fix(core): update

ts/levelcache.classes.cache.s3manager.ts

@@ -1,6 +1,67 @@
 import * as plugins from './levelcache.plugins';
+import { AbstractCache } from './levelcache.abstract.classes.cache';
+import { LevelCache } from './levelcache.classes.levelcache';
+import { CacheEntry } from './levelcache.classes.cacheentry';
 
 /**
  *
  */
-export class CacheS3Manager {}
+export class CacheS3Manager extends AbstractCache {
+  private levelCacheRef: LevelCache;
+  private smartbucket: plugins.smartbucket.SmartBucket;
+  private s3CacheBucket: plugins.smartbucket.Bucket;
+  private s3CacheDir: plugins.smartbucket.Directory;
+  private readyDeferred = plugins.smartpromise.defer<void>();
+
+  public ready = this.readyDeferred.promise;
+  public status: 'active' | 'inactive';
+
+  constructor(levelCacheRefArg: LevelCache) {
+    super();
+    this.levelCacheRef = levelCacheRefArg;
+    this.init();
+  }
+
+  public async init() {
+    if (this.levelCacheRef.options.s3Config) {
+      this.smartbucket = new plugins.smartbucket.SmartBucket(this.levelCacheRef.options.s3Config);
+      this.s3CacheBucket = await this.smartbucket.getBucketByName('');
+      this.s3CacheDir = await (await this.s3CacheBucket.getBaseDirectory()).getSubDirectoryByName(
+        this.levelCacheRef.options.cacheId
+      );
+      if (this.levelCacheRef.options.maxS3StorageInMB) {
+        console.log(`cache level S3 activated with ${this.levelCacheRef.options.maxS3StorageInMB}`);
+      } else {
+        console.log(`s3 cache started without limit. Automatically applying timebox of 1 month`);
+      }
+      this.status = 'active';
+    } else {
+      this.status = 'inactive';
+    }
+    this.readyDeferred.resolve();
+  }
+
+  public async retrieveCacheEntryByKey(keyArg: string): Promise<CacheEntry> {
+    const jsonFileString = (await this.s3CacheDir.fastGet(encodeURIComponent(keyArg))).toString();
+    const cacheEntry = CacheEntry.fromStorageJsonString(jsonFileString);
+    return cacheEntry;
+  }
+
+  public async storeCacheEntryByKey(keyArg: string, cacheEntryArg: CacheEntry) {
+    await this.s3CacheDir.fastStore(encodeURIComponent(keyArg), cacheEntryArg.toStorageJsonString());
+  }
+
+  public async checkKeyPresence(keyArg: string): Promise<boolean> {
+    const files = await this.s3CacheDir.listFiles();
+    for (const file of files) {
+      if (file.name === keyArg) {
+        return true;
+      }
+    }
+    return false;
+  }
+
+  public async clean() {
+    await this.s3CacheDir.deleteWithAllContents();
+  }
+}