Merge pull request quarkus-qe#210 from pjgg/feat/kamelet

Add Kamelet module

023-quarkus-kamelet/README.md

@@ -0,0 +1,24 @@
+# Quarkus - Kamelet
+
+Quarkus-kamelet provide you support to interacting with Camel routes templates.
+The aim of this module is to cover the following Kamelet scenarios:
+* Camel producers, those scenarios where your service produces events and are consumed by a camel route
+* Camel consumers, those scenarios where your service consumes a camel route
+* Chain routes multiples routes
+* Load application properties as routes bodies
+* Validate Kamelet resources as ocp/k8s kamelet yamls(routes-temapltes, routes-bindings...)
+
+Project folder structure
+
+* `/resources/kamelets` contains kamelets resources as templates or KameletBindings. Also, there are groovy scripts 
+in order to instantiate these templates by your self (as an example). 
+
+* `io.quarkus.qe.kamelet.KameletRoutes` contains templates that could be invoked (tested) directly by code. So is not 
+need it to be deployed into ocp or some other platform. 
+
+### Recommended Readings
+[Kamelet introduction](https://camel.apache.org/camel-k/latest/kamelets/kamelets-user.html)
+
+[Kamelets developer guide](https://camel.apache.org/camel-k/latest/kamelets/kamelets-dev.html)
+
+[Camel-Quarkus first steps](https://camel.apache.org/camel-quarkus/latest/user-guide/first-steps.html)

023-quarkus-kamelet/pom.xml

@@ -0,0 +1,32 @@
+<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <parent>
+        <groupId>io.quarkus.qe</groupId>
+        <artifactId>beefy-scenarios</artifactId>
+        <version>1.0.0-SNAPSHOT</version>
+    </parent>
+    <artifactId>023-quarkus-kamelet</artifactId>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-kamelet</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-timer</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.camel.quarkus</groupId>
+            <artifactId>camel-quarkus-direct</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-resteasy</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-resteasy-jsonb</artifactId>
+        </dependency>
+    </dependencies>
+</project>

023-quarkus-kamelet/src/main/java/io/quarkus/qe/kamelet/KameletResource.java

@@ -0,0 +1,51 @@
+package io.quarkus.qe.kamelet;
+
+import javax.inject.Inject;
+import javax.ws.rs.Consumes;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.Path;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.MediaType;
+
+import org.apache.camel.ConsumerTemplate;
+import org.apache.camel.FluentProducerTemplate;
+
+@Path("/kamelet")
+public class KameletResource {
+
+    @Inject
+    FluentProducerTemplate fluentProducerTemplate;
+
+    @Inject
+    ConsumerTemplate consumerTemplate;
+
+    @Path("/produce")
+    @POST
+    @Consumes(MediaType.TEXT_PLAIN)
+    @Produces(MediaType.TEXT_PLAIN)
+    public String produceToKamelet(String message) {
+        return fluentProducerTemplate.toF("kamelet:setBody/test?bodyValue=%s", message).request(String.class);
+    }
+
+    @Path("/timer")
+    @GET
+    @Produces(MediaType.TEXT_PLAIN)
+    public Integer consumeFromKamelet() {
+        return consumerTemplate.receiveBody("kamelet:tick", 10000, Integer.class);
+    }
+
+    @Path("/property")
+    @GET
+    @Produces(MediaType.TEXT_PLAIN)
+    public String bodyFromApplicationProperty() {
+        return fluentProducerTemplate.to("kamelet:setBodyFromProperties").request(String.class);
+    }
+
+    @Path("/chain")
+    @POST
+    @Produces(MediaType.TEXT_PLAIN)
+    public String kameletChain(String message) {
+        return fluentProducerTemplate.to("direct:chain").withBody(message).request(String.class);
+    }
+}

023-quarkus-kamelet/src/main/java/io/quarkus/qe/kamelet/KameletRoutes.java

@@ -0,0 +1,35 @@
+package io.quarkus.qe.kamelet;
+
+import org.apache.camel.Exchange;
+import org.apache.camel.builder.RouteBuilder;
+
+public class KameletRoutes extends RouteBuilder {
+
+    @Override
+    public void configure() throws Exception {
+        routeTemplate("setBody")
+                .templateParameter("bodyValue")
+                .from("kamelet:source")
+                .setBody().constant("Hello {{bodyValue}}");
+
+        routeTemplate("tick")
+                .from("timer:{{routeId}}?repeatCount=1&delay=-1")
+                .setBody().exchangeProperty(Exchange.TIMER_COUNTER)
+                .to("kamelet:sink");
+
+        routeTemplate("setBodyFromProperties")
+                .templateParameter("bodyValueFromProperty")
+                .from("kamelet:source")
+                .setBody().constant("Hello {{bodyValueFromProperty}}");
+
+        routeTemplate("echo")
+                .templateParameter("prefix")
+                .templateParameter("suffix")
+                .from("kamelet:source")
+                .setBody().simple("{{prefix}} ${body} {{suffix}}");
+
+        from("direct:chain")
+                .to("kamelet:echo/1?prefix=Camel Quarkus&suffix=Chained")
+                .to("kamelet:echo/2?prefix=Hello&suffix=Route");
+    }
+}

023-quarkus-kamelet/src/main/resources/application.properties

@@ -0,0 +1,4 @@
+# kamelet.names, must match with kamelets prefix name, ex: {prefix}.kamelet.yaml
+quarkus.camel.kamelet.names = logger, fresh-beer
+
+camel.kamelet.setBodyFromProperties.bodyValueFromProperty=World from property

023-quarkus-kamelet/src/main/resources/kamelets/fresh-beer-integration-example.groovy

@@ -0,0 +1,3 @@
+package kamelets
+
+from('kamelet:beer-source').log('${body}')

023-quarkus-kamelet/src/main/resources/kamelets/fresh-beer.Kamelet.yaml

@@ -0,0 +1,27 @@
+apiVersion: camel.apache.org/v1alpha1
+kind: Kamelet
+metadata:
+  name: beer-source
+  labels:
+    camel.apache.org/kamelet.type: "source"
+spec:
+  definition:
+    title: "Beer Source"
+    description: "Retrieve a random beer from catalog"
+    properties:
+      period:
+        title: Period
+        description: The interval between two events
+        type: integer
+        default: 1000
+  types:
+    out:
+      mediaType: application/json
+  flow:
+    from:
+      uri: timer:tick
+      parameters:
+        period: "#property:period"
+      steps:
+        - to: "https://random-data-api.com/api/beer/random_beer"
+        - to: "kamelet:sink"

023-quarkus-kamelet/src/main/resources/kamelets/logger.kamelet.yaml

@@ -0,0 +1,39 @@
+apiVersion: camel.apache.org/v1alpha1
+kind: Kamelet
+metadata:
+  labels:
+    camel.apache.org/kamelet.type: "sink"
+    camel.apache.org/kamelet.name: "log"
+    camel.apache.org/kamelet.version: "v1alpha1"
+spec:
+  definition:
+    title: "Logger"
+    description: "Logger"
+    properties:
+      loggerName:
+        title: Name of the logging category
+        description:  Name of the logging category
+        type: string
+        default: "logger"
+      showAll:
+        title: Show All
+        description: Show All
+        type: boolean
+        default: false
+      multiLine:
+        title: Multi Line
+        description: Multi Line
+        type: boolean
+        default: false
+  dependencies:
+    - "camel:log"
+  flow:
+    from:
+      uri: "kamelet:source"
+      steps:
+        - to:
+            uri: "log"
+            properties:
+              loggerName: "{{loggerName}}"
+              showAll: "{{showAll}}"
+              multiline: "{{multiLine}}"

023-quarkus-kamelet/src/test/java/io/quarkus/qe/kamelet/KameletIT.java

@@ -0,0 +1,8 @@
+package io.quarkus.qe.kamelet;
+
+import io.quarkus.test.junit.NativeImageTest;
+
+@NativeImageTest
+class KameletIT extends KameletTest {
+
+}

023-quarkus-kamelet/src/test/java/io/quarkus/qe/kamelet/KameletTest.java

@@ -0,0 +1,52 @@
+package io.quarkus.qe.kamelet;
+
+import static org.hamcrest.Matchers.is;
+
+import org.junit.jupiter.api.Test;
+
+import io.quarkus.test.junit.QuarkusTest;
+import io.restassured.RestAssured;
+import io.restassured.http.ContentType;
+
+@QuarkusTest
+class KameletTest {
+    @Test
+    public void testKameletProducerHelloWorld() {
+        String message = "World";
+
+        RestAssured.given()
+                .contentType(ContentType.TEXT)
+                .body(message)
+                .post("/kamelet/produce")
+                .then()
+                .statusCode(200)
+                .body(is("Hello " + message));
+    }
+
+    @Test
+    public void testKameletTimerConsumer() {
+        RestAssured.get("/kamelet/timer")
+                .then()
+                .statusCode(200)
+                .body(is("1"));
+    }
+
+    @Test
+    public void testKameletWithProperties() {
+        RestAssured.get("/kamelet/property")
+                .then()
+                .statusCode(200)
+                .body(is("Hello World from property"));
+    }
+
+    @Test
+    public void testKameletChain() {
+        RestAssured.given()
+                .contentType(ContentType.TEXT)
+                .body("Kamelet")
+                .post("/kamelet/chain")
+                .then()
+                .statusCode(200)
+                .body(is("Hello Camel Quarkus Kamelet Chained Route"));
+    }
+}

pom.xml

@@ -24,6 +24,7 @@
         <module>020-quarkus-http-non-application-endpoints</module>
         <module>021-quarkus-panache-multiple-pus</module>
         <module>022-quarkus-properties-config-all</module>
+        <module>023-quarkus-kamelet</module>
         <module>101-javaee-like-getting-started</module>
         <module>201-large-static-content</module>
         <module>300-quarkus-vertx-webClient</module>
@@ -49,6 +50,7 @@
         <apicurio-registry-utils-serde.version>1.3.2.Final</apicurio-registry-utils-serde.version>
         <confluent.kafka-avro-serializer.version>6.0.0</confluent.kafka-avro-serializer.version>
         <version.quarkiverse.apicurio.registry.client>0.0.2</version.quarkiverse.apicurio.registry.client>
+        <version.quarkus.camel>1.8.1</version.quarkus.camel>
         <formatter-maven-plugin.version>2.15.0</formatter-maven-plugin.version>
         <impsort-maven-plugin.version>1.6.0</impsort-maven-plugin.version>
         <xml-format-maven-plugin>3.1.2</xml-format-maven-plugin>
@@ -105,6 +107,21 @@
                 <artifactId>quarkiverse-apicurio-registry-client</artifactId>
                 <version>${version.quarkiverse.apicurio.registry.client}</version>
             </dependency>
+            <dependency>
+                <groupId>org.apache.camel.quarkus</groupId>
+                <artifactId>camel-quarkus-kamelet</artifactId>
+                <version>${version.quarkus.camel}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.camel.quarkus</groupId>
+                <artifactId>camel-quarkus-timer</artifactId>
+                <version>${version.quarkus.camel}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.apache.camel.quarkus</groupId>
+                <artifactId>camel-quarkus-direct</artifactId>
+                <version>${version.quarkus.camel}</version>
+            </dependency>
         </dependencies>
     </dependencyManagement>
     <dependencies>