate);
#if PG_VERSION_NUM >= 120000
simple_table_tuple_insert(aestate->resultRelInfo->ri_RelationDesc, aestate->slot);
#else
simple_heap_insert(rel->rel, TTS_TUP(aestate->slot));
#endif
UserTableUpdateOpenIndexes(aestate->resultRelInfo, aestate->estate, aestate->slot, false);
/* AFTER ROW INSERT Triggers */
#if PG_VERSION_NUM >= 120000
ExecARInsertTriggers(aestate->estate, aestate->resultRelInfo,
aestate->slot, recheckIndexes);
#else
ExecARInsertTriggers(aestate->estate, aestate->resultRelInfo,
remotetuple, recheckIndexes);
#endif
}
finish_apply_exec_state(aestate);
CommandCounterIncrement();
}
/*
* Handle update via low level api.
*/
void
pglogical_apply_heap_update(PGLogicalRelation *rel, PGLogicalTupleData *oldtup,
PGLogicalTupleData *newtup)
{
ApplyExecState *aestate;
bool found;
TupleTableSlot *localslot;
HeapTuple remotetuple;
List *recheckIndexes = NIL;
MemoryContext oldctx;
Oid replident_idx_id;
bool has_before_triggers = false;
/* Initialize the executor state. */
aestate = init_apply_exec_state(rel);
#if PG_VERSION_NUM >= 120000
localslot = table_slot_create(rel->rel, &aestate->estate->es_tupleTable);
#else
localslot = ExecInitExtraTupleSlot(aestate->estate);
ExecSetSlotDescriptor(localslot, RelationGetDescr(rel->rel));
#endif
/* Search for existing tuple with same key */
found = pglogical_tuple_find_replidx(aestate->resultRelInfo, oldtup, localslot,
&replident_idx_id);
/*
* Tuple found, update the local tuple.
*
* Note this will fail if there are other unique indexes and one or more of
* them would be violated by the new tuple.
*/
if (found)
{
TransactionId xmin;
TimestampTz local_ts;
RepOriginId local_origin;
bool local_origin_found;
bool apply;
HeapTuple applytuple;
/* Process and store remote tuple in the slot */
oldctx = MemoryContextSwitchTo(GetPerTupleMemoryContext(aestate->estate));
fill_missing_defaults(rel, aestate->estate, newtup);
remotetuple = heap_modify_tuple(TTS_TUP(localslot),
RelationGetDescr(rel->rel),
newtup->values,
newtup->nulls,
newtup->changed);
MemoryContextSwitchTo(oldctx);
ExecStoreHeapTuple(remotetuple, aestate->slot, true);
if (aestate->resultRelInfo->ri_TrigDesc &&
aestate->resultRelInfo->ri_TrigDesc->trig_update_before_row)
{
has_before_triggers = true;
#if PG_VERSION_NUM >= 120000
if (!ExecBRUpdateTriggers(aestate->estate,
&aestate->epqstate,
aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, aestate->slot))
#else
aestate->slot = ExecBRUpdateTriggers(aestate->estate,
&aestate->epqstate,
aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, aestate->slot);
if (aestate->slot == NULL) /* "do nothing" */
#endif
{
finish_apply_exec_state(aestate);
return;
}
}
/* trigger might have changed tuple */
#if PG_VERSION_NUM >= 120000
remotetuple = ExecFetchSlotHeapTuple(aestate->slot, true, NULL);
#else
remotetuple = ExecMaterializeSlot(aestate->slot);
#endif
local_origin_found = get_tuple_origin(TTS_TUP(localslot), &xmin,
&local_origin, &local_ts);
/*
* If the local tuple was previously updated by different transaction
* on different server, consider this to be conflict and resolve it.
*/
if (local_origin_found &&
xmin != GetTopTransactionId() &&
local_origin != replorigin_session_origin)
{
PGLogicalConflictResolution resolution;
apply = try_resolve_conflict(rel->rel, TTS_TUP(localslot),
remotetuple, &applytuple,
&resolution);
pglogical_report_conflict(CONFLICT_UPDATE_UPDATE, rel,
TTS_TUP(localslot), oldtup,
remotetuple, applytuple, resolution,
xmin, local_origin_found, local_origin,
local_ts, replident_idx_id,
has_before_triggers);
if (applytuple != remotetuple)
ExecStoreHeapTuple(applytuple, aestate->slot, false);
}
else
{
apply = true;
applytuple = remotetuple;
}
if (apply)
{
#if PG_VERSION_NUM >= 160000
TU_UpdateIndexes update_indexes;
#elif PG_VERSION_NUM >= 120000
bool update_indexes;
#endif
/* Check the constraints of the tuple */
if (rel->rel->rd_att->constr)
ExecConstraints(aestate->resultRelInfo, aestate->slot,
aestate->estate);
#if PG_VERSION_NUM >= 120000
simple_table_tuple_update(rel->rel,
&(localslot->tts_tid),
aestate->slot,
aestate->estate->es_snapshot,
&update_indexes);
if (update_indexes)
#else
simple_heap_update(rel->rel, &(TTS_TUP(localslot)->t_self),
TTS_TUP(aestate->slot));
/* Only update indexes if it's not HOT update. */
if (!HeapTupleIsHeapOnly(TTS_TUP(aestate->slot)))
#endif
{
ExecOpenIndices(aestate->resultRelInfo
#if PG_VERSION_NUM >= 90500
, false
#endif
);
recheckIndexes = UserTableUpdateOpenIndexes(aestate->resultRelInfo,
aestate->estate,
aestate->slot,
true);
}
/* AFTER ROW UPDATE Triggers */
#if PG_VERSION_NUM >= 120000
ExecARUpdateTriggers(aestate->estate, aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, aestate->slot, recheckIndexes);
#else
ExecARUpdateTriggers(aestate->estate, aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL, applytuple, recheckIndexes);
#endif
}
}
else
{
/*
* The tuple to be updated could not be found.
*
* We can't do INSERT here because we might not have whole tuple.
*/
remotetuple = heap_form_tuple(RelationGetDescr(rel->rel),
newtup->values,
newtup->nulls);
pglogical_report_conflict(CONFLICT_UPDATE_DELETE, rel, NULL, oldtup,
remotetuple, NULL, PGLogicalResolution_Skip,
InvalidTransactionId, false,
InvalidRepOriginId, (TimestampTz)0,
replident_idx_id, has_before_triggers);
}
/* Cleanup. */
finish_apply_exec_state(aestate);
CommandCounterIncrement();
}
/*
* Handle delete via low level api.
*/
void
pglogical_apply_heap_delete(PGLogicalRelation *rel, PGLogicalTupleData *oldtup)
{
ApplyExecState *aestate;
TupleTableSlot *localslot;
Oid replident_idx_id;
bool has_before_triggers = false;
/* Initialize the executor state. */
aestate = init_apply_exec_state(rel);
#if PG_VERSION_NUM >= 120000
localslot = table_slot_create(rel->rel, &aestate->estate->es_tupleTable);
#else
localslot = ExecInitExtraTupleSlot(aestate->estate);
ExecSetSlotDescriptor(localslot, RelationGetDescr(rel->rel));
#endif
if (pglogical_tuple_find_replidx(aestate->resultRelInfo, oldtup, localslot,
&replident_idx_id))
{
if (aestate->resultRelInfo->ri_TrigDesc &&
aestate->resultRelInfo->ri_TrigDesc->trig_delete_before_row)
{
bool dodelete = ExecBRDeleteTriggers(aestate->estate,
&aestate->epqstate,
aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self),
NULL);
has_before_triggers = true;
if (!dodelete) /* "do nothing" */
{
finish_apply_exec_state(aestate);
return;
}
}
/* Tuple found, delete it. */
simple_heap_delete(rel->rel, &(TTS_TUP(localslot)->t_self));
/* AFTER ROW DELETE Triggers */
ExecARDeleteTriggers(aestate->estate, aestate->resultRelInfo,
&(TTS_TUP(localslot)->t_self), NULL);
}
else
{
/* The tuple to be deleted could not be found. */
HeapTuple remotetuple = heap_form_tuple(RelationGetDescr(rel->rel),
oldtup->values, oldtup->nulls);
pglogical_report_conflict(CONFLICT_DELETE_DELETE, rel, NULL, oldtup,
remotetuple, NULL, PGLogicalResolution_Skip,
InvalidTransactionId, false,
InvalidRepOriginId, (TimestampTz)0,
replident_idx_id, has_before_triggers);
}
/* Cleanup. */
finish_apply_exec_state(aestate);
CommandCounterIncrement();
}
bool
pglogical_apply_heap_can_mi(PGLogicalRelation *rel)
{
/* Multi insert is only supported when conflicts result in errors. */
return pglogical_conflict_resolver == PGLOGICAL_RESOLVE_ERROR;
}
/*
* MultiInsert initialization.
*/
static void
pglogical_apply_heap_mi_start(PGLogicalRelation *rel)
{
MemoryContext oldctx;
ApplyExecState *aestate;
ResultRelInfo *resultRelInfo;
TupleDesc desc;
bool volatile_defexprs = false;
if (pglmistate && pglmistate->rel == rel)
return;
if (pglmistate && pglmistate->rel != rel)
pglogical_apply_heap_mi_finish(pglmistate->rel);
oldctx = MemoryContextSwitchTo(TopTransactionContext);
/* Initialize new MultiInsert state. */
pglmistate = palloc0(sizeof(ApplyMIState));
pglmistate->rel = rel;
/* Initialize the executor state. */
pglmistate->aestate = aestate = init_apply_exec_state(rel);
MemoryContextSwitchTo(TopTransactionContext);
resultRelInfo = aestate->resultRelInfo;
ExecOpenIndices(resultRelInfo
#if PG_VERSION_NUM >= 90500
, false
#endif
);
/* Check if table has any volatile default expressions. */
desc = RelationGetDescr(rel->rel);
if (desc->natts != rel->natts)
{
int attnum;
for (attnum = 0; attnum < desc->natts; attnum++)
{
Expr *defexpr;
if (TupleDescAttr(desc,attnum)->attisdropped)
continue;
defexpr = (Expr *) build_column_default(rel->rel, attnum + 1);
if (defexpr != NULL)
{
/* Run the expression through planner */
defexpr = expression_planner(defexpr);
volatile_defexprs = contain_volatile_functions_not_nextval((Node *) defexpr);
if (volatile_defexprs)
break;
}
}
}
/*
* Decide if to buffer tuples based on the collected information
* about the table.
*/
if ((resultRelInfo->ri_TrigDesc != NULL &&
(resultRelInfo->ri_TrigDesc->trig_insert_before_row ||
resultRelInfo->ri_TrigDesc->trig_insert_instead_row)) ||
volatile_defexprs)
{
pglmistate->maxbuffered_tuples = 1;
}
else
{
pglmistate->maxbuffered_tuples = 1000;
}
pglmistate->cid = GetCurrentCommandId(true);
pglmistate->bistate = GetBulkInsertState();
/* Make the space for buffer. */
#if PG_VERSION_NUM >= 120000
pglmistate->buffered_tuples = palloc0(pglmistate->maxbuffered_tuples * sizeof(TupleTableSlot *));
#else
pglmistate->buffered_tuples = palloc0(pglmistate->maxbuffered_tuples * sizeof(HeapTuple));
#endif
pglmistate->nbuffered_tuples = 0;
MemoryContextSwitchTo(oldctx);
}
/* Write the buffered tuples. */
static void
pglogical_apply_heap_mi_flush(void)
{
MemoryContext oldctx;
ResultRelInfo *resultRelInfo;
int i;
if (!pglmistate || pglmistate->nbuffered_tuples == 0)
return;
oldctx = MemoryContextSwitchTo(GetPerTupleMemoryContext(pglmistate->aestate->estate));
heap_multi_insert(pglmistate->rel->rel,
pglmistate->buffered_tuples,
pglmistate->nbuffered_tuples,
pglmistate->cid,
0, /* hi_options */
pglmistate->bistate);
MemoryContextSwitchTo(oldctx);
resultRelInfo = pglmistate->aestate->resultRelInfo;
/*
* If there are any indexes, update them for all the inserted tuples, and
* run AFTER ROW INSERT triggers.
*/
if (resultRelInfo->ri_NumIndices > 0)
{
for (i = 0; i < pglmistate->nbuffered_tuples; i++)
{
List *recheckIndexes = NIL;
#if PG_VERSION_NUM < 120000
ExecStoreTuple(pglmistate->buffered_tuples[i],
pglmistate->aestate->slot,
InvalidBuffer, false);
#endif
recheckIndexes =
ExecInsertIndexTuples(
#if PG_VERSION_NUM >= 140000
resultRelInfo,
#endif
#if PG_VERSION_NUM >= 120000
pglmistate->buffered_tuples[i],
#else
pglmistate->aestate->slot,
&(pglmistate->buffered_tuples[i]->t_self),
#endif
pglmistate->aestate->estate
#if PG_VERSION_NUM >= 90500
#if PG_VERSION_NUM >= 140000
, false
#endif
, false, NULL, NIL
#endif
);
ExecARInsertTriggers(pglmistate->aestate->estate, resultRelInfo,
pglmistate->buffered_tuples[i],
recheckIndexes);
list_free(recheckIndexes);
}
}
/*
* There's no indexes, but see if we need to run AFTER ROW INSERT triggers
* anyway.
*/
else if (resultRelInfo->ri_TrigDesc != NULL &&
resultRelInfo->ri_TrigDesc->trig_insert_after_row)
{
for (i = 0; i < pglmistate->nbuffered_tuples; i++)
{
ExecARInsertTriggers(pglmistate->aestate->estate, resultRelInfo,
pglmistate->buffered_tuples[i],
NIL);
}
}
pglmistate->nbuffered_tuples = 0;
}
/* Add tuple to the MultiInsert. */
void
pglogical_apply_heap_mi_add_tuple(PGLogicalRelation *rel,
PGLogicalTupleData *tup)
{
MemoryContext oldctx;
ApplyExecState *aestate;
HeapTuple remotetuple;
TupleTableSlot *slot;
pglogical_apply_heap_mi_start(rel);
/*
* If sufficient work is pending, process that first
*/
if (pglmistate->nbuffered_tuples >= pglmistate->maxbuffered_tuples)
pglogical_apply_heap_mi_flush();
/* Process and store remote tuple in the slot */
aestate = pglmistate->aestate;
if (pglmistate->nbuffered_tuples == 0)
{
/*
* Reset the per-tuple exprcontext. We can only do this if the
* tuple buffer is empty. (Calling the context the per-tuple
* memory context is a bit of a misnomer now.)
*/
ResetPerTupleExprContext(aestate->estate);
}
oldctx = MemoryContextSwitchTo(GetPerTupleMemoryContext(aestate->estate));
fill_missing_defaults(rel, aestate->estate, tup);
remotetuple = heap_form_tuple(RelationGetDescr(rel->rel),
tup->values, tup->nulls);
MemoryContextSwitchTo(TopTransactionContext);
slot = aestate->slot;
/* Store the tuple in slot, but make sure it's not freed. */
ExecStoreHeapTuple(remotetuple, slot, false);
if (aestate->resultRelInfo->ri_TrigDesc &&
aestate->resultRelInfo->ri_TrigDesc->trig_insert_before_row)
{