version: '3.4'

# The OpenTelemetry docker-compose file is used to configure OpenTelemetry for the services
#
# You need to start it with the following CLI command:
# docker-compose -f docker-compose.yml -f docker-compose.override.yml -f docker-compose.opentelemetry.otlp.yml up

services:
  otel-collector:
    image: otel/opentelemetry-collector:latest
    command: ["--config=/etc/otel-collector-config.yaml"]
    volumes:
      - ./OpenTelemetry/otel-collector-config.yaml:/etc/otel-collector-config.yaml
    ports:
      - "4317"        # OTLP gRPC receiver
  
  basket-api:
    environment:
      - OTEL_USE_EXPORTER=otlp
      - OTEL_EXPORTER_TOOL_ENDPOINT=${OTEL_EXPORTER_TOOL_ENDPOINT:-http://otel-collector:4317}
      - OTEL_EXPORTER_OTLP_HEADERS=${OTEL_EXPORTER_OTLP_HEADERS}
  
  catalog-api:
    environment:
      - OTEL_USE_EXPORTER=otlp
      - OTEL_EXPORTER_TOOL_ENDPOINT=${OTEL_EXPORTER_TOOL_ENDPOINT:-http://otel-collector:4317}
      - OTEL_EXPORTER_OTLP_HEADERS=${OTEL_EXPORTER_OTLP_HEADERS}

  webmvc:
    environment:
      - OTEL_USE_EXPORTER=otlp
      - OTEL_EXPORTER_TOOL_ENDPOINT=${OTEL_EXPORTER_TOOL_ENDPOINT:-http://otel-collector:4317}
      - OTEL_EXPORTER_OTLP_HEADERS=${OTEL_EXPORTER_OTLP_HEADERS}