services:
  prometheus_writer:
    image: prom/prometheus:v2.50.1
    hostname: ${PROMETHEUS_WRITER_HOSTNAME:-prometheus_writer}
    restart: always
    entrypoint: |
      /bin/sh -c 'truncate -s 0 /etc/prometheus/prometheus.yml
      cat << EOF >> /etc/prometheus/prometheus.yml
      global:
        scrape_interval: 1s
      scrape_configs:
        - job_name: "prometheus"
          static_configs:
            - targets: ["localhost:${PROMETHEUS_WRITER_PORT}"]
      EOF
      if [ -n "${PROMETHEUS_REMOTE_WRITE_HANDLER}" ]; then
        echo "remote_write:" >> /etc/prometheus/prometheus.yml
        echo "  - url: \"${PROMETHEUS_REMOTE_WRITE_HANDLER}\"" >> /etc/prometheus/prometheus.yml
      fi
      #cat "/etc/prometheus/prometheus.yml"
      /bin/prometheus --config.file="/etc/prometheus/prometheus.yml" --storage.tsdb.path="/prometheus" --web.console.libraries="/usr/share/prometheus/console_libraries" --web.console.templates="/usr/share/prometheus/consoles" --web.listen-address="0.0.0.0:${PROMETHEUS_WRITER_PORT}" &> /var/log/prometheus/prometheus.log'
    expose:
      - ${PROMETHEUS_WRITER_PORT}
    healthcheck:
      test: curl -f "ttps://localhost:${PROMETHEUS_WRITER_PORT}/api/v1/status/runtimeinfo" || exit 1
      interval: 5s
      timeout: 3s
      retries: 30
    volumes:
      - type: ${PROMETHEUS_WRITER_LOGS_FS:-tmpfs}
        source: ${PROMETHEUS_WRITER_LOGS:-}
        target: /var/log/prometheus

  prometheus_reader:
    image: prom/prometheus:v2.50.1
    hostname: ${PROMETHEUS_READER_HOSTNAME:-prometheus_reader}
    restart: always
    entrypoint: |
      /bin/sh -c 'truncate -s 0 /etc/prometheus/prometheus.yml
      if [ -n "${PROMETHEUS_REMOTE_READ_HANDLER}" ]; then
        echo "remote_read:" >> /etc/prometheus/prometheus.yml
        echo "  - url: \"${PROMETHEUS_REMOTE_READ_HANDLER}\"" >> /etc/prometheus/prometheus.yml
      fi
      #cat "/etc/prometheus/prometheus.yml"
      /bin/prometheus --config.file="/etc/prometheus/prometheus.yml" --storage.tsdb.path="/prometheus" --web.console.libraries="/usr/share/prometheus/console_libraries" --web.console.templates="/usr/share/prometheus/consoles" --web.listen-address="0.0.0.0:${PROMETHEUS_READER_PORT}" &> /var/log/prometheus/prometheus.log'
    expose:
      - ${PROMETHEUS_READER_PORT}
    healthcheck:
      test: curl -f "ttps://localhost:${PROMETHEUS_READER_PORT}/api/v1/status/runtimeinfo" || exit 1
      interval: 5s
      timeout: 3s
      retries: 30
    volumes:
      - type: ${PROMETHEUS_READER_LOGS_FS:-tmpfs}
        source: ${PROMETHEUS_READER_LOGS:-}
        target: /var/log/prometheus