Apollo federation with apollo router , hive and graphql kotlin not working

[Jasper-ui]

Hi guys, any ideas why this is not working?

https://community.apollographql.com/t/apollo-router-and-hive-federation/7243

The response from the MS is

dler.codec.http.HttpServerCodec), (reactor.left.httpTrafficHandler = reactor.netty.http.server.HttpTrafficHandler), (reactor.right.reactiveBridge = reactor.netty.channel.ChannelOperationsHandler)}
2024-02-28T13:07:36.468Z DEBUG 1 --- [or-http-epoll-4] o.s.http.codec.json.Jackson2JsonDecoder  : [592a4626-14] Decoded [GraphQLRequest(query=query($representations:[_Any!]!){_entities(representations:$representations){.. (truncated)...]
2024-02-28T13:07:36.468Z DEBUG 1 --- [or-http-epoll-4] r.netty.channel.ChannelOperations        : [592a4626-2, L:/127.0.0.1:8044 - R:/127.0.0.1:43900] [HttpServer] Channel inbound receiver cancelled (operation cancelled).
2024-02-28T13:07:36.469Z DEBUG 1 --- [or-http-epoll-4] notprivacysafe.graphql.GraphQL           : Executing request. operation name: 'null'. query: 'query($representations:[_Any!]!){_entities(representations:$representations){...on Property{apartments{primaryKey name}}}}'. variables '{representations=[{__typename=Property, primaryKey=8db0b295-e4c5-48c8-8dc6-84d79853f7f0}]}'
2024-02-28T13:07:36.469Z DEBUG 1 --- [or-http-epoll-4] notprivacysafe.graphql.GraphQL           : Parsing query: 'query($representations:[_Any!]!){_entities(representations:$representations){...on Property{apartments{primaryKey name}}}}'...
2024-02-28T13:07:36.470Z DEBUG 1 --- [or-http-epoll-4] notprivacysafe.graphql.GraphQL           : Validating query: 'query($representations:[_Any!]!){_entities(representations:$representations){...on Property{apartments{primaryKey name}}}}'
2024-02-28T13:07:36.471Z DEBUG 1 --- [or-http-epoll-4] notprivacysafe.graphql.GraphQL           : Executing '77b1a6b5-0bfc-4afe-b965-22975881abeb'. operation name: 'null'. query: 'query($representations:[_Any!]!){_entities(representations:$representations){...on Property{apartments{primaryKey name}}}}'. variables '{representations=[{__typename=Property, primaryKey=8db0b295-e4c5-48c8-8dc6-84d79853f7f0}]}'
2024-02-28T13:07:36.471Z DEBUG 1 --- [or-http-epoll-4] n.graphql.execution.Execution            : Executing '77b1a6b5-0bfc-4afe-b965-22975881abeb' query operation: 'QUERY' using 'graphql.execution.AsyncExecutionStrategy' execution strategy
2024-02-28T13:07:36.472Z DEBUG 1 --- [or-http-epoll-4] .i.d.DataLoaderDispatcherInstrumentation : Dispatching data loaders ([])
2024-02-28T13:07:36.472Z DEBUG 1 --- [or-http-epoll-4] graphql.execution.ExecutionStrategy      : '77b1a6b5-0bfc-4afe-b965-22975881abeb' completing field '/_entities'...
2024-02-28T13:07:36.472Z DEBUG 1 --- [or-http-epoll-4] .i.d.DataLoaderDispatcherInstrumentation : Dispatching data loaders ([])
2024-02-28T13:07:36.472Z DEBUG 1 --- [or-http-epoll-4] graphql.GraphQL                          : Execution '77b1a6b5-0bfc-4afe-b965-22975881abeb' completed with '1' errors
2024-02-28T13:07:36.473Z DEBUG 1 --- [or-http-epoll-4] .a.f.g.t.FederatedTracingInstrumentation : end_time {
  seconds: 1709125656
  nanos: 472568541
}
start_time {
  seconds: 1709125656
  nanos: 469218391
}
duration_ns: 3352770
root {
  child {
    response_name: "_entities"
    type: "[_Entity]!"
    start_time: 2651835
    end_time: 2875019
    error {
      message: "Unable to resolve federated type, representation={__typename=Property, primaryKey=8db0b295-e4c5-48c8-8dc6-84d79853f7f0}"
      location {
        line: 4294967295
        column: 4294967295
      }
    }
    parent_type: "Query"
  }
}

2024-02-28T13:07:36.474Z DEBUG 1 --- [or-http-epoll-4] o.s.http.codec.json.Jackson2JsonEncoder  : [592a4626-14] Encoding [GraphQLResponse(data={_entities=[null]}, errors=[GraphQLServerError(message=Unable to resolve federa (truncated)...]

gradle settings file

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile

plugins {
	id("org.springframework.boot") version "3.1.4"
	id("io.spring.dependency-management") version "1.1.3"
	id("com.expediagroup.graphql") version "7.0.2"
	kotlin("jvm") version "1.8.22"
	kotlin("plugin.spring") version "1.8.22"
}

group = "com.package"
version = "0.0.1-SNAPSHOT"

java {
	sourceCompatibility = JavaVersion.VERSION_19
}

repositories {
	mavenCentral()
	maven("https://jitpack.io")
	maven {
		url = uri("https://plugins.gradle.org/m2/")
	}
}

dependencies {
	implementation("org.springframework.boot:spring-boot-starter")
	implementation("org.springframework.boot:spring-boot-starter-actuator")
	implementation("org.jetbrains.kotlin:kotlin-reflect")
	implementation("software.amazon.awssdk:dynamodb:2.20.153")
	implementation("software.amazon.awssdk:auth:2.20.153")
	implementation ("com.github.oharaandrew314:dynamodb-kotlin-module:0.3.0")
	implementation ("io.github.oshai:kotlin-logging-jvm:5.1.0")
	implementation("com.expediagroup:graphql-kotlin-schema-generator:7.0.1")
	implementation("com.expediagroup:graphql-kotlin-federation:7.0.1")
	graphqlSDL("com.expediagroup", "graphql-kotlin-federated-hooks-provider")
	implementation("javax.validation:validation-api:2.0.0.Final")
	implementation("org.json:json:20230618")
	implementation("com.expediagroup:graphql-kotlin-spring-server:7.0.1")
	testImplementation("com.graphql-java-kickstart:graphql-spring-boot-starter-test:15.0.0")
	testImplementation("org.springframework.boot:spring-boot-starter-test")
	testImplementation ("io.kotest:kotest-runner-junit5:5.7.2")
	testImplementation ("io.kotest:kotest-assertions-core:5.7.2")
	testImplementation("org.http4k:http4k-connect-amazon-dynamodb-fake:5.2.0.0")
	testImplementation ("org.junit.jupiter:junit-jupiter-api:5.8.1")
	testRuntimeOnly ("org.junit.jupiter:junit-jupiter-engine:5.8.1")
}

tasks.named("build") {
	dependsOn("bootJar")
	dependsOn("graphqlGenerateSDL")
}

apply(plugin = "com.expediagroup.graphql")


tasks.withType<KotlinCompile> {
	kotlinOptions {
		freeCompilerArgs += "-Xjsr305=strict"
		jvmTarget = "19"
	}
}

tasks.withType<Test> {
	useJUnitPlatform()
}

application yaml file

graphql:
  schema:
    registry:
      enabled: ${GRAPHQL_SCHEMA_REGISTRY_ENABLED:true}
      url: ${GRAPHQL_SCHEMA_REGISTRY_URL}
      token: ${GRAPHQL_SCHEMA_REGISTRY_API_TOKEN}
      servlet: "/graphql"
      service:
        port: ${server.port}
        serverName: localhost
        name: "service-name"
        version: "1.0.0"
  maxPageSize: 32
  federation:
    optInV2: false
    enabled: true
  packages:
    - "com.package.property"
    ```
And property resolver on apartments

class PropertyResolver(
private val control: IApartmentGraphqlControl
) : FederatedTypeSuspendResolver<PropertyResolver.Property> {
override val typeName = "Property"
override suspend fun resolve(
environment: DataFetchingEnvironment,
representation: Map<String, Any>
): Property? =
representation["primaryKey"]?.toString()?.let { id -> Property(id, control) }

@KeyDirective(fields = FieldSet("primaryKey"))
@ExtendsDirective
data class Property(
    @ExternalDirective val primaryKey: String,
    private val control: IApartmentGraphqlControl
) {
    fun apartments(): List<GraphqlApartmentOutput> = control.findAllApartmentsForProperty(UUID.fromString(primaryKey))

}

}

[Jasper-ui]

Forgot to add @component to the resolver 🤦