rev-list: add optional progress reporting

diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 926d2051623be390d5de2611d81d5fe9f39a8169..b22352b6e1e4c40d1a6e182f5c12abf6351f71fb 100644 (file)
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -579,6 +579,7 @@ struct submodule_update_clone {
 
        /* configuration parameters which are passed on to the children */
        int quiet;
+       int recommend_shallow;
        const char *reference;
        const char *depth;
        const char *recursive_prefix;
@@ -589,10 +590,14 @@ struct submodule_update_clone {
 
        /* If we want to stop as fast as possible and return an error */
        unsigned quickstop : 1;
+
+       /* failed clones to be retried again */
+       const struct cache_entry **failed_clones;
+       int failed_clones_nr, failed_clones_alloc;
 };
 #define SUBMODULE_UPDATE_CLONE_INIT {0, MODULE_LIST_INIT, 0, \
-       SUBMODULE_UPDATE_STRATEGY_INIT, 0, NULL, NULL, NULL, NULL, \
-       STRING_LIST_INIT_DUP, 0}
+       SUBMODULE_UPDATE_STRATEGY_INIT, 0, -1, NULL, NULL, NULL, NULL, \
+       STRING_LIST_INIT_DUP, 0, NULL, 0, 0}
 
 
 static void next_submodule_warn_missing(struct submodule_update_clone *suc,
@@ -696,6 +701,8 @@ static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
                argv_array_push(&child->args, "--quiet");
        if (suc->prefix)
                argv_array_pushl(&child->args, "--prefix", suc->prefix, NULL);
+       if (suc->recommend_shallow && sub->recommend_shallow == 1)
+               argv_array_push(&child->args, "--depth=1");
        argv_array_pushl(&child->args, "--path", sub->path, NULL);
        argv_array_pushl(&child->args, "--name", sub->name, NULL);
        argv_array_pushl(&child->args, "--url", url, NULL);
@@ -715,23 +722,47 @@ static int prepare_to_clone_next_submodule(const struct cache_entry *ce,
 static int update_clone_get_next_task(struct child_process *child,
                                      struct strbuf *err,
                                      void *suc_cb,
-                                     void **void_task_cb)
+                                     void **idx_task_cb)
 {
        struct submodule_update_clone *suc = suc_cb;
+       const struct cache_entry *ce;
+       int index;
 
        for (; suc->current < suc->list.nr; suc->current++) {
-               const struct cache_entry *ce = suc->list.entries[suc->current];
+               ce = suc->list.entries[suc->current];
                if (prepare_to_clone_next_submodule(ce, child, suc, err)) {
+                       int *p = xmalloc(sizeof(*p));
+                       *p = suc->current;
+                       *idx_task_cb = p;
                        suc->current++;
                        return 1;
                }
        }
+
+       /*
+        * The loop above tried cloning each submodule once, now try the
+        * stragglers again, which we can imagine as an extension of the
+        * entry list.
+        */
+       index = suc->current - suc->list.nr;
+       if (index < suc->failed_clones_nr) {
+               int *p;
+               ce = suc->failed_clones[index];
+               if (!prepare_to_clone_next_submodule(ce, child, suc, err))
+                       die("BUG: ce was a submodule before?");
+               p = xmalloc(sizeof(*p));
+               *p = suc->current;
+               *idx_task_cb = p;
+               suc->current ++;
+               return 1;
+       }
+
        return 0;
 }
 
 static int update_clone_start_failure(struct strbuf *err,
                                      void *suc_cb,
-                                     void *void_task_cb)
+                                     void *idx_task_cb)
 {
        struct submodule_update_clone *suc = suc_cb;
        suc->quickstop = 1;
@@ -741,15 +772,39 @@ static int update_clone_start_failure(struct strbuf *err,
 static int update_clone_task_finished(int result,
                                      struct strbuf *err,
                                      void *suc_cb,
-                                     void *void_task_cb)
+                                     void *idx_task_cb)
 {
+       const struct cache_entry *ce;
        struct submodule_update_clone *suc = suc_cb;
 
+       int *idxP = *(int**)idx_task_cb;
+       int idx = *idxP;
+       free(idxP);
+
        if (!result)
                return 0;
 
-       suc->quickstop = 1;
-       return 1;
+       if (idx < suc->list.nr) {
+               ce  = suc->list.entries[idx];
+               strbuf_addf(err, _("Failed to clone '%s'. Retry scheduled"),
+                           ce->name);
+               strbuf_addch(err, '\n');
+               ALLOC_GROW(suc->failed_clones,
+                          suc->failed_clones_nr + 1,
+                          suc->failed_clones_alloc);
+               suc->failed_clones[suc->failed_clones_nr++] = ce;
+               return 0;
+       } else {
+               idx = suc->current - suc->list.nr;
+               ce  = suc->failed_clones[idx];
+               strbuf_addf(err, _("Failed to clone '%s' a second time, aborting"),
+                           ce->name);
+               strbuf_addch(err, '\n');
+               suc->quickstop = 1;
+               return 1;
+       }
+
+       return 0;
 }
 
 static int update_clone(int argc, const char **argv, const char *prefix)
@@ -778,6 +833,8 @@ static int update_clone(int argc, const char **argv, const char *prefix)
                              "specified number of revisions")),
                OPT_INTEGER('j', "jobs", &max_jobs,
                            N_("parallel jobs")),
+               OPT_BOOL(0, "recommend-shallow", &suc.recommend_shallow,
+                           N_("whether the initial clone should follow the shallow recommendation")),
                OPT__QUIET(&suc.quiet, N_("don't print cloning progress")),
                OPT_END()
        };