feat: add otel collector and otlp support

config/flagd/flags.json

@@ -16,7 +16,7 @@
         "blue": "0d507b",
         "yellow": "d4ac0d"
       },
-      "defaultVariant": "red",
+      "defaultVariant": "blue",
       "targeting": {
         "if": [
           {

config/otel/collector.yaml

@@ -0,0 +1,23 @@
+receivers:
+  otlp:
+    protocols:
+      grpc:
+exporters:
+  prometheus:
+    endpoint: "0.0.0.0:8889"
+  jaeger:
+    endpoint: jaeger:14250
+    tls:
+      insecure: true
+processors:
+  batch:
+service:
+  pipelines:
+    traces:
+      receivers: [ otlp ]
+      processors: [ batch ]
+      exporters: [ jaeger ]
+    metrics:
+      receivers: [ otlp ]
+      processors: [ batch ]
+      exporters: [ prometheus ]

config/prometheus/prometheus.yaml

@@ -0,0 +1,18 @@
+global:
+  scrape_interval: 5s # By default, scrape targets every 15 seconds.
+
+  # Attach these labels to any time series or alerts when communicating with
+  # external systems (federation, remote storage, Alertmanager).
+
+# A scrape configuration containing exactly one endpoint to scrape:
+# Here it's Prometheus itself.
+scrape_configs:
+  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
+  - job_name: "playground"
+
+    # Override the global default and scrape targets from this job every 5 seconds.
+    scrape_interval: 5s
+
+    static_configs:
+      - targets: [ 'otel-collector:8889' ]
+      - targets: [ 'otel-collector:8888' ]

docker-compose.yaml

@@ -4,6 +4,7 @@ services:
     image: ghcr.io/open-feature/playground-app:v0.11.0 # x-release-please-version
     # build:
     #  dockerfile: ./packages/app/Dockerfile
+    #  context: .
     ports:
       - '30000:30000'
     command:
@@ -23,6 +24,7 @@ services:
       - FIB_SERVICE_URL=http://fib-service:30001
       - FIB_SERVICE_USER
       - FIB_SERVICE_PASS
+      - ENABLED_SPAN_BASED_TRACES
       # Provider values come from the .env
       - NEW_WELCOME_MESSAGE
       - FIB_ALGO
@@ -47,7 +49,8 @@ services:
   fib-service:
     image: ghcr.io/open-feature/playground-fib-service:v0.11.0 # x-release-please-version
     # build:
-    #  dockerfile: ./packages/fibonacci-service/Dockerfile
+    #   dockerfile: ./packages/fibonacci-service/Dockerfile
+    #   context: .
     expose:
       - '30001'
     environment:
@@ -57,6 +60,7 @@ services:
       - OTEL_SERVICE_NAME=fibonacci-service
       - FIB_SERVICE_USER
       - FIB_SERVICE_PASS
+      - ENABLED_SPAN_BASED_TRACES
       # Provider values come from the .env
       - NEW_WELCOME_MESSAGE
       - FIB_ALGO
@@ -69,20 +73,48 @@ services:
       - CLOUDBEES_APP_KEY
 
   jaeger:
-    image: jaegertracing/all-in-one:1.46
+    image: jaegertracing/all-in-one:latest
     expose:
       - '6832/udp'
     ports:
       - '16686:16686'
 
+  otel-collector:
+    image: otel/opentelemetry-collector-contrib:latest
+    restart: always
+    command: [ "--config=/etc/otel-collector-config.yaml" ]
+    volumes:
+      - ./config/otel/collector.yaml:/etc/otel-collector-config.yaml
+    expose:
+      - "1888"   # pprof extension
+      - "8888"   # Prometheus metrics exposed by the collector
+      - "8889"   # Prometheus exporter metrics
+      - "4317"   # OTLP gRPC receiver
+    depends_on:
+      - jaeger
+      - prometheus
+
+  prometheus:
+    container_name: prometheus
+    image: prom/prometheus:latest
+    restart: always
+    volumes:
+      - ./config/prometheus/prometheus.yaml:/etc/prometheus/prometheus.yml
+    ports:
+      - "9090:9090"
+
   flagd:
-    image: ghcr.io/open-feature/flagd:v0.5.4
+    image: ghcr.io/open-feature/flagd:v0.6.6
     command:
       - start
       - --cors-origin
       - '*'
-      - --uri
-      - file://etc/flagd/flags.json
+      - --sources
+      - '[{"uri":"etc/flagd/flags.json","provider":"file","selector":"etc/flagd/flags.json"}]'
+      - --metrics-exporter
+      - otel
+      - --otel-collector-uri
+      - otel-collector:4317
     volumes:
       - ./config/flagd/flags.json:/etc/flagd/flags.json
     ports: