feat(agent): autoconfig passes publish context and fillStrategy (#1220)

* add /api/v4.2/discovery to agent proxy config

* pass down agent publication context values

Author: andrewazores

internal/controllers/configmaps.go

@@ -301,6 +301,7 @@ func (r *Reconciler) reconcileAgentProxyConfig(ctx context.Context, cr *model.Cr
 		CryostatPort:  constants.CryostatHTTPContainerPort,
 		AllowedPathPrefixes: []string{
 			"/api/v4/discovery",
+			"/api/v4.2/discovery",
 			"/api/v4/credentials",
 			"/api/beta/recordings",
 			"/api/beta/diagnostics/heapdump/upload",

internal/test/resources.go

@@ -5224,6 +5224,14 @@ http {
 			proxy_pass http://127.0.0.1:8181$request_uri;
 		}
 
+		location /api/v4.2/discovery/ {
+			proxy_pass http://127.0.0.1:8181$request_uri;
+		}
+
+		location = /api/v4.2/discovery {
+			proxy_pass http://127.0.0.1:8181$request_uri;
+		}
+
 		location /api/v4/credentials/ {
 			proxy_pass http://127.0.0.1:8181$request_uri;
 		}
@@ -5317,6 +5325,14 @@ http {
 			proxy_pass http://127.0.0.1:8181$request_uri;
 		}
 
+		location /api/v4.2/discovery/ {
+			proxy_pass http://127.0.0.1:8181$request_uri;
+		}
+
+		location = /api/v4.2/discovery {
+			proxy_pass http://127.0.0.1:8181$request_uri;
+		}
+
 		location /api/v4/credentials/ {
 			proxy_pass http://127.0.0.1:8181$request_uri;
 		}

internal/webhooks/agent/pod_defaulter.go

@@ -239,6 +239,22 @@ func (r *podMutator) Default(ctx context.Context, obj runtime.Object) error {
 			Name:  "CRYOSTAT_AGENT_WEBSERVER_PORT",
 			Value: strconv.Itoa(int(*port)),
 		},
+		corev1.EnvVar{
+			Name:  "CRYOSTAT_AGENT_PUBLISH_FILL_STRATEGY",
+			Value: "KUBERNETES",
+		},
+		corev1.EnvVar{
+			Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NAMESPACE",
+			Value: pod.Namespace,
+		},
+		corev1.EnvVar{
+			Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NODETYPE",
+			Value: "Pod",
+		},
+		corev1.EnvVar{
+			Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NAME",
+			Value: fmt.Sprintf("$(%s)", podNameEnvVar),
+		},
 	)
 
 	if len(harvesterTemplate) > 0 {

internal/webhooks/agent/test/resources.go

@@ -578,6 +578,22 @@ func (r *AgentWebhookTestResources) newMutatedContainer(original *corev1.Contain
 				Name:  "CRYOSTAT_AGENT_WEBSERVER_PORT",
 				Value: strconv.Itoa(int(options.callbackPort)),
 			},
+			{
+				Name:  "CRYOSTAT_AGENT_PUBLISH_FILL_STRATEGY",
+				Value: "KUBERNETES",
+			},
+			{
+				Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NAMESPACE",
+				Value: options.namespace,
+			},
+			{
+				Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NODETYPE",
+				Value: "Pod",
+			},
+			{
+				Name:  "CRYOSTAT_AGENT_PUBLISH_CONTEXT_NAME",
+				Value: "$(CRYOSTAT_AGENT_POD_NAME)",
+			},
 			{
 				Name:  options.javaOptionsName,
 				Value: options.javaOptionsValue + fmt.Sprintf("-javaagent:"+constants.AgentJarPath+"=io.cryostat.agent.shaded.org.slf4j.simpleLogger.defaultLogLevel=%s", options.logLevel),