---
# Resolve the hosting node and local container id of a service's task so callers
# can delegate to <prefix>_HOST_NODE and run commands inside <prefix>_LOCAL_CID.
# An in-container command is node-local, so a swarm task on a worker must be
# reached on its own node. Sets <prefix>_HOST_NODE / <prefix>_LOCAL_CID (swarm+compose).
#
# Param: resolve_service_key - compose/swarm service key
# Param: resolve_service_name - explicit swarm service name; overrides container_service(application_id, resolve_service_key) for a service in another stack (e.g. a shared central DB)
# Param: resolve_output_prefix - fact prefix; sets <prefix>_HOST_NODE / <prefix>_LOCAL_CID
# Param: resolve_compose_cid - container id/name used in compose mode
# Param: resolve_converge_retries - swarm converge retries (default 600)
# Param: resolve_converge_delay - swarm converge delay seconds (default 2)
# Param: resolve_cid_filters - extra `container ps` filters for the cid lookup (default '')
- name: "🔧 resolve_host_cid | resolve swarm service name for '{{ resolve_service_key }}'"
ansible.builtin.set_fact:
_resolve_service_name: "{{ (resolve_service_name | default('')) or (lookup('container_service', application_id, resolve_service_key) if DEPLOYMENT_MODE == 'swarm'
else '') }}"
- name: "⏳ resolve_host_cid | wait for '{{ resolve_service_key }}' to converge"
ansible.builtin.include_tasks: "{{ lookup('path_absolute', 'roles/sys-svc-compose/tasks/utils/swarm/wait_converged.yml') }}"
vars:
wait_service_key: "{{ resolve_service_key }}"
wait_service_name: "{{ _resolve_service_name }}"
wait_retries: "{{ resolve_converge_retries | default(600) }}"
wait_delay: "{{ resolve_converge_delay | default(2) }}"
- name: "🔍 resolve_host_cid | resolve hosting node for '{{ resolve_service_key }}'"
ansible.builtin.shell: |
container service ps {{ _resolve_service_name | quote }} \
--filter desired-state=running \
--format '{{ "{{.Node}}" }}' | head -1
register: _resolve_node
changed_when: false
retries: 30
delay: 2
until: (_resolve_node.stdout | trim) | length > 0
delegate_to: "{{ STACK_HOST }}"
when: DEPLOYMENT_MODE == 'swarm'
- name: "🔧 resolve_host_cid | set {{ resolve_output_prefix }}_HOST_NODE"
ansible.builtin.set_fact:
"{{ resolve_output_prefix }}_HOST_NODE": "{{ (_resolve_node.stdout | trim) if DEPLOYMENT_MODE == 'swarm' else inventory_hostname }}"
- name: "🔍 resolve_host_cid | resolve local container id for '{{ resolve_service_key }}'"
ansible.builtin.shell: |
{% if DEPLOYMENT_MODE == 'swarm' %}
container ps \
--filter "label=com.docker.swarm.service.name={{ _resolve_service_name }}" \
--filter status=running {{ resolve_cid_filters | default('') }} \
--format '{{ "{{.ID}}" }}' | head -1
{% else %}
echo {{ resolve_compose_cid | quote }}
{% endif %}
register: _resolve_cid
changed_when: false
retries: 30
delay: 2
until: DEPLOYMENT_MODE == 'compose' or (_resolve_cid.stdout | trim) | length > 0
delegate_to: "{{ lookup('vars', resolve_output_prefix ~ '_HOST_NODE') }}"
- name: "🔧 resolve_host_cid | set {{ resolve_output_prefix }}_LOCAL_CID"
ansible.builtin.set_fact:
"{{ resolve_output_prefix }}_LOCAL_CID": "{{ _resolve_cid.stdout | trim }}"
