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Refactor function parse_output_parameters. 

Instead of using multiple parameters in parse_ouput_parameters function
signature, use the struct PGOutputData that encapsulates all pgoutput
options. It will be useful for future work where we need to add other
options in pgoutput.

Author: Euler Taveira
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/CADK3HHJ-+9SO7KuRLH=9Wa1rAo60Yreq1GFNkH_kd0=CdaWM+A@mail.gmail.com
This commit is contained in:
Amit Kapila 2021-04-06 08:26:31 +05:30
parent 6d41dd045a
commit 531737ddad
2 changed files with 10 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/backend/replication/pgoutput/pgoutput.c
View File

@ -156,9 +156,7 @@ _PG_output_plugin_init(OutputPluginCallbacks *cb)
}
static void
parse_output_parameters(List *options, uint32 *protocol_version,
List **publication_names, bool *binary,
bool *enable_streaming)
parse_output_parameters(List *options, PGOutputData *data)
{
ListCell *lc;
bool protocol_version_given = false;
@ -166,7 +164,8 @@ parse_output_parameters(List *options, uint32 *protocol_version,
bool binary_option_given = false;
bool streaming_given = false;
*binary = false;
data->binary = false;
data->streaming = false;
foreach(lc, options)
{
@ -196,7 +195,7 @@ parse_output_parameters(List *options, uint32 *protocol_version,
errmsg("proto_version \"%s\" out of range",
strVal(defel->arg))));
*protocol_version = (uint32) parsed;
data->protocol_version = (uint32) parsed;
}
else if (strcmp(defel->defname, "publication_names") == 0)
{
@ -207,7 +206,7 @@ parse_output_parameters(List *options, uint32 *protocol_version,
publication_names_given = true;
if (!SplitIdentifierString(strVal(defel->arg), ',',
publication_names))
&data->publication_names))
ereport(ERROR,
(errcode(ERRCODE_INVALID_NAME),
errmsg("invalid publication_names syntax")));
@ -220,7 +219,7 @@ parse_output_parameters(List *options, uint32 *protocol_version,
errmsg("conflicting or redundant options")));
binary_option_given = true;
*binary = defGetBoolean(defel);
data->binary = defGetBoolean(defel);
}
else if (strcmp(defel->defname, "streaming") == 0)
{
@ -230,7 +229,7 @@ parse_output_parameters(List *options, uint32 *protocol_version,
errmsg("conflicting or redundant options")));
streaming_given = true;
*enable_streaming = defGetBoolean(defel);
data->streaming = defGetBoolean(defel);
}
else
elog(ERROR, "unrecognized pgoutput option: %s", defel->defname);
@ -244,7 +243,6 @@ static void
pgoutput_startup(LogicalDecodingContext *ctx, OutputPluginOptions *opt,
bool is_init)
{
bool enable_streaming = false;
PGOutputData *data = palloc0(sizeof(PGOutputData));
/* Create our memory context for private allocations. */
@ -265,11 +263,7 @@ pgoutput_startup(LogicalDecodingContext *ctx, OutputPluginOptions *opt,
if (!is_init)
{
/* Parse the params and ERROR if we see any we don't recognize */
parse_output_parameters(ctx->output_plugin_options,
&data->protocol_version,
&data->publication_names,
&data->binary,
&enable_streaming);
parse_output_parameters(ctx->output_plugin_options, data);
/* Check if we support requested protocol */
if (data->protocol_version > LOGICALREP_PROTO_MAX_VERSION_NUM)
@ -295,7 +289,7 @@ pgoutput_startup(LogicalDecodingContext *ctx, OutputPluginOptions *opt,
* we only allow it with sufficient version of the protocol, and when
* the output plugin supports it.
*/
if (!enable_streaming)
if (!data->streaming)
ctx->streaming = false;
else if (data->protocol_version < LOGICALREP_PROTO_STREAM_VERSION_NUM)
ereport(ERROR,

1
src/include/replication/pgoutput.h
View File

@ -25,6 +25,7 @@ typedef struct PGOutputData
List *publication_names;
List *publications;
bool binary;
bool streaming;
} PGOutputData;
#endif /* PGOUTPUT_H */