receivers:
otlp:
    protocols:
    grpc:
        endpoint: 0.0.0.0:4317
    http:
        endpoint: 0.0.0.0:4318

processors:
batch:
    timeout: 1s
    send_batch_size: 1024
memory_limiter:
    limit_mib: 512
    check_interval: 1s

exporters:
# Export traces to Jaeger via OTLP (using gRPC)
otlp/jaeger:
    endpoint: jaeger:4317
    tls:
    insecure: true

# Export metrics to Prometheus
prometheus:
    endpoint: "0.0.0.0:8889"

# Debug exporter - logs telemetry data to console
debug:
    verbosity: detailed
    sampling_initial: 5
    sampling_thereafter: 200

service:
pipelines:
    traces:
    receivers: [otlp]
    processors: [memory_limiter, batch]
    exporters: [otlp/jaeger, debug]

    metrics:
    receivers: [otlp]
    processors: [memory_limiter, batch]
    exporters: [prometheus, debug]

global:
scrape_interval: 5s
evaluation_interval: 5s

scrape_configs:
- job_name: "otel-collector"
    static_configs:
    - targets: ["otel-collector:8889"]
    scrape_interval: 5s

- job_name: "prometheus"
    static_configs:
    - targets: ["localhost:9090"]

apiVersion: 1

datasources:
- name: Prometheus
    type: prometheus
    access: proxy
    url: http://prometheus:9090
    isDefault: true

version: "3.8"

services:
# OpenTelemetry Collector
otel-collector:
    image: otel/opentelemetry-collector-contrib:0.92.0
    container_name: otel-collector
    command: ["--config=/etc/otel-collector-config.yaml"]
    volumes:
    - ./otel-collector-config.yaml:/etc/otel-collector-config.yaml
    ports:
    - "4317:4317" # OTLP gRPC receiver
    - "4318:4318" # OTLP HTTP receiver
    - "8889:8889" # Prometheus metrics
    depends_on:
    - jaeger
    - prometheus
    networks:
    - observability

# Jaeger (for traces)
jaeger:
    image: jaegertracing/all-in-one:latest
    container_name: jaeger
    ports:
    - "16686:16686" # Jaeger UI
    environment:
    - COLLECTOR_OTLP_ENABLED=true
    networks:
    - observability

# Prometheus (for metrics)
prometheus:
    image: prom/prometheus:latest
    container_name: prometheus
    ports:
    - "9090:9090"
    volumes:
    - ./prometheus.yml:/etc/prometheus/prometheus.yml
    networks:
    - observability

# Grafana (for dashboards)
grafana:
    image: grafana/grafana:latest
    container_name: grafana
    ports:
    - "3000:3000"
    environment:
    - GF_SECURITY_ADMIN_PASSWORD=***** # replace with a secure password
    volumes:
    - grafana-storage:/var/lib/grafana
    - ./grafana/provisioning:/etc/grafana/provisioning
    networks:
    - observability

volumes:
grafana-storage:

networks:
observability:
    driver: bridge

docker-compose up -d