2019-08-07

package com.wh.rest

import io.vertx.core.AbstractVerticle
import io.vertx.core.http.HttpServerResponse
import io.vertx.ext.web.Router
import io.vertx.ext.web.RoutingContext
import io.vertx.ext.web.handler.BodyHandler
import io.vertx.kotlin.core.json.array
import io.vertx.kotlin.core.json.json
import io.vertx.kotlin.core.json.obj


/**
 * @Author hw83770
 * @Date 16:09 2019/8/8
 *
 */
class SimpleREST : AbstractVerticle() {
  override fun start() {
    initData()
    val router = Router.router(vertx)

    router.route().handler(BodyHandler.create())
    router.get("/products/:productID").handler { handleGetProduct(it) }
    router.put("/products/:productID").handler { handleAddProduct(it) }
    router.get("/products").handler { handleListProducts(it) }

    vertx.createHttpServer().requestHandler(router).listen(8080) { res ->
      if (res.failed()) {
        res.cause().printStackTrace()
      } else {
        System.out.println("Server listening at: http://localhost:8080/")
      }
    }

  }

  var products = mutableMapOf<String, Any?>()

  fun addProduct(product: io.vertx.core.json.JsonObject) {
    products[product.getString("id")] = product
  }

  private fun initData() {
    addProduct(json {
      obj(
        "id" to "prod3568",
        "name" to "Egg Whisk",
        "price" to 3.99,
        "weight" to 150
      )
    })
    addProduct(json {
      obj(
        "id" to "prod7340",
        "name" to "Tea Cosy",
        "price" to 5.99,
        "weight" to 100
      )
    })
    addProduct(json {
      obj(
        "id" to "prod8643",
        "name" to "Spatula",
        "price" to 1.0,
        "weight" to 80
      )
    })
  }


  fun handleAddProduct(ctx: RoutingContext) {
    val productID = ctx.request().getParam("productID")
    val response = ctx.response()
    if (productID == null) {
      sendError(400, response)
    } else {
      val product = ctx.bodyAsJson
      if (product == null) {
        sendError(400, response)
      } else {
        products[productID] = product
        response.end()
      }
    }
  }

  fun handleListProducts(ctx: RoutingContext) {
    val arr = json {
      array()
    }
    for (v in products.values) {
      arr.add(v)
    }

    ctx.response().putHeader("content-type", "application/json").end(arr.toString())
  }

  fun handleGetProduct(ctx: RoutingContext) {
    val productID: String? = ctx.request().getParam("productID")
    val response = ctx.response()

    if (null == productID) {
      sendError(400, response)
    } else {
      val product = products[productID]
      if (product == null) {
        sendError(404, response)
      } else {
        response.putHeader("content-type", "application/json").end(product.toString())
      }
    }
  }

  fun sendError(statusCode: Int, response: HttpServerResponse) {
    response.setStatusCode(statusCode).end()
  }

}

build.gradle

buildscript {
  repositories {
    maven {
      url 'https://www.artifactrepository.citigroup.net:443/artifactory/maven-icg-dev'
      credentials {
        username 'ocean-devops'
        password 'APBQW78wqY4oewwXFBtTfcN17ZG'
      }
    }
//    mavenCentral()
  }
  dependencies {
    classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.0'
//    classpath 'gradle.plugin.io.vertx:vertx-gradle-plugin:0.8.0'
  }
}

// new version of build script
//plugins {
//  id "io.vertx.vertx-plugin" version "0.8.0"
//  id "org.jetbrains.kotlin.jvm" version "1.3.0"
//}


apply plugin: 'kotlin'
apply plugin: 'java'
apply from: 'http://oceanfw.hub.nam.nsroot.net/file/oceanfw/build/build-common.gradle'
version = '0.0.1-SNAPSHOT'
group = 'com.wh'

ext {
  vertx_version = '3.7.0'
  slf4j_version = '1.7.22'
}

dependencies {
  compile 'org.jetbrains.kotlin:kotlin-stdlib-jdk8'
  compile 'org.jetbrains.kotlin:kotlin-reflect:1.3.0'
  compile "org.slf4j:slf4j-jdk14:${slf4j_version}"
  
  compile "io.vertx:vertx-core:${vertx_version}"
  compile "io.vertx:vertx-web:${vertx_version}"
  compile "io.vertx:vertx-unit:${vertx_version}"
  compile "io.vertx:vertx-auth-shiro:${vertx_version}"
  compile "io.vertx:vertx-web-templ-thymeleaf:${vertx_version}"
  
  compile "io.vertx:vertx-lang-kotlin:${vertx_version}"
  
}

compileKotlin {
  kotlinOptions.jvmTarget = '1.8'
}

compileTestKotlin {
  kotlinOptions.jvmTarget = '1.8'
}

//vertx {
//  mainVerticle = "com.wh.vertx_startup.MainVerticle"
//  vertxVersion = "3.8.0"
//}

tasks.withType(org.jetbrains.kotlin.gradle.tasks.KotlinCompile).all {
  kotlinOptions {
    jvmTarget = "1.8"
  }
}