Add graphql service example

.editorconfig

@@ -0,0 +1,2 @@
+[*.{kt,kts}]
+ktlint_standard_no-wildcard-imports = disabled

.gitignore

@@ -1,6 +1,8 @@
 # Ignore Gradle project-specific cache directory
 .gradle
+.fleet
 
 # Ignore Gradle build output directory
 build
 
+.idea/

base/gradle.lockfile

@@ -2,42 +2,43 @@
 # Manual edits can break the build and are not advised.
 # This file is expected to be part of source control.
 aopalliance:aopalliance:1.0=compileClasspath,runtimeClasspath
-ch.qos.logback:logback-classic:1.2.3=compileClasspath,runtimeClasspath
-ch.qos.logback:logback-core:1.2.3=compileClasspath,runtimeClasspath
-com.fasterxml.jackson.core:jackson-annotations:2.14.2=compileClasspath,runtimeClasspath
-com.fasterxml.jackson.core:jackson-core:2.14.2=compileClasspath,runtimeClasspath
-com.fasterxml.jackson.core:jackson-databind:2.14.2=compileClasspath,runtimeClasspath
-com.fasterxml.jackson:jackson-bom:2.14.2=compileClasspath,runtimeClasspath
+ch.qos.logback:logback-classic:1.4.11=compileClasspath,runtimeClasspath
+ch.qos.logback:logback-core:1.4.11=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-annotations:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-core:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-databind:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson:jackson-bom:2.15.2=compileClasspath,runtimeClasspath
 com.google.code.findbugs:jsr305:3.0.2=compileClasspath,runtimeClasspath
-com.google.code.gson:gson:2.8.6=compileClasspath,runtimeClasspath
-com.google.errorprone:error_prone_annotations:2.3.4=compileClasspath,runtimeClasspath
+com.google.code.gson:gson:2.10=compileClasspath,runtimeClasspath
+com.google.errorprone:error_prone_annotations:2.7.1=compileClasspath,runtimeClasspath
 com.google.guava:failureaccess:1.0.1=compileClasspath,runtimeClasspath
-com.google.guava:guava:30.1-jre=compileClasspath,runtimeClasspath
+com.google.guava:guava:31.0.1-jre=compileClasspath,runtimeClasspath
 com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava=compileClasspath,runtimeClasspath
-com.google.inject:guice:5.1.0=compileClasspath,runtimeClasspath
+com.google.inject:guice:7.0.0=compileClasspath,runtimeClasspath
 com.google.j2objc:j2objc-annotations:1.3=compileClasspath,runtimeClasspath
-com.konghq:unirest-java:3.11.09=compileClasspath,runtimeClasspath
-commons-codec:commons-codec:1.11=compileClasspath,runtimeClasspath
+com.konghq:unirest-java:3.14.5=compileClasspath,runtimeClasspath
+commons-codec:commons-codec:1.15=compileClasspath,runtimeClasspath
 commons-logging:commons-logging:1.2=compileClasspath,runtimeClasspath
-dev.misfitlabs.kotlinguice4:kotlin-guice:1.6.0=compileClasspath,runtimeClasspath
-info.offthecob.platform:bom:1.0.11=compileClasspath,runtimeClasspath
-info.offthecob.platform:common:1.0.11=compileClasspath,runtimeClasspath
-io.github.microutils:kotlin-logging:1.7.6=compileClasspath,runtimeClasspath
-javax.inject:javax.inject:1=compileClasspath,runtimeClasspath
-net.logstash.logback:logstash-logback-encoder:7.3=compileClasspath,runtimeClasspath
-org.apache.httpcomponents:httpasyncclient:4.1.4=compileClasspath,runtimeClasspath
+dev.misfitlabs.kotlinguice4:kotlin-guice:3.0.0=compileClasspath,runtimeClasspath
+info.offthecob.platform:bom:1.0.15=compileClasspath,runtimeClasspath
+info.offthecob.platform:common:1.0.15=compileClasspath,runtimeClasspath
+io.github.microutils:kotlin-logging-jvm:3.0.5=compileClasspath,runtimeClasspath
+io.github.microutils:kotlin-logging:3.0.5=compileClasspath,runtimeClasspath
+jakarta.inject:jakarta.inject-api:2.0.1=compileClasspath,runtimeClasspath
+net.logstash.logback:logstash-logback-encoder:7.4=compileClasspath,runtimeClasspath
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 org.apache.httpcomponents:httpcore-nio:4.4.13=compileClasspath,runtimeClasspath
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 org.apache.httpcomponents:httpmime:4.5.13=compileClasspath,runtimeClasspath
-org.checkerframework:checker-qual:3.5.0=compileClasspath,runtimeClasspath
+org.checkerframework:checker-qual:3.12.0=compileClasspath,runtimeClasspath
 org.jetbrains.kotlin:kotlin-reflect:1.4.32=compileClasspath,runtimeClasspath
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-org.jetbrains.kotlin:kotlin-stdlib:1.9.0=compileClasspath,runtimeClasspath
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+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.10=compileClasspath,runtimeClasspath
+org.jetbrains.kotlin:kotlin-stdlib:1.9.10=compileClasspath,runtimeClasspath
 org.jetbrains:annotations:13.0=compileClasspath,runtimeClasspath
-org.slf4j:jcl-over-slf4j:1.7.25=compileClasspath,runtimeClasspath
-org.slf4j:jul-to-slf4j:1.7.25=compileClasspath,runtimeClasspath
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+org.slf4j:slf4j-api:2.0.9=compileClasspath,runtimeClasspath
 empty=annotationProcessor

base/src/main/kotlin/BaseModule.kt

@@ -1,13 +1,13 @@
+import com.google.inject.AbstractModule
 import com.google.inject.Provides
 import com.google.inject.Singleton
 import com.google.inject.name.Named
-import dev.misfitlabs.kotlinguice4.KotlinModule
 
 const val WORD_URL = "word-url"
 const val MIT_ECPRICE_WORD_LIST = "https://www.mit.edu/~ecprice/wordlist.10000"
 const val NUMBER_OF_WORDS = "number-of-words"
 
-class BaseModule : KotlinModule() {
+class BaseModule : AbstractModule() {
     @Provides
     @Singleton
     @Named(WORD_URL)

library/gradle.lockfile

@@ -0,0 +1,19 @@
+# This is a Gradle generated file for dependency locking.
+# Manual edits can break the build and are not advised.
+# This file is expected to be part of source control.
+com.fasterxml.jackson.core:jackson-annotations:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson:jackson-bom:2.15.2=compileClasspath,runtimeClasspath
+com.graphql-java:graphql-java:19.2=compileClasspath,runtimeClasspath
+com.graphql-java:java-dataloader:3.2.0=compileClasspath,runtimeClasspath
+com.netflix.graphql.dgs:graphql-dgs-platform-dependencies:5.5.1=compileClasspath,runtimeClasspath
+com.netflix.graphql.dgs:graphql-dgs-platform:5.5.1=compileClasspath,runtimeClasspath
+org.jetbrains.kotlin:kotlin-reflect:1.9.0=runtimeClasspath
+org.jetbrains.kotlin:kotlin-stdlib-common:1.9.10=compileClasspath,runtimeClasspath
+org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.9.10=compileClasspath,runtimeClasspath
+org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.10=compileClasspath,runtimeClasspath
+org.jetbrains.kotlin:kotlin-stdlib:1.9.10=compileClasspath,runtimeClasspath
+org.jetbrains:annotations:13.0=compileClasspath,runtimeClasspath
+org.reactivestreams:reactive-streams:1.0.3=compileClasspath,runtimeClasspath
+org.slf4j:slf4j-api:1.7.30=compileClasspath
+org.slf4j:slf4j-api:1.7.35=runtimeClasspath
+empty=annotationProcessor

library/library.gradle.kts

@@ -0,0 +1,22 @@
+import com.netflix.graphql.dgs.codegen.gradle.GenerateJavaTask
+
+plugins {
+    id("info.offthecob.Library")
+    id("com.netflix.dgs.codegen") version "6.0.2"
+}
+
+dependencies {
+    api("com.fasterxml.jackson.core:jackson-annotations:2.15.2")
+}
+
+tasks {
+    generateJava {
+        schemaPaths = mutableListOf("$projectDir/src/main/resources")
+        packageName = "info.offthecob.examples.library"
+        generateClient = false
+        language = "kotlin"
+    }
+    build {
+        dependsOn("generateJava")
+    }
+}

library/src/main/resources/schema.graphql

@@ -0,0 +1,13 @@
+type Word {
+    characters: String
+    weight: Int
+    color: String
+}
+
+input WordsInput {
+    numberOfWords: Int
+}
+
+type Query {
+    words(input: WordsInput!): [Word]
+}

service/gradle.lockfile

@@ -0,0 +1,68 @@
+# This is a Gradle generated file for dependency locking.
+# Manual edits can break the build and are not advised.
+# This file is expected to be part of source control.
+aopalliance:aopalliance:1.0=compileClasspath,runtimeClasspath
+ch.qos.logback:logback-classic:1.4.11=compileClasspath,runtimeClasspath
+ch.qos.logback:logback-core:1.4.11=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-annotations:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-core:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson.core:jackson-databind:2.15.2=compileClasspath,runtimeClasspath
+com.fasterxml.jackson:jackson-bom:2.15.2=compileClasspath,runtimeClasspath
+com.google.code.findbugs:jsr305:3.0.2=compileClasspath,runtimeClasspath
+com.google.code.gson:gson:2.10.1=compileClasspath,runtimeClasspath
+com.google.errorprone:error_prone_annotations:2.7.1=compileClasspath,runtimeClasspath
+com.google.guava:failureaccess:1.0.1=compileClasspath,runtimeClasspath
+com.google.guava:guava:31.0.1-jre=compileClasspath,runtimeClasspath
+com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava=compileClasspath,runtimeClasspath
+com.google.inject:guice:7.0.0=compileClasspath,runtimeClasspath
+com.google.j2objc:j2objc-annotations:1.3=compileClasspath,runtimeClasspath
+com.graphql-java:graphql-java:19.2=compileClasspath,runtimeClasspath
+com.graphql-java:java-dataloader:3.2.0=compileClasspath,runtimeClasspath
+com.netflix.graphql.dgs.codegen:graphql-dgs-codegen-shared-core:6.0.2=runtimeClasspath
+com.netflix.graphql.dgs:graphql-dgs-platform-dependencies:5.5.1=runtimeClasspath
+com.netflix.graphql.dgs:graphql-dgs-platform:5.5.1=runtimeClasspath
+commons-io:commons-io:2.13.0=compileClasspath,runtimeClasspath
+dev.misfitlabs.kotlinguice4:kotlin-guice:3.0.0=compileClasspath,runtimeClasspath
+info.offthecob.platform:bom:1.0.15=compileClasspath,runtimeClasspath
+info.offthecob.platform:common:1.0.15=compileClasspath,runtimeClasspath
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+io.github.microutils:kotlin-logging:3.0.5=compileClasspath,runtimeClasspath
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+org.ow2.asm:asm-commons:9.5=compileClasspath,runtimeClasspath
+org.ow2.asm:asm-tree:9.5=compileClasspath,runtimeClasspath
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+org.reactivestreams:reactive-streams:1.0.3=compileClasspath,runtimeClasspath
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+org.slf4j:slf4j-api:2.0.9=compileClasspath,runtimeClasspath
+empty=annotationProcessor

service/service.gradle.kts

@@ -0,0 +1,18 @@
+plugins {
+    id("info.offthecob.Service")
+}
+
+dependencies {
+    implementation(project(":library"))
+    implementation(platform(libs.offthecob.platform))
+    implementation("info.offthecob.platform:common")
+    implementation(libs.bundles.guice)
+    implementation(libs.bundles.logging)
+    implementation(libs.javalin)
+    implementation(libs.gson)
+    implementation(libs.graphql)
+    implementation(libs.commons.io)
+
+    testImplementation(libs.bundles.groovy)
+    testImplementation(libs.bundles.spock)
+}

service/src/main/kotlin/DataFetchers.kt

@@ -0,0 +1,11 @@
+import graphql.schema.DataFetcher
+import info.offthecob.examples.library.types.Word
+
+class DataFetchers {
+    fun getWords(): DataFetcher<List<Word>> {
+        return DataFetcher<List<Word>> { input ->
+            input.variables["numberOfWords"]
+            listOf(Word("dude", 1, "FFFFFF"))
+        }
+    }
+}

service/src/main/kotlin/GraphQLHandler.kt

@@ -0,0 +1,65 @@
+import com.google.gson.Gson
+import com.google.inject.Inject
+import graphql.ExecutionInput
+import graphql.ExecutionResult
+import graphql.GraphQL
+import io.javalin.http.Context
+import io.javalin.http.Handler
+
+data class GraphqlRequest(
+    val query: String,
+    val variables: Map<String, Any>?,
+    val operationName: String?,
+)
+
+class GraphQLHandler @Inject constructor(
+    private val graphql: GraphQL,
+    private val gson: Gson,
+) : Handler {
+    override fun handle(ctx: Context) {
+        if (ctx.body().isEmpty()) {
+            ctx.status(400)
+            ctx.result("Bad Request")
+        } else {
+            handleGraphqlRequest(ctx)
+        }
+    }
+
+    private fun handleGraphqlRequest(ctx: Context) {
+        val graphqlRequest = gson.fromJson(ctx.body(), GraphqlRequest::class.java)
+        val executionInput = executionInput(graphqlRequest, ctx)
+        val executionResult = graphql.execute(executionInput)
+        handleGraphqlExecutionResult(executionResult, ctx)
+    }
+
+    private fun handleGraphqlExecutionResult(executionResult: ExecutionResult, ctx: Context) {
+        if (executionResult.isDataPresent) {
+            ctx.result(gson.toJson(executionResult.toSpecification()))
+            ctx.status(200)
+        } else {
+            ctx.result("Bad Request")
+            ctx.status(400)
+        }
+    }
+
+    private fun executionInput(graphqlRequest: GraphqlRequest, ctx: Context): ExecutionInput {
+        val executionInputBuilder = ExecutionInput
+            .newExecutionInput(graphqlRequest.query)
+            .context(ctx)
+        variables(graphqlRequest, executionInputBuilder)
+        operationName(graphqlRequest, executionInputBuilder)
+        return executionInputBuilder.build()
+    }
+
+    private fun operationName(graphqlRequest: GraphqlRequest, executionInputBuilder: ExecutionInput.Builder) {
+        if (graphqlRequest.operationName?.isNotEmpty() == true) {
+            executionInputBuilder.operationName(graphqlRequest.operationName)
+        }
+    }
+
+    private fun variables(graphqlRequest: GraphqlRequest, executionInputBuilder: ExecutionInput.Builder) {
+        if (graphqlRequest.variables?.isNotEmpty() == true) {
+            executionInputBuilder.variables(graphqlRequest.variables)
+        }
+    }
+}

service/src/main/kotlin/ServiceMain.kt

@@ -0,0 +1,24 @@
+import com.google.inject.Guice
+import com.google.inject.Inject
+import dev.misfitlabs.kotlinguice4.getInstance
+import io.javalin.Javalin
+
+fun main() {
+    Guice
+        .createInjector(ServiceModule())
+        .getInstance<ServiceMain>()
+        .apply {
+            go()
+        }
+}
+
+class ServiceMain @Inject constructor(
+    private val javalin: Javalin,
+    private val graphQLHandler: GraphQLHandler,
+) {
+    fun go() {
+        javalin
+            .post("/graphql", graphQLHandler)
+            .start()
+    }
+}