[Hawkular-dev] agent running in EAP6.4 cannot talk to Hawkular Server over HTTPS

[John Mazzitelli]

Josejulio, cc hawkular-dev:

<TL;DR>
Due to incomplete API support in a EAP 6.4 library, we cannot support the agent installed as a subsystem extension inside EAP6 if the agent is to talk to the Hawkular Server over HTTPS.
</TL;DR>

I don't know how to workaround this one - maybe someone has a bright idea. But right now, it looks like we can't support an EAP6-based agent talking to Hawkular-Metrics over HTTPS *unless* the agent is running as a javaagent (a new feature not even in master yet, but I tried it and it works).

This is a EAP 6.4 method that OKHttp is calling when making an HTTP request requiring SSL - I'll give you the summary - its a one-line auto-generated stub method that "return null;" :)

https://github.com/wildfly/wildfly-core/blame/de6b17d4d342e98871c0e95f7e6faa9006383768/domain-management/src/main/java/org/jboss/as/domain/management/security/WrapperSSLContext.java#L124-L126

I stepped into this code via a debugger and the line number and behavior (returning null always) matches up with that code.

Needless to say, this causes a NullPointerException later on in the OKHttp library and thus cannot talk to the Hawkular Server over HTTPS.

Here's the stack trace that got me there:

Daemon Thread [Hawkular WildFly Agent Startup Thread] (Suspended)	
	org.jboss.as.domain.management.security.WrapperSSLContext$WrapperSpi$WrapperSSLSocketFactory.createSocket(java.net.Socket, java.lang.String, int, boolean) line: 126	
	okhttp3.internal.connection.RealConnection.connectTls(int, int, okhttp3.internal.connection.ConnectionSpecSelector) line: 230	
	okhttp3.internal.connection.RealConnection.establishProtocol(int, int, okhttp3.internal.connection.ConnectionSpecSelector) line: 198	
	okhttp3.internal.connection.RealConnection.buildConnection(int, int, int, okhttp3.internal.connection.ConnectionSpecSelector) line: 174	
	okhttp3.internal.connection.RealConnection.connect(int, int, int, java.util.List<okhttp3.ConnectionSpec>, boolean) line: 114	
	okhttp3.internal.connection.StreamAllocation.findConnection(int, int, int, boolean) line: 193	
	okhttp3.internal.connection.StreamAllocation.findHealthyConnection(int, int, int, boolean, boolean) line: 129	
	okhttp3.internal.connection.StreamAllocation.newStream(okhttp3.OkHttpClient, boolean) line: 98	
	okhttp3.internal.connection.ConnectInterceptor.intercept(okhttp3.Interceptor$Chain) line: 42	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request, okhttp3.internal.connection.StreamAllocation, okhttp3.internal.http.HttpStream, okhttp3.Connection) line: 92	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request) line: 67	
	okhttp3.internal.cache.CacheInterceptor.intercept(okhttp3.Interceptor$Chain) line: 109	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request, okhttp3.internal.connection.StreamAllocation, okhttp3.internal.http.HttpStream, okhttp3.Connection) line: 92	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request) line: 67	
	okhttp3.internal.http.BridgeInterceptor.intercept(okhttp3.Interceptor$Chain) line: 93	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request, okhttp3.internal.connection.StreamAllocation, okhttp3.internal.http.HttpStream, okhttp3.Connection) line: 92	
	okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(okhttp3.Interceptor$Chain) line: 124	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request, okhttp3.internal.connection.StreamAllocation, okhttp3.internal.http.HttpStream, okhttp3.Connection) line: 92	
	okhttp3.internal.http.RealInterceptorChain.proceed(okhttp3.Request) line: 67	
	okhttp3.RealCall.getResponseWithInterceptorChain() line: 170	
	okhttp3.RealCall.execute() line: 60	
	org.hawkular.agent.monitor.service.MonitorService(org.hawkular.agent.monitor.service.AgentCoreEngine).waitForHawkularServer() line: 648	
	org.hawkular.agent.monitor.service.MonitorService(org.hawkular.agent.monitor.service.AgentCoreEngine).startHawkularAgent(org.hawkular.agent.monitor.config.AgentCoreEngineConfiguration) line: 279	
	org.hawkular.agent.monitor.service.MonitorService(org.hawkular.agent.monitor.service.AgentCoreEngine).startHawkularAgent() line: 164	
	org.hawkular.agent.monitor.service.MonitorService$1CustomPropertyChangeListener$1.run() line: 395	
	java.lang.Thread.run() line: 745