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[PATCH v2 20/20] transport-helper: implement marks location as capability

From
Sverre Rabbelier <srabbelier@gmail.com>
Date
Jun 19, 2011, 15:18 UTC
Message-ID
<1308496725-22329-21-git-send-email-srabbelier@gmail.com>
In-Reply-To
<1308496725-22329-1-git-send-email-srabbelier@gmail.com>

While this requires the helper to flush stdout after listing 'gitdir' as capability, and read a command (the 'gitdir' response from the remote helper infrastructure) right after that, this is more elegant and does not require an ad-hoc exchange of values.

Signed-off-by: Sverre Rabbelier <srabbelier@gmail.com>
---
  Unchanged.
 git-remote-testgit.py |   31 ++++++++++++++++++-------------
 transport-helper.c    |   47 ++++++++++++++++++-----------------------------
 2 files changed, 36 insertions(+), 42 deletions(-)
diff --git a/git-remote-testgit.py b/git-remote-testgit.py
index 4939853..30f775e 100644
--- a/git-remote-testgit.py
+++ b/git-remote-testgit.py
@@ -71,8 +71,26 @@ def do_capabilities(repo, args):
     print "import"
     print "export"
     print "gitdir"
+
+    sys.stdout.flush()
+    if not read_one_line(repo):
+        die("Expected gitdir, got empty line")
+    if not repo.gitdir:
+        die("Expected gitdir, got something else")
+
     print "refspec refs/heads/*:%s*" % repo.prefix
 
+    dirname = repo.get_base_path(repo.gitdir)
+
+    if not os.path.exists(dirname):
+        os.makedirs(dirname)
+
+    path = os.path.join(dirname, 'testgit.marks')
+
+    print "*export-marks %s" % path
+    if os.path.exists(path):
+        print "*import-marks %s" % path
+
     print # end capabilities
 
 
@@ -142,19 +160,6 @@ def do_export(repo, args):
     if not repo.gitdir:
         die("Need gitdir to export")
 
-    dirname = repo.get_base_path(repo.gitdir)
-
-    if not os.path.exists(dirname):
-        os.makedirs(dirname)
-
-    path = os.path.join(dirname, 'testgit.marks')
-    print path
-    if os.path.exists(path):
-        print path
-    else:
-        print ""
-    sys.stdout.flush()
-
     update_local_repo(repo)
     changed = repo.importer.do_import(repo.gitdir)
 
diff --git a/transport-helper.c b/transport-helper.c
index ddf0ffa..12f08a1 100644
--- a/transport-helper.c
+++ b/transport-helper.c
@@ -23,6 +23,8 @@ struct helper_data {
 		push : 1,
 		connect : 1,
 		no_disconnect_req : 1;
+	char *export_marks;
+	char *import_marks;
 	/* These go from remote name (as in "list") to private name */
 	struct refspec *refspecs;
 	int refspec_nr;
@@ -179,6 +181,16 @@ static struct child_process *get_helper(struct transport *transport)
 			strbuf_addf(&gitdir, "gitdir %s\n", get_git_dir());
 			sendline(data, &gitdir);
 			strbuf_release(&gitdir);
+		} else if (!prefixcmp(capname, "export-marks ")) {
+			struct strbuf arg = STRBUF_INIT;
+			strbuf_addstr(&arg, "--export-marks=");
+			strbuf_addstr(&arg, capname + strlen("export-marks "));
+			data->export_marks = strbuf_detach(&arg, NULL);
+		} else if (!prefixcmp(capname, "import-marks")) {
+			struct strbuf arg = STRBUF_INIT;
+			strbuf_addstr(&arg, "--import-marks=");
+			strbuf_addstr(&arg, capname + strlen("import-marks "));
+			data->import_marks = strbuf_detach(&arg, NULL);
 		} else if (mandatory) {
 			die("Unknown mandatory capability %s. This remote "
 			    "helper probably needs newer version of Git.\n",
@@ -364,10 +376,9 @@ static int get_importer(struct transport *transport, struct child_process *fasti
 
 static int get_exporter(struct transport *transport,
 			struct child_process *fastexport,
-			const char *export_marks,
-			const char *import_marks,
 			struct string_list *revlist_args)
 {
+	struct helper_data *data = transport->data;
 	struct child_process *helper = get_helper(transport);
 	int argc = 0, i;
 	memset(fastexport, 0, sizeof(*fastexport));
@@ -378,10 +389,10 @@ static int get_exporter(struct transport *transport,
 	fastexport->argv = xcalloc(5 + revlist_args->nr, sizeof(*fastexport->argv));
 	fastexport->argv[argc++] = "fast-export";
 	fastexport->argv[argc++] = "--use-done-feature";
-	if (export_marks)
-		fastexport->argv[argc++] = export_marks;
-	if (import_marks)
-		fastexport->argv[argc++] = import_marks;
+	if (data->export_marks)
+		fastexport->argv[argc++] = data->export_marks;
+	if (data->import_marks)
+		fastexport->argv[argc++] = data->import_marks;
 
 	for (i = 0; i < revlist_args->nr; i++)
 		fastexport->argv[argc++] = revlist_args->items[i].string;
@@ -710,7 +721,6 @@ static int push_refs_with_export(struct transport *transport,
 	struct ref *ref;
 	struct child_process *helper, exporter;
 	struct helper_data *data = transport->data;
-	char *export_marks = NULL, *import_marks = NULL;
 	struct string_list revlist_args = STRING_LIST_INIT_NODUP;
 	struct strbuf buf = STRBUF_INIT;
 
@@ -718,26 +728,6 @@ static int push_refs_with_export(struct transport *transport,
 
 	write_constant(helper->in, "export\n");
 
-	recvline(data, &buf);
-	if (debug)
-		fprintf(stderr, "Debug: Got export_marks '%s'\n", buf.buf);
-	if (buf.len) {
-		struct strbuf arg = STRBUF_INIT;
-		strbuf_addstr(&arg, "--export-marks=");
-		strbuf_addbuf(&arg, &buf);
-		export_marks = strbuf_detach(&arg, NULL);
-	}
-
-	recvline(data, &buf);
-	if (debug)
-		fprintf(stderr, "Debug: Got import_marks '%s'\n", buf.buf);
-	if (buf.len) {
-		struct strbuf arg = STRBUF_INIT;
-		strbuf_addstr(&arg, "--import-marks=");
-		strbuf_addbuf(&arg, &buf);
-		import_marks = strbuf_detach(&arg, NULL);
-	}
-
 	strbuf_reset(&buf);
 
 	for (ref = remote_refs; ref; ref = ref->next) {
@@ -758,8 +748,7 @@ static int push_refs_with_export(struct transport *transport,
 
 	}
 
-	if (get_exporter(transport, &exporter,
-			 export_marks, import_marks, &revlist_args))
+	if (get_exporter(transport, &exporter, &revlist_args))
 		die("Couldn't run fast-export");
 
 	if (finish_command(&exporter))
-- 
1.7.5.1.292.g728120
Previous: Sverre RabbelierNext: Jonathan Nieder
Message 42 of 44 in “remote-helper improvements”
  1. 00/20 remote-helper improvementsSverre Rabbelier, Jun 19, 2011
  2. 01/20 transport-helper: fix minor leak in push_refs_with_exportSverre Rabbelier, Jun 19, 2011
  3. 02/20 t5800: factor out some ref testsSverre Rabbelier, Jun 19, 2011
  4. 03/20 t5800: use skip_all instead of prereqSverre Rabbelier, Jun 19, 2011
  5. 04/20 t5800: document some non-functional parts of remote helpersSverre Rabbelier, Jun 19, 2011
  6. Jonathan NiederJun 19, 2011
  7. Sverre RabbelierJul 4, 2011
  8. 05/20 teach remote-testgit to import non-HEAD refsSverre Rabbelier, Jun 19, 2011
  9. 06/20 transport-helper: don't feed bogus refs to export pushSverre Rabbelier, Jun 19, 2011
  10. 07/20 git_remote_helpers: push all refs during a non-local exportSverre Rabbelier, Jun 19, 2011
  11. 08/20 remote-curl: accept empty line as terminatorSverre Rabbelier, Jun 19, 2011
  12. Jonathan NiederJun 19, 2011
  13. Sverre RabbelierJul 4, 2011
  14. 08/20 remote-curl: accept empty line as terminatorDmitry Ivankov, Jun 20, 2011
  15. Jonathan NiederJun 20, 2011
  16. Junio C HamanoJun 20, 2011
  17. 09/20 git-remote-testgit: only push for non-local repositoriesSverre Rabbelier, Jun 19, 2011
  18. 10/20 git-remote-testgit: fix error handlingSverre Rabbelier, Jun 19, 2011
  19. Jonathan NiederJun 19, 2011
  20. Brandon CaseyJun 20, 2011
  21. Sverre RabbelierJun 20, 2011
  22. 11/20 fast-import: introduce 'done' commandSverre Rabbelier, Jun 19, 2011
  23. 12/20 fast-export: support done featureSverre Rabbelier, Jun 19, 2011
  24. 13/20 transport-helper: factor out push_update_refs_statusSverre Rabbelier, Jun 19, 2011
  25. 14/20 transport-helper: check status code of finish_commandSverre Rabbelier, Jun 19, 2011
  26. 15/20 transport-helper: use the new done feature where possibleSverre Rabbelier, Jun 19, 2011
  27. Jonathan NiederJun 20, 2011
  28. Junio C HamanoJun 20, 2011
  29. Sverre RabbelierJul 4, 2011
  30. 16/20 transport-helper: update ref status after push with exportSverre Rabbelier, Jun 19, 2011
  31. Jonathan NiederJun 19, 2011
  32. Junio C HamanoJun 21, 2011
  33. Sverre RabbelierJun 21, 2011
  34. 17/20 transport-helper: change import semanticsSverre Rabbelier, Jun 19, 2011
  35. Jonathan NiederJun 19, 2011
  36. Sverre RabbelierJul 4, 2011
  37. Jonathan NiederJul 4, 2011
  38. Sverre RabbelierJul 4, 2011
  39. Jonathan NiederJul 4, 2011
  40. 18/20 transport-helper: export is no longer always the last commandSverre Rabbelier, Jun 19, 2011
  41. 19/20 transport-helper: Use capname for gitdir capability tooSverre Rabbelier, Jun 19, 2011
  42. 20/20 transport-helper: implement marks location as capabilitySverre Rabbelier, Jun 19, 2011
  43. Jonathan NiederJun 20, 2011
  44. Sverre RabbelierJul 4, 2011

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