refactor: add persistence groundwork and structured logging

manager/src/wrapperRegistry.ts

@@ -1,4 +1,8 @@
+import { getLogger } from "./logger";
 import { WrapperStatusMessage } from "server-manager-shared";
+import { JsonFileStore } from "./persistence/jsonFileStore";
+
+const logger = getLogger("WrapperRegistry");
 
 export interface WrapperInfo {
 
@@ -25,35 +29,91 @@ export interface WrapperInfo {
 
 }
 
+interface WrapperRegistryState {
+    wrappers: Array<{
+        id:string;
+        hostname:string;
+        commandQueue:string;
+        cpu:number;
+        ram:number;
+    }>;
+}
+
 
 
 
 
 export class WrapperRegistry {
 
-
     private wrappers =
         new Map<string, WrapperInfo>();
 
+    private readonly persistence =
+        new JsonFileStore<WrapperRegistryState>(
+            "wrapperRegistry-state.json"
+        );
 
 
 
 
+
+    async init(): Promise<void> {
+        const state = await this.persistence.load();
+
+        if (!state)
+            return;
+
+        for (const wrapperData of state.wrappers) {
+            this.wrappers.set(
+                wrapperData.id,
+                {
+                    id: wrapperData.id,
+                    hostname: wrapperData.hostname,
+                    commandQueue: wrapperData.commandQueue,
+                    cpu: wrapperData.cpu,
+                    ram: wrapperData.ram,
+                    ramFree: wrapperData.ram,
+                    online: false,
+                    lastHeartbeat: 0,
+                    servers: []
+                }
+            );
+        }
+    }
+
+    private toState(): WrapperRegistryState {
+        return {
+            wrappers: Array.from(this.wrappers.values()).map(
+                wrapper => ({
+                    id: wrapper.id,
+                    hostname: wrapper.hostname,
+                    commandQueue: wrapper.commandQueue,
+                    cpu: wrapper.cpu,
+                    ram: wrapper.ram
+                })
+            )
+        };
+    }
+
+    private async saveState(): Promise<void> {
+        await this.persistence.save(
+            this.toState()
+        );
+    }
+
     add(wrapper:WrapperInfo){
 
-
         this.wrappers.set(
             wrapper.id,
             wrapper
         );
 
-
-        console.log(
-            "Wrapper gespeichert:",
+        logger.info(
+            "Wrapper added:",
             wrapper.id
         );
 
-
+        void this.saveState();
     }
 
 
@@ -110,13 +170,12 @@ export class WrapperRegistry {
 
     update(wrapper:WrapperInfo){
 
-
         this.wrappers.set(
             wrapper.id,
             wrapper
         );
 
-
+        void this.saveState();
     }
 
 
@@ -140,7 +199,7 @@ export class WrapperRegistry {
                 wrapper.online = false;
 
 
-                console.log(
+                logger.warn(
                     "Wrapper offline:",
                     wrapper.id
                 );
@@ -156,7 +215,6 @@ export class WrapperRegistry {
 
     updateStatus(data: WrapperStatusMessage){
 
-
         const wrapper =
             this.wrappers.get(
                 data.wrapperId