---
# ------------------------------------------------------------------------------
# FILE: roles/llm-inference/tasks/serve.yml
# DESCRIPTION: Phase 5 — systemd vllm-serve service.
#              Deploys the service unit, enables on boot, starts it, and
#              health-checks the OpenAI-compatible API endpoint.
# ------------------------------------------------------------------------------

- name: Deploy vllm-serve systemd service unit
  ansible.builtin.template:
    src: vllm-serve.service.j2
    dest: /etc/systemd/system/vllm-serve.service
    owner: root
    group: root
    mode: "0644"
  notify:
    - reload systemd
    - restart vllm-serve

- name: Flush handlers to reload systemd before enabling service
  ansible.builtin.meta: flush_handlers

- name: Enable and start vllm-serve
  ansible.builtin.systemd:
    name: vllm-serve
    state: started
    enabled: true
    daemon_reload: true

- name: Wait for vLLM API to become available (model load can take ~60s)
  ansible.builtin.uri:
    url: "http://localhost:{{ llm_serve_port }}/health"
    status_code: 200
  register: vllm_health
  retries: 30
  delay: 10
  until: vllm_health.status == 200

- name: Smoke-test — list available models
  ansible.builtin.uri:
    url: "http://localhost:{{ llm_serve_port }}/v1/models"
    status_code: 200
    return_content: true
  register: vllm_models

- name: Print available models
  ansible.builtin.debug:
    msg: "vLLM serving: {{ vllm_models.json.data | map(attribute='id') | list }}"