Add support for YAML strategy

Introduces a new 'yaml' strategy using Ansible's `from_yaml` to read
target files. This allows users to group multiple targets with
distinct label sets (e.g., severity or job) within a single file,
optimizing Prometheus file-based service discovery.

- Refactored task structure into `strategy_*.yml` for consistency.
- Extracted shared exporter variable computation.
- Implemented label merging where exporter labels override defaults.
- Included support for groups and hosts without labels to prevent crashes.

PR: (#1) https://github.com/kliwniloc/ansible-role-prometheus-target/pull/1

1 files changed, 7 insertions, 5 deletions

diff --git a/tasks/main.yml b/tasks/main.yml
index f8d6caa..5a184f8 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -1,11 +1,13 @@
 ---
-- name: Select strategy
+- name: Process all exporters
   ansible.builtin.include_tasks:
-    file: '{{ prometheus_target_strategy }}.yml'
-  vars:
-    changed: false
+    file: process_exporter.yml
+  loop: '{{ prometheus_target_exporter +
+         ([] if prometheus_target_skip_default_exporters else prometheus_target_default_exporters) }}'
+  loop_control:
+    loop_var: item
 
 - name: Run handlers
   ansible.builtin.include_tasks:
     file: handlers.yml
-  when: changed
+  when: changed | default(false)