handle accelerate and dual-stack aws endpoints

api/src/main/java/io/minio/BucketRegionCache.java → api/src/main/java/io/minio/AwsRegionCache.java

@@ -20,38 +20,24 @@
 import java.util.concurrent.ConcurrentHashMap;
 
 /** A singleton bucket/region cache map. */
-enum BucketRegionCache {
+enum AwsRegionCache {
   INSTANCE;
   private final Map<String, String> regionMap = new ConcurrentHashMap<>();
 
-  /** Returns AWS region for given bucket name. */
-  public String region(String bucketName) {
-    if (bucketName == null) {
-      return "us-east-1";
-    }
-
-    String region = this.regionMap.get(bucketName);
-    if (region == null) {
-      return "us-east-1";
-    } else {
-      return region;
-    }
-  }
-
-  /** Sets bucket name and its region to BucketRegionCache. */
+  /** Sets bucket name and its region. */
   public void set(String bucketName, String region) {
     this.regionMap.put(bucketName, region);
   }
 
-  /** Removes region cache of the bucket if any. */
+  /** Gets region of bucket name. */
+  public String get(String bucketName) {
+    return this.regionMap.get(bucketName);
+  }
+
+  /** Removes bucket name and its region. */
   public void remove(String bucketName) {
     if (bucketName != null) {
       this.regionMap.remove(bucketName);
     }
   }
-
-  /** Returns true if given bucket name is in the map else false. */
-  public boolean exists(String bucketName) {
-    return this.regionMap.get(bucketName) != null;
-  }
 }