how to log to graylog from google appengine

Question

I have an application running on google appengine. I am trying to log to greylog2 from appengin(I do not want to use the app engine cloud logging but greylog)

here is the dependency on my pom:

      <dependency>
         <groupId>org.graylog2</groupId>
         <artifactId>gelfj</artifactId>
         <version>1.1.15</version>
      </dependency>

and here is my code:

    GelfMessage message = new GelfMessage("myMessage", "myMessage", new Date().getTime(), "1");
    message.setHost("appspot");
    message.setVersion("1.3");
    message.setFacility("F");
    GelfUDPSender gelfUDPSender;
    gelfUDPSender = new GelfUDPSender("my-ip-address", 12202);
    GelfSenderResult result = gelfUDPSender.sendMessage(message);

when I run this locally it works. But when I run this on appengine I see the following message:

Error for /worker
java.lang.NoClassDefFoundError: java.nio.channels.DatagramChannel is a restricted class. 
Please see the Google App Engine developer's guide for more details.
        at com.google.apphosting.runtime.security.shared.stub.java.nio.channels.DatagramChannel.<clinit>(DatagramChannel.java)
        at org.graylog2.GelfUDPSender.initiateChannel(GelfUDPSender.java:31)
        at org.graylog2.GelfUDPSender.<init>(GelfUDPSender.java:27)

EDIT: graylog works with firewall. I need to open a route for the appengine instance IP. does it have an IP?

is there any way to get the ip?

score 0 · Accepted Answer · answered Dec 01 '16 at 12:02

1) could not use the org.graylog2 jar since it isn't in the The JRE Class White List sould be using java.net.URLConnection instead. see the docs

2) accourding to the docs :

App Engine does not currently provide a way to map static IP addresses to an application

how to log to graylog from google appengine

1 Answers1