add ansible

promtail-ansible/roles/patrickjahns.promtail/tasks/preflight.yml

@@ -0,0 +1,43 @@
+---
+- name: Assert usage of systemd as an init system
+  assert:
+    that: ansible_service_mgr == 'systemd'
+    msg: "This module only works with systemd"
+
+- block:
+    - name: Get latest release
+      uri:
+        url: "https://api.github.com/repos/grafana/loki/releases/latest"
+        method: GET
+        return_content: True
+        status_code: 200
+        body_format: json
+        validate_certs: False
+        user: "{{ lookup('env', 'GH_USER') | default(omit) }}"
+        password: "{{ lookup('env', 'GH_TOKEN') | default(omit) }}"
+      no_log: "{{ not lookup('env', 'ANSIBLE_DEBUG') | bool }}"
+      register: _latest_release
+      until: _latest_release.status == 200
+      retries: 5
+
+    - name: "Set promtail version to {{ _latest_release.json.tag_name[1:] }}"
+      set_fact:
+        promtail_version: "{{ _latest_release.json.tag_name[1:] }}"
+  when:
+    - promtail_version == "latest"
+  delegate_to: localhost
+  run_once: True
+
+
+- name: "Get checksum list"
+  set_fact:
+    __promtail_checksums: "{{ lookup('url', 'https://github.com/grafana/loki/releases/download/v' + promtail_version + '/SHA256SUMS', wantlist=True) | list }}"
+  run_once: True
+  delegate_to: localhost
+
+- name: "Get checksum for {{ go_arch }} architecture"
+  set_fact:
+    __promtail_checksum: "{{ item.split(' ')[0] }}"
+  with_items: "{{ __promtail_checksums }}"
+  when:
+    - "('promtail-linux-' + go_arch + '.zip') in item"