如何使用 Java 将图像从 Azure 存储帐户复制到 ARM 存储帐户？

Question

我想使用 Java 将现有自定义映像从 Azure 经典存储帐户复制到 Azure ARM 存储帐户。 （使用 Java 编程实现 azCopy）

Answer 1

听起来您想使用 Java 编程实现下面的azCopy cmdlet。

Blob：Copy single blob across Storage accounts

AzCopy /Source:https://sourceaccount.blob.core.windows.net/mycontainer1 /Dest:https://destaccount.blob.core.windows.net/mycontainer2 /SourceKey:key1 /DestKey:key2 /Pattern:abc.txt

作为参考，这是我使用依赖于Azure Storage Client SDK for Java 的 Java 编程实现上述 cmdlet 的代码示例。

复制的关键方法是CloudBlob.startCopy。

import java.net.URI;
import java.net.URISyntaxException;
import java.security.InvalidKeyException;
import java.util.HashMap;
import java.util.Map;

import com.microsoft.azure.storage.StorageCredentials;
import com.microsoft.azure.storage.StorageException;
import com.microsoft.azure.storage.StorageUri;
import com.microsoft.azure.storage.blob.CloudBlob;
import com.microsoft.azure.storage.blob.CloudBlockBlob;

public class AzCopySample {

    private static final String STORAGE_CONNECTION_STRING_TEMPLATE = "DefaultEndpointsProtocol=https;AccountName=%s;AccountKey=%s;";

    public static CloudBlob genBlobReference(Map<String, String> cmdOptions, String option) throws URISyntaxException, InvalidKeyException, StorageException {
        URI uri = new URI(cmdOptions.get(option));
        String host = uri.getHost();
        String account = host.substring(0, host.indexOf("."));
        String key = cmdOptions.get(option+"Key");
        String connectionString = String.format(STORAGE_CONNECTION_STRING_TEMPLATE, account, key);
        StorageCredentials credentials = StorageCredentials.tryParseCredentials(connectionString);
        StorageUri storageUri = new StorageUri(uri);
        CloudBlob blob = new CloudBlockBlob(storageUri, credentials);
        return blob;
    }

    public static void main(String[] args) throws URISyntaxException, InvalidKeyException, StorageException {
        String command = "AzCopy /Source:https://sourceaccount.blob.core.windows.net/mycontainer1 /Dest:https://destaccount.blob.core.windows.net/mycontainer2 /SourceKey:key1 /DestKey:key2 /Pattern:abc.txt";
        String[] cmdItems = command.split(" ");
        Map<String, String> cmdOptions = new HashMap<>();
        for(int i = 1; i < cmdItems.length; i++) {
            String cmdItem = cmdItems[i];
            int index = cmdItem.indexOf(":");
            String key = cmdItem.substring(0, index);
            String value = cmdItem.substring(index+1);
            cmdOptions.put(key, value);
        }
        CloudBlob source = genBlobReference(cmdOptions, "/Source");
        CloudBlob dest = genBlobReference(cmdOptions, "/Dest");
        dest.startCopy(source.getUri());
    }

}