Merge branch 'cc/multi-promisor'

Teach the lazy clone machinery that there can be more than one
promisor remote and consult them in order when downloading missing
objects on demand.

* cc/multi-promisor:
  Move core_partial_clone_filter_default to promisor-remote.c
  Move repository_format_partial_clone to promisor-remote.c
  Remove fetch-object.{c,h} in favor of promisor-remote.{c,h}
  remote: add promisor and partial clone config to the doc
  partial-clone: add multiple remotes in the doc
  t0410: test fetching from many promisor remotes
  builtin/fetch: remove unique promisor remote limitation
  promisor-remote: parse remote.*.partialclonefilter
  Use promisor_remote_get_direct() and has_promisor_remote()
  promisor-remote: use repository_format_partial_clone
  promisor-remote: add promisor_remote_reinit()
  promisor-remote: implement promisor_remote_get_direct()
  Add initial support for many promisor remotes
  fetch-object: make functions return an error code
  t0410: remove pipes after git commands

1 files changed, 55 insertions, 6 deletions

diff --git a/t/t0410-partial-clone.sh b/t/t0410-partial-clone.sh
index 33e0aa4a89..d4b7e535ea 100755
--- a/t/t0410-partial-clone.sh
+++ b/t/t0410-partial-clone.sh
@@ -26,7 +26,7 @@ promise_and_delete () {
 test_expect_success 'extensions.partialclone without filter' '
 	test_create_repo server &&
 	git clone --filter="blob:none" "file://$(pwd)/server" client &&
-	git -C client config --unset core.partialclonefilter &&
+	git -C client config --unset remote.origin.partialclonefilter &&
 	git -C client fetch origin
 '
 
@@ -166,8 +166,9 @@ test_expect_success 'fetching of missing objects' '
 	# associated packfile contains the object
 	ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 	test_line_count = 1 promisorlist &&
-	IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
-	git verify-pack --verbose "$IDX" | grep "$HASH"
+	IDX=$(sed "s/promisor$/idx/" promisorlist) &&
+	git verify-pack --verbose "$IDX" >out &&
+	grep "$HASH" out
 '
 
 test_expect_success 'fetching of missing objects works with ref-in-want enabled' '
@@ -182,8 +183,55 @@ test_expect_success 'fetching of missing objects works with ref-in-want enabled'
 	grep "git< fetch=.*ref-in-want" trace
 '
 
+test_expect_success 'fetching of missing objects from another promisor remote' '
+	git clone "file://$(pwd)/server" server2 &&
+	test_commit -C server2 bar &&
+	git -C server2 repack -a -d --write-bitmap-index &&
+	HASH2=$(git -C server2 rev-parse bar) &&
+
+	git -C repo remote add server2 "file://$(pwd)/server2" &&
+	git -C repo config remote.server2.promisor true &&
+	git -C repo cat-file -p "$HASH2" &&
+
+	git -C repo fetch server2 &&
+	rm -rf repo/.git/objects/* &&
+	git -C repo cat-file -p "$HASH2" &&
+
+	# Ensure that the .promisor file is written, and check that its
+	# associated packfile contains the object
+	ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
+	test_line_count = 1 promisorlist &&
+	IDX=$(sed "s/promisor$/idx/" promisorlist) &&
+	git verify-pack --verbose "$IDX" >out &&
+	grep "$HASH2" out
+'
+
+test_expect_success 'fetching of missing objects configures a promisor remote' '
+	git clone "file://$(pwd)/server" server3 &&
+	test_commit -C server3 baz &&
+	git -C server3 repack -a -d --write-bitmap-index &&
+	HASH3=$(git -C server3 rev-parse baz) &&
+	git -C server3 config uploadpack.allowfilter 1 &&
+
+	rm repo/.git/objects/pack/pack-*.promisor &&
+
+	git -C repo remote add server3 "file://$(pwd)/server3" &&
+	git -C repo fetch --filter="blob:none" server3 $HASH3 &&
+
+	test_cmp_config -C repo true remote.server3.promisor &&
+
+	# Ensure that the .promisor file is written, and check that its
+	# associated packfile contains the object
+	ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
+	test_line_count = 1 promisorlist &&
+	IDX=$(sed "s/promisor$/idx/" promisorlist) &&
+	git verify-pack --verbose "$IDX" >out &&
+	grep "$HASH3" out
+'
+
 test_expect_success 'fetching of missing blobs works' '
-	rm -rf server repo &&
+	rm -rf server server2 repo &&
+	rm -rf server server3 repo &&
 	test_create_repo server &&
 	test_commit -C server foo &&
 	git -C server repack -a -d --write-bitmap-index &&
@@ -514,8 +562,9 @@ test_expect_success 'fetching of missing objects from an HTTP server' '
 	# associated packfile contains the object
 	ls repo/.git/objects/pack/pack-*.promisor >promisorlist &&
 	test_line_count = 1 promisorlist &&
-	IDX=$(cat promisorlist | sed "s/promisor$/idx/") &&
-	git verify-pack --verbose "$IDX" | grep "$HASH"
+	IDX=$(sed "s/promisor$/idx/" promisorlist) &&
+	git verify-pack --verbose "$IDX" >out &&
+	grep "$HASH" out
 '
 
 # DO NOT add non-httpd-specific tests here, because the last part of this