[RFC PATCH v2 14/36] bundle-uri client: add boolean transfer.bundleURI setting

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The yet-to-be introduced client support for bundle-uri will always
fall back on a full clone, but we'd still like to be able to ignore a
server's bundle-uri advertisement entirely.

This is useful for testing, and if a server is pointing to bad
bundles, they take a while to time out etc.

Since we might see the config in any order we need to clear out any
accumulated bundle_uri list when we see transfer.bundleURI=false
setting, and not add any more things to the list.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 Documentation/config/transfer.txt |  6 ++++++
 transport.c                       | 21 +++++++++++++++++----
 2 files changed, 23 insertions(+), 4 deletions(-)

diff --git a/Documentation/config/transfer.txt b/Documentation/config/transfer.txt
index 71b9b8f29e6..ae85ca5760b 100644
--- a/Documentation/config/transfer.txt
+++ b/Documentation/config/transfer.txt
@@ -78,6 +78,12 @@ transfer.advertiseSID::
 	Boolean. When true, client and server processes will advertise their
 	unique session IDs to their remote counterpart. Defaults to false.
 
+transfer.bundleURI::
+	When set to `false` ignores any server advertisement of
+	`bundle-uri` and proceed with a "normal" clone/fetch even if
+	using bundles to bootstap is possible. Defaults to `true`,
+	i.e. bundle-uri is tried whenever a server offers it.
+
 transfer.injectBundleURI::
 	Allows for the injection of `bundle-uri` lines into the
 	protocol v2 transport dialog (see `protocol.version` in
diff --git a/transport.c b/transport.c
index 342e39d81f3..9e20b531215 100644
--- a/transport.c
+++ b/transport.c
@@ -1521,19 +1521,28 @@ int transport_fetch_refs(struct transport *transport, struct ref *refs)
 	return rc;
 }
 
-struct config_cb {
+struct bundle_config_cb {
 	struct transport *transport;
 	int configured;
 	int ret;
+	int disabled;
 };
 
 static int bundle_uri_config(const char *var, const char *value, void *data)
 {
-	struct config_cb *cb = data;
+	struct bundle_config_cb *cb = data;
 	struct transport *transport = cb->transport;
 	struct string_list *uri = &transport->bundle_uri;
 
-	if (!strcmp(var, "transfer.injectbundleuri")) {
+	if (!strcmp(var, "transfer.bundleuri")) {
+		cb->disabled = !git_config_bool(var, value);
+		if (cb->disabled)
+			bundle_uri_string_list_clear(uri);
+		return 0;
+	}
+
+	if (!cb->disabled &&
+	    !strcmp(var, "transfer.injectbundleuri")) {
 		cb->configured = 1;
 		if (!value)
 			cb->ret = error(_("bad (empty) transfer.injectBundleURI"));
@@ -1548,7 +1557,7 @@ static int bundle_uri_config(const char *var, const char *value, void *data)
 int transport_get_remote_bundle_uri(struct transport *transport, int quiet)
 {
 	const struct transport_vtable *vtable = transport->vtable;
-	struct config_cb cb = {
+	struct bundle_config_cb cb = {
 		.transport = transport,
 	};
 
@@ -1558,6 +1567,10 @@ int transport_get_remote_bundle_uri(struct transport *transport, int quiet)
 
 	git_config(bundle_uri_config, &cb);
 
+	/* Don't use bundle-uri at all */
+	if (cb.disabled)
+		return 0;
+
 	/* Our own config can fake it up with transport.injectBundleURI */
 	if (cb.configured)
 		return cb.ret;
-- 
2.36.0.rc2.902.g60576bbc845




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