docker-compose.yaml

version: "3.2"
services:

    # The C++ proxy that sits in front of the C++ server.
    proxy:
        build:
            context: .
            dockerfile: Dockerfile
        command: /dd-trace-cpp/dist/bin/http-proxy-example
        ports:
            - "127.0.0.1:8000:80"
        environment:
            - DD_AGENT_HOST=datadog-agent
            - DD_SERVICE=dd-trace-cpp-http-server-example-proxy
        depends_on:
            - datadog-agent

    # The C++ HTTP server to which we added Datadog tracing
    server:
        build:
            context: .
            dockerfile: Dockerfile
        command: /dd-trace-cpp/dist/bin/http-server-example
        environment:
            # This will override any value of `datadog::tracing::TracerConfig`'s
            # `.agent.url` in `server.cpp`.
            - DD_AGENT_HOST=datadog-agent
        depends_on:
            - datadog-agent

    # A Python HTTP server that acts as a database backed by SQLite.
    # It also has Datadog tracing.
    database:
        build:
            context: ./database
            dockerfile: ./Dockerfile
        environment:
            - DD_AGENT_HOST=datadog-agent
            - DD_SERVICE=dd-trace-cpp-http-server-example-database
        depends_on:
            - datadog-agent

    # The Datadog trace agent
    datadog-agent:
        image: datadog/agent
        volumes:
            - '/var/run/docker.sock:/var/run/docker.sock:ro'
            - '/run/user:/run/user:ro'
            - '/proc/:/host/proc/:ro'
            - '/sys/fs/cgroup/:/host/sys/fs/cgroup:ro'
        environment:
            - DD_API_KEY
            - DD_APM_ENABLED=true
            - DD_LOG_LEVEL=ERROR
            - DOCKER_HOST
            - DD_SITE