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Add GET DIAGNOSTICS ... PG_CONTEXT in PL/PgSQL

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This adds the ability to get the call stack as a string from within a
PL/PgSQL function, which can be handy for logging to a table, or to
include in a useful message to an end-user.

Pavel Stehule, reviewed by Rushabh Lathia and rather heavily whacked
around by Stephen Frost.
This commit is contained in:
Stephen Frost
2013-07-24 18:53:27 -04:00
parent fa2fad3c06
commit 8312832567
10 changed files with 229 additions and 0 deletions
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src/include/utils/elog.h
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@ -406,6 +406,8 @@ extern void FlushErrorState(void);
extern void ReThrowError(ErrorData *edata) __attribute__((noreturn));
extern void pg_re_throw(void) __attribute__((noreturn));
extern char *GetErrorContextStack(void);
/* Hook for intercepting messages before they are sent to the server log */
typedef void (*emit_log_hook_type) (ErrorData *edata);
extern PGDLLIMPORT emit_log_hook_type emit_log_hook;