diff options
| -rw-r--r-- | Documentation/gitremote-helpers.txt | 5 | ||||
| -rw-r--r-- | remote-curl.c | 13 | ||||
| -rwxr-xr-x | t/t5541-http-push-smart.sh | 40 | ||||
| -rw-r--r-- | transport-helper.c | 4 | ||||
| -rw-r--r-- | transport.h | 3 |
5 files changed, 62 insertions, 3 deletions
diff --git a/Documentation/gitremote-helpers.txt b/Documentation/gitremote-helpers.txt index 43f80c8068..03b3a6883f 100644 --- a/Documentation/gitremote-helpers.txt +++ b/Documentation/gitremote-helpers.txt @@ -505,6 +505,11 @@ set by Git if the remote helper has the 'option' capability. Indicate that only the objects wanted need to be fetched, not their dependents. +'option atomic' {'true'|'false'}:: + When pushing, request the remote server to update refs in a single atomic + transaction. If successful, all refs will be updated, or none will. If the + remote side does not support this capability, the push will fail. + SEE ALSO -------- linkgit:git-remote[1] diff --git a/remote-curl.c b/remote-curl.c index 051f26629d..5232ed84b6 100644 --- a/remote-curl.c +++ b/remote-curl.c @@ -40,7 +40,8 @@ struct options { push_cert : 2, deepen_relative : 1, from_promisor : 1, - no_dependents : 1; + no_dependents : 1, + atomic : 1; }; static struct options options; static struct string_list cas_options = STRING_LIST_INIT_DUP; @@ -148,6 +149,14 @@ static int set_option(const char *name, const char *value) else return -1; return 0; + } else if (!strcmp(name, "atomic")) { + if (!strcmp(value, "true")) + options.atomic = 1; + else if (!strcmp(value, "false")) + options.atomic = 0; + else + return -1; + return 0; } else if (!strcmp(name, "push-option")) { if (*value != '"') string_list_append(&options.push_options, value); @@ -1196,6 +1205,8 @@ static int push_git(struct discovery *heads, int nr_spec, char **specs) argv_array_push(&args, "--signed=yes"); else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED) argv_array_push(&args, "--signed=if-asked"); + if (options.atomic) + argv_array_push(&args, "--atomic"); if (options.verbosity == 0) argv_array_push(&args, "--quiet"); else if (options.verbosity > 1) diff --git a/t/t5541-http-push-smart.sh b/t/t5541-http-push-smart.sh index b86ddb60f2..3aec962cd8 100755 --- a/t/t5541-http-push-smart.sh +++ b/t/t5541-http-push-smart.sh @@ -184,11 +184,12 @@ test_expect_success 'push --atomic also prevents branch creation, reports collat test_config -C "$d" http.receivepack true && up="$HTTPD_URL"/smart/atomic-branches.git && - # Tell "$up" about two branches for now + # Tell "$up" about three branches for now test_commit atomic1 && test_commit atomic2 && git branch collateral && - git push "$up" master collateral && + git branch other && + git push "$up" master collateral other && # collateral is a valid push, but should be failed by atomic push git checkout collateral && @@ -226,6 +227,41 @@ test_expect_success 'push --atomic also prevents branch creation, reports collat grep "^ ! .*rejected.* collateral -> collateral .*atomic push failed" output ' +test_expect_success 'push --atomic fails on server-side errors' ' + # Use previously set up repository + d=$HTTPD_DOCUMENT_ROOT_PATH/atomic-branches.git && + test_config -C "$d" http.receivepack true && + up="$HTTPD_URL"/smart/atomic-branches.git && + + # break ref updates for other on the remote site + mkdir "$d/refs/heads/other.lock" && + + # add the new commit to other + git branch -f other collateral && + + # --atomic should cause entire push to be rejected + test_must_fail git push --atomic "$up" atomic other 2>output && + + # the new branch should not have been created upstream + test_must_fail git -C "$d" show-ref --verify refs/heads/atomic && + + # upstream should still reflect atomic2, the last thing we pushed + # successfully + git rev-parse atomic2 >expected && + # ...to other. + git -C "$d" rev-parse refs/heads/other >actual && + test_cmp expected actual && + + # the new branch should not have been created upstream + test_must_fail git -C "$d" show-ref --verify refs/heads/atomic && + + # the failed refs should be indicated to the user + grep "^ ! .*rejected.* other -> other .*atomic transaction failed" output && + + # the collateral failure refs should be indicated to the user + grep "^ ! .*rejected.* atomic -> atomic .*atomic transaction failed" output +' + test_expect_success 'push --all can push to empty repo' ' d=$HTTPD_DOCUMENT_ROOT_PATH/empty-all.git && git init --bare "$d" && diff --git a/transport-helper.c b/transport-helper.c index 6b05a88faf..1ecaa9101a 100644 --- a/transport-helper.c +++ b/transport-helper.c @@ -840,6 +840,10 @@ static void set_common_push_options(struct transport *transport, die(_("helper %s does not support --signed=if-asked"), name); } + if (flags & TRANSPORT_PUSH_ATOMIC) + if (set_helper_option(transport, TRANS_OPT_ATOMIC, "true") != 0) + die(_("helper %s does not support --atomic"), name); + if (flags & TRANSPORT_PUSH_OPTIONS) { struct string_list_item *item; for_each_string_list_item(item, transport->push_options) diff --git a/transport.h b/transport.h index 0b5f7806f6..e0131daab9 100644 --- a/transport.h +++ b/transport.h @@ -208,6 +208,9 @@ void transport_check_allowed(const char *type); /* Filter objects for partial clone and fetch */ #define TRANS_OPT_LIST_OBJECTS_FILTER "filter" +/* Request atomic (all-or-nothing) updates when pushing */ +#define TRANS_OPT_ATOMIC "atomic" + /** * Returns 0 if the option was used, non-zero otherwise. Prints a * message to stderr if the option is not used. |