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-rw-r--r--collectors/checks.plugin/Makefile.am8
-rw-r--r--collectors/checks.plugin/README.md10
-rw-r--r--collectors/checks.plugin/plugin_checks.c129
-rw-r--r--collectors/checks.plugin/plugin_checks.h29
4 files changed, 176 insertions, 0 deletions
diff --git a/collectors/checks.plugin/Makefile.am b/collectors/checks.plugin/Makefile.am
new file mode 100644
index 0000000..161784b
--- /dev/null
+++ b/collectors/checks.plugin/Makefile.am
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+AUTOMAKE_OPTIONS = subdir-objects
+MAINTAINERCLEANFILES = $(srcdir)/Makefile.in
+
+dist_noinst_DATA = \
+ README.md \
+ $(NULL)
diff --git a/collectors/checks.plugin/README.md b/collectors/checks.plugin/README.md
new file mode 100644
index 0000000..5f1a6b9
--- /dev/null
+++ b/collectors/checks.plugin/README.md
@@ -0,0 +1,10 @@
+<!--
+title: "checks.plugin"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/checks.plugin/README.md
+-->
+
+# checks.plugin
+
+A debugging plugin (by default it is disabled)
+
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fcollectors%2Fchecks.plugin%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/collectors/checks.plugin/plugin_checks.c b/collectors/checks.plugin/plugin_checks.c
new file mode 100644
index 0000000..f8a2008
--- /dev/null
+++ b/collectors/checks.plugin/plugin_checks.c
@@ -0,0 +1,129 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "plugin_checks.h"
+
+#ifdef NETDATA_INTERNAL_CHECKS
+
+static void checks_main_cleanup(void *ptr) {
+ struct netdata_static_thread *static_thread = (struct netdata_static_thread *)ptr;
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITING;
+
+ info("cleaning up...");
+
+ static_thread->enabled = NETDATA_MAIN_THREAD_EXITED;
+}
+
+void *checks_main(void *ptr) {
+ netdata_thread_cleanup_push(checks_main_cleanup, ptr);
+
+ usec_t usec = 0, susec = localhost->rrd_update_every * USEC_PER_SEC, loop_usec = 0, total_susec = 0;
+ struct timeval now, last, loop;
+
+ RRDSET *check1, *check2, *check3, *apps_cpu = NULL;
+
+ check1 = rrdset_create_localhost(
+ "netdata"
+ , "check1"
+ , NULL
+ , "netdata"
+ , NULL
+ , "Caller gives microseconds"
+ , "a million !"
+ , "checks.plugin"
+ , ""
+ , NETDATA_CHART_PRIO_CHECKS
+ , localhost->rrd_update_every
+ , RRDSET_TYPE_LINE
+ );
+
+ rrddim_add(check1, "absolute", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(check1, "incremental", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+
+ check2 = rrdset_create_localhost(
+ "netdata"
+ , "check2"
+ , NULL
+ , "netdata"
+ , NULL
+ , "Netdata calcs microseconds"
+ , "a million !"
+ , "checks.plugin"
+ , ""
+ , NETDATA_CHART_PRIO_CHECKS
+ , localhost->rrd_update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrddim_add(check2, "absolute", NULL, -1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(check2, "incremental", NULL, 1, 1, RRD_ALGORITHM_INCREMENTAL);
+
+ check3 = rrdset_create_localhost(
+ "netdata"
+ , "checkdt"
+ , NULL
+ , "netdata"
+ , NULL
+ , "Clock difference"
+ , "microseconds diff"
+ , "checks.plugin"
+ , ""
+ , NETDATA_CHART_PRIO_CHECKS
+ , localhost->rrd_update_every
+ , RRDSET_TYPE_LINE
+ );
+ rrddim_add(check3, "caller", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(check3, "netdata", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+ rrddim_add(check3, "apps.plugin", NULL, 1, 1, RRD_ALGORITHM_ABSOLUTE);
+
+ now_realtime_timeval(&last);
+ while(!netdata_exit) {
+ usleep(susec);
+
+ // find the time to sleep in order to wait exactly update_every seconds
+ now_realtime_timeval(&now);
+ loop_usec = dt_usec(&now, &last);
+ usec = loop_usec - susec;
+ debug(D_PROCNETDEV_LOOP, "CHECK: last loop took %llu usec (worked for %llu, sleeped for %llu).", loop_usec, usec, susec);
+
+ if(usec < (localhost->rrd_update_every * USEC_PER_SEC / 2ULL)) susec = (localhost->rrd_update_every * USEC_PER_SEC) - usec;
+ else susec = localhost->rrd_update_every * USEC_PER_SEC / 2ULL;
+
+ // --------------------------------------------------------------------
+ // Calculate loop time
+
+ last.tv_sec = now.tv_sec;
+ last.tv_usec = now.tv_usec;
+ total_susec += loop_usec;
+
+ // --------------------------------------------------------------------
+ // check chart 1
+
+ if(check1->counter_done) rrdset_next_usec(check1, loop_usec);
+ rrddim_set(check1, "absolute", 1000000);
+ rrddim_set(check1, "incremental", total_susec);
+ rrdset_done(check1);
+
+ // --------------------------------------------------------------------
+ // check chart 2
+
+ if(check2->counter_done) rrdset_next(check2);
+ rrddim_set(check2, "absolute", 1000000);
+ rrddim_set(check2, "incremental", total_susec);
+ rrdset_done(check2);
+
+ // --------------------------------------------------------------------
+ // check chart 3
+
+ if(!apps_cpu) apps_cpu = rrdset_find_localhost("apps.cpu");
+ if(check3->counter_done) rrdset_next_usec(check3, loop_usec);
+ now_realtime_timeval(&loop);
+ rrddim_set(check3, "caller", (long long) dt_usec(&loop, &check1->last_collected_time));
+ rrddim_set(check3, "netdata", (long long) dt_usec(&loop, &check2->last_collected_time));
+ if(apps_cpu) rrddim_set(check3, "apps.plugin", (long long) dt_usec(&loop, &apps_cpu->last_collected_time));
+ rrdset_done(check3);
+ }
+
+ netdata_thread_cleanup_pop(1);
+ return NULL;
+}
+
+#endif // NETDATA_INTERNAL_CHECKS
diff --git a/collectors/checks.plugin/plugin_checks.h b/collectors/checks.plugin/plugin_checks.h
new file mode 100644
index 0000000..9349476
--- /dev/null
+++ b/collectors/checks.plugin/plugin_checks.h
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_PLUGIN_CHECKS_H
+#define NETDATA_PLUGIN_CHECKS_H 1
+
+#include "../../daemon/common.h"
+
+#ifdef NETDATA_INTERNAL_CHECKS
+
+#define NETDATA_PLUGIN_HOOK_CHECKS \
+ { \
+ .name = "PLUGIN[check]", \
+ .config_section = CONFIG_SECTION_PLUGINS, \
+ .config_name = "checks", \
+ .enabled = 0, \
+ .thread = NULL, \
+ .init_routine = NULL, \
+ .start_routine = checks_main \
+ },
+
+extern void *checks_main(void *ptr);
+
+#else // !NETDATA_INTERNAL_CHECKS
+
+#define NETDATA_PLUGIN_HOOK_CHECKS
+
+#endif // NETDATA_INTERNAL_CHECKS
+
+#endif // NETDATA_PLUGIN_CHECKS_H