---
apiVersion: v1
kind: ConfigMap
metadata:
  name: otel-collector-conf
  labels:
    app: opentelemetry
    component: otel-collector-conf
data:
  otel-collector-config: |
    receivers:
      otlp:
        protocols:
          grpc:
            endpoint: ${env:MY_POD_IP}:4317
          http:
            endpoint: ${env:MY_POD_IP}:4318
      prometheus:
        config:
          scrape_configs:
            - job_name: 'apisix-monitoring'
              metrics_path: "/apisix/prometheus/metrics"
              scrape_interval: 5s
              static_configs:
                - targets: ['10.2.0.10:9091']
                  labels:
                    skywalking_service: apisix-gateway
    processors:
      resource/skywalking-service:
        attributes:
        - key: skywalking_service
          value: apisix-gateway
          action: insert
      batch:
      memory_limiter:
        # 80% of maximum memory up to 2G
        limit_mib: 1500
        # 25% of limit up to 2G
        spike_limit_mib: 512
        check_interval: 5s
    exporters:
      otlp:
        endpoint: "http://skywalking-skywalking-helm-oap.skywalking:11800" # Replace with a real endpoint.
        tls:
          insecure: true
      logging:
        verbosity: detailed
    extensions:
      health_check: {}
    
    service:
      pipelines:
        metrics:
          receivers: [ prometheus ]
          processors: [ memory_limiter, batch ]
          exporters: [ otlp,logging ]
      extensions: [ health_check ]
---
apiVersion: v1
kind: Service
metadata:
  name: otel-collector
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  ports:
  - name: otlp-grpc # Default endpoint for OpenTelemetry gRPC receiver.
    port: 4317
    protocol: TCP
    targetPort: 4317
  - name: otlp-http # Default endpoint for OpenTelemetry HTTP receiver.
    port: 4318
    protocol: TCP
    targetPort: 4318
  - name: metrics # Default endpoint for querying metrics.
    port: 8888
  selector:
    component: otel-collector
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: otel-collector
  labels:
    app: opentelemetry
    component: otel-collector
spec:
  selector:
    matchLabels:
      app: opentelemetry
      component: otel-collector
  minReadySeconds: 5
  progressDeadlineSeconds: 120
  replicas: 1 #TODO - adjust this to your own requirements
  template:
    metadata:
      labels:
        app: opentelemetry
        component: otel-collector
    spec:
      containers:
      - command:
          - "/otelcol"
          - "--config=/conf/otel-collector-config.yaml"
        image: otel/opentelemetry-collector:0.94.0
        name: otel-collector
        resources:
          limits:
            cpu: 1
            memory: 2Gi
          requests:
            cpu: 200m
            memory: 400Mi
        ports:
        - containerPort: 55679 # Default endpoint for ZPages.
        - containerPort: 4317 # Default endpoint for OpenTelemetry receiver.
        - containerPort: 13133 # Default endpoint for Jaeger gRPC receiver.
        - containerPort: 14268 # Default endpoint for Jaeger HTTP receiver.
        - containerPort: 9411 # Default endpoint for Zipkin receiver.
        - containerPort: 8888  # Default endpoint for querying metrics.
        env:
          - name: MY_POD_IP
            valueFrom:
              fieldRef:
                apiVersion: v1
                fieldPath: status.podIP
          - name: GOMEMLIMIT
            value: 1600MiB
        volumeMounts:
        - name: otel-collector-config-vol
          mountPath: /conf
      volumes:
        - configMap:
            name: otel-collector-conf
            items:
              - key: otel-collector-config
                path: otel-collector-config.yaml
          name: otel-collector-config-vol