-(SecurityTokenServiceAssumeRoleWithWebIdentityResponse *)getAmazonSecurityTokenServiceWithAWSRoleResource:(NSString*)roleResourceName {

//get Amazon Security Token Service With AWS Role Resource for Facebook


SecurityTokenServiceAssumeRoleWithWebIdentityRequest *awsSTRequest = [[SecurityTokenServiceAssumeRoleWithWebIdentityRequest alloc] init];
awsSTRequest.roleArn = roleResourceName;
awsSTRequest.roleSessionName = userFacebookID;
awsSTRequest.webIdentityToken = FBAccessToken;
awsSTRequest.providerId = @"graph.facebook.com";


AmazonSecurityTokenServiceClient *awsTSClient = [[AmazonSecurityTokenServiceClient alloc] init];
SecurityTokenServiceAssumeRoleWithWebIdentityResponse *response = [awsTSClient assumeRoleWithWebIdentity:awsSTRequest];


return response;
}

-(void)initializeAmazonDBClient {


   //Get security token for Facebook user
 SecurityTokenServiceAssumeRoleWithWebIdentityResponse *awsSTResponse = [appDelegate.facebookManager getAmazonSecurityTokenServiceWithAWSRoleResource:AWSDBROLERESOURCENAMEFACEBOOK];


  //initialize awsCredentials
    AmazonCredentials *awsCredentials = [[AmazonCredentials alloc] initWithAccessKey:awsSTResponse.credentials.accessKeyId withSecretKey:awsSTResponse.credentials.secretAccessKey withSecurityToken:awsSTResponse.credentials.sessionToken];


    //Initialize AmazonDynamoDBClient for sending requests to Amazon
    self.awsDBClient = [[AmazonDynamoDBClient alloc] initWithCredentials:awsCredentials];
    self.awsDBClient.endpoint = AMAZONDYNAMODBENDPOINT;


    //set up a DynamoDBDescribeTableRequest request
    DynamoDBDescribeTableRequest *request = [[DynamoDBDescribeTableRequest alloc] initWithTableName:@"my_table_name"];
request.delegate = self;




    DynamoDBDescribeTableResponse *response = [awsDBClient describeTable:request];


    NSString *status = response.table.tableStatus;

    NSLog(@"%@", status); //NULL 


}