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java outputs has null exception #118
Description
When I deploy java demo according this link https://github.com/OpenFunction/samples/tree/main/functions/knative/java/with-output-binding, after deploy, I access function, but has exception as:
[main] INFO org.eclipse.jetty.server.Server - jetty-11.0.9; built: 2022-03-30T17:44:47.085Z; git: 243a48a658a183130a8c8de353178d154ca04f04; jvm 18.0.1.1+2
[main] INFO org.eclipse.jetty.server.handler.ContextHandler - Started o.e.j.s.ServletContextHandler@6f5ffd5c{/,null,AVAILABLE}
[main] INFO org.eclipse.jetty.server.AbstractConnector - Started ServerConnector@5e792d1b{HTTP/1.1, (http/1.1)}{0.0.0.0:8080}
[main] INFO org.eclipse.jetty.server.Server - Started Server@ee6f42b2{STARTING}[11.0.9,sto=0] @397ms
plugin plugin-example:v1.0.0 exec pre hook for http function at 2023-03-08 11:01:55.Z
receive event: {"message":"Awesome OpenFunction!"}
Mar 08, 2023 11:01:55 AM dev.openfunction.invoker.runtime.SynchronizeRuntime$OpenFunctionServlet service
SEVERE: Failed to execute function
java.lang.NullPointerException: Cannot invoke "io.dapr.client.DaprClient.invokeBinding(java.lang.String, java.lang.String, byte[], java.util.Map)" because "this.daprClient" is null
at dev.openfunction.invoker.context.UserContext.send(UserContext.java:116)
at dev.openfunction.samples.OpenFunctionImpl.accept(OpenFunctionImpl.java:15)
at dev.openfunction.invoker.runtime.SynchronizeRuntime$OpenFunctionServlet.service(SynchronizeRuntime.java:166)
at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:587)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:764)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:508)
at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:221)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1375)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:176)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:463)
at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:174)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1297)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:129)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:122)
at org.eclipse.jetty.server.Server.handle(Server.java:562)
at org.eclipse.jetty.server.HttpChannel.lambda$handle$0(HttpChannel.java:505)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:762)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:497)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:282)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:319)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:100)
at org.eclipse.jetty.io.SelectableChannelEndPoint$1.run(SelectableChannelEndPoint.java:53)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:894)
at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1038)
at java.base/java.lang.Thread.run(Unknown Source)
From above, it may be not init dapr client for java sdk.
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benjaminhuo commentedon Mar 8, 2023
@wrongerror user need to add annotation manually? https://openfunction.dev/docs/concepts/baas_integration/
wanjunlei commentedon Mar 9, 2023
Add these annotations to the Function.
benjaminhuo commentedon Mar 9, 2023
All samples should work under both
proxyandsidecarmodes, why proxy mode doesn't work for java? @wanjunlei @wrongerrorgongxh13 commentedon Mar 9, 2023
I has try this and can work well. But another question is I has try go with-binding demo, it's can work well not need this annotation, demo link is https://github.com/OpenFunction/samples/tree/main/functions/knative/with-output-binding.
Can you explain this why?
For java, just sidecar mode is well, but go two mode are well, whether is because openfunction has not complete this for java?
benjaminhuo commentedon Mar 10, 2023
It's a bug, the proxy mode should work for Java as well. @wanjunlei has fix that.
@wanjunlei would you update all the readme, docs, samples to reflect the new java functions framework version?
benjaminhuo commentedon Mar 13, 2023
@wanjunlei has fixed this you can delete the old builder @gongxh13 https://github.com/OpenFunction/samples/blob/main/functions/knative/java/with-output-binding/function-front.yaml#L18 and download the new one.