Move metricstore from internal to pkg

pkg/metricstore/configSchema.go

@@ -0,0 +1,90 @@
+// Copyright (C) NHR@FAU, University Erlangen-Nuremberg.
+// All rights reserved. This file is part of cc-backend.
+// Use of this source code is governed by a MIT-style
+// license that can be found in the LICENSE file.
+
+package metricstore
+
+const configSchema = `{
+  "type": "object",
+  "description": "Configuration specific to built-in metric-store.",
+  "properties": {
+    "num-workers": {
+      "description": "Number of concurrent workers for checkpoint and archive operations",
+      "type": "integer"
+    },
+    "checkpoints": {
+      "description": "Configuration for checkpointing the metrics buffers",
+      "type": "object",
+      "properties": {
+        "file-format": {
+          "description": "Specify the format for checkpoint files. There are 2 variants: 'avro' and 'json'. If nothing is specified, 'avro' is default.",
+          "type": "string"
+        },
+        "interval": {
+          "description": "Interval at which the metrics should be checkpointed.",
+          "type": "string"
+        },
+        "directory": {
+          "description": "Path in which the checkpointed files should be placed.",
+          "type": "string"
+        }
+      },
+      "required": ["interval"]
+    },
+    "cleanup": {
+      "description": "Configuration for the cleanup process.",
+      "type": "object",
+      "properties": {
+        "mode": {
+          "description": "The operation mode (e.g., 'archive' or 'delete').",
+          "type": "string",
+          "enum": ["archive", "delete"] 
+        },
+        "interval": {
+          "description": "Interval at which the cleanup runs.",
+          "type": "string"
+        },
+        "directory": {
+          "description": "Target directory for operations.",
+          "type": "string"
+        }
+      },
+      "if": {
+        "properties": {
+          "mode": { "const": "archive" }
+        }
+      },
+      "then": {
+        "required": ["interval", "directory"]
+      }
+    },
+    "retention-in-memory": {
+      "description": "Keep the metrics within memory for given time interval. Retention for X hours, then the metrics would be freed.",
+      "type": "string"
+    },
+    "memory-cap": {
+      "description": "Upper memory capacity limit used by metricstore in GB",
+      "type": "integer"
+    },
+    "nats-subscriptions": {
+      "description": "Array of various subscriptions. Allows to subscribe to different subjects and publishers.",
+      "type": "array",
+      "items": {
+        "type": "object",
+        "properties": {
+          "subscribe-to": {
+            "description": "Subject name",
+            "type": "string"
+          },
+          "cluster-tag": {
+            "description": "Optional: Allow lines without a cluster tag, use this as default",
+            "type": "string"
+          }
+        }
+				"required": ["subscribe-to"]
+      }
+    }
+  },
+  "required": ["checkpoints", "retention-in-memory", "memory-cap"]
+}`