Contoh S3 Glacier menggunakan SDK untuk Java 2.x

Contoh kode berikut menunjukkan cara melakukan tindakan dan mengimplementasikan skenario umum dengan menggunakan gletser AWS SDK for Java 2.x with S3.

Tindakan adalah kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Meskipun tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks pada skenario terkait dan contoh lintas layanan.

Skenario adalah contoh kode yang menunjukkan cara menyelesaikan tugas tertentu dengan memanggil beberapa fungsi dalam layanan yang sama.

Setiap contoh menyertakan tautan ke GitHub, di mana Anda dapat menemukan petunjuk tentang cara mengatur dan menjalankan kode dalam konteks.

Topik

Tindakan

Tindakan

Contoh kode berikut menunjukkan cara menggunakanCreateVault.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.CreateVaultRequest;
import software.amazon.awssdk.services.glacier.model.CreateVaultResponse;
import software.amazon.awssdk.services.glacier.model.GlacierException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class CreateVault {
    public static void main(String[] args) {
        final String usage = """

                Usage:    <vaultName>

                Where:
                   vaultName - The name of the vault to create.

                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String vaultName = args[0];
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        createGlacierVault(glacier, vaultName);
        glacier.close();
    }

    public static void createGlacierVault(GlacierClient glacier, String vaultName) {
        try {
            CreateVaultRequest vaultRequest = CreateVaultRequest.builder()
                    .vaultName(vaultName)
                    .build();

            CreateVaultResponse createVaultResult = glacier.createVault(vaultRequest);
            System.out.println("The URI of the new vault is " + createVaultResult.location());

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

Untuk API detailnya, lihat CreateVaultdi AWS SDK for Java 2.x APIReferensi.

Contoh kode berikut menunjukkan cara menggunakanDeleteArchive.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.DeleteArchiveRequest;
import software.amazon.awssdk.services.glacier.model.GlacierException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DeleteArchive {
    public static void main(String[] args) {
        final String usage = """

                Usage:    <vaultName> <accountId> <archiveId>

                Where:
                   vaultName - The name of the vault that contains the archive to delete.
                   accountId - The account ID value.
                   archiveId - The archive ID value.
                """;

        if (args.length != 3) {
            System.out.println(usage);
            System.exit(1);
        }

        String vaultName = args[0];
        String accountId = args[1];
        String archiveId = args[2];
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        deleteGlacierArchive(glacier, vaultName, accountId, archiveId);
        glacier.close();
    }

    public static void deleteGlacierArchive(GlacierClient glacier, String vaultName, String accountId,
            String archiveId) {
        try {
            DeleteArchiveRequest delArcRequest = DeleteArchiveRequest.builder()
                    .vaultName(vaultName)
                    .accountId(accountId)
                    .archiveId(archiveId)
                    .build();

            glacier.deleteArchive(delArcRequest);
            System.out.println("The archive was deleted.");

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

Untuk API detailnya, lihat DeleteArchivedi AWS SDK for Java 2.x APIReferensi.

Contoh kode berikut menunjukkan cara menggunakanDeleteVault.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.DeleteVaultRequest;
import software.amazon.awssdk.services.glacier.model.GlacierException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class DeleteVault {
    public static void main(String[] args) {

        final String usage = """

                Usage:    <vaultName>

                Where:
                   vaultName - The name of the vault to delete.\s
                """;

        if (args.length != 1) {
            System.out.println(usage);
            System.exit(1);
        }

        String vaultName = args[0];
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        deleteGlacierVault(glacier, vaultName);
        glacier.close();
    }

    public static void deleteGlacierVault(GlacierClient glacier, String vaultName) {
        try {
            DeleteVaultRequest delVaultRequest = DeleteVaultRequest.builder()
                    .vaultName(vaultName)
                    .build();

            glacier.deleteVault(delVaultRequest);
            System.out.println("The vault was deleted!");

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

Untuk API detailnya, lihat DeleteVaultdi AWS SDK for Java 2.x APIReferensi.

Contoh kode berikut menunjukkan cara menggunakanInitiateJob.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.

Ambil inventaris lemari besi.


import software.amazon.awssdk.core.ResponseBytes;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.JobParameters;
import software.amazon.awssdk.services.glacier.model.InitiateJobResponse;
import software.amazon.awssdk.services.glacier.model.GlacierException;
import software.amazon.awssdk.services.glacier.model.InitiateJobRequest;
import software.amazon.awssdk.services.glacier.model.DescribeJobRequest;
import software.amazon.awssdk.services.glacier.model.DescribeJobResponse;
import software.amazon.awssdk.services.glacier.model.GetJobOutputRequest;
import software.amazon.awssdk.services.glacier.model.GetJobOutputResponse;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class ArchiveDownload {
    public static void main(String[] args) {

        final String usage = """

                Usage:    <vaultName> <accountId> <path>

                Where:
                   vaultName - The name of the vault.
                   accountId - The account ID value.
                   path - The path where the file is written to.
                """;

        if (args.length != 3) {
            System.out.println(usage);
            System.exit(1);
        }

        String vaultName = args[0];
        String accountId = args[1];
        String path = args[2];
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        String jobNum = createJob(glacier, vaultName, accountId);
        checkJob(glacier, jobNum, vaultName, accountId, path);
        glacier.close();
    }

    public static String createJob(GlacierClient glacier, String vaultName, String accountId) {
        try {
            JobParameters job = JobParameters.builder()
                    .type("inventory-retrieval")
                    .build();

            InitiateJobRequest initJob = InitiateJobRequest.builder()
                    .jobParameters(job)
                    .accountId(accountId)
                    .vaultName(vaultName)
                    .build();

            InitiateJobResponse response = glacier.initiateJob(initJob);
            System.out.println("The job ID is: " + response.jobId());
            System.out.println("The relative URI path of the job is: " + response.location());
            return response.jobId();

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);

        }
        return "";
    }

    // Poll S3 Glacier = Polling a Job may take 4-6 hours according to the
    // Documentation.
    public static void checkJob(GlacierClient glacier, String jobId, String name, String account, String path) {
        try {
            boolean finished = false;
            String jobStatus;
            int yy = 0;

            while (!finished) {
                DescribeJobRequest jobRequest = DescribeJobRequest.builder()
                        .jobId(jobId)
                        .accountId(account)
                        .vaultName(name)
                        .build();

                DescribeJobResponse response = glacier.describeJob(jobRequest);
                jobStatus = response.statusCodeAsString();

                if (jobStatus.compareTo("Succeeded") == 0)
                    finished = true;
                else {
                    System.out.println(yy + " status is: " + jobStatus);
                    Thread.sleep(1000);
                }
                yy++;
            }

            System.out.println("Job has Succeeded");
            GetJobOutputRequest jobOutputRequest = GetJobOutputRequest.builder()
                    .jobId(jobId)
                    .vaultName(name)
                    .accountId(account)
                    .build();

            ResponseBytes<GetJobOutputResponse> objectBytes = glacier.getJobOutputAsBytes(jobOutputRequest);
            // Write the data to a local file.
            byte[] data = objectBytes.asByteArray();
            File myFile = new File(path);
            OutputStream os = new FileOutputStream(myFile);
            os.write(data);
            System.out.println("Successfully obtained bytes from a Glacier vault");
            os.close();

        } catch (GlacierException | InterruptedException | IOException e) {
            System.out.println(e.getMessage());
            System.exit(1);

        }
    }
}

Untuk API detailnya, lihat InitiateJobdi AWS SDK for Java 2.x APIReferensi.

Contoh kode berikut menunjukkan cara menggunakanListVaults.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.model.ListVaultsRequest;
import software.amazon.awssdk.services.glacier.model.ListVaultsResponse;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.DescribeVaultOutput;
import software.amazon.awssdk.services.glacier.model.GlacierException;
import java.util.List;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class ListVaults {
    public static void main(String[] args) {
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        listAllVault(glacier);
        glacier.close();
    }

    public static void listAllVault(GlacierClient glacier) {
        boolean listComplete = false;
        String newMarker = null;
        int totalVaults = 0;
        System.out.println("Your Amazon Glacier vaults:");
        try {
            while (!listComplete) {
                ListVaultsResponse response = null;
                if (newMarker != null) {
                    ListVaultsRequest request = ListVaultsRequest.builder()
                            .marker(newMarker)
                            .build();

                    response = glacier.listVaults(request);
                } else {
                    ListVaultsRequest request = ListVaultsRequest.builder()
                            .build();
                    response = glacier.listVaults(request);
                }

                List<DescribeVaultOutput> vaultList = response.vaultList();
                for (DescribeVaultOutput v : vaultList) {
                    totalVaults += 1;
                    System.out.println("* " + v.vaultName());
                }

                // Check for further results.
                newMarker = response.marker();
                if (newMarker == null) {
                    listComplete = true;
                }
            }

            if (totalVaults == 0) {
                System.out.println("No vaults found.");
            }

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
    }
}

Untuk API detailnya, lihat ListVaultsdi AWS SDK for Java 2.x APIReferensi.

Contoh kode berikut menunjukkan cara menggunakanUploadArchive.

SDKuntuk Java 2.x

catatan

Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.


import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.glacier.GlacierClient;
import software.amazon.awssdk.services.glacier.model.UploadArchiveRequest;
import software.amazon.awssdk.services.glacier.model.UploadArchiveResponse;
import software.amazon.awssdk.services.glacier.model.GlacierException;
import java.io.File;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.io.FileInputStream;
import java.io.IOException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * Before running this Java V2 code example, set up your development
 * environment, including your credentials.
 *
 * For more information, see the following documentation topic:
 *
 * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html
 */
public class UploadArchive {

    static final int ONE_MB = 1024 * 1024;

    public static void main(String[] args) {
        final String usage = """

                Usage:   <strPath> <vaultName>\s

                Where:
                   strPath - The path to the archive to upload (for example, C:\\AWS\\test.pdf).
                   vaultName - The name of the vault.
                """;

        if (args.length != 2) {
            System.out.println(usage);
            System.exit(1);
        }

        String strPath = args[0];
        String vaultName = args[1];
        File myFile = new File(strPath);
        Path path = Paths.get(strPath);
        GlacierClient glacier = GlacierClient.builder()
                .region(Region.US_EAST_1)
                .build();

        String archiveId = uploadContent(glacier, path, vaultName, myFile);
        System.out.println("The ID of the archived item is " + archiveId);
        glacier.close();
    }

    public static String uploadContent(GlacierClient glacier, Path path, String vaultName, File myFile) {
        // Get an SHA-256 tree hash value.
        String checkVal = computeSHA256(myFile);
        try {
            UploadArchiveRequest uploadRequest = UploadArchiveRequest.builder()
                    .vaultName(vaultName)
                    .checksum(checkVal)
                    .build();

            UploadArchiveResponse res = glacier.uploadArchive(uploadRequest, path);
            return res.archiveId();

        } catch (GlacierException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        return "";
    }

    private static String computeSHA256(File inputFile) {
        try {
            byte[] treeHash = computeSHA256TreeHash(inputFile);
            System.out.printf("SHA-256 tree hash = %s\n", toHex(treeHash));
            return toHex(treeHash);

        } catch (IOException ioe) {
            System.err.format("Exception when reading from file %s: %s", inputFile, ioe.getMessage());
            System.exit(-1);

        } catch (NoSuchAlgorithmException nsae) {
            System.err.format("Cannot locate MessageDigest algorithm for SHA-256: %s", nsae.getMessage());
            System.exit(-1);
        }
        return "";
    }

    public static byte[] computeSHA256TreeHash(File inputFile) throws IOException,
            NoSuchAlgorithmException {

        byte[][] chunkSHA256Hashes = getChunkSHA256Hashes(inputFile);
        return computeSHA256TreeHash(chunkSHA256Hashes);
    }

    /**
     * Computes an SHA256 checksum for each 1 MB chunk of the input file. This
     * includes the checksum for the last chunk, even if it's smaller than 1 MB.
     */
    public static byte[][] getChunkSHA256Hashes(File file) throws IOException,
            NoSuchAlgorithmException {

        MessageDigest md = MessageDigest.getInstance("SHA-256");
        long numChunks = file.length() / ONE_MB;
        if (file.length() % ONE_MB > 0) {
            numChunks++;
        }

        if (numChunks == 0) {
            return new byte[][] { md.digest() };
        }

        byte[][] chunkSHA256Hashes = new byte[(int) numChunks][];
        FileInputStream fileStream = null;

        try {
            fileStream = new FileInputStream(file);
            byte[] buff = new byte[ONE_MB];

            int bytesRead;
            int idx = 0;

            while ((bytesRead = fileStream.read(buff, 0, ONE_MB)) > 0) {
                md.reset();
                md.update(buff, 0, bytesRead);
                chunkSHA256Hashes[idx++] = md.digest();
            }

            return chunkSHA256Hashes;

        } finally {
            if (fileStream != null) {
                try {
                    fileStream.close();
                } catch (IOException ioe) {
                    System.err.printf("Exception while closing %s.\n %s", file.getName(),
                            ioe.getMessage());
                }
            }
        }
    }

    /**
     * Computes the SHA-256 tree hash for the passed array of 1 MB chunk
     * checksums.
     */
    public static byte[] computeSHA256TreeHash(byte[][] chunkSHA256Hashes)
            throws NoSuchAlgorithmException {

        MessageDigest md = MessageDigest.getInstance("SHA-256");
        byte[][] prevLvlHashes = chunkSHA256Hashes;
        while (prevLvlHashes.length > 1) {
            int len = prevLvlHashes.length / 2;
            if (prevLvlHashes.length % 2 != 0) {
                len++;
            }

            byte[][] currLvlHashes = new byte[len][];
            int j = 0;
            for (int i = 0; i < prevLvlHashes.length; i = i + 2, j++) {

                // If there are at least two elements remaining.
                if (prevLvlHashes.length - i > 1) {

                    // Calculate a digest of the concatenated nodes.
                    md.reset();
                    md.update(prevLvlHashes[i]);
                    md.update(prevLvlHashes[i + 1]);
                    currLvlHashes[j] = md.digest();

                } else { // Take care of the remaining odd chunk
                    currLvlHashes[j] = prevLvlHashes[i];
                }
            }

            prevLvlHashes = currLvlHashes;
        }

        return prevLvlHashes[0];
    }

    /**
     * Returns the hexadecimal representation of the input byte array
     */
    public static String toHex(byte[] data) {
        StringBuilder sb = new StringBuilder(data.length * 2);
        for (byte datum : data) {
            String hex = Integer.toHexString(datum & 0xFF);

            if (hex.length() == 1) {
                // Append leading zero.
                sb.append("0");
            }
            sb.append(hex);
        }
        return sb.toString().toLowerCase();
    }
}

Untuk API detailnya, lihat UploadArchivedi AWS SDK for Java 2.x APIReferensi.

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