Merge branch 'hv/submodule-recurse-push'
authorJunio C Hamano <gitster@pobox.com>
Tue, 24 Apr 2012 21:40:20 +0000 (14:40 -0700)
committerJunio C Hamano <gitster@pobox.com>
Tue, 24 Apr 2012 21:40:20 +0000 (14:40 -0700)
"git push --recurse-submodules" learns to optionally look into the
histories of submodules bound to the superproject and push them out.

By Heiko Voigt
* hv/submodule-recurse-push:
push: teach --recurse-submodules the on-demand option
Refactor submodule push check to use string list instead of integer
Teach revision walking machinery to walk multiple times sequencially

16 files changed:
.gitignore
Documentation/git-push.txt
Documentation/technical/api-revision-walking.txt
Makefile
builtin/push.c
object.c
object.h
revision.c
revision.h
submodule.c
submodule.h
t/t0062-revision-walking.sh [new file with mode: 0755]
t/t5531-deep-submodule-push.sh
test-revision-walking.c [new file with mode: 0644]
transport.c
transport.h
index 83a5c9df1b2c21e21be9375ac01be94c8dcf941a..1dbeb668dbdcf13ccdbb532e4314c901ae6f7d1c 100644 (file)
 /test-mktemp
 /test-parse-options
 /test-path-utils
+/test-revision-walking
 /test-run-command
 /test-sha1
 /test-sigchain
index 48760db3371ef762fe6e0f099045c208206742f1..a52b7b1a1985ae84d1de8f0cfd107928c648d469 100644 (file)
@@ -170,10 +170,16 @@ useful if you write an alias or script around 'git push'.
        is specified. This flag forces progress status even if the
        standard error stream is not directed to a terminal.
 
---recurse-submodules=check::
-       Check whether all submodule commits used by the revisions to be
-       pushed are available on a remote tracking branch. Otherwise the
-       push will be aborted and the command will exit with non-zero status.
+--recurse-submodules=check|on-demand::
+       Make sure all submodule commits used by the revisions to be
+       pushed are available on a remote tracking branch. If 'check' is
+       used git will verify that all submodule commits that changed in
+       the revisions to be pushed are available on at least one remote
+       of the submodule. If any commits are missing the push will be
+       aborted and exit with non-zero status. If 'on-demand' is used
+       all submodules that changed in the revisions to be pushed will
+       be pushed. If on-demand was not able to push all necessary
+       revisions it will also be aborted and exit with non-zero status.
 
 
 include::urls-remotes.txt[]
index 996da0503acfa3e3a0ed0f57a951d0fbc1500fb8..b7d0d9a8a7b45f4988c0ee8170fec25c415cc918 100644 (file)
@@ -56,6 +56,11 @@ function.
        returning a `struct commit *` each time you call it. The end of the
        revision list is indicated by returning a NULL pointer.
 
+`reset_revision_walk`::
+
+       Reset the flags used by the revision walking api. You can use
+       this to do multiple sequencial revision walks.
+
 Data structures
 ---------------
 
index f1caae8a827e7381df8226b36485409dfca71642..d6748e075434e355180fba7ccfaf72299a332fb9 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -485,6 +485,7 @@ TEST_PROGRAMS_NEED_X += test-mergesort
 TEST_PROGRAMS_NEED_X += test-mktemp
 TEST_PROGRAMS_NEED_X += test-parse-options
 TEST_PROGRAMS_NEED_X += test-path-utils
+TEST_PROGRAMS_NEED_X += test-revision-walking
 TEST_PROGRAMS_NEED_X += test-run-command
 TEST_PROGRAMS_NEED_X += test-sha1
 TEST_PROGRAMS_NEED_X += test-sigchain
index 693671315ee11313ca98209ebf28fdeffb13f636..19c40d7a55199984d7cdc1efbacfca7b628a4d20 100644 (file)
@@ -284,13 +284,21 @@ static int option_parse_recurse_submodules(const struct option *opt,
                                   const char *arg, int unset)
 {
        int *flags = opt->value;
+
+       if (*flags & (TRANSPORT_RECURSE_SUBMODULES_CHECK |
+                     TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND))
+               die("%s can only be used once.", opt->long_name);
+
        if (arg) {
                if (!strcmp(arg, "check"))
                        *flags |= TRANSPORT_RECURSE_SUBMODULES_CHECK;
+               else if (!strcmp(arg, "on-demand"))
+                       *flags |= TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND;
                else
                        die("bad %s argument: %s", opt->long_name, arg);
        } else
-               die("option %s needs an argument (check)", opt->long_name);
+               die("option %s needs an argument (check|on-demand)",
+                               opt->long_name);
 
        return 0;
 }
index 0498b18d451b2335d21e2db3edc0ce7838aaa50e..49a864ce54e6ca0f21ad86aab27a422570d1bcec 100644 (file)
--- a/object.c
+++ b/object.c
@@ -286,3 +286,14 @@ void object_array_remove_duplicates(struct object_array *array)
                array->nr = dst;
        }
 }
+
+void clear_object_flags(unsigned flags)
+{
+       int i;
+
+       for (i=0; i < obj_hash_size; i++) {
+               struct object *obj = obj_hash[i];
+               if (obj)
+                       obj->flags &= ~flags;
+       }
+}
index b6618d92bf04d549350d83b6237770c48734686f..6a97b6ba1a43e1d38eb07515ad298e0067628127 100644 (file)
--- a/object.h
+++ b/object.h
@@ -76,4 +76,6 @@ void add_object_array(struct object *obj, const char *name, struct object_array
 void add_object_array_with_mode(struct object *obj, const char *name, struct object_array *array, unsigned mode);
 void object_array_remove_duplicates(struct object_array *);
 
+void clear_object_flags(unsigned flags);
+
 #endif /* OBJECT_H */
index 92095f5fcbb4454b3d605d2cdd6c9a1567498562..edb225d1fa2e572cacf467f1706f203ee02ddda7 100644 (file)
@@ -2062,6 +2062,11 @@ static void set_children(struct rev_info *revs)
        }
 }
 
+void reset_revision_walk(void)
+{
+       clear_object_flags(SEEN | ADDED | SHOWN);
+}
+
 int prepare_revision_walk(struct rev_info *revs)
 {
        int nr = revs->pending.nr;
index b8e9223954a5d66e01bd1eb342a936495aa67ad1..eb87fd1e2f5d16032cb92d96c4bae9e2397f2978 100644 (file)
@@ -192,6 +192,7 @@ extern void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ct
                                 const char * const usagestr[]);
 extern int handle_revision_arg(const char *arg, struct rev_info *revs,int flags,int cant_be_filename);
 
+extern void reset_revision_walk(void);
 extern int prepare_revision_walk(struct rev_info *revs);
 extern struct commit *get_revision(struct rev_info *revs);
 extern char *get_revision_mark(const struct rev_info *revs, const struct commit *commit);
index 9a2806067954c55a27c068706b5bfe67a1189fd5..784b58039dd078fc1e0c4554820cd0e99c8e41d2 100644 (file)
@@ -357,21 +357,19 @@ static void collect_submodules_from_diff(struct diff_queue_struct *q,
                                         void *data)
 {
        int i;
-       int *needs_pushing = data;
+       struct string_list *needs_pushing = data;
 
        for (i = 0; i < q->nr; i++) {
                struct diff_filepair *p = q->queue[i];
                if (!S_ISGITLINK(p->two->mode))
                        continue;
-               if (submodule_needs_pushing(p->two->path, p->two->sha1)) {
-                       *needs_pushing = 1;
-                       break;
-               }
+               if (submodule_needs_pushing(p->two->path, p->two->sha1))
+                       string_list_insert(needs_pushing, p->two->path);
        }
 }
 
-
-static void commit_need_pushing(struct commit *commit, int *needs_pushing)
+static void find_unpushed_submodule_commits(struct commit *commit,
+               struct string_list *needs_pushing)
 {
        struct rev_info rev;
 
@@ -382,14 +380,15 @@ static void commit_need_pushing(struct commit *commit, int *needs_pushing)
        diff_tree_combined_merge(commit, 1, &rev);
 }
 
-int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remotes_name)
+int find_unpushed_submodules(unsigned char new_sha1[20],
+               const char *remotes_name, struct string_list *needs_pushing)
 {
        struct rev_info rev;
        struct commit *commit;
        const char *argv[] = {NULL, NULL, "--not", "NULL", NULL};
        int argc = ARRAY_SIZE(argv) - 1;
        char *sha1_copy;
-       int needs_pushing = 0;
+
        struct strbuf remotes_arg = STRBUF_INIT;
 
        strbuf_addf(&remotes_arg, "--remotes=%s", remotes_name);
@@ -401,13 +400,62 @@ int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remote
        if (prepare_revision_walk(&rev))
                die("revision walk setup failed");
 
-       while ((commit = get_revision(&rev)) && !needs_pushing)
-               commit_need_pushing(commit, &needs_pushing);
+       while ((commit = get_revision(&rev)) != NULL)
+               find_unpushed_submodule_commits(commit, needs_pushing);
 
+       reset_revision_walk();
        free(sha1_copy);
        strbuf_release(&remotes_arg);
 
-       return needs_pushing;
+       return needs_pushing->nr;
+}
+
+static int push_submodule(const char *path)
+{
+       if (add_submodule_odb(path))
+               return 1;
+
+       if (for_each_remote_ref_submodule(path, has_remote, NULL) > 0) {
+               struct child_process cp;
+               const char *argv[] = {"push", NULL};
+
+               memset(&cp, 0, sizeof(cp));
+               cp.argv = argv;
+               cp.env = local_repo_env;
+               cp.git_cmd = 1;
+               cp.no_stdin = 1;
+               cp.dir = path;
+               if (run_command(&cp))
+                       return 0;
+               close(cp.out);
+       }
+
+       return 1;
+}
+
+int push_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name)
+{
+       int i, ret = 1;
+       struct string_list needs_pushing;
+
+       memset(&needs_pushing, 0, sizeof(struct string_list));
+       needs_pushing.strdup_strings = 1;
+
+       if (!find_unpushed_submodules(new_sha1, remotes_name, &needs_pushing))
+               return 1;
+
+       for (i = 0; i < needs_pushing.nr; i++) {
+               const char *path = needs_pushing.items[i].string;
+               fprintf(stderr, "Pushing submodule '%s'\n", path);
+               if (!push_submodule(path)) {
+                       fprintf(stderr, "Unable to push submodule '%s'\n", path);
+                       ret = 0;
+               }
+       }
+
+       string_list_clear(&needs_pushing, 0);
+
+       return ret;
 }
 
 static int is_submodule_commit_present(const char *path, unsigned char sha1[20])
@@ -741,6 +789,7 @@ static int find_first_merges(struct object_array *result, const char *path,
                if (in_merge_bases(b, &commit, 1))
                        add_object_array(o, NULL, &merges);
        }
+       reset_revision_walk();
 
        /* Now we've got all merges that contain a and b. Prune all
         * merges that contain another found merge and save them in
index 9c5e5c0c30676d5dc8be685c97b7d7f303dd7842..e105b0ebe6c06a03af7f82bdfbc9beb66377544f 100644 (file)
@@ -29,6 +29,8 @@ int fetch_populated_submodules(int num_options, const char **options,
 unsigned is_submodule_modified(const char *path, int ignore_untracked);
 int merge_submodule(unsigned char result[20], const char *path, const unsigned char base[20],
                    const unsigned char a[20], const unsigned char b[20], int search);
-int check_submodule_needs_pushing(unsigned char new_sha1[20], const char *remotes_name);
+int find_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name,
+               struct string_list *needs_pushing);
+int push_unpushed_submodules(unsigned char new_sha1[20], const char *remotes_name);
 
 #endif
diff --git a/t/t0062-revision-walking.sh b/t/t0062-revision-walking.sh
new file mode 100755 (executable)
index 0000000..3d98eb8
--- /dev/null
@@ -0,0 +1,33 @@
+#!/bin/sh
+#
+# Copyright (c) 2012 Heiko Voigt
+#
+
+test_description='Test revision walking api'
+
+. ./test-lib.sh
+
+cat >run_twice_expected <<-EOF
+1st
+ > add b
+ > add a
+2nd
+ > add b
+ > add a
+EOF
+
+test_expect_success 'setup' '
+       echo a > a &&
+       git add a &&
+       git commit -m "add a" &&
+       echo b > b &&
+       git add b &&
+       git commit -m "add b"
+'
+
+test_expect_success 'revision walking can be done twice' '
+       test-revision-walking run-twice > run_twice_actual
+       test_cmp run_twice_expected run_twice_actual
+'
+
+test_done
index 30bec4b5f9f286cd97c57b70e3635c6c5c8cf85a..1947c28c6466d46c79c7b1b093488c1620324172 100755 (executable)
@@ -119,4 +119,98 @@ test_expect_success 'push succeeds if submodule has no remote and is on the firs
        )
 '
 
+test_expect_success 'push unpushed submodules when not needed' '
+       (
+               cd work &&
+               (
+                       cd gar/bage &&
+                       git checkout master &&
+                       >junk5 &&
+                       git add junk5 &&
+                       git commit -m "Fifth junk" &&
+                       git push &&
+                       git rev-parse origin/master >../../../expected
+               ) &&
+               git checkout master &&
+               git add gar/bage &&
+               git commit -m "Fifth commit for gar/bage" &&
+               git push --recurse-submodules=on-demand ../pub.git master
+       ) &&
+       (
+               cd submodule.git &&
+               git rev-parse master >../actual
+       ) &&
+       test_cmp expected actual
+'
+
+test_expect_success 'push unpushed submodules when not needed 2' '
+       (
+               cd submodule.git &&
+               git rev-parse master >../expected
+       ) &&
+       (
+               cd work &&
+               (
+                       cd gar/bage &&
+                       >junk6 &&
+                       git add junk6 &&
+                       git commit -m "Sixth junk"
+               ) &&
+               >junk2 &&
+               git add junk2 &&
+               git commit -m "Second junk for work" &&
+               git push --recurse-submodules=on-demand ../pub.git master
+       ) &&
+       (
+               cd submodule.git &&
+               git rev-parse master >../actual
+       ) &&
+       test_cmp expected actual
+'
+
+test_expect_success 'push unpushed submodules recursively' '
+       (
+               cd work &&
+               (
+                       cd gar/bage &&
+                       git checkout master &&
+                       > junk7 &&
+                       git add junk7 &&
+                       git commit -m "Seventh junk" &&
+                       git rev-parse master >../../../expected
+               ) &&
+               git checkout master &&
+               git add gar/bage &&
+               git commit -m "Seventh commit for gar/bage" &&
+               git push --recurse-submodules=on-demand ../pub.git master
+       ) &&
+       (
+               cd submodule.git &&
+               git rev-parse master >../actual
+       ) &&
+       test_cmp expected actual
+'
+
+test_expect_success 'push unpushable submodule recursively fails' '
+       (
+               cd work &&
+               (
+                       cd gar/bage &&
+                       git rev-parse origin/master >../../../expected &&
+                       git checkout master~0 &&
+                       > junk8 &&
+                       git add junk8 &&
+                       git commit -m "Eighth junk"
+               ) &&
+               git add gar/bage &&
+               git commit -m "Eighth commit for gar/bage" &&
+               test_must_fail git push --recurse-submodules=on-demand ../pub.git master
+       ) &&
+       (
+               cd submodule.git &&
+               git rev-parse master >../actual
+       ) &&
+       test_cmp expected actual
+'
+
 test_done
diff --git a/test-revision-walking.c b/test-revision-walking.c
new file mode 100644 (file)
index 0000000..3ade02c
--- /dev/null
@@ -0,0 +1,66 @@
+/*
+ * test-revision-walking.c: test revision walking API.
+ *
+ * (C) 2012 Heiko Voigt <hvoigt@hvoigt.net>
+ *
+ * This code is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include "cache.h"
+#include "commit.h"
+#include "diff.h"
+#include "revision.h"
+
+static void print_commit(struct commit *commit)
+{
+       struct strbuf sb = STRBUF_INIT;
+       struct pretty_print_context ctx = {0};
+       ctx.date_mode = DATE_NORMAL;
+       format_commit_message(commit, " %m %s", &sb, &ctx);
+       printf("%s\n", sb.buf);
+       strbuf_release(&sb);
+}
+
+static int run_revision_walk(void)
+{
+       struct rev_info rev;
+       struct commit *commit;
+       const char *argv[] = {NULL, "--all", NULL};
+       int argc = ARRAY_SIZE(argv) - 1;
+       int got_revision = 0;
+
+       init_revisions(&rev, NULL);
+       setup_revisions(argc, argv, &rev, NULL);
+       if (prepare_revision_walk(&rev))
+               die("revision walk setup failed");
+
+       while ((commit = get_revision(&rev)) != NULL) {
+               print_commit(commit);
+               got_revision = 1;
+       }
+
+       reset_revision_walk();
+       return got_revision;
+}
+
+int main(int argc, char **argv)
+{
+       if (argc < 2)
+               return 1;
+
+       if (!strcmp(argv[1], "run-twice")) {
+               printf("1st\n");
+               if (!run_revision_walk())
+                       return 1;
+               printf("2nd\n");
+               if (!run_revision_walk())
+                       return 1;
+
+               return 0;
+       }
+
+       fprintf(stderr, "check usage\n");
+       return 1;
+}
index 2dfac700b630aabb2d1014c51a08889b3a3bae82..1811b500d92b1120a01d0ac09f86c0218f3d163b 100644 (file)
@@ -11,6 +11,7 @@
 #include "branch.h"
 #include "url.h"
 #include "submodule.h"
+#include "string-list.h"
 
 /* rsync support */
 
@@ -1013,6 +1014,25 @@ void transport_set_verbosity(struct transport *transport, int verbosity,
                transport->progress = verbosity >= 0 && isatty(2);
 }
 
+static void die_with_unpushed_submodules(struct string_list *needs_pushing)
+{
+       int i;
+
+       fprintf(stderr, "The following submodule paths contain changes that can\n"
+                       "not be found on any remote:\n");
+       for (i = 0; i < needs_pushing->nr; i++)
+               printf("  %s\n", needs_pushing->items[i].string);
+       fprintf(stderr, "\nPlease try\n\n"
+                       "       git push --recurse-submodules=on-demand\n\n"
+                       "or cd to the path and use\n\n"
+                       "       git push\n\n"
+                       "to push them to a remote.\n\n");
+
+       string_list_clear(needs_pushing, 0);
+
+       die("Aborting.");
+}
+
 int transport_push(struct transport *transport,
                   int refspec_nr, const char **refspec, int flags,
                   int *nonfastforward)
@@ -1053,12 +1073,27 @@ int transport_push(struct transport *transport,
                        flags & TRANSPORT_PUSH_MIRROR,
                        flags & TRANSPORT_PUSH_FORCE);
 
-               if ((flags & TRANSPORT_RECURSE_SUBMODULES_CHECK) && !is_bare_repository()) {
+               if ((flags & TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND) && !is_bare_repository()) {
                        struct ref *ref = remote_refs;
                        for (; ref; ref = ref->next)
                                if (!is_null_sha1(ref->new_sha1) &&
-                                   check_submodule_needs_pushing(ref->new_sha1,transport->remote->name))
-                                       die("There are unpushed submodules, aborting.");
+                                   !push_unpushed_submodules(ref->new_sha1,
+                                           transport->remote->name))
+                                   die ("Failed to push all needed submodules!");
+               }
+
+               if ((flags & (TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND |
+                             TRANSPORT_RECURSE_SUBMODULES_CHECK)) && !is_bare_repository()) {
+                       struct ref *ref = remote_refs;
+                       struct string_list needs_pushing;
+
+                       memset(&needs_pushing, 0, sizeof(struct string_list));
+                       needs_pushing.strdup_strings = 1;
+                       for (; ref; ref = ref->next)
+                               if (!is_null_sha1(ref->new_sha1) &&
+                                   find_unpushed_submodules(ref->new_sha1,
+                                           transport->remote->name, &needs_pushing))
+                                       die_with_unpushed_submodules(&needs_pushing);
                }
 
                push_ret = transport->push_refs(transport, remote_refs, flags);
index 1631a35ea6332fb07e993ce42042ba9c8d037a21..b866c126e695810131cdab537b8b994c0c32e14e 100644 (file)
@@ -103,6 +103,7 @@ struct transport {
 #define TRANSPORT_PUSH_SET_UPSTREAM 32
 #define TRANSPORT_RECURSE_SUBMODULES_CHECK 64
 #define TRANSPORT_PUSH_PRUNE 128
+#define TRANSPORT_RECURSE_SUBMODULES_ON_DEMAND 256
 
 #define TRANSPORT_SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)