GRPC Request sampler error

[debayandesarkar]

Hi,
I am trying to use this GRPC Request sampler for testing one of our service using gRPC. However, the Full method drop down in not showing any list of method names and when I clicked on the "Listing" button getting the below exception. Can you please help me troubleshoot this issue.

2021-04-21 21:35:08,628 WARN v.z.b.c.p.ProtocInvoker: Protoc invocation failed with status: 1
2021-04-21 21:35:08,628 WARN v.z.b.c.p.ProtocInvoker: [Protoc log] protoc-jar: protoc version: 3.10.1, detected platform: osx-x86_64 (mac os x/x86_64)
2021-04-21 21:35:08,628 WARN v.z.b.c.p.ProtocInvoker: [Protoc log] protoc-jar: embedded: bin/3.10.1/protoc-3.10.1-osx-x86_64.exe
2021-04-21 21:35:08,628 WARN v.z.b.c.p.ProtocInvoker: [Protoc log] protoc-jar: executing: [/var/folders/4v/ht8prz9n0wl7wv6dvjp2s968lf392v/T/protocjar3152238670745609599/bin/protoc.exe, /opt/GitHub/pay-integrator-api/src/main/proto/com/expedia/payment/integrator/service/v1/integrator_payment_api.proto, -I/opt/GitHub/pay-braintree-integrator-service/src/integrationTest/java/com/expedia/payment/integrator/braintree/test, -I/var/folders/4v/ht8prz9n0wl7wv6dvjp2s968lf392v/T/polyglot-well-known-types9330947055540584268, -I/opt/GitHub/pay-integrator-api/src/main/proto/com/expedia/payment/integrator/service/v1, --descriptor_set_out=/var/folders/4v/ht8prz9n0wl7wv6dvjp2s968lf392v/T/descriptor15896175824821102554.pb.bin, --include_imports]
2021-04-21 21:35:08,628 ERROR o.a.j.JMeter: Uncaught exception in thread Thread[AWT-EventQueue-0,6,main]
java.lang.RuntimeException: Unable to resolve service by invoking protoc
	at vn.zalopay.benchmark.core.ClientList.listServices(ClientList.java:20) ~[jmeter-grpc-request-1.1.2.jar:?]
	at vn.zalopay.benchmark.GRPCSamplerGui.getMethods(GRPCSamplerGui.java:274) ~[jmeter-grpc-request-1.1.2.jar:?]
	at vn.zalopay.benchmark.GRPCSamplerGui.access$100(GRPCSamplerGui.java:35) ~[jmeter-grpc-request-1.1.2.jar:?]
	at vn.zalopay.benchmark.GRPCSamplerGui$1.actionPerformed(GRPCSamplerGui.java:244) ~[jmeter-grpc-request-1.1.2.jar:?]
	at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1967) ~[?:?]
	at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2308) ~[?:?]
	at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:405) ~[?:?]
	at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262) ~[?:?]
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279) ~[?:?]
	at java.awt.Component.processMouseEvent(Component.java:6636) ~[?:?]
	at javax.swing.JComponent.processMouseEvent(JComponent.java:3342) ~[?:?]
	at java.awt.Component.processEvent(Component.java:6401) ~[?:?]
	at java.awt.Container.processEvent(Container.java:2263) ~[?:?]
	at java.awt.Component.dispatchEventImpl(Component.java:5012) ~[?:?]
	at java.awt.Container.dispatchEventImpl(Container.java:2321) ~[?:?]
	at java.awt.Component.dispatchEvent(Component.java:4844) ~[?:?]
	at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4919) ~[?:?]
	at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4548) ~[?:?]
	at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4489) ~[?:?]
	at java.awt.Container.dispatchEventImpl(Container.java:2307) ~[?:?]
	at java.awt.Window.dispatchEventImpl(Window.java:2764) ~[?:?]
	at java.awt.Component.dispatchEvent(Component.java:4844) ~[?:?]
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:772) ~[?:?]
	at java.awt.EventQueue$4.run(EventQueue.java:721) ~[?:?]
	at java.awt.EventQueue$4.run(EventQueue.java:715) ~[?:?]
	at java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?]
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:95) ~[?:?]
	at java.awt.EventQueue$5.run(EventQueue.java:745) ~[?:?]
	at java.awt.EventQueue$5.run(EventQueue.java:743) ~[?:?]
	at java.security.AccessController.doPrivileged(AccessController.java:391) ~[?:?]
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:85) ~[?:?]
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:742) ~[?:?]
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203) [?:?]
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124) [?:?]
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113) [?:?]
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109) [?:?]
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101) [?:?]
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:90) [?:?]
Caused by: vn.zalopay.benchmark.core.protobuf.ProtocInvoker$ProtocInvocationException: Got exit code [1] from protoc with args [[/opt/GitHub/pay-integrator-api/src/main/proto/com/expedia/payment/integrator/service/v1/integrator_payment_api.proto, -I/opt/GitHub/pay-braintree-integrator-service/src/integrationTest/java/com/expedia/payment/integrator/braintree/test, -I/var/folders/4v/ht8prz9n0wl7wv6dvjp2s968lf392v/T/polyglot-well-known-types9330947055540584268, -I/opt/GitHub/pay-integrator-api/src/main/proto/com/expedia/payment/integrator/service/v1, --descriptor_set_out=/var/folders/4v/ht8prz9n0wl7wv6dvjp2s968lf392v/T/descriptor15896175824821102554.pb.bin, --include_imports]]
	at vn.zalopay.benchmark.core.protobuf.ProtocInvoker.invokeBinary(ProtocInvoker.java:159) ~[jmeter-grpc-request-1.1.2.jar:?]
	at vn.zalopay.benchmark.core.protobuf.ProtocInvoker.invoke(ProtocInvoker.java:104) ~[jmeter-grpc-request-1.1.2.jar:?]
	at vn.zalopay.benchmark.core.ClientList.listServices(ClientList.java:18) ~[jmeter-grpc-request-1.1.2.jar:?]
	... 38 more
<img width="1439" alt="Screen Shot 2021-04-21 at 9 35 33 PM" src="https://user-images.githubusercontent.com/38543344/115656373-fe274c00-a2e9-11eb-8ea7-f50c6b11eebe.png">

Regards
Debayan De Sarkar