Adds metrics for ACLK performance and status (#9269)

Adds ACLK charts

1 files changed, 51 insertions, 0 deletions

diff --git a/aclk/aclk_stats.h b/aclk/aclk_stats.h
new file mode 100644
index 0000000000..f2a5b1a518
--- /dev/null
+++ b/aclk/aclk_stats.h
@@ -0,0 +1,51 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_ACLK_STATS_H
+#define NETDATA_ACLK_STATS_H
+
+#include "../daemon/common.h"
+#include "libnetdata/libnetdata.h"
+
+#define ACLK_STATS_THREAD_NAME "ACLK_Stats"
+
+extern netdata_mutex_t aclk_stats_mutex;
+
+#define ACLK_STATS_LOCK netdata_mutex_lock(&aclk_stats_mutex)
+#define ACLK_STATS_UNLOCK netdata_mutex_unlock(&aclk_stats_mutex)
+
+extern int aclk_stats_enabled;
+
+// preserve between samples
+struct aclk_metrics {
+    volatile uint8_t online;
+};
+
+// reset to 0 on every sample
+extern struct aclk_metrics_per_sample {
+    /* in the unlikely event of ACLK disconnecting
+       and reconnecting under 1 sampling rate
+       we want to make sure we record the disconnection
+       despite it being then seemingly longer in graph */
+    volatile uint8_t offline_during_sample;
+
+    volatile uint8_t queries_queued;
+    volatile uint8_t queries_dispatched;
+#ifdef NETDATA_INTERNAL_CHECKS
+    volatile uint32_t latency_max;
+    volatile uint32_t latency_total;
+    volatile uint32_t latency_count;
+#endif
+    volatile uint32_t write_q_added;
+    volatile uint32_t write_q_consumed;
+
+    volatile uint32_t read_q_added;
+    volatile uint32_t read_q_consumed;
+
+    volatile uint32_t cloud_req_recvd;
+    volatile uint32_t cloud_req_err;
+} aclk_metrics_per_sample;
+
+void *aclk_stats_main_thread(void *ptr);
+void aclk_stats_upd_online(int online);
+
+#endif /* NETDATA_ACLK_STATS_H */