Chilkat Online Tools

DescribeChannel Android Example

AWS IoT Analytics

// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

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

    CkRest rest = new CkRest();
    boolean success;

    CkAuthAws authAws = new CkAuthAws();
    authAws.put_AccessKey("AWS_ACCESS_KEY");
    authAws.put_SecretKey("AWS_SECRET_KEY");

    // Don't forget to change the region to your particular region. (Also make the same change in the call to Connect below.)
    authAws.put_Region("us-west-2");
    authAws.put_ServiceName("iotanalytics");
    // SetAuthAws causes Chilkat to automatically add the following headers: Authorization, X-Amz-Date
    rest.SetAuthAws(authAws);

    // URL: https://iotanalytics.us-west-2.amazonaws.com/
    // Use the same region as specified above.
    success = rest.Connect("iotanalytics.us-west-2.amazonaws.com",443,true,true);
    if (success != true) {
        Log.i(TAG, "ConnectFailReason: " + String.valueOf(rest.get_ConnectFailReason()));
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    rest.AddHeader("Content-Type","application/x-amz-json-1.1");
    rest.AddHeader("X-Amz-Target","DescribeChannel");

    CkStringBuilder sbResponseBody = new CkStringBuilder();
    success = rest.FullRequestNoBodySb("GET","/channels/{channelName}",sbResponseBody);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    int respStatusCode = rest.get_ResponseStatusCode();
    Log.i(TAG, "response status code = " + String.valueOf(respStatusCode));
    if (respStatusCode != 200) {
        Log.i(TAG, "Response Header:");
        Log.i(TAG, rest.responseHeader());
        Log.i(TAG, "Response Body:");
        Log.i(TAG, sbResponseBody.getAsString());
        return;
        }

    CkJsonObject jResp = new CkJsonObject();
    jResp.LoadSb(sbResponseBody);

    // The following code parses the JSON response.
    // A sample JSON response is shown below the sample code.

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

    String Arn = jResp.stringOf("channel.arn");
    int CreationTime = jResp.IntOf("channel.creationTime");
    int LastMessageArrivalTime = jResp.IntOf("channel.lastMessageArrivalTime");
    int LastUpdateTime = jResp.IntOf("channel.lastUpdateTime");
    String Name = jResp.stringOf("channel.name");
    int NumberOfDays = jResp.IntOf("channel.retentionPeriod.numberOfDays");
    int Unlimited = jResp.IntOf("channel.retentionPeriod.unlimited");
    String Status = jResp.stringOf("channel.status");
    String Bucket = jResp.stringOf("channel.storage.customerManagedS3.bucket");
    String KeyPrefix = jResp.stringOf("channel.storage.customerManagedS3.keyPrefix");
    String RoleArn = jResp.stringOf("channel.storage.customerManagedS3.roleArn");
    int EstimatedOn = jResp.IntOf("statistics.size.estimatedOn");
    int EstimatedSizeInBytes = jResp.IntOf("statistics.size.estimatedSizeInBytes");

    // A sample JSON response body parsed by the above code:

    // {
    //   "channel": {
    //     "arn": "string",
    //     "creationTime": number,
    //     "lastMessageArrivalTime": number,
    //     "lastUpdateTime": number,
    //     "name": "string",
    //     "retentionPeriod": {
    //       "numberOfDays": number,
    //       "unlimited": boolean
    //     },
    //     "status": "string",
    //     "storage": {
    //       "customerManagedS3": {
    //         "bucket": "string",
    //         "keyPrefix": "string",
    //         "roleArn": "string"
    //       },
    //       "serviceManagedS3": {}
    //     }
    //   },
    //   "statistics": {
    //     "size": {
    //       "estimatedOn": number,
    //       "estimatedSizeInBytes": number
    //     }
    //   }
    // }

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}