[PATCH 17/17] fetch: add fetch.writeCommitGraph config setting

[Derrick Stolee via GitGitGadget]

From: Derrick Stolee <dsto...@microsoft.com>

Signed-off-by: Derrick Stolee <dsto...@microsoft.com>
---
 builtin/fetch.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/builtin/fetch.c b/builtin/fetch.c
index b620fd54b4..cf0944bad5 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -23,6 +23,7 @@
 #include "packfile.h"
 #include "list-objects-filter-options.h"
 #include "commit-reach.h"
+#include "commit-graph.h"
 
 static const char * const builtin_fetch_usage[] = {
        N_("git fetch [<options>] [<repository> [<refspec>...]]"),
@@ -62,6 +63,7 @@ static const char *submodule_prefix = "";
 static int recurse_submodules = RECURSE_SUBMODULES_DEFAULT;
 static int recurse_submodules_default = RECURSE_SUBMODULES_ON_DEMAND;
 static int shown_url = 0;
+static int fetch_write_commit_graph = 0;
 static struct refspec refmap = REFSPEC_INIT_FETCH;
 static struct list_objects_filter_options filter_options;
 static struct string_list server_options = STRING_LIST_INIT_DUP;
@@ -79,6 +81,11 @@ static int git_fetch_config(const char *k, const char *v, 
void *cb)
                return 0;
        }
 
+       if (!strcmp(k, "fetch.writecommitgraph")) {
+               fetch_write_commit_graph = 1;
+               return 0;
+       }
+
        if (!strcmp(k, "submodule.recurse")) {
                int r = git_config_bool(k, v) ?
                        RECURSE_SUBMODULES_ON : RECURSE_SUBMODULES_OFF;
@@ -1670,6 +1677,16 @@ int cmd_fetch(int argc, const char **argv, const char 
*prefix)
 
        string_list_clear(&list, 0);
 
+       if (fetch_write_commit_graph) {
+               int commit_graph_flags = COMMIT_GRAPH_SPLIT;
+
+               if (progress)
+                       commit_graph_flags |= COMMIT_GRAPH_PROGRESS;
+
+               write_commit_graph_reachable(get_object_directory(),
+                                            commit_graph_flags);
+       }
+
        close_all_packs(the_repository->objects);
 
        argv_array_pushl(&argv_gc_auto, "gc", "--auto", NULL);
-- 
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