Adding ability for ipv4Availability and ipv6Availability to TM (apach…

…e#7024)

CHANGELOG.md

@@ -6,6 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 ## [unreleased]
 ### Added
 - [#6033](https://github.com/apache/trafficcontrol/issues/6033) Added ability to assign multiple server capabilities to a server.
+- [Traffic Monitor] Added logging for `ipv4Availability` and `ipv6Availability` in TM.
 
 ### Fixed
 - Traffic Stats: Reuse InfluxDB client handle to prevent potential connection leaks

traffic_monitor/health/event.go

@@ -90,8 +90,8 @@ func (o *ThreadsafeEvents) Get() []Event {
 
 // Add adds the given event. This is threadsafe for one writer, multiple readers. This MUST NOT be called by multiple threads, as it non-atomically fetches and adds.
 func (o *ThreadsafeEvents) Add(e Event) {
-	// host="hostname", type=EDGE, available=true, msg="REPORTED - available"
-	log.Eventf(time.Time(e.Time), "host=\"%s\", type=%s, available=%t, msg=\"%s\"", e.Hostname, e.Type, e.Available, e.Description)
+	// host="hostname", type=EDGE, available=true, ipv4Available=true, ipv6Available=true, msg="REPORTED - available"
+	log.Eventf(time.Time(e.Time), "host=\"%s\", type=%s, available=%t, ipv4Available=%t, ipv6Available=%t, msg=\"%s\"", e.Hostname, e.Type, e.Available, e.IPv4Available, e.IPv6Available, e.Description)
 	o.m.Lock() // TODO test removing
 	events := copyEvents(*o.events)
 	e.Index = *o.nextIndex