maintenance: add --task option
A user may want to only run certain maintenance tasks in a certain
order. Add the --task=<task> option, which allows a user to specify an
ordered list of tasks to run. These cannot be run multiple times,
however.
Here is where our array of maintenance_task pointers becomes critical.
We can sort the array of pointers based on the task order, but we do not
want to move the struct data itself in order to preserve the hashmap
references. We use the hashmap to match the --task=<task> arguments into
the task struct data.
Keep in mind that the 'enabled' member of the maintenance_task struct is
a placeholder for a future 'maintenance.<task>.enabled' config option.
Thus, we use the 'enabled' member to specify which tasks are run when
the user does not specify any --task=<task> arguments. The 'enabled'
member should be ignored if --task=<task> appears.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/t/t7900-maintenance.sh b/t/t7900-maintenance.sh
index 505a1b4..fb4cadd 100755
--- a/t/t7900-maintenance.sh
+++ b/t/t7900-maintenance.sh
@@ -27,4 +27,31 @@
test_subcommand git gc --no-quiet <run-no-quiet.txt
'
+test_expect_success 'run --task=<task>' '
+ GIT_TRACE2_EVENT="$(pwd)/run-commit-graph.txt" \
+ git maintenance run --task=commit-graph 2>/dev/null &&
+ GIT_TRACE2_EVENT="$(pwd)/run-gc.txt" \
+ git maintenance run --task=gc 2>/dev/null &&
+ GIT_TRACE2_EVENT="$(pwd)/run-commit-graph.txt" \
+ git maintenance run --task=commit-graph 2>/dev/null &&
+ GIT_TRACE2_EVENT="$(pwd)/run-both.txt" \
+ git maintenance run --task=commit-graph --task=gc 2>/dev/null &&
+ test_subcommand ! git gc --quiet <run-commit-graph.txt &&
+ test_subcommand git gc --quiet <run-gc.txt &&
+ test_subcommand git gc --quiet <run-both.txt &&
+ test_subcommand git commit-graph write --split --reachable --no-progress <run-commit-graph.txt &&
+ test_subcommand ! git commit-graph write --split --reachable --no-progress <run-gc.txt &&
+ test_subcommand git commit-graph write --split --reachable --no-progress <run-both.txt
+'
+
+test_expect_success 'run --task=bogus' '
+ test_must_fail git maintenance run --task=bogus 2>err &&
+ test_i18ngrep "is not a valid task" err
+'
+
+test_expect_success 'run --task duplicate' '
+ test_must_fail git maintenance run --task=gc --task=gc 2>err &&
+ test_i18ngrep "cannot be selected multiple times" err
+'
+
test_done
