03_05_GERENCIANDO_TAREFAS_ASSINCRONAS_COM_COROTINAS

.gitignore

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+### IntelliJ IDEA ###
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Kotlin ###
+.kotlin
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

ConhecendoCoroutines.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/test" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/testResources" type="java-test-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="KotlinJavaRuntime" level="project" />
+    <orderEntry type="library" name="jetbrains.kotlinx.coroutines.core" level="project" />
+  </component>
+</module>

src/Main.kt

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+import kotlinx.coroutines.*
+import java.text.SimpleDateFormat
+import java.util.*
+
+// Objetivo: construção de uma casa, trabalhadores operando para contruir uma casa. Subir as paredes e instalar
+// as portas, janelas e telhado.
+
+enum class BuildingMaterial(val description: String, val veliveringTimeInMillis: Long) {
+    DOORS("PORTAS", 500),
+    WINDOWS("JANELAS", 1_000),
+    ROOF("TELHADO", 3_000),
+}
+
+fun getTimeNow(): String =
+    SimpleDateFormat("hh:mm:ss:SSS", Locale.getDefault()).format(Date())
+
+suspend fun order(material: BuildingMaterial): BuildingMaterial {
+    println("${getTimeNow()}  >>>>> SOLICITANDO ${material.description}...")
+    delay(material.veliveringTimeInMillis)
+    println("${getTimeNow()}  >>>>> ${material.description} CHEGARAM!")
+    return material
+}
+
+suspend fun doWork(task: String) {
+    println("${getTimeNow()}  >>>>> EXECUTANDO TAREFA [$task]...")
+    delay(1_000)
+    println("${getTimeNow()}  >>>>> TAREFA [$task] CONCLUÍDA!")
+}
+
+fun main() {
+    runBlocking {
+        val doors = async { order(BuildingMaterial.DOORS) }
+        val roof = async { order(BuildingMaterial.ROOF) }
+        val windows = async { order(BuildingMaterial.WINDOWS) }
+
+        doWork("CONSTRUIR PAREDES")
+        doWork("CONSTRUIR PAREDES")
+        launch { doWork("INSTALAR ${doors.await().description}") }
+        launch { doWork("INSTALAR ${roof.await().description}") }.cancel()
+        launch { doWork("INSTALAR ${windows.await().description}") }
+    }
+}