Send chart context with alert events to the cloud (#13409)

* add chart context to alert events

* migrate health log tables to add chart_context

* send it via proto message

* add from v3 to v4

* free table

* free chart_context

1 files changed, 7 insertions, 2 deletions

diff --git a/health/health_log.c b/health/health_log.c
index 7a4e12688a..f0a05531d3 100644
--- a/health/health_log.c
+++ b/health/health_log.c
@@ -450,6 +450,7 @@ inline ALARM_ENTRY* health_create_alarm_entry(
         time_t when,
         const char *name,
         const char *chart,
+        const char *chart_context,
         const char *family,
         const char *class,
         const char *component,
@@ -457,8 +458,8 @@ inline ALARM_ENTRY* health_create_alarm_entry(
         const char *exec,
         const char *recipient,
         time_t duration,
-    NETDATA_DOUBLE old_value,
-    NETDATA_DOUBLE new_value,
+        NETDATA_DOUBLE old_value,
+        NETDATA_DOUBLE new_value,
         RRDCALC_STATUS old_status,
         RRDCALC_STATUS new_status,
         const char *source,
@@ -478,6 +479,9 @@ inline ALARM_ENTRY* health_create_alarm_entry(
         ae->hash_chart = simple_hash(ae->chart);
     }
 
+    if(chart_context)
+        ae->chart_context = strdupz(chart_context);
+
     uuid_copy(ae->config_hash_id, *((uuid_t *) config_hash_id));
 
     if(family)
@@ -583,6 +587,7 @@ inline void health_alarm_log(
 inline void health_alarm_log_free_one_nochecks_nounlink(ALARM_ENTRY *ae) {
     freez(ae->name);
     freez(ae->chart);
+    freez(ae->chart_context);
     freez(ae->family);
     freez(ae->classification);
     freez(ae->component);