(Java) Amazon Glacier Get Vault Access Policy

Demonstrates how to retrieve the access-policy subresource set on the vault

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import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

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

    CkRest rest = new CkRest();

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

    // Provide AWS credentials.
    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");
    authAws.put_ServiceName("glacier");
    authAws.put_Region("us-west-2");

    success = 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 Get Vault Access Policy Reference Documentation
    // 
    rest.AddHeader("x-amz-glacier-version","2012-06-01");

    // Get the access policy for the "chilkat" vault.
    CkStringBuilder sbResponseBody = new CkStringBuilder();
    success = rest.FullRequestNoBodySb("GET","/AWS_ACCOUNT_ID/vaults/chilkat/access-policy",sbResponseBody);
    if (success != true) {
        System.out.println(rest.lastErrorText());
        return;
        }

    int respStatusCode = rest.get_ResponseStatusCode();
    if (respStatusCode >= 400) {
        System.out.println("Response Status Code = " + respStatusCode);
        System.out.println("Response Header:");
        System.out.println(rest.responseHeader());
        System.out.println("Response Body:");
        System.out.println(sbResponseBody.getAsString());
        return;
        }

    // Success is indicated by a 200 response status.
    System.out.println("response status code = " + respStatusCode);

    CkJsonObject json = new CkJsonObject();
    json.LoadSb(sbResponseBody);
    json.put_EmitCompact(false);

    // Returns JSON such as this:
    // {
    //   "Policy": "{\"Version\":\"2012-10-17\",\"Statement\":[{\"Sid\":\"Define-owner-access-rights\",\"Effect\":\"Allow\",\"Principal\":{\"AWS\":\"arn:aws:iam::9999999999999:root\"},\"Action\":\"glacier:DeleteArchive\",\"Resource\":\"arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat\"}]}"
    // }

    // Unwrap...
    CkJsonObject jsonPolicy = new CkJsonObject();
    jsonPolicy.Load(json.stringOf("Policy"));
    jsonPolicy.put_EmitCompact(false);

    System.out.println(jsonPolicy.emit());
    System.out.println("----");

    // The jsonPolicy contains:

    // {
    //   "Version": "2012-10-17",
    //   "Statement": [
    //     {
    //       "Sid": "Define-owner-access-rights",
    //       "Effect": "Allow",
    //       "Principal": {
    //         "AWS": "arn:aws:iam::9999999999999:root"
    //       },
    //       "Action": "glacier:DeleteArchive",
    //       "Resource": "arn:aws:glacier:us-west-2:9999999999999:vaults/chilkat"
    //     }
    //   ]
    // }
    // 

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

    // To parse the above contents of jsonPolicy...
    String Version;
    int i;
    int count_i;
    String Sid;
    String Effect;
    String PrincipalAWS;
    String Action;
    String Resource;

    Version = jsonPolicy.stringOf("Version");
    i = 0;
    count_i = jsonPolicy.SizeOfArray("Statement");
    while (i < count_i) {
        jsonPolicy.put_I(i);
        Sid = jsonPolicy.stringOf("Statement[i].Sid");
        Effect = jsonPolicy.stringOf("Statement[i].Effect");
        PrincipalAWS = jsonPolicy.stringOf("Statement[i].Principal.AWS");
        Action = jsonPolicy.stringOf("Statement[i].Action");
        Resource = jsonPolicy.stringOf("Statement[i].Resource");
        i = i+1;
        }
  }
}