[PATCH 13/13] odb/source: drop `read_alternates` callback

From

Patrick Steinhardt <ps@pks.im>

Date

Oct 2, 2026, 10:08 UTC

Message-ID

<20261002-pks-odb-move-alternates-v1-13-8a63507b88c4@pks.im>

In-Reply-To

<20261002-pks-odb-move-alternates-v1-0-8a63507b88c4@pks.im>

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 odb/source-files.c    |  7 -------
 odb/source-inmemory.c |  7 -------
 odb/source-loose.c    |  7 -------
 odb/source-packed.c   |  7 -------
 odb/source.h          | 27 ---------------------------
 5 files changed, 55 deletions(-)

diff --git a/odb/source-files.c b/odb/source-files.c
index 072f515b36..455f409db0 100644
--- a/odb/source-files.c
+++ b/odb/source-files.c
@@ -594,12 +594,6 @@ static int odb_source_files_begin_transaction(struct odb_source *source,
 	return odb_transaction_files_begin(source, out, flags);
 }
 
-static int odb_source_files_read_alternates(struct odb_source *source,
-					    struct strvec *out)
-{
-	return read_alternates(source->path, out);
-}
-
 static int too_many_loose_objects(struct odb_source_files *files, int limit)
 {
 	unsigned long loose_count;
@@ -1277,7 +1271,6 @@ struct odb_source_files *odb_source_files_new(struct object_database *odb,
 	files->base.write_object = odb_source_files_write_object;
 	files->base.write_object_stream = odb_source_files_write_object_stream;
 	files->base.begin_transaction = odb_source_files_begin_transaction;
-	files->base.read_alternates = odb_source_files_read_alternates;
 	files->base.optimize = odb_source_files_optimize;
 	files->base.optimize_required = odb_source_files_optimize_required;
 	files->base.generate_pack = odb_source_files_generate_pack;
diff --git a/odb/source-inmemory.c b/odb/source-inmemory.c
index f67c74a724..868e723c81 100644
--- a/odb/source-inmemory.c
+++ b/odb/source-inmemory.c
@@ -322,12 +322,6 @@ static int odb_source_inmemory_begin_transaction(struct odb_source *source UNUSE
 	return error("in-memory source does not support transactions");
 }
 
-static int odb_source_inmemory_read_alternates(struct odb_source *source UNUSED,
-					       struct strvec *out UNUSED)
-{
-	return 0;
-}
-
 static void odb_source_inmemory_close(struct odb_source *source UNUSED)
 {
 }
@@ -390,7 +384,6 @@ struct odb_source_inmemory *odb_source_inmemory_new(struct object_database *odb)
 	source->base.write_object_stream = odb_source_inmemory_write_object_stream;
 	source->base.freshen_object = odb_source_inmemory_freshen_object;
 	source->base.begin_transaction = odb_source_inmemory_begin_transaction;
-	source->base.read_alternates = odb_source_inmemory_read_alternates;
 
 	return source;
 }
diff --git a/odb/source-loose.c b/odb/source-loose.c
index b2fbccd3c0..0664634938 100644
--- a/odb/source-loose.c
+++ b/odb/source-loose.c
@@ -985,12 +985,6 @@ static int odb_source_loose_begin_transaction(struct odb_source *source UNUSED,
 	return error("loose source does not support transactions");
 }
 
-static int odb_source_loose_read_alternates(struct odb_source *source UNUSED,
-					    struct strvec *out UNUSED)
-{
-	return 0;
-}
-
 static void odb_source_loose_clear_cache(struct odb_source_loose *loose)
 {
 	oidtree_clear(loose->cache);
@@ -1145,7 +1139,6 @@ struct odb_source_loose *odb_source_loose_new(struct object_database *odb,
 	loose->base.write_object = odb_source_loose_write_object;
 	loose->base.write_object_stream = odb_source_loose_write_object_stream;
 	loose->base.begin_transaction = odb_source_loose_begin_transaction;
-	loose->base.read_alternates = odb_source_loose_read_alternates;
 
 	if (!is_absolute_path(loose->base.path))
 		chdir_notify_register(odb_source_loose_reparent, loose);
diff --git a/odb/source-packed.c b/odb/source-packed.c
index 831501f397..2226fbd313 100644
--- a/odb/source-packed.c
+++ b/odb/source-packed.c
@@ -687,12 +687,6 @@ static int odb_source_packed_begin_transaction(struct odb_source *source UNUSED,
 	return error("packed backend cannot begin transactions");
 }
 
-static int odb_source_packed_read_alternates(struct odb_source *source UNUSED,
-					     struct strvec *out UNUSED)
-{
-	return 0;
-}
-
 void (*report_garbage)(unsigned seen_bits, const char *path);
 
 static void report_helper(const struct string_list *list,
@@ -1019,7 +1013,6 @@ struct odb_source_packed *odb_source_packed_new(struct object_database *odb,
 	packed->base.write_object = odb_source_packed_write_object;
 	packed->base.write_object_stream = odb_source_packed_write_object_stream;
 	packed->base.begin_transaction = odb_source_packed_begin_transaction;
-	packed->base.read_alternates = odb_source_packed_read_alternates;
 
 	if (!is_absolute_path(path))
 		chdir_notify_register(odb_source_packed_reparent, packed);
diff --git a/odb/source.h b/odb/source.h
index 6718aced6a..1867347dfc 100644
--- a/odb/source.h
+++ b/odb/source.h
@@ -258,19 +258,6 @@ struct odb_source {
 				 struct odb_transaction **out,
 				 enum odb_transaction_flags flags);
 
-	/*
-	 * This callback is expected to read the list of alternate object
-	 * database sources connected to it and write them into the `strvec`.
-	 *
-	 * The result is expected to be paths to the alternates. All paths must
-	 * be resolved to absolute paths.
-	 *
-	 * The callback is expected to return 0 on success, a negative error
-	 * code otherwise.
-	 */
-	int (*read_alternates)(struct odb_source *source,
-			       struct strvec *out);
-
 	/*
 	 * This callback is expected to optimize the object database source.
 	 * Returns 0 on success, a negative error code otherwise.
@@ -507,20 +494,6 @@ static inline int odb_source_write_object_stream(struct odb_source *source,
 	return source->write_object_stream(source, stream, oid);
 }
 
-/*
- * Read the list of alternative object database sources from the given backend
- * and populate the `strvec` with them. The listing is not recursive -- that
- * is, if any of the yielded alternate sources has alternates itself, those
- * will not be yielded as part of this function call.
- *
- * Return 0 on success, a negative error code otherwise.
- */
-static inline int odb_source_read_alternates(struct odb_source *source,
-					     struct strvec *out)
-{
-	return source->read_alternates(source, out);
-}
-
 /*
  * Create a new transaction that can be used to write objects into a temporary
  * staging area. The objects will only be persisted when the transaction is

-- 
2.56.0.379.gc618271300.dirty