Java

Glacier Download Archive

See more Amazon Glacier Examples

Demonstrates how to download an Amazon Glacier archive. Downloading a Glacier archive is a two step process. First an archive retrieval job is initiated. After it completes, the job output is downloaded (i.e. the archive contents are downloaded.)

Note: This example requires Chilkat v9.5.0.78 or greater.

Chilkat2 Java

import com.chilkatsoft.chilkat2.AuthAws;
import com.chilkatsoft.chilkat2.ChilkatException;
import com.chilkatsoft.chilkat2.Rest;
import com.chilkatsoft.chilkat2.Stream;

public class ChilkatExample {

    public static void main(String[] args) {
        // This example requires the Chilkat API to have been previously unlocked.
        // See Global Unlock Sample for sample code.

        Rest rest = new Rest();

        // Connect to the Amazon AWS REST server in the desired region.
        boolean bTls = true;
        int port = 443;
        boolean bAutoReconnect = true;
        rest.connect("glacier.us-west-2.amazonaws.com", port, bTls, bAutoReconnect);

        // Provide AWS credentials.
        AuthAws authAws = new AuthAws();
        authAws.setAccessKey("AWS_ACCESS_KEY");
        authAws.setSecretKey("AWS_SECRET_KEY");
        authAws.setServiceName("glacier");
        authAws.setRegion("us-west-2");

        rest.setAuthAws(authAws);

        // --------------------------------------------------------------------------
        // Note: The above REST connection and setup of the AWS credentials
        // can be done once.  After connecting, any number of REST calls can be made.
        // The "auto reconnect" property passed to rest.Connect indicates that if
        // the connection is lost, a REST method call will automatically reconnect
        // if needed.
        // --------------------------------------------------------------------------

        // For more information, see Glacier Retrieve Job Output Reference Documentation
        //
        rest.addHeader("x-amz-glacier-version", "2012-06-01");

        // To download an archive, we'll make several method calls:
        // 1) Send the HTTPS GET request.
        // 2) Get the response body.
        // 3) If the response status code indicates success, stream the response body (i.e the archive data) to a file.
        // 4) If the response status code indicates an error, get the JSON error response.

        // Send the GET request.
        try {
            rest.sendReqNoBody("GET", "/AWS_ACCOUNT_ID/vaults/chilkat/jobs/JOB_ID/output");
        } catch (ChilkatException e) {
            System.out.println(e.getLastErrorText());
            return;
        }

        // Read the response header.
        int responseStatusCode = rest.readResponseHeader();
        if (responseStatusCode < 0) {
            System.out.println(rest.getLastErrorText());
            return;
        }

        System.out.println("Response status code = " + responseStatusCode);

        // We expect a 200 response status if the archive data is coming.
        // Otherwise, we'll get a JSON response body with an error message(or no response body).
        if (responseStatusCode == 200) {
            Stream bodyStream = new Stream();

            // The stream's sink will be a file.
            bodyStream.setSinkFile("qa_output/archiveData.dat");

            // Read the response body to the stream.
            try {
                rest.readRespBodyStream(bodyStream, true);
            } catch (ChilkatException e) {
                System.out.println(e.getLastErrorText());
                return;
            }

            System.out.println("Successfully received the archive file.");
        } else {
            String jsonError = null;
            try {
                jsonError = rest.readRespBodyString();
                System.out.println(jsonError);
            } catch (ChilkatException e) {
                System.out.println(e.getLastErrorText());
            }
        }
    }
}