Getting Data In

How to resolve error "java.lang.IllegalArgumentException: URI can't be null" when testing HTTP Event Collector from a Java client?

SGADE
Engager

I am trying to test the HTTP Event Collector from a java client, referred the Java project from splunk.com. Please help to resolve the issue.
We use cookie for the authorization . Thanks SG

        serviceArgs.setHost("https://test2751.md4.abc.com");
        serviceArgs.setCookie("credential=cookie value");
        serviceArgs.setPort(8088);
        serviceArgs.setScheme("https");
        serviceArgs.setToken("0B999603-81C7-4930-abcd-639825CE66E6");
        serviceArgs.setSSLSecurityProtocol(SSLSecurityProtocol.TLSv1_2); // TLSv1 didn't work.

      service = Service.connect(serviceArgs);
      service.login();

Below is the exception trace:

java.lang.IllegalArgumentException: URI can't be null.
    at sun.net.spi.DefaultProxySelector.select(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
    at com.splunk.HttpService.send(HttpService.java:403)
    at com.splunk.Service.send(Service.java:1293)
    at com.splunk.HttpService.post(HttpService.java:308)
    at com.abc.splunk.logging.test.TestUtil.enableHttpEventCollector(TestUtil.java:197)
    at com.abc.splunk.logging.test.HttpEventCollector_Log4j2Test.canSendEventUsingLog4j2(HttpEventCollector_Log4j2Test.java:40)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

jantona
Engager

I was able to work-around these issues by effectively embedding the REST API with CURL into Java like this:

public String curlConnect() throws Exception {
        String r = null;
        try {
            List<String> theCommand = new ArrayList<String>();
            theCommand.add("curl");
            theCommand.add("-sk");
            theCommand.add(this.surl + "/services/auth/login?output_mode=json");
            logger.debug(this.surl+ "/services/auth/login?output_mode=json");
            logger.debug("-d username=" + this.user + " password=XXXXXX");
            theCommand.add("-d");
            theCommand.add("username=" + this.user);
            theCommand.add("-d");
            theCommand.add("password=" + this.token);

            ProcessBuilder pb = new ProcessBuilder(theCommand);

            pb.directory(new File(System.getProperty("input.file.path")));
            pb.redirectErrorStream(true);
            Process p = pb.start();
            InputStream is = p.getInputStream();

            r = IOUtils.toString(is);
            r = r.substring(r.indexOf("{\"sessionKey\":\""), r.length());
            JSONObject jsonResponse = new JSONObject(r);
            this.sessionKey = jsonResponse.getString("sessionKey");
            r = this.sessionKey;
            logger.debug(r);

        } catch ( Exception e ) {
            logger.error(this.surl);
            logger.error(e.getMessage());
            throw e;
        }
        return r;
    }

    public String query(String splunkQuery) throws Exception {
        String r = null;
        try {
            List<String> theCommand = new ArrayList<String>();
            theCommand.add("curl");
            theCommand.add("-sku");
            theCommand.add(this.user+":"+this.token);
            //theCommand.add("-H");
            //theCommand.add("\"Authorization: Splunk " + this.sessionKey + "\"");
            theCommand.add(this.surl + "/services/search/jobs?output_mode=json");
            logger.debug(this.surl+ "/services/search/jobs?output_mode=json");
            theCommand.add("-d");
            theCommand.add("search=" + URLEncoder.encode(splunkQuery, "UTF-8"));
            logger.info("search=" + URLEncoder.encode(splunkQuery, "UTF-8"));
            //theCommand.add("-d");
            //theCommand.add("output_mode=json");

            ProcessBuilder pb = new ProcessBuilder(theCommand);

            pb.directory(new File(System.getProperty("input.file.path")));
            pb.redirectErrorStream(true);
            Process p = pb.start();
            InputStream is = p.getInputStream();

            String theResult = IOUtils.toString(is);
            logger.info(theResult);

            theResult = theResult.substring(theResult.indexOf("{\"sid\":\""), theResult.length());
            JSONObject jsonResponse = new JSONObject(theResult);
            r = jsonResponse.getString("sid");

            while ( !resultsReady(r)) {
                logger.info("waiting 30 seconds for async report to finish running sid " + r);
                java.util.concurrent.TimeUnit.SECONDS.sleep(30);
            }
        } catch ( Exception e) {
            logger.error(this.surl);
            logger.error(e.getMessage());
            throw e;
        }
        return r;
    }
0 Karma

ordiel
Engager

Bit ridiculous that following the provided example does not work isn't it?

0 Karma

marcellodesales
Path Finder

FU**#$(@#)#(@)(# The WORST API EVER

0 Karma

jantona
Engager

Did you resolve this? I am having the same problem...

0 Karma
Get Updates on the Splunk Community!

How to Monitor Google Kubernetes Engine (GKE)

We’ve looked at how to integrate Kubernetes environments with Splunk Observability Cloud, but what about ...

Index This | How can you make 45 using only 4?

October 2024 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with this ...

Splunk Education Goes to Washington | Splunk GovSummit 2024

If you’re in the Washington, D.C. area, this is your opportunity to take your career and Splunk skills to the ...