feat(template): move flag formatting to filter_plugin

filter_plugins/docker_filters.py

@@ -0,0 +1,26 @@
+# filter_plugins/docker_filters.py
+
+
+def create_docker_flags(flags):
+    return "\n".join([create_docker_flag(item) for item in flags])
+
+
+def create_docker_flag(item):
+    if isinstance(item, dict):
+        key = list(item.keys())[0]
+        value = item[key]
+        if isinstance(value, list):
+            return "\n".join(['--{} "{}" \\'.format(key, val) for val in value])
+        else:
+            return '--{} "{}" \\'.format(key, value)
+    elif isinstance(item, str):
+        return "--{} \\".format(item)
+    else:
+        return ""
+
+
+class FilterModule(object):
+    def filters(self):
+        return {
+            "create_docker_flags": create_docker_flags,
+        }

molecule/default_vagrant/group_vars/all.yml

@@ -12,6 +12,9 @@ docker_systemd_service_flags:
       - /var:/test:ro
   - health-cmd: curl localhost:80
   - health-retries: 10
+  - cap-add:
+      - SYS_ADMIN
+  - dns: "8.8.8.8"
 
 docker_systemd_service_container_cmd: []
 #! TO REPLACE

templates/unit.j2

@@ -1,26 +1,4 @@
 # {{ ansible_managed }}
-{%- macro create_docker_flags(flags) %}
-{% for item in flags %}
-{{ create_docker_flag(item) }}
-{% endfor %}
-{% endmacro -%}
-
-{%- macro create_docker_flag(item) %}
-{%- if item is mapping %}
-{% set key = item.keys() | first %}
-{% set value = item[key] %}
-{%- if value.__class__.__name__ == 'list' %}
-{% for val in value %}
---{{ key }} "{{ val }}" \{% if not loop.last +%}
-{% endif %}{% endfor %}
-{%- else %}
---{{ key }} "{{ value }}" \
-{%- endif %}
-{%- elif  item is string %}
---{{ item }} \
-{%- endif -%}
-{% endmacro %}
-
 {% set service_systemd_options_keys = docker_systemd_service_systemd_options | selectattr("key") | map(attribute="key") | list %}
 [Unit]
 {% for key, value in docker_systemd_service_systemd_unit_options | dictsort %}
@@ -41,8 +19,8 @@ ExecStartPre=-{{ docker_systemd_service_docker_path }} rm -f {{ docker_systemd_s
 ExecStart={{ docker_systemd_service_docker_path }} run --name {{ docker_systemd_service_container_name }} \
 --rm \
 --env-file {{ docker_systemd_service_sysconf_dir }}/{{ docker_systemd_service_container_name }} \
-{{ create_docker_flags(docker_systemd_service_flags) -}}
-{{- docker_systemd_service_image -}}{{ ' ' if docker_systemd_service_container_cmd else '' }}{% if docker_systemd_service_container_cmd is string %}{{ docker_systemd_service_container_cmd | trim }}{% else %}{{ docker_systemd_service_container_cmd | join(' ') | trim }}{% endif %}
+{{ docker_systemd_service_flags|create_docker_flags }}
+{{ docker_systemd_service_image -}}{{ ' ' if docker_systemd_service_container_cmd else '' }}{% if docker_systemd_service_container_cmd is string %}{{ docker_systemd_service_container_cmd | trim }}{% else %}{{ docker_systemd_service_container_cmd | join(' ') | trim }}{% endif %}
 {% endif +%}
 {% if not 'ExecStop' in service_systemd_options_keys %}
 ExecStop={{ docker_systemd_service_docker_path }} stop {{ docker_systemd_service_container_name }}