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Add a xid argument to the filter_prepare callback for output plugins.

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Along with gid, this provides a different way to identify the transaction.
The users that use xid in some way to prepare the transactions can use it
to filter prepare transactions. The later commands COMMIT PREPARED or
ROLLBACK PREPARED carries both identifiers, providing an output plugin the
choice of what to use.

Author: Markus Wanner
Reviewed-by: Vignesh C, Amit Kapila
Discussion: https://postgr.es/m/ee280000-7355-c4dc-e47b-2436e7be959c@enterprisedb.com
This commit is contained in:
Amit Kapila
2021-03-30 10:34:43 +05:30
parent bc2797ebb1
commit f64ea6dc5c
6 changed files with 38 additions and 21 deletions
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5
src/backend/replication/logical/logical.c
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@@ -1083,7 +1083,8 @@ truncate_cb_wrapper(ReorderBuffer *cache, ReorderBufferTXN *txn,
}
bool
filter_prepare_cb_wrapper(LogicalDecodingContext *ctx, const char *gid)
filter_prepare_cb_wrapper(LogicalDecodingContext *ctx, TransactionId xid,
const char *gid)
{
LogicalErrorCallbackState state;
ErrorContextCallback errcallback;
@@ -1104,7 +1105,7 @@ filter_prepare_cb_wrapper(LogicalDecodingContext *ctx, const char *gid)
ctx->accept_writes = false;
/* do the actual work: call callback */
ret = ctx->callbacks.filter_prepare_cb(ctx, gid);
ret = ctx->callbacks.filter_prepare_cb(ctx, xid, gid);
/* Pop the error context stack */
error_context_stack = errcallback.previous;