v4-0001-Refactor-move-XLogSource-enum-to-xlogrecovery.h.patch

From 86b6e0bac90ba6c9464525c80e74879cc06f7c4d Mon Sep 17 00:00:00 2001
From: alterego655 <824662526@qq.com>
Date: Tue, 27 Jan 2026 13:59:29 +0800
Subject: [PATCH v4 1/2] Refactor: move XLogSource enum to xlogrecovery.h

Move the XLogSource enum definition from xlogrecovery.c to the public
header xlogrecovery.h to make it available for external use.

This is preparation for exposing WAL source information via the
pg_stat_recovery view. The xlogSourceNames array remains in the
implementation file as it's only used for debugging output.

No functional change.
---
 src/backend/access/transam/xlogrecovery.c | 12 ------------
 src/include/access/xlogrecovery.h         | 12 ++++++++++++
 2 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/src/backend/access/transam/xlogrecovery.c b/src/backend/access/transam/xlogrecovery.c
index fbddd7e522c..11915ab3de0 100644
--- a/src/backend/access/transam/xlogrecovery.c
+++ b/src/backend/access/transam/xlogrecovery.c
@@ -204,18 +204,6 @@ typedef struct XLogPageReadPrivate
 /* flag to tell XLogPageRead that we have started replaying */
 static bool InRedo = false;
 
-/*
- * Codes indicating where we got a WAL file from during recovery, or where
- * to attempt to get one.
- */
-typedef enum
-{
-	XLOG_FROM_ANY = 0,			/* request to read WAL from any source */
-	XLOG_FROM_ARCHIVE,			/* restored using restore_command */
-	XLOG_FROM_PG_WAL,			/* existing file in pg_wal */
-	XLOG_FROM_STREAM,			/* streamed from primary */
-} XLogSource;
-
 /* human-readable names for XLogSources, for debugging output */
 static const char *const xlogSourceNames[] = {"any", "archive", "pg_wal", "stream"};
 
diff --git a/src/include/access/xlogrecovery.h b/src/include/access/xlogrecovery.h
index 2842106b285..ba714a78280 100644
--- a/src/include/access/xlogrecovery.h
+++ b/src/include/access/xlogrecovery.h
@@ -60,6 +60,18 @@ typedef enum RecoveryPauseState
 	RECOVERY_PAUSED,			/* recovery is paused */
 } RecoveryPauseState;
 
+/*
+ * Codes indicating where we got a WAL file from during recovery, or where
+ * to attempt to get one.
+ */
+typedef enum XLogSource
+{
+	XLOG_FROM_ANY = 0,			/* request to read WAL from any source */
+	XLOG_FROM_ARCHIVE,			/* restored using restore_command */
+	XLOG_FROM_PG_WAL,			/* existing file in pg_wal */
+	XLOG_FROM_STREAM,			/* streamed from primary */
+} XLogSource;
+
 /*
  * Shared-memory state for WAL recovery.
  */
-- 
2.51.0