add Kafka metric support for 3 labels (#778)

Co-authored-by: Lucian Ilie <[email protected]>

api/assets/kafka/jmx-exporter.yml

@@ -156,6 +156,14 @@ rules:
   # Emulate Prometheus 'Summary' metrics for the exported 'Histogram's.
   #
   # Note that these are missing the '_sum' metric!
+  - pattern: kafka.(\w+)<type=(.+), name=(.+), (.+)=(.+), (.+)=(.+), (.+)=(.+)><>Count
+    name: kafka_$1_$2_$3_count
+    cache: true
+    type: COUNTER
+    labels:
+      "$4": "$5"
+      "$6": "$7"
+      "$8": "$9"
   - pattern: kafka.(\w+)<type=(.+), name=(.+), (.+)=(.+), (.+)=(.+)><>Count
     name: kafka_$1_$2_$3_count
     cache: true
@@ -194,7 +202,16 @@ rules:
     type: GAUGE
     labels:
       quantile: "0.$4"
-  # Catch all other GAUGES with other types with 0-2 key-value pairs
+  # Catch all other GAUGES with other types with 0-3 key-value pairs
+  - pattern : kafka.(\w+)<type=([A-Za-z-]+), (.+)=(.+), (.+)=(.+), (.+)=(.+)><>([A-Za-z-]+)
+    name: kafka_$1_$2_$9
+    type: GAUGE
+    cache: true
+    labels:
+      "$3": "$4"
+      "$5": "$6"
+      "$7": "$8"
+  # Catch all other GAUGES with other types with 0-2 key-value pairs   
   - pattern : kafka.(\w+)<type=([A-Za-z-]+), (.+)=(.+), (.+)=(.+)><>([A-Za-z-]+)
     name: kafka_$1_$2_$7
     type: GAUGE