[PATCH 07/15] config: add job.pack-files.batchSize option

["Derrick Stolee via GitGitGadget" <gitgitgadget@gmail.com>]

From: Derrick Stolee <dstolee@microsoft.com>

The previous change allowed a user to specify a --batch-size=<size>
option to 'git run-job pack-files'. However, when we eventually
launch these jobs on a schedule, we want users to be able to change
this value through config options.

The new "job.pack-files.batchSize" option will override the default
dynamic batch-size calculation, but will be overridden by the
--batch-size=<size> argument.

This is the first config option of the type
"job.<job-name>.<option>" but is not the last.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
---
 Documentation/config.txt     | 2 ++
 Documentation/config/job.txt | 6 ++++++
 builtin/run-job.c            | 7 ++++++-
 3 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 Documentation/config/job.txt

diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2450589a0ed..c4c5fa99e6b 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -389,6 +389,8 @@ include::config/instaweb.txt[]
 
 include::config/interactive.txt[]
 
+include::config/job.txt[]
+
 include::config/log.txt[]
 
 include::config/mailinfo.txt[]
diff --git a/Documentation/config/job.txt b/Documentation/config/job.txt
new file mode 100644
index 00000000000..efdb76afad3
--- /dev/null
+++ b/Documentation/config/job.txt
@@ -0,0 +1,6 @@
+job.pack-files.batchSize::
+	This string value `<size>` will be passed to the
+	`git multi-pack-index repack --batch-size=<size>` command as
+	part of `git run-job pack-files`. If not specified, then a
+	dynamic size calculation is run. See linkgit:git-run-job[1]
+	for more details.
diff --git a/builtin/run-job.c b/builtin/run-job.c
index 2ccc3bbae2d..76765535e09 100644
--- a/builtin/run-job.c
+++ b/builtin/run-job.c
@@ -327,6 +327,7 @@ static int multi_pack_index_repack(unsigned long batch_size)
 	int result;
 	struct argv_array cmd = ARGV_ARRAY_INIT;
 	struct strbuf batch_arg = STRBUF_INIT;
+	const char *config_value;
 	int count;
 	off_t default_size = get_auto_pack_size(&count);
 
@@ -336,7 +337,11 @@ static int multi_pack_index_repack(unsigned long batch_size)
 	strbuf_addstr(&batch_arg, "--batch-size=");
 
 	if (batch_size != UNSET_BATCH_SIZE)
-		strbuf_addf(&batch_arg, "\"%"PRIuMAX"\"", (uintmax_t)batch_size);
+		strbuf_addf(&batch_arg, "\"%"PRIuMAX"\"", (uintmax_t) batch_size);
+	else if (!repo_config_get_string_const(the_repository,
+					       "job.pack-file.batchsize",
+					       &config_value))
+		strbuf_addf(&batch_arg, "\"%s\"", config_value);
 	else
 		strbuf_addf(&batch_arg, "%"PRIuMAX,
 			    (uintmax_t)default_size);
-- 
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