1 files changed, 70 insertions, 0 deletions
diff --git a/src/feature/hs/hs_metrics.h b/src/feature/hs/hs_metrics.h
new file mode 100644
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+++ b/src/feature/hs/hs_metrics.h
@@ -0,0 +1,70 @@
+/* Copyright (c) 2020, The Tor Project, Inc. */
+/* See LICENSE for licensing information */
+
+/**
+ * @file hs_metrics.h
+ * @brief Header for feature/hs/hs_metrics.c
+ **/
+
+#ifndef TOR_FEATURE_HS_HS_METRICS_H
+#define TOR_FEATURE_HS_HS_METRICS_H
+
+#include "lib/container/smartlist.h"
+#include "lib/crypt_ops/crypto_ed25519.h"
+
+#define HS_METRICS_ENTRY_PRIVATE
+#include "feature/hs/hs_metrics_entry.h"
+#include "feature/hs/hs_service.h"
+
+/* Init and Free. */
+void hs_metrics_service_init(hs_service_t *service);
+void hs_metrics_service_free(hs_service_t *service);
+
+/* Accessors. */
+const smartlist_t *hs_metrics_get_stores(void);
+
+/* Metrics Update. */
+void hs_metrics_update_by_ident(const hs_metrics_key_t key,
+                                const ed25519_public_key_t *ident_pk,
+                                const uint16_t port, int64_t n);
+void hs_metrics_update_by_service(const hs_metrics_key_t key,
+                                  hs_service_t *service, const uint16_t port,
+                                  int64_t n);
+
+/** New introducion request received. */
+#define hs_metrics_new_introduction(s) \
+  hs_metrics_update_by_service(HS_METRICS_NUM_INTRODUCTIONS, (s), 0, 1)
+
+/** Number of bytes written to the application from the service. */
+#define hs_metrics_app_write_bytes(i, port, n) \
+  hs_metrics_update_by_ident(HS_METRICS_APP_WRITE_BYTES, (i), (port), (n))
+
+/** Number of bytes read from the application to the service. */
+#define hs_metrics_app_read_bytes(i, port, n) \
+  hs_metrics_update_by_ident(HS_METRICS_APP_READ_BYTES, (i), (port), (n))
+
+/** Newly established rendezvous. This is called as soon as the circuit purpose
+ * is REND_JOINED which is when the RENDEZVOUS2 cell is sent. */
+#define hs_metrics_new_established_rdv(s) \
+  hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_RDV, (s), 0, 1)
+
+/** Established rendezvous closed. This is called when the circuit in
+ * REND_JOINED state is marked for close. */
+#define hs_metrics_close_established_rdv(i) \
+  hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_RDV, (i), 0, -1)
+
+/** New rendezvous circuit being launched. */
+#define hs_metrics_new_rdv(i) \
+  hs_metrics_update_by_ident(HS_METRICS_NUM_RDV, (i), 0, 1)
+
+/** New introduction circuit has been established. This is called when the
+ * INTRO_ESTABLISHED has been received by the service. */
+#define hs_metrics_new_established_intro(s) \
+  hs_metrics_update_by_service(HS_METRICS_NUM_ESTABLISHED_INTRO, (s), 0, 1)
+
+/** Established introduction circuit closes. This is called when
+ * INTRO_ESTABLISHED circuit is marked for close. */
+#define hs_metrics_close_established_intro(i) \
+  hs_metrics_update_by_ident(HS_METRICS_NUM_ESTABLISHED_INTRO, (i), 0, 1)
+
+#endif /* !defined(TOR_FEATURE_HS_HS_METRICS_H) */