[PATCH v2 4/9] bundle-uri: serve bundle.* keys from config

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <derrickstolee@github.com>

Implement the "bundle-uri" protocol v2 capability by populating the
key=value packet lines from the local Git config. The list of bundles is
provided from the keys beginning with "bundle.".

In the future, we may want to filter this list to be more specific to
the exact known keys that the server intends to share, but for
flexibility at the moment we will assume that the config values are
well-formed.

Signed-off-by: Derrick Stolee <derrickstolee@github.com>
---
 bundle-uri.c                          | 16 +++++++++++-
 t/lib-t5730-protocol-v2-bundle-uri.sh | 35 +++++++++++++++++++++++++++
 2 files changed, 50 insertions(+), 1 deletion(-)

diff --git a/bundle-uri.c b/bundle-uri.c
index 2201b604b11..3469f1aaa98 100644
--- a/bundle-uri.c
+++ b/bundle-uri.c
@@ -585,6 +585,16 @@ cached:
 	return advertise_bundle_uri;
 }
 
+static int config_to_packet_line(const char *key, const char *value, void *data)
+{
+	struct packet_reader *writer = data;
+
+	if (!strncmp(key, "bundle.", 7))
+		packet_write_fmt(writer->fd, "%s=%s", key, value);
+
+	return 0;
+}
+
 int bundle_uri_command(struct repository *r,
 		       struct packet_reader *request)
 {
@@ -596,7 +606,11 @@ int bundle_uri_command(struct repository *r,
 	if (request->status != PACKET_READ_FLUSH)
 		die(_("bundle-uri: expected flush after arguments"));
 
-	/* TODO: Implement the communication */
+	/*
+	 * Read all "bundle.*" config lines to the client as key=value
+	 * packet lines.
+	 */
+	git_config(config_to_packet_line, &writer);
 
 	packet_writer_flush(&writer);
 
diff --git a/t/lib-t5730-protocol-v2-bundle-uri.sh b/t/lib-t5730-protocol-v2-bundle-uri.sh
index c327544641b..000fcc5e20b 100644
--- a/t/lib-t5730-protocol-v2-bundle-uri.sh
+++ b/t/lib-t5730-protocol-v2-bundle-uri.sh
@@ -158,6 +158,8 @@ test_expect_success "ls-remote with $T5730_PROTOCOL:// using protocol v2" '
 	[bundle]
 		version = 1
 		mode = all
+	[bundle "only"]
+		uri = $T5730_BUNDLE_URI_ESCAPED
 	EOF
 	GIT_TRACE_PACKET="$PWD/log" \
 	test-tool bundle-uri \
@@ -181,6 +183,39 @@ test_expect_success "ls-remote with $T5730_PROTOCOL:// using protocol v2 and ext
 	[bundle]
 		version = 1
 		mode = all
+	[bundle "only"]
+		uri = $T5730_BUNDLE_URI_ESCAPED
+	EOF
+	GIT_TRACE_PACKET="$PWD/log" \
+	test-tool bundle-uri \
+		ls-remote \
+		"$T5730_URI" \
+		>actual &&
+	test_cmp_config_output expect actual
+'
+
+
+test_expect_success "ls-remote with $T5730_PROTOCOL:// using protocol v2 with list" '
+	test_when_finished "rm -f log" &&
+
+	test_config -C "$T5730_PARENT" \
+		bundle.bundle1.uri "$T5730_BUNDLE_URI_ESCAPED-1.bdl" &&
+	test_config -C "$T5730_PARENT" \
+		bundle.bundle2.uri "$T5730_BUNDLE_URI_ESCAPED-2.bdl" &&
+	test_config -C "$T5730_PARENT" \
+		bundle.bundle3.uri "$T5730_BUNDLE_URI_ESCAPED-3.bdl" &&
+
+	# All data about bundle URIs
+	cat >expect <<-EOF &&
+	[bundle]
+		version = 1
+		mode = all
+	[bundle "bundle1"]
+		uri = $T5730_BUNDLE_URI_ESCAPED-1.bdl
+	[bundle "bundle2"]
+		uri = $T5730_BUNDLE_URI_ESCAPED-2.bdl
+	[bundle "bundle3"]
+		uri = $T5730_BUNDLE_URI_ESCAPED-3.bdl
 	EOF
 	GIT_TRACE_PACKET="$PWD/log" \
 	test-tool bundle-uri \
-- 
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