networkDesign: create cache symlink when resuming task

The main cache directory may have been reset when the task is resumed,
so we need to create the symlink in that case also.

Author: tahini

packages/transition-backend/src/services/networkDesign/transitNetworkDesign/TransitNetworkDesignJobWrapper.ts

@@ -207,6 +207,16 @@ export class TransitNetworkDesignJobWrapper<
             `${absoluteCacheDirectory}/services.capnpbin`,
             true
         );
+
+        this.addCacheSymlink();
+
+        console.log(`Prepared cache directory files to ${absoluteCacheDirectory} from ${mainCacheDirectory}`);
+    };
+
+    addCacheSymlink = () => {
+        const absoluteCacheDirectory = this.getCacheDirectory();
+        const mainCacheDirectory = `${fileManager.directoryManager.cacheDirectory}/${config.projectShortname}`;
+
         // FIXME HACK Add a symlink from mainCacheDirectory to the job cache
         // directory because the path in the json to capnp server is relative to
         // main cache path Create symbolic link pointing to the job cache
@@ -234,8 +244,6 @@ export class TransitNetworkDesignJobWrapper<
         } catch (error) {
             console.warn(`Failed to create symbolic link: ${error}`);
         }
-
-        console.log(`Prepared cache directory files to ${absoluteCacheDirectory} from ${mainCacheDirectory}`);
     };
 
     async addMessages(messages: {

packages/transition-backend/src/services/networkDesign/transitNetworkDesign/evolutionary/EvolutionaryTransitNetworkDesignJob.ts

@@ -259,6 +259,9 @@ class EvolutionaryTransitNetworkDesignJobExecutor extends TransitNetworkDesignJo
         // FIXME We need to have the paths and lines loaded in a CollectionManager to save the scenarios and re-generate schedules at the end. But not the whole data
         await this.loadServerData(serviceLocator.socketEventManager);
 
+        // Add the symlink to the cache data, the main cache may have been reinitialized since the last execution.
+        this.addCacheSymlink();
+
         // Get the simulated lines from cache, to make sure the order is the same as before
         const simulatedLineCollection = await lineCollectionFromCache(this.getCacheDirectory() + '/simulatedLines');
         this.simulatedLineCollection = simulatedLineCollection;