Exemplos do S3 Glacier usando SDK para Java 2.x

Os exemplos de código a seguir mostram como realizar ações e implementar cenários comuns usando o AWS SDK for Java 2.x com o S3 Glacier.

Ações são trechos de código de programas maiores e devem ser executadas em contexto. Embora as ações mostrem como chamar funções de serviço específicas, é possível ver as ações contextualizadas em seus devidos cenários e exemplos entre serviços.

Cenários são exemplos de código que mostram como realizar uma tarefa específica chamando várias funções dentro do mesmo serviço.

Cada exemplo inclui um link para GitHub, onde você pode encontrar instruções sobre como configurar e executar o código no contexto.

Tópicos

Ações

Ações

O código de exemplo a seguir mostra como usar CreateVault.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.


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);
        }
    }
}

Para API obter detalhes, consulte CreateVaultem AWS SDK for Java 2.x APIReferência.

O código de exemplo a seguir mostra como usar DeleteArchive.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.


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);
        }
    }
}

Para API obter detalhes, consulte DeleteArchiveem AWS SDK for Java 2.x APIReferência.

O código de exemplo a seguir mostra como usar DeleteVault.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.


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);
        }
    }
}

Para API obter detalhes, consulte DeleteVaultem AWS SDK for Java 2.x APIReferência.

O código de exemplo a seguir mostra como usar InitiateJob.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.

Recupere um inventário do cofre.


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);

        }
    }
}

Para API obter detalhes, consulte InitiateJobem AWS SDK for Java 2.x APIReferência.

O código de exemplo a seguir mostra como usar ListVaults.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.


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);
        }
    }
}

Para API obter detalhes, consulte ListVaultsem AWS SDK for Java 2.x APIReferência.

O código de exemplo a seguir mostra como usar UploadArchive.

SDKpara Java 2.x

nota

Tem mais sobre GitHub. Encontre o exemplo completo e veja como configurar e executar no AWS Code Examples Repository.


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();
    }
}

Para API obter detalhes, consulte UploadArchiveem AWS SDK for Java 2.x APIReferência.

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