From 11f0dafe2be419240c0006c3e9112cbad3568baf Mon Sep 17 00:00:00 2001
From: Nick Hengeveld <nickh@reactrix.com>
Date: Mon, 10 Oct 2005 23:22:01 -0700
Subject: [PATCH] Don't fetch objects that exist in the local repository

Be sure not to fetch objects that already exist in the local repository.
The main process loop no longer performs this check, http-fetch now checks
prior to starting a new request queue entry and when fetch_object() is called,
and local-fetch now checks when fetch_object() is called.

As discussed in this thread: http://marc.theaimsgroup.com/?t=112854890500001

Signed-off-by: Nick Hengeveld <nickh@reactrix.com>

diff --git a/fetch.c b/fetch.c
index 3e073d3..73bde07 100644
--- a/fetch.c
+++ b/fetch.c
@@ -165,7 +165,7 @@ static int loop(void)
 		 * the queue because we needed to fetch it first.
 		 */
 		if (! (obj->flags & TO_SCAN)) {
-			if (!has_sha1_file(obj->sha1) && fetch(obj->sha1)) {
+			if (fetch(obj->sha1)) {
 				report_missing(obj->type
 					       ? obj->type
 					       : "object", obj->sha1);
diff --git a/http-fetch.c b/http-fetch.c
index dd9ea4c..d1e4593 100644
--- a/http-fetch.c
+++ b/http-fetch.c
@@ -489,7 +489,10 @@ void process_request_queue()
 
 	while (active_requests < max_requests && request != NULL) {
 		if (request->state == WAITING) {
-			start_request(request);
+			if (has_sha1_file(request->sha1))
+				release_request(request);
+			else
+				start_request(request);
 			curl_multi_perform(curlm, &num_transfers);
 		}
 		request = request->next;
@@ -890,6 +893,11 @@ static int fetch_object(struct alt_base *repo, unsigned char *sha1)
 	if (request == NULL)
 		return error("Couldn't find request for %s in the queue", hex);
 
+	if (has_sha1_file(request->sha1)) {
+		release_request(request);
+		return 0;
+	}
+
 #ifdef USE_CURL_MULTI
 	int num_transfers;
 	while (request->state == WAITING) {
diff --git a/local-fetch.c b/local-fetch.c
index a57386c..87a93de 100644
--- a/local-fetch.c
+++ b/local-fetch.c
@@ -166,7 +166,10 @@ static int fetch_file(const unsigned char *sha1)
 
 int fetch(unsigned char *sha1)
 {
-	return fetch_file(sha1) && fetch_pack(sha1);
+	if (has_sha1_file(sha1))
+		return 0;
+	else
+		return fetch_file(sha1) && fetch_pack(sha1);
 }
 
 int fetch_ref(char *ref, unsigned char *sha1)
-- 
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