diff options
| -rw-r--r-- | contrib/pg_walinspect/expected/oldextversions.out | 46 | ||||
| -rw-r--r-- | contrib/pg_walinspect/expected/pg_walinspect.out | 42 | ||||
| -rw-r--r-- | contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql | 4 | ||||
| -rw-r--r-- | contrib/pg_walinspect/pg_walinspect.c | 215 | ||||
| -rw-r--r-- | contrib/pg_walinspect/sql/oldextversions.sql | 19 | ||||
| -rw-r--r-- | contrib/pg_walinspect/sql/pg_walinspect.sql | 6 | ||||
| -rw-r--r-- | doc/src/sgml/pgwalinspect.sgml | 59 |
7 files changed, 184 insertions, 207 deletions
diff --git a/contrib/pg_walinspect/expected/oldextversions.out b/contrib/pg_walinspect/expected/oldextversions.out index 0db35386936..7949555c847 100644 --- a/contrib/pg_walinspect/expected/oldextversions.out +++ b/contrib/pg_walinspect/expected/oldextversions.out @@ -1,5 +1,7 @@ -- test old extension version entry points CREATE EXTENSION pg_walinspect WITH VERSION '1.0'; +-- Mask DETAIL messages as these could refer to current LSN positions. +\set VERBOSITY terse -- List what version 1.0 contains \dx+ pg_walinspect Objects in extension "pg_walinspect" @@ -12,19 +14,51 @@ CREATE EXTENSION pg_walinspect WITH VERSION '1.0'; function pg_get_wal_stats_till_end_of_wal(pg_lsn,boolean) (5 rows) +-- Make sure checkpoints don't interfere with the test. +SELECT 'init' FROM pg_create_physical_replication_slot('regress_pg_walinspect_slot', true, false); + ?column? +---------- + init +(1 row) + +CREATE TABLE sample_tbl(col1 int, col2 int); +SELECT pg_current_wal_lsn() AS wal_lsn1 \gset +INSERT INTO sample_tbl SELECT * FROM generate_series(1, 2); +-- Check bounds for these past functions. +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info_till_end_of_wal(:'wal_lsn1'); + ok +---- + t +(1 row) + +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_stats_till_end_of_wal(:'wal_lsn1'); + ok +---- + t +(1 row) + +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info_till_end_of_wal('FFFFFFFF/FFFFFFFF'); +ERROR: WAL start LSN must be less than current LSN +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_stats_till_end_of_wal('FFFFFFFF/FFFFFFFF'); +ERROR: WAL start LSN must be less than current LSN -- Move to new version 1.1 ALTER EXTENSION pg_walinspect UPDATE TO '1.1'; -- List what version 1.1 contains \dx+ pg_walinspect - Objects in extension "pg_walinspect" - Object description ------------------------------------------------------------ + Objects in extension "pg_walinspect" + Object description +-------------------------------------------------- function pg_get_wal_block_info(pg_lsn,pg_lsn) function pg_get_wal_record_info(pg_lsn) function pg_get_wal_records_info(pg_lsn,pg_lsn) - function pg_get_wal_records_info_till_end_of_wal(pg_lsn) function pg_get_wal_stats(pg_lsn,pg_lsn,boolean) - function pg_get_wal_stats_till_end_of_wal(pg_lsn,boolean) -(6 rows) +(4 rows) + +SELECT pg_drop_replication_slot('regress_pg_walinspect_slot'); + pg_drop_replication_slot +-------------------------- + +(1 row) +DROP TABLE sample_tbl; DROP EXTENSION pg_walinspect; diff --git a/contrib/pg_walinspect/expected/pg_walinspect.out b/contrib/pg_walinspect/expected/pg_walinspect.out index c9fb781055e..e3b31f15e34 100644 --- a/contrib/pg_walinspect/expected/pg_walinspect.out +++ b/contrib/pg_walinspect/expected/pg_walinspect.out @@ -36,41 +36,37 @@ SELECT * FROM pg_get_wal_block_info(:'wal_lsn2', :'wal_lsn1'); ERROR: WAL start LSN must be less than end LSN -- LSNs with the highest value possible. SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info('FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future input LSN -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info_till_end_of_wal('FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future start LSN -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats_till_end_of_wal('FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future start LSN --- failures with end LSNs +ERROR: WAL input LSN must be less than current LSN +-- Success with end LSNs. SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future end LSN + ok +---- + t +(1 row) + SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future end LSN -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future end LSN --- failures with start LSNs -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future start LSN -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future start LSN -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); -ERROR: cannot accept future start LSN --- =================================================================== --- Tests for all function executions --- =================================================================== -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info(:'wal_lsn1'); ok ---- t (1 row) -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info_till_end_of_wal(:'wal_lsn1'); +SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); ok ---- t (1 row) -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats_till_end_of_wal(:'wal_lsn1'); +-- failures with start LSNs +SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); +ERROR: WAL start LSN must be less than current LSN +SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); +ERROR: WAL start LSN must be less than current LSN +SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info('FFFFFFFF/FFFFFFFE', 'FFFFFFFF/FFFFFFFF'); +ERROR: WAL start LSN must be less than current LSN +-- =================================================================== +-- Tests for all function executions +-- =================================================================== +SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info(:'wal_lsn1'); ok ---- t diff --git a/contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql b/contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql index e674ef25aa7..586c3b44677 100644 --- a/contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql +++ b/contrib/pg_walinspect/pg_walinspect--1.0--1.1.sql @@ -3,6 +3,10 @@ -- complain if script is sourced in psql, rather than via ALTER EXTENSION \echo Use "ALTER EXTENSION pg_walinspect UPDATE TO '1.1'" to load this file. \quit +-- Unsupported functions after 1.1. +DROP FUNCTION pg_get_wal_records_info_till_end_of_wal(pg_lsn); +DROP FUNCTION pg_get_wal_stats_till_end_of_wal(pg_lsn, boolean); + -- -- pg_get_wal_block_info() -- diff --git a/contrib/pg_walinspect/pg_walinspect.c b/contrib/pg_walinspect/pg_walinspect.c index ee88dc49921..3b3215daf5a 100644 --- a/contrib/pg_walinspect/pg_walinspect.c +++ b/contrib/pg_walinspect/pg_walinspect.c @@ -38,14 +38,14 @@ PG_FUNCTION_INFO_V1(pg_get_wal_records_info_till_end_of_wal); PG_FUNCTION_INFO_V1(pg_get_wal_stats); PG_FUNCTION_INFO_V1(pg_get_wal_stats_till_end_of_wal); -static bool IsFutureLSN(XLogRecPtr lsn, XLogRecPtr *curr_lsn); +static void ValidateInputLSNs(XLogRecPtr start_lsn, XLogRecPtr *end_lsn); +static XLogRecPtr GetCurrentLSN(void); static XLogReaderState *InitXLogReaderState(XLogRecPtr lsn); static XLogRecord *ReadNextXLogRecord(XLogReaderState *xlogreader); static void GetWALRecordInfo(XLogReaderState *record, Datum *values, bool *nulls, uint32 ncols); -static XLogRecPtr ValidateInputLSNs(bool till_end_of_wal, - XLogRecPtr start_lsn, XLogRecPtr end_lsn); -static void GetWALRecordsInfo(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, +static void GetWALRecordsInfo(FunctionCallInfo fcinfo, + XLogRecPtr start_lsn, XLogRecPtr end_lsn); static void GetXLogSummaryStats(XLogStats *stats, ReturnSetInfo *rsinfo, Datum *values, bool *nulls, uint32 ncols, @@ -55,32 +55,32 @@ static void FillXLogStatsRow(const char *name, uint64 n, uint64 total_count, uint64 fpi_len, uint64 total_fpi_len, uint64 tot_len, uint64 total_len, Datum *values, bool *nulls, uint32 ncols); -static void GetWalStats(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, - XLogRecPtr end_lsn, bool stats_per_record); +static void GetWalStats(FunctionCallInfo fcinfo, + XLogRecPtr start_lsn, + XLogRecPtr end_lsn, + bool stats_per_record); static void GetWALBlockInfo(FunctionCallInfo fcinfo, XLogReaderState *record); /* - * Check if the given LSN is in future. Also, return the LSN up to which the - * server has WAL. + * Return the LSN up to which the server has WAL. */ -static bool -IsFutureLSN(XLogRecPtr lsn, XLogRecPtr *curr_lsn) +static XLogRecPtr +GetCurrentLSN(void) { + XLogRecPtr curr_lsn; + /* * We determine the current LSN of the server similar to how page_read * callback read_local_xlog_page_no_wait does. */ if (!RecoveryInProgress()) - *curr_lsn = GetFlushRecPtr(NULL); + curr_lsn = GetFlushRecPtr(NULL); else - *curr_lsn = GetXLogReplayRecPtr(NULL); - - Assert(!XLogRecPtrIsInvalid(*curr_lsn)); + curr_lsn = GetXLogReplayRecPtr(NULL); - if (lsn >= *curr_lsn) - return true; + Assert(!XLogRecPtrIsInvalid(curr_lsn)); - return false; + return curr_lsn; } /* @@ -354,23 +354,17 @@ GetWALBlockInfo(FunctionCallInfo fcinfo, XLogReaderState *record) * their relation information, and the data saved in each block associated * to a record. Decompression is applied to the full page images, if * necessary. - * - * This function emits an error if a future start or end WAL LSN i.e. WAL LSN - * the database system doesn't know about is specified. */ Datum pg_get_wal_block_info(PG_FUNCTION_ARGS) { - XLogRecPtr start_lsn; - XLogRecPtr end_lsn; + XLogRecPtr start_lsn = PG_GETARG_LSN(0); + XLogRecPtr end_lsn = PG_GETARG_LSN(1); XLogReaderState *xlogreader; MemoryContext old_cxt; MemoryContext tmp_cxt; - start_lsn = PG_GETARG_LSN(0); - end_lsn = PG_GETARG_LSN(1); - - end_lsn = ValidateInputLSNs(false, start_lsn, end_lsn); + ValidateInputLSNs(start_lsn, &end_lsn); InitMaterializedSRF(fcinfo, 0); @@ -404,9 +398,6 @@ pg_get_wal_block_info(PG_FUNCTION_ARGS) /* * Get WAL record info. - * - * This function emits an error if a future WAL LSN i.e. WAL LSN the database - * system doesn't know about is specified. */ Datum pg_get_wal_record_info(PG_FUNCTION_ARGS) @@ -422,20 +413,14 @@ pg_get_wal_record_info(PG_FUNCTION_ARGS) HeapTuple tuple; lsn = PG_GETARG_LSN(0); + curr_lsn = GetCurrentLSN(); - if (IsFutureLSN(lsn, &curr_lsn)) - { - /* - * GetFlushRecPtr or GetXLogReplayRecPtr gives "end+1" LSN of the last - * record flushed or replayed respectively. But let's use the LSN up - * to "end" in user facing message. - */ + if (lsn > curr_lsn) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), - errmsg("cannot accept future input LSN"), - errdetail("Last known WAL LSN on the database system is at %X/%X.", + errmsg("WAL input LSN must be less than current LSN"), + errdetail("Current WAL LSN on the database system is at %X/%X.", LSN_FORMAT_ARGS(curr_lsn)))); - } /* Build a tuple descriptor for our result type. */ if (get_call_result_type(fcinfo, NULL, &tupdesc) != TYPEFUNC_COMPOSITE) @@ -462,44 +447,30 @@ pg_get_wal_record_info(PG_FUNCTION_ARGS) } /* - * Validate the input LSNs and compute end LSN for till_end_of_wal versions. + * Validate start and end LSNs coming from the function inputs. + * + * If end_lsn is found to be higher than the current LSN reported by the + * cluster, use the current LSN as the upper bound. */ -static XLogRecPtr -ValidateInputLSNs(bool till_end_of_wal, XLogRecPtr start_lsn, - XLogRecPtr end_lsn) +static void +ValidateInputLSNs(XLogRecPtr start_lsn, XLogRecPtr *end_lsn) { - XLogRecPtr curr_lsn; + XLogRecPtr curr_lsn = GetCurrentLSN(); - if (IsFutureLSN(start_lsn, &curr_lsn)) - { - /* - * GetFlushRecPtr or GetXLogReplayRecPtr gives "end+1" LSN of the last - * record flushed or replayed respectively. But let's use the LSN up - * to "end" in user facing message. - */ + if (start_lsn > curr_lsn) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), - errmsg("cannot accept future start LSN"), - errdetail("Last known WAL LSN on the database system is at %X/%X.", + errmsg("WAL start LSN must be less than current LSN"), + errdetail("Current WAL LSN on the database system is at %X/%X.", LSN_FORMAT_ARGS(curr_lsn)))); - } - if (till_end_of_wal) - end_lsn = curr_lsn; - - if (end_lsn > curr_lsn) - ereport(ERROR, - (errcode(ERRCODE_INVALID_PARAMETER_VALUE), - errmsg("cannot accept future end LSN"), - errdetail("Last known WAL LSN on the database system is at %X/%X.", - LSN_FORMAT_ARGS(curr_lsn)))); - - if (start_lsn >= end_lsn) + if (start_lsn > *end_lsn) ereport(ERROR, (errcode(ERRCODE_INVALID_PARAMETER_VALUE), errmsg("WAL start LSN must be less than end LSN"))); - return end_lsn; + if (*end_lsn > curr_lsn) + *end_lsn = curr_lsn; } /* @@ -517,6 +488,8 @@ GetWALRecordsInfo(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, MemoryContext old_cxt; MemoryContext tmp_cxt; + Assert(start_lsn <= end_lsn); + InitMaterializedSRF(fcinfo, 0); xlogreader = InitXLogReaderState(start_lsn); @@ -553,42 +526,14 @@ GetWALRecordsInfo(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, /* * Get info and data of all WAL records between start LSN and end LSN. - * - * This function emits an error if a future start or end WAL LSN i.e. WAL LSN - * the database system doesn't know about is specified. */ Datum pg_get_wal_records_info(PG_FUNCTION_ARGS) { - XLogRecPtr start_lsn; - XLogRecPtr end_lsn; - - start_lsn = PG_GETARG_LSN(0); - end_lsn = PG_GETARG_LSN(1); - - end_lsn = ValidateInputLSNs(false, start_lsn, end_lsn); - - GetWALRecordsInfo(fcinfo, start_lsn, end_lsn); - - PG_RETURN_VOID(); -} - -/* - * Get info and data of all WAL records from start LSN till end of WAL. - * - * This function emits an error if a future start i.e. WAL LSN the database - * system doesn't know about is specified. - */ -Datum -pg_get_wal_records_info_till_end_of_wal(PG_FUNCTION_ARGS) -{ - XLogRecPtr start_lsn; - XLogRecPtr end_lsn = InvalidXLogRecPtr; - - start_lsn = PG_GETARG_LSN(0); - - end_lsn = ValidateInputLSNs(true, start_lsn, end_lsn); + XLogRecPtr start_lsn = PG_GETARG_LSN(0); + XLogRecPtr end_lsn = PG_GETARG_LSN(1); + ValidateInputLSNs(start_lsn, &end_lsn); GetWALRecordsInfo(fcinfo, start_lsn, end_lsn); PG_RETURN_VOID(); @@ -648,13 +593,13 @@ GetXLogSummaryStats(XLogStats *stats, ReturnSetInfo *rsinfo, Datum *values, bool *nulls, uint32 ncols, bool stats_per_record) { - MemoryContext old_cxt; - MemoryContext tmp_cxt; - uint64 total_count = 0; - uint64 total_rec_len = 0; - uint64 total_fpi_len = 0; - uint64 total_len = 0; - int ri; + MemoryContext old_cxt; + MemoryContext tmp_cxt; + uint64 total_count = 0; + uint64 total_rec_len = 0; + uint64 total_fpi_len = 0; + uint64 total_len = 0; + int ri; /* * Each row shows its percentages of the total, so make a first pass to @@ -757,8 +702,8 @@ GetXLogSummaryStats(XLogStats *stats, ReturnSetInfo *rsinfo, * Get WAL stats between start LSN and end LSN. */ static void -GetWalStats(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, - XLogRecPtr end_lsn, bool stats_per_record) +GetWalStats(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, XLogRecPtr end_lsn, + bool stats_per_record) { #define PG_GET_WAL_STATS_COLS 9 XLogReaderState *xlogreader; @@ -767,6 +712,8 @@ GetWalStats(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, Datum values[PG_GET_WAL_STATS_COLS] = {0}; bool nulls[PG_GET_WAL_STATS_COLS] = {0}; + Assert(start_lsn <= end_lsn); + InitMaterializedSRF(fcinfo, 0); xlogreader = InitXLogReaderState(start_lsn); @@ -791,45 +738,55 @@ GetWalStats(FunctionCallInfo fcinfo, XLogRecPtr start_lsn, /* * Get stats of all WAL records between start LSN and end LSN. - * - * This function emits an error if a future start or end WAL LSN i.e. WAL LSN - * the database system doesn't know about is specified. */ Datum pg_get_wal_stats(PG_FUNCTION_ARGS) { - XLogRecPtr start_lsn; - XLogRecPtr end_lsn; - bool stats_per_record; - - start_lsn = PG_GETARG_LSN(0); - end_lsn = PG_GETARG_LSN(1); - stats_per_record = PG_GETARG_BOOL(2); - - end_lsn = ValidateInputLSNs(false, start_lsn, end_lsn); + XLogRecPtr start_lsn = PG_GETARG_LSN(0); + XLogRecPtr end_lsn = PG_GETARG_LSN(1); + bool stats_per_record = PG_GETARG_BOOL(2); + ValidateInputLSNs(start_lsn, &end_lsn); GetWalStats(fcinfo, start_lsn, end_lsn, stats_per_record); PG_RETURN_VOID(); } /* - * Get stats of all WAL records from start LSN till end of WAL. - * - * This function emits an error if a future start i.e. WAL LSN the database - * system doesn't know about is specified. + * The following functions have been removed in newer versions in 1.1, but + * they are kept around for compatibility. */ Datum -pg_get_wal_stats_till_end_of_wal(PG_FUNCTION_ARGS) +pg_get_wal_records_info_till_end_of_wal(PG_FUNCTION_ARGS) { - XLogRecPtr start_lsn; - XLogRecPtr end_lsn = InvalidXLogRecPtr; - bool stats_per_record; + XLogRecPtr start_lsn = PG_GETARG_LSN(0); + XLogRecPtr end_lsn = GetCurrentLSN(); + + if (start_lsn > end_lsn) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("WAL start LSN must be less than current LSN"), + errdetail("Current WAL LSN on the database system is at %X/%X.", + LSN_FORMAT_ARGS(end_lsn)))); - start_lsn = PG_GETARG_LSN(0); - stats_per_record = PG_GETARG_BOOL(1); + GetWALRecordsInfo(fcinfo, start_lsn, end_lsn); - end_lsn = ValidateInputLSNs(true, start_lsn, end_lsn); + PG_RETURN_VOID(); +} + +Datum +pg_get_wal_stats_till_end_of_wal(PG_FUNCTION_ARGS) +{ + XLogRecPtr start_lsn = PG_GETARG_LSN(0); + XLogRecPtr end_lsn = GetCurrentLSN(); + bool stats_per_record = PG_GETARG_BOOL(1); + + if (start_lsn > end_lsn) + ereport(ERROR, + (errcode(ERRCODE_INVALID_PARAMETER_VALUE), + errmsg("WAL start LSN must be less than current LSN"), + errdetail("Current WAL LSN on the database system is at %X/%X.", + LSN_FORMAT_ARGS(end_lsn)))); GetWalStats(fcinfo, start_lsn, end_lsn, stats_per_record); diff --git a/contrib/pg_walinspect/sql/oldextversions.sql b/contrib/pg_walinspect/sql/oldextversions.sql index f448094addf..258a0098883 100644 --- a/contrib/pg_walinspect/sql/oldextversions.sql +++ b/contrib/pg_walinspect/sql/oldextversions.sql @@ -2,13 +2,32 @@ CREATE EXTENSION pg_walinspect WITH VERSION '1.0'; +-- Mask DETAIL messages as these could refer to current LSN positions. +\set VERBOSITY terse + -- List what version 1.0 contains \dx+ pg_walinspect +-- Make sure checkpoints don't interfere with the test. +SELECT 'init' FROM pg_create_physical_replication_slot('regress_pg_walinspect_slot', true, false); + +CREATE TABLE sample_tbl(col1 int, col2 int); +SELECT pg_current_wal_lsn() AS wal_lsn1 \gset +INSERT INTO sample_tbl SELECT * FROM generate_series(1, 2); + +-- Check bounds for these past functions. +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info_till_end_of_wal(:'wal_lsn1'); +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_stats_till_end_of_wal(:'wal_lsn1'); +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_records_info_till_end_of_wal('FFFFFFFF/FFFFFFFF'); +SELECT COUNT(*) >= 1 AS ok FROM pg_get_wal_stats_till_end_of_wal('FFFFFFFF/FFFFFFFF'); + -- Move to new version 1.1 ALTER EXTENSION pg_walinspect UPDATE TO '1.1'; -- List what version 1.1 contains \dx+ pg_walinspect +SELECT pg_drop_replication_slot('regress_pg_walinspect_slot'); + +DROP TABLE sample_tbl; DROP EXTENSION pg_walinspect; diff --git a/contrib/pg_walinspect/sql/pg_walinspect.sql b/contrib/pg_walinspect/sql/pg_walinspect.sql index 766ed6b87d1..ba4d17df6c6 100644 --- a/contrib/pg_walinspect/sql/pg_walinspect.sql +++ b/contrib/pg_walinspect/sql/pg_walinspect.sql @@ -33,9 +33,7 @@ SELECT * FROM pg_get_wal_block_info(:'wal_lsn2', :'wal_lsn1'); -- LSNs with the highest value possible. SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info('FFFFFFFF/FFFFFFFF'); -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info_till_end_of_wal('FFFFFFFF/FFFFFFFF'); -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats_till_end_of_wal('FFFFFFFF/FFFFFFFF'); --- failures with end LSNs +-- Success with end LSNs. SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info(:'wal_lsn1', 'FFFFFFFF/FFFFFFFF'); @@ -49,8 +47,6 @@ SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info('FFFFFFFF/FFFFFFFE', 'FFFF -- =================================================================== SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_record_info(:'wal_lsn1'); -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info_till_end_of_wal(:'wal_lsn1'); -SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats_till_end_of_wal(:'wal_lsn1'); SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_records_info(:'wal_lsn1', :'wal_lsn2'); SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_stats(:'wal_lsn1', :'wal_lsn2'); SELECT COUNT(*) >= 0 AS ok FROM pg_get_wal_block_info(:'wal_lsn1', :'wal_lsn2'); diff --git a/doc/src/sgml/pgwalinspect.sgml b/doc/src/sgml/pgwalinspect.sgml index 3b19863dce9..9a0241a8d67 100644 --- a/doc/src/sgml/pgwalinspect.sgml +++ b/doc/src/sgml/pgwalinspect.sgml @@ -94,9 +94,11 @@ block_ref | blkref #0: rel 1663/5/60221 fork main blk 2 <para> Gets information of all the valid WAL records between <replaceable>start_lsn</replaceable> and <replaceable>end_lsn</replaceable>. - Returns one row per WAL record. If <replaceable>start_lsn</replaceable> - or <replaceable>end_lsn</replaceable> are not yet available, the - function will raise an error. For example: + Returns one row per WAL record. If a future + <replaceable>end_lsn</replaceable> (i.e. ahead of the current LSN of + the server) is specified, it returns information until the end of WAL. + The function raises an error if <replaceable>start_lsn</replaceable> + is not available. For example, usage of the function is as follows: <screen> postgres=# SELECT * FROM pg_get_wal_records_info('0/1E913618', '0/1E913740') LIMIT 1; -[ RECORD 1 ]----+-------------------------------------------------------------- @@ -116,23 +118,6 @@ block_ref | </listitem> </varlistentry> - <varlistentry id="pgwalinspect-funcs-pg-get-wal-records-info-till-end-of-wal"> - <term> - <function> - pg_get_wal_records_info_till_end_of_wal(start_lsn pg_lsn) - returns setof record - </function> - </term> - - <listitem> - <para> - This function is the same as <function>pg_get_wal_records_info()</function>, - except that it gets information of all the valid WAL records from - <replaceable>start_lsn</replaceable> till the end of WAL. - </para> - </listitem> - </varlistentry> - <varlistentry id="pgwalinspect-funcs-pg-get-wal-stats"> <term> <function> @@ -148,10 +133,11 @@ block_ref | <replaceable>end_lsn</replaceable>. By default, it returns one row per <replaceable>resource_manager</replaceable> type. When <replaceable>per_record</replaceable> is set to <literal>true</literal>, - it returns one row per <replaceable>record_type</replaceable>. - If <replaceable>start_lsn</replaceable> - or <replaceable>end_lsn</replaceable> are not yet available, the - function will raise an error. For example: + it returns one row per <replaceable>record_type</replaceable>. If a + future <replaceable>end_lsn</replaceable> (i.e. ahead of the current + LSN of the server) is specified, it returns statistics until the end + of WAL. An error is raised if <replaceable>start_lsn</replaceable> is + not available. For example, usage of the function is as follows: <screen> postgres=# SELECT * FROM pg_get_wal_stats('0/1E847D00', '0/1E84F500') WHERE count > 0 LIMIT 1 AND @@ -171,23 +157,6 @@ combined_size_percentage | 2.8634072910530795 </listitem> </varlistentry> - <varlistentry id="pgwalinspect-funcs-pg-get-wal-stats-till-end-of-wal"> - <term> - <function> - pg_get_wal_stats_till_end_of_wal(start_lsn pg_lsn, per_record boolean DEFAULT false) - returns setof record - </function> - </term> - - <listitem> - <para> - This function is the same as <function>pg_get_wal_stats()</function>, - except that it gets statistics of all the valid WAL records from - <replaceable>start_lsn</replaceable> till end of WAL. - </para> - </listitem> - </varlistentry> - <varlistentry> <term> <function>pg_get_wal_block_info(start_lsn pg_lsn, end_lsn pg_lsn) returns setof record</function> @@ -202,9 +171,11 @@ combined_size_percentage | 2.8634072910530795 and their information associated with all the valid WAL records between <replaceable>start_lsn</replaceable> and <replaceable>end_lsn</replaceable>. Returns one row per block registered - in a WAL record. If <replaceable>start_lsn</replaceable> or - <replaceable>end_lsn</replaceable> are not yet available, the function - will raise an error. For example: + in a WAL record. If a future <replaceable>end_lsn</replaceable> (i.e. + ahead of the current LSN of the server) is specified, it returns + statistics until the end of WAL. An error is raised if + <replaceable>start_lsn</replaceable> is not available. For example, + usage of the function is as follows: <screen> postgres=# SELECT lsn, blockid, reltablespace, reldatabase, relfilenode, relblocknumber, forkname, |