io.druid.storage.azure.AzureByteSource.java Source code

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Here is the source code for io.druid.storage.azure.AzureByteSource.java

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/*
 * Druid - a distributed column store.
 *  Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 *  Licensed 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 io.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 {

    final private AzureStorage azureStorage;
    final private String containerName;
    final private 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);
        }
    }
}