metrics: New feature module to track tor metrics

Related to #40063

Signed-off-by: David Goulet <dgoulet@torproject.org>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/feature/metrics/metrics_sys.c b/src/feature/metrics/metrics_sys.c
new file mode 100644
index 0000000000..419318068e
--- /dev/null
+++ b/src/feature/metrics/metrics_sys.c
@@ -0,0 +1,37 @@
+/* Copyright (c) 2020, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * @file metrics_sys.c
+ * @brief Setup and tear down the metrics subsystem.
+ **/
+
+#include "lib/subsys/subsys.h"
+
+#include "feature/metrics/metrics.h"
+#include "feature/metrics/metrics_sys.h"
+
+static int
+subsys_metrics_initialize(void)
+{
+  metrics_init();
+  return 0;
+}
+
+static void
+subsys_metrics_shutdown(void)
+{
+  metrics_cleanup();
+}
+
+const subsys_fns_t sys_metrics = {
+  SUBSYS_DECLARE_LOCATION(),
+
+  .name = "metrics",
+  .supported = true,
+  .level = METRICS_SUBSYS_LEVEL,
+
+  .initialize = subsys_metrics_initialize,
+  .shutdown = subsys_metrics_shutdown,
+};
+