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c7b8998ebb
Change pg_bsd_indent to follow upstream rules for placement of comments
to the right of code, and remove pgindent hack that caused comments
following #endif to not obey the general rule.
Commit e3860ffa4d wasn't actually using
the published version of pg_bsd_indent, but a hacked-up version that
tried to minimize the amount of movement of comments to the right of
code. The situation of interest is where such a comment has to be
moved to the right of its default placement at column 33 because there's
code there. BSD indent has always moved right in units of tab stops
in such cases --- but in the previous incarnation, indent was working
in 8-space tab stops, while now it knows we use 4-space tabs. So the
net result is that in about half the cases, such comments are placed
one tab stop left of before. This is better all around: it leaves
more room on the line for comment text, and it means that in such
cases the comment uniformly starts at the next 4-space tab stop after
the code, rather than sometimes one and sometimes two tabs after.
Also, ensure that comments following #endif are indented the same
as comments following other preprocessor commands such as #else.
That inconsistency turns out to have been self-inflicted damage
from a poorly-thought-through post-indent "fixup" in pgindent.
This patch is much less interesting than the first round of indent
changes, but also bulkier, so I thought it best to separate the effects.
Discussion: https://postgr.es/m/E1dAmxK-0006EE-1r@gemulon.postgresql.org
Discussion: https://postgr.es/m/30527.1495162840@sss.pgh.pa.us
111 lines
3.3 KiB
C
111 lines
3.3 KiB
C
/*-------------------------------------------------------------------------
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* output_plugin.h
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* PostgreSQL Logical Decode Plugin Interface
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*
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* Copyright (c) 2012-2017, PostgreSQL Global Development Group
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef OUTPUT_PLUGIN_H
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#define OUTPUT_PLUGIN_H
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#include "replication/reorderbuffer.h"
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struct LogicalDecodingContext;
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struct OutputPluginCallbacks;
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typedef enum OutputPluginOutputType
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{
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OUTPUT_PLUGIN_BINARY_OUTPUT,
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OUTPUT_PLUGIN_TEXTUAL_OUTPUT
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} OutputPluginOutputType;
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/*
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* Options set by the output plugin, in the startup callback.
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*/
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typedef struct OutputPluginOptions
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{
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OutputPluginOutputType output_type;
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} OutputPluginOptions;
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/*
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* Type of the shared library symbol _PG_output_plugin_init that is looked up
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* when loading an output plugin shared library.
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*/
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typedef void (*LogicalOutputPluginInit) (struct OutputPluginCallbacks *cb);
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/*
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* Callback that gets called in a user-defined plugin. ctx->private_data can
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* be set to some private data.
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*
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* "is_init" will be set to "true" if the decoding slot just got defined. When
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* the same slot is used from there one, it will be "false".
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*/
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typedef void (*LogicalDecodeStartupCB) (struct LogicalDecodingContext *ctx,
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OutputPluginOptions *options,
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bool is_init);
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/*
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* Callback called for every (explicit or implicit) BEGIN of a successful
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* transaction.
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*/
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typedef void (*LogicalDecodeBeginCB) (struct LogicalDecodingContext *ctx,
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ReorderBufferTXN *txn);
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/*
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* Callback for every individual change in a successful transaction.
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*/
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typedef void (*LogicalDecodeChangeCB) (struct LogicalDecodingContext *ctx,
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ReorderBufferTXN *txn,
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Relation relation,
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ReorderBufferChange *change);
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/*
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* Called for every (explicit or implicit) COMMIT of a successful transaction.
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*/
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typedef void (*LogicalDecodeCommitCB) (struct LogicalDecodingContext *ctx,
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ReorderBufferTXN *txn,
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XLogRecPtr commit_lsn);
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/*
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* Called for the generic logical decoding messages.
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*/
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typedef void (*LogicalDecodeMessageCB) (struct LogicalDecodingContext *ctx,
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ReorderBufferTXN *txn,
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XLogRecPtr message_lsn,
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bool transactional,
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const char *prefix,
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Size message_size,
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const char *message);
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/*
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* Filter changes by origin.
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*/
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typedef bool (*LogicalDecodeFilterByOriginCB) (struct LogicalDecodingContext *ctx,
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RepOriginId origin_id);
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/*
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* Called to shutdown an output plugin.
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*/
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typedef void (*LogicalDecodeShutdownCB) (struct LogicalDecodingContext *ctx);
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/*
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* Output plugin callbacks
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*/
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typedef struct OutputPluginCallbacks
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{
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LogicalDecodeStartupCB startup_cb;
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LogicalDecodeBeginCB begin_cb;
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LogicalDecodeChangeCB change_cb;
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LogicalDecodeCommitCB commit_cb;
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LogicalDecodeMessageCB message_cb;
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LogicalDecodeFilterByOriginCB filter_by_origin_cb;
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LogicalDecodeShutdownCB shutdown_cb;
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} OutputPluginCallbacks;
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/* Functions in replication/logical/logical.c */
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extern void OutputPluginPrepareWrite(struct LogicalDecodingContext *ctx, bool last_write);
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extern void OutputPluginWrite(struct LogicalDecodingContext *ctx, bool last_write);
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extern void OutputPluginUpdateProgress(struct LogicalDecodingContext *ctx);
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#endif /* OUTPUT_PLUGIN_H */
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