/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.jclouds.azureblob;
import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Throwables.propagate;
import static com.google.common.util.concurrent.Futures.immediateFuture;
import org.jclouds.Fallback;
import org.jclouds.azure.storage.AzureStorageResponseException;
import com.google.common.util.concurrent.ListenableFuture;
public final class AzureBlobFallbacks {
private AzureBlobFallbacks() {
}
public static final class FalseIfContainerAlreadyExists implements Fallback<Boolean> {
@Override
public ListenableFuture<Boolean> create(Throwable t) throws Exception {
return immediateFuture(createOrPropagate(t));
}
@Override
public Boolean createOrPropagate(Throwable t) throws Exception {
if (checkNotNull(t, "throwable") instanceof AzureStorageResponseException) {
AzureStorageResponseException responseException = AzureStorageResponseException.class.cast(t);
if ("ContainerAlreadyExists".equals(responseException.getError().getCode())) {
return false;
}
}
throw propagate(t);
}
}
}