Example is not working

[haiminh87]

I cloned master and follow the instruction here https://rejoiner.io/docs/examples.html
But got this error

{
  "errors": [
    {
      "message": "Exception while fetching data (/sayHello) : java.lang.IllegalArgumentException: argument type mismatch",
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "sayHello"
      ]
    }
  ],
  "data": {
    "sayHello": null
  }
}

[siderakis]

I’ve seen something similar before, can you rerun the installDist command then relaunch the two processes.

[siderakis]

I just tested from a clean install and it seems to be working.

[timburks]

I'm also experiencing this with fresh builds on two platforms (MacOS and Ubuntu). My Java versions are 1.8.0_151 (MacOS) and 1.8.0_222 (Ubuntu).

[jhaals]

I'm currently running into the same issue when ./gradlew openIdea, starting both servers for helloworld and executing the graphql query

[WillemHoman]

yup, me too on jdk1.8.0_152, 9+181 osx all examples

[DianaSuvorova]

Same here. java version "1.8.0_152" macOS 10.14.6 with gradle example

[DianaSuvorova]

Some more details on the issue. The error happens on this line

return method.invoke(module, methodParameterValues);

if I try to call the sayHello method directly

((HelloWorldSchemaModule) module).sayHello(methodParameterValues[0], methodParameterValues[1])

I get

Type mismatch Can't assign com.google.inject.spi.ProviderLookup$1 to io.grpc.examples.helloworld.GreeterGrpc$GreeterBlockingStub

Any help would be appreciated.

[siderakis]

I switched the version of rejoiner in the gradle examples to 0.4.0-SNAPSHOT which seems to have fixed the issue.

[siderakis]

In general these examples need to be updated. I'd like to move them to use maven like the rest of the code.

[DianaSuvorova]

@siderakis thanks a bunch. This fixed the issue. The example is working for me now.