BAEL-5049 spring-cloud-dapr (#11063)

* BAEL-5049 Added tutorial code for article.

* BAEL-5049 Added readme.

* Initial code for 2-javasdk to properly include as part of Spring Boot project.

* Added binding with rabbitmq.

* Removed 1-intro module.

* Updates from comments.

* Added .gitignore back in.

* Cleaned up POMs.

* Get rid of .gitignore.

* Change controller to use GetMapping.

Co-authored-by: Gerald Boersma <gerald.boersma@icsynergy.com>

spring-cloud/spring-cloud-dapr/dapr-config/basic-config.yaml

@@ -0,0 +1,5 @@
+apiVersion: dapr.io/v1alpha1
+kind: Configuration
+metadata:
+  name: daprConfig
+spec: {}

spring-cloud/spring-cloud-dapr/dapr-config/consul-config.yaml

@@ -0,0 +1,9 @@
+apiVersion: dapr.io/v1alpha1
+kind: Configuration
+metadata:
+  name: daprConfig
+spec:
+  nameResolution:
+    component: "consul"
+    configuration:
+      selfRegister: true

spring-cloud/spring-cloud-dapr/dapr-config/consul-zipkin-config.yaml

@@ -0,0 +1,13 @@
+apiVersion: dapr.io/v1alpha1
+kind: Configuration
+metadata:
+  name: daprConfig
+spec:
+  nameResolution:
+    component: "consul"
+    configuration:
+      selfRegister: true
+  tracing:
+    samplingRate: "1"
+    zipkin:
+      endpointAddress: "http://localhost:9411/api/v2/spans"

spring-cloud/spring-cloud-dapr/gateway/pom.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung.spring.cloud.spring-cloud-dapr</groupId>
+    <artifactId>gateway</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.2</version>
+        <relativePath/>
+    </parent>
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>org.springframework.cloud</groupId>
+                <artifactId>spring-cloud-dependencies</artifactId>
+                <version>2020.0.3</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.cloud</groupId>
+            <artifactId>spring-cloud-starter-gateway</artifactId>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

spring-cloud/spring-cloud-dapr/gateway/src/main/java/org/example/gateway/GatewayApp.java

@@ -0,0 +1,11 @@
+package org.example.gateway;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GatewayApp {
+    public static void main(String[] args) {
+        SpringApplication.run(GatewayApp.class, args);
+    }
+}

spring-cloud/spring-cloud-dapr/gateway/src/main/resources/application-no-dapr.yml

@@ -0,0 +1,14 @@
+server:
+  port: 3000
+
+spring:
+  cloud:
+    gateway:
+      routes:
+        - id: greeting-service
+          uri: http://localhost:3001/
+          predicates:
+            - Path=/**
+          filters:
+          - RewritePath=/?(?<segment>.*), /$\{segment}
+

spring-cloud/spring-cloud-dapr/gateway/src/main/resources/application-with-dapr.yml

@@ -0,0 +1,13 @@
+server:
+  port: 3000
+
+spring:
+  cloud:
+    gateway:
+      routes:
+        - id: greeting-service
+          uri: http://localhost:4000/
+          predicates:
+            - Path=/**
+          filters:
+          - RewritePath=//?(?<segment>.*), /v1.0/invoke/greeting/method/$\{segment}

spring-cloud/spring-cloud-dapr/greeting/pom.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.baeldung.spring.cloud.spring-cloud-dapr</groupId>
+    <artifactId>greeting</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.5.2</version>
+        <relativePath/>
+    </parent>
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+</project>

spring-cloud/spring-cloud-dapr/greeting/src/main/java/org/example/hello/GreetingApp.java

@@ -0,0 +1,11 @@
+package org.example.hello;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class GreetingApp {
+    public static void main(String[] args) {
+        SpringApplication.run(GreetingApp.class, args);
+    }
+}

spring-cloud/spring-cloud-dapr/greeting/src/main/java/org/example/hello/GreetingController.java

@@ -0,0 +1,22 @@
+package org.example.hello;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class GreetingController {
+    @GetMapping(value = "/")
+    public String getGreeting() {
+        return "Welcome to the greeting service.";
+    }
+
+    @GetMapping(value = "/hello")
+    public String getHello() {
+        return "Hello world!";
+    }
+
+    @GetMapping(value = "/goodbye")
+    public String getGoodbye() {
+        return "Goodbye, cruel world!";
+    }
+}

spring-cloud/spring-cloud-dapr/greeting/src/main/resources/application.yml

@@ -0,0 +1,2 @@
+server:
+  port: 3001

spring-cloud/spring-cloud-dapr/pom.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>spring-cloud-dapr</artifactId>
+    <packaging>pom</packaging>
+
+    <parent>
+        <groupId>com.baeldung.spring.cloud</groupId>
+        <artifactId>spring-cloud</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+
+    <modules>
+        <module>gateway</module>
+        <module>greeting</module>
+    </modules>
+</project>