C#

Download S3 CloudTrail Log and Un-Gzip

See more Amazon S3 Examples

Demonstrates how to download a Amazon CloudTrail log from an S3 bucket. The file in this example is a .json.gz. The file is uncompressed and the JSON parsed. C#

bool success = false;

//  This requires the Chilkat API to have been previously unlocked.
//  See Global Unlock Sample for sample code.

Chilkat.Http http = new Chilkat.Http();

http.AwsAccessKey = "AWS_ACCESS_KEY";
http.AwsSecretKey = "AWS_SECRET_KEY";
http.AwsRegion = "us-west-2";
http.AwsEndpoint = "s3-us-west-2.amazonaws.com";

string bucketName = "chilkat.logs";
string objectName = "/AWSLogs/957491831129/CloudTrail/us-west-1/2016/11/12/957491831129_CloudTrail_us-west-1_20161112T1335Z_umXfD4RxHE5nDGuI.json.gz";
string localFilePath = "qa_output/cloudTrailLog.json.gz";

success = http.S3_DownloadFile(bucketName,objectName,localFilePath);
if (success != true) {
    Debug.WriteLine(http.LastErrorText);
    return;
}

int statusCode = http.LastStatus;
if (statusCode != 200) {
    Debug.WriteLine("Failed to download, response status code = " + Convert.ToString(statusCode));
    return;
}

string jsonPath = "qa_output/cloudTrailLog.json";
Chilkat.Gzip gzip = new Chilkat.Gzip();
success = gzip.UncompressFile(localFilePath,jsonPath);
if (success == false) {
    Debug.WriteLine(gzip.LastErrorText);
    return;
}

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.LoadFile(jsonPath);
json.EmitCompact = false;
Debug.WriteLine(json.Emit());

//  Sample JSON is shown below.
//  Go to http://tools.chilkat.io/jsonParse.cshtml 
//  and copy/paste the JSON into the online tool to generate parsing code.

//  {
//    "Records": [
//      {
//        "eventVersion": "1.05",
//        "userIdentity": {
//          "type": "Root",
//          "principalId": "954591834127",
//          "arn": "arn:aws:iam::954591834127:root",
//          "accountId": "954591834127",
//          "accessKeyId": "ASIAJ3DEMXUXI43B6FYQ",
//          "sessionContext": {
//            "attributes": {
//              "mfaAuthenticated": "false",
//              "creationDate": "2016-11-12T13:09:31Z"
//            }
//          }
//        },
//        "eventTime": "2016-11-12T13:34:39Z",
//        "eventSource": "cloudtrail.amazonaws.com",
//        "eventName": "DescribeTrails",
//        "awsRegion": "us-west-1",
//        "sourceIPAddress": "98.228.98.57",
//        "userAgent": "console.amazonaws.com",
//        "requestParameters": {
//          "trailNameList": [
//          ]
//        },
//        "responseElements": null,
//        "requestID": "c2a0376c-a8dc-11e6-89e7-85ac5ce5ee56",
//        "eventID": "eb5afd70-dae1-41f0-82b4-91c3c936d9ba",
//        "eventType": "AwsApiCall",
//        "recipientAccountId": "954591834127"
//      }
//    ]
//  }