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0001-session_start_hook-v5.patch

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Filename: 0001-session_start_hook-v5.patch
Type: text/x-patch
Part: 0
Message: Re: [PATCH] A hook for session start

Patch

Same data as JSON: GET /api/v1/attachments/:id/patch the parsed metadata as JSON — format, series position, per-file stats; never the diff bytes. API reference →
Format: unified
Series: patch v5-0001
File+−
src/backend/tcop/postgres.c 6 0
src/include/tcop/tcopprot.h 5 0 
diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 2c7260e..24346fb 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -169,6 +169,9 @@ static ProcSignalReason RecoveryConflictReason;
 static MemoryContext row_description_context = NULL;
 static StringInfoData row_description_buf;
 
+/* Hook for plugins to get control at start of session */
+session_start_hook_type session_start_hook = NULL;
+
 /* ----------------------------------------------------------------
  *		decls for routines only used in this file
  * ----------------------------------------------------------------
@@ -3857,6 +3860,9 @@ PostgresMain(int argc, char *argv[],
 	if (!IsUnderPostmaster)
 		PgStartTime = GetCurrentTimestamp();
 
+	if (session_start_hook)
+		(*session_start_hook) (dbname, username);
+
 	/*
 	 * POSTGRES main processing loop begins here
 	 *
diff --git a/src/include/tcop/tcopprot.h b/src/include/tcop/tcopprot.h
index f8c535c..d349592 100644
--- a/src/include/tcop/tcopprot.h
+++ b/src/include/tcop/tcopprot.h
@@ -35,6 +35,11 @@ extern PGDLLIMPORT const char *debug_query_string;
 extern int	max_stack_depth;
 extern int	PostAuthDelay;
 
+/* Hook for plugins to get control at start of session */
+typedef void (*session_start_hook_type) (const char *dbname,
+										 const char *username);
+extern PGDLLIMPORT session_start_hook_type session_start_hook;
+
 /* GUC-configurable parameters */
 
 typedef enum