feat: add list-loki-instances action to cluster actions (wip)

core/imageroot/var/lib/nethserver/cluster/actions/list-loki-instances/10get

@@ -0,0 +1,43 @@
+#!/usr/bin/env python3
+
+#
+# Copyright (C) 2024 Nethesis S.r.l.
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+
+import json
+import sys
+
+import agent
+from cluster import modules
+
+redis_client = agent.redis_connect()
+default_instance = redis_client.get("cluster/default_instance/loki")
+instances = modules.list_installed(redis_client).get("ghcr.io/nethserver/loki", [])
+
+response = []
+for instance in instances:
+    item = {
+        "instance_id": instance["id"],
+        "instance_label": instance["ui_name"],
+        "node_id": instance["node"],
+        "node_label": instance["node_ui_name"],
+        "active": instance["id"] == default_instance
+    }
+
+    task_response = agent.tasks.run(
+        agent_id=f'module/{instance["id"]}',
+        action='get-configuration',
+        endpoint="redis://cluster-leader"
+    )
+    if task_response["exit_code"] == 0:
+        item["retention_days"] = task_response["output"]["retention_days"]
+        item["active_from"] = "1970-01-01T00:00:00Z+00:00"
+        if not item["active"]:
+            item["active_to"] = "2024-12-31T23:59:59Z+00:00"
+
+    response.append(item)
+
+json.dump({
+    'applications': response
+}, sys.stdout)

core/imageroot/var/lib/nethserver/cluster/actions/list-loki-instances/validate-output.json

@@ -0,0 +1,60 @@
+{
+    "$schema": "http://json-schema.org/draft-07/schema#",
+    "title": "List loki instances",
+    "$id": "http://schema.nethserver.org/cluster/list-loki-instances-output.json",
+    "type": "object",
+    "required": [
+        "instances"
+    ],
+    "properties": {
+        "instances": {
+            "type": "array",
+            "items": {
+                "type": "object",
+                "required": [
+                    "instance_id",
+                    "instance_label",
+                    "node_id",
+                    "node_label",
+                    "active"
+                ],
+                "properties": {
+                    "instance_id": {
+                        "type": "string",
+                        "description": "The Loki instance identifier."
+                    },
+                    "instance_label": {
+                        "type": "string",
+                        "description": "The Loki instance label, if empty string, there's no label."
+                    },
+                    "node_id": {
+                        "type": "string",
+                        "description": "The node identifier where the Loki instance is running."
+                    },
+                    "node_label": {
+                        "type": "string",
+                        "description": "The node label where the Loki instance is running, can be empty."
+                    },
+                    "active": {
+                        "type": "boolean",
+                        "description": "The Loki instance is the currently active."
+                    },
+                    "retention_days": {
+                        "type": "integer",
+                        "description": "The retention days for the Loki instance."
+                    },
+                    "active_from": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "The ISO 8601 date-time when the Loki instance was activated."
+                    },
+                    "active_to": {
+                        "type": "string",
+                        "format": "date-time",
+                        "description": "The ISO 8601 date-time when the Loki instance was deactivated."
+                    }
+                }
+            }
+        }
+    }
+}