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Add pgLsnFromStr(), pgLsnToStr(), and pgLsnToWalSegment().

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This commit is contained in:
David Steele
2019-12-08 14:19:47 -05:00
parent f517b141fb
commit 2cfde18755
4 changed files with 70 additions and 1 deletions
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7
src/postgres/interface.h
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@ -125,6 +125,13 @@ PgWal pgWalFromBuffer(const Buffer *walBuffer);
// Get the tablespace identifier used to distinguish versions in a tablespace directory, e.g. PG_9.0_201008051
String *pgTablespaceId(unsigned int pgVersion);
// Convert a string to an lsn and vice versa
uint64_t pgLsnFromStr(const String *lsn);
String *pgLsnToStr(uint64_t lsn);
// Convert a timeline and lsn to a wal segment
String *pgLsnToWalSegment(uint32_t timeline, uint64_t lsn, unsigned int walSegmentSize);
// Get name used for lsn in functions (this was changed in PostgreSQL 10 for consistency since lots of names were changing)
const String *pgLsnName(unsigned int pgVersion);