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Posted to issues@nifi.apache.org by "Nathan Gough (JIRA)" <ji...@apache.org> on 2018/07/12 20:51:00 UTC
[jira] [Issue Comment Deleted] (NIFI-4194) NullPointerException in
InvokeHTTP processor when trusted hostname property is used
[ https://issues.apache.org/jira/browse/NIFI-4194?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Nathan Gough updated NIFI-4194:
-------------------------------
Comment: was deleted
(was: [~tony0918]
Hi Tony,
This issue was fixed by an upgrade to OkHttp version from 2.7.1 in NiFi v1.3.0, to 3.8.1 in NiFi v1.4.0. This changed the way the HostnameVerifier is used by the InvokeHTTP processor. I have verified this by building NiFi v1.3.0 and experienced this exception:
!Screen Shot 2018-07-12 at 3.29.50 PM.png!)
> NullPointerException in InvokeHTTP processor when trusted hostname property is used
> -----------------------------------------------------------------------------------
>
> Key: NIFI-4194
> URL: https://issues.apache.org/jira/browse/NIFI-4194
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.3.0
> Reporter: Andy LoPresto
> Assignee: Nathan Gough
> Priority: Major
> Labels: hostname, okhttp, security, tls
> Attachments: Screen Shot 2018-07-12 at 3.29.50 PM.png, flow_20170717-192339_trusted_hostname.xml
>
>
> When a user configures the {{InvokeHTTP}} processor with HTTPS (using an {{SSLContextService}}) and populates the {{trustedHostname}} property, the processor will throw a {{NullPointerException}} because the OkHttp client does not have a valid {{HostnameVerifier}} configured when the {{@OnScheduled}} method is called and that verifier is delegated to the processor. This results in the stacktrace below:
> {code}
> 2017-07-17 19:15:49,341 ERROR [Timer-Driven Process Thread-6] o.a.nifi.processors.standard.InvokeHTTP InvokeHTTP[id=53784003-015d-1000-ffb0-e07173729c9c] Routing to Failure due to exception: java.lang.NullPointerException: java.lang.NullPointerException
> java.lang.NullPointerException: null
> at org.apache.nifi.processors.standard.InvokeHTTP$OverrideHostnameVerifier.verify(InvokeHTTP.java:1050)
> at com.squareup.okhttp.internal.io.RealConnection.connectTls(RealConnection.java:192)
> at com.squareup.okhttp.internal.io.RealConnection.connectSocket(RealConnection.java:145)
> at com.squareup.okhttp.internal.io.RealConnection.connect(RealConnection.java:108)
> at com.squareup.okhttp.internal.http.StreamAllocation.findConnection(StreamAllocation.java:184)
> at com.squareup.okhttp.internal.http.StreamAllocation.findHealthyConnection(StreamAllocation.java:126)
> at com.squareup.okhttp.internal.http.StreamAllocation.newStream(StreamAllocation.java:95)
> at com.squareup.okhttp.internal.http.HttpEngine.connect(HttpEngine.java:283)
> at com.squareup.okhttp.internal.http.HttpEngine.sendRequest(HttpEngine.java:224)
> at com.squareup.okhttp.Call.getResponse(Call.java:286)
> at com.squareup.okhttp.Call$ApplicationInterceptorChain.proceed(Call.java:243)
> at com.squareup.okhttp.Call.getResponseWithInterceptorChain(Call.java:205)
> at com.squareup.okhttp.Call.execute(Call.java:80)
> at org.apache.nifi.processors.standard.InvokeHTTP.onTrigger(InvokeHTTP.java:630)
> at org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
> at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1120)
> at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
> at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
> at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
> at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> When that method is invoked, the existence of the {{HostnameVerifier}} should be checked before it is provided to the {{OverrideHostnameVerifier}}, and a default value of {{OkHostnameVerifier.INSTANCE}} (public static singleton) should be provided if none is available.
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