Java tutorial
/* * 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.apache.druid.storage.azure; import com.google.common.base.Throwables; import com.google.common.io.ByteSource; import com.microsoft.azure.storage.StorageException; import java.io.IOException; import java.io.InputStream; import java.net.URISyntaxException; public class AzureByteSource extends ByteSource { private final AzureStorage azureStorage; private final String containerName; private final String blobPath; public AzureByteSource(AzureStorage azureStorage, String containerName, String blobPath) { this.azureStorage = azureStorage; this.containerName = containerName; this.blobPath = blobPath; } @Override public InputStream openStream() throws IOException { try { return azureStorage.getBlobInputStream(containerName, blobPath); } catch (StorageException | URISyntaxException e) { if (AzureUtils.AZURE_RETRY.apply(e)) { throw new IOException("Recoverable exception", e); } throw Throwables.propagate(e); } } }