Merge pull request #1 from connorwyatt/server

Server package

server/build.gradle.kts

@@ -0,0 +1,19 @@
+dependencies {
+    implementation(project(":configuration"))
+    implementation(project(":eventstore"))
+    implementation(project(":http"))
+    implementation(project(":mongodb"))
+    implementation(project(":rabbitmq"))
+    implementation(project(":time"))
+
+    implementation(libraries.kodein.di)
+    implementation(libraries.kodein.di.framework.ktor.server)
+    implementation(libraries.ktor.serialization.kotlinx.json)
+    implementation(libraries.ktor.server.callId)
+    implementation(libraries.ktor.server.callLogging)
+    implementation(libraries.ktor.server.cio)
+    implementation(libraries.ktor.server.contentNegotiation)
+    implementation(libraries.ktor.server.core)
+    implementation(libraries.ktor.server.requestValidation)
+    implementation(libraries.ktor.server.statusPages)
+}

server/src/main/kotlin/io/connorwyatt/common/server/ApplicationConfiguration.kt

@@ -0,0 +1,103 @@
+package io.connorwyatt.common.server
+
+import io.connorwyatt.common.eventstore.configuration.EventStoreConfiguration
+import io.connorwyatt.common.eventstore.ktor.configureEventStore
+import io.connorwyatt.common.mongodb.configuration.MongoDBConfiguration
+import io.connorwyatt.common.mongodb.ktor.configureMongoDB
+import io.connorwyatt.common.rabbitmq.configuration.RabbitMQConfiguration
+import io.connorwyatt.common.rabbitmq.ktor.configureRabbitMQ
+import io.ktor.server.application.*
+import io.ktor.server.plugins.requestvalidation.*
+import io.ktor.server.plugins.statuspages.*
+import io.ktor.server.routing.*
+import kotlinx.coroutines.runBlocking
+import org.kodein.di.DI
+import org.kodein.di.ktor.di
+
+class ApplicationConfiguration(block: Builder.() -> Unit) {
+    val di = DI { importAll(builder.diModules) }
+
+    private val builder: Builder = Builder().apply(block)
+
+    fun applyTo(application: Application) {
+        application.apply {
+            di { extend(di) }
+            builder.mongoDBConfiguration?.let { runBlocking { configureMongoDB() } }
+            builder.eventStoreConfiguration?.let { configureEventStore(it) }
+            builder.rabbitMQConfiguration?.let { configureRabbitMQ(it) }
+            configureSerialization()
+            builder.configureRequestValidation?.let { configureRequestValidation(it) }
+            configureStatusPages(builder.configureStatusPages)
+            configureCallId()
+            configureCallLogging()
+            builder.configureRouting?.let { configureRouting(it) }
+        }
+    }
+
+    class Builder internal constructor() {
+        internal var diModules = listOf<DI.Module>()
+            private set
+
+        internal var eventStoreConfiguration: EventStoreConfiguration? = null
+            private set
+
+        internal var mongoDBConfiguration: MongoDBConfiguration? = null
+            private set
+
+        internal var rabbitMQConfiguration: RabbitMQConfiguration? = null
+            private set
+
+        internal var http: Boolean = false
+            private set
+
+        internal var time: Boolean = false
+            private set
+
+        internal var configureRequestValidation: (RequestValidationConfig.() -> Unit)? = null
+            private set
+
+        internal var configureStatusPages: (StatusPagesConfig.() -> Unit)? = null
+            private set
+
+        internal var configureRouting: (Routing.() -> Unit)? = null
+            private set
+
+        fun addDIModule(diModule: DI.Module) {
+            diModules = diModules.plus(diModule)
+        }
+
+        fun addEventStore(eventStoreConfiguration: EventStoreConfiguration) {
+            this.eventStoreConfiguration = eventStoreConfiguration
+        }
+
+        fun addMongoDB(mongoDBConfiguration: MongoDBConfiguration) {
+            this.mongoDBConfiguration = mongoDBConfiguration
+        }
+
+        fun addRabbitMQ(rabbitMQConfiguration: RabbitMQConfiguration) {
+            this.rabbitMQConfiguration = rabbitMQConfiguration
+        }
+
+        fun addHttp() {
+            this.http = true
+        }
+
+        fun addTime() {
+            this.time = true
+        }
+
+        fun configureRequestValidation(
+            configureRequestValidation: RequestValidationConfig.() -> Unit
+        ) {
+            this.configureRequestValidation = configureRequestValidation
+        }
+
+        fun configureStatusPages(configureStatusPages: StatusPagesConfig.() -> Unit) {
+            this.configureStatusPages = configureStatusPages
+        }
+
+        fun configureRouting(configureRouting: Routing.() -> Unit) {
+            this.configureRouting = configureRouting
+        }
+    }
+}

server/src/main/kotlin/io/connorwyatt/common/server/ApplicationExt.kt

@@ -0,0 +1,60 @@
+package io.connorwyatt.common.server
+
+import io.connorwyatt.common.http.validation.ValidationProblemResponse
+import io.ktor.http.*
+import io.ktor.serialization.kotlinx.json.*
+import io.ktor.server.application.*
+import io.ktor.server.plugins.callid.*
+import io.ktor.server.plugins.callloging.*
+import io.ktor.server.plugins.contentnegotiation.*
+import io.ktor.server.plugins.requestvalidation.*
+import io.ktor.server.plugins.statuspages.*
+import io.ktor.server.request.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import java.util.*
+
+internal fun Application.configureSerialization() {
+    install(ContentNegotiation) { json() }
+}
+
+internal fun Application.configureRequestValidation(configure: RequestValidationConfig.() -> Unit) {
+    install(RequestValidation) { configure.invoke(this) }
+}
+
+internal fun Application.configureStatusPages(configure: (StatusPagesConfig.() -> Unit)? = null) {
+    install(StatusPages) {
+        exception<RequestValidationException> { call, cause ->
+            call.response.headers.append(
+                HttpHeaders.ContentType,
+                ContentType.Application.ProblemJson.toString()
+            )
+            call.respond(HttpStatusCode.BadRequest, ValidationProblemResponse(cause.reasons))
+        }
+        exception<Throwable> { call, _ ->
+            call.respondText("", ContentType.Any, status = HttpStatusCode.InternalServerError)
+        }
+        configure?.invoke(this)
+    }
+}
+
+internal fun Application.configureCallId() {
+    install(CallId) {
+        generate { UUID.randomUUID().toString() }
+        replyToHeader(HttpHeaders.XRequestId)
+    }
+}
+
+internal fun Application.configureCallLogging() {
+    install(CallLogging) {
+        callIdMdc("request-id")
+        disableDefaultColors()
+        mdc("http-method") { call -> call.request.httpMethod.value }
+        mdc("request-url") { call -> call.request.uri }
+        mdc("status-code") { call -> call.response.status()?.value?.toString() }
+    }
+}
+
+internal fun Application.configureRouting(configure: Routing.() -> Unit) {
+    routing { configure.invoke(this) }
+}

server/src/main/kotlin/io/connorwyatt/common/server/Server.kt

@@ -0,0 +1,15 @@
+package io.connorwyatt.common.server
+
+import io.ktor.server.cio.*
+import io.ktor.server.engine.*
+
+class Server(port: Int, private val applicationConfiguration: ApplicationConfiguration) {
+    private val applicationEngine =
+        embeddedServer(CIO, port = port, host = "localhost") {
+            applicationConfiguration.applyTo(this)
+        }
+
+    fun start() {
+        applicationEngine.start(wait = true)
+    }
+}

settings.gradle.kts

@@ -8,6 +8,7 @@ include(":http")
 include(":mongodb")
 include(":optional")
 include(":rabbitmq")
+include(":server")
 include(":time")
 
 pluginManagement {
@@ -66,7 +67,18 @@ dependencyResolutionManagement {
             )
             library("ktor-client-cio", "io.ktor", "ktor-client-cio").version(ktorVersion)
             library("ktor-client-core", "io.ktor", "ktor-client-core").version(ktorVersion)
+            library("ktor-serialization-kotlinx-json", "io.ktor", "ktor-serialization-kotlinx-json").version(
+                ktorVersion
+            )
+            library("ktor-server-callId","io.ktor", "ktor-server-call-id").version(ktorVersion)
+            library("ktor-server-callLogging","io.ktor", "ktor-server-call-logging").version(ktorVersion)
+            library("ktor-server-cio", "io.ktor", "ktor-server-cio").version(ktorVersion)
+            library("ktor-server-contentNegotiation", "io.ktor", "ktor-server-content-negotiation").version(
+                ktorVersion
+            )
             library("ktor-server-core", "io.ktor", "ktor-server-core").version(ktorVersion)
+            library("ktor-server-requestValidation", "io.ktor","ktor-server-request-validation").version(ktorVersion)
+            library("ktor-server-statusPages", "io.ktor","ktor-server-status-pages").version(ktorVersion)
             library("mongoDB-driver", "org.mongodb", "mongodb-driver-kotlin-coroutine").version(mongoDBDriverVersion)
             library("rabbitMQ-client", "com.rabbitmq", "amqp-client").version(
                 rabbitMQClientVersion