Add coherence to archetype

Author: tvallin

archetypes/archetypes/filters.properties

@@ -37,8 +37,8 @@ health=!${health} || ${health.builtin}
 metrics=!${metrics} || ${metrics.builtin}
 
 # group extra options
-extra=${extra} == [] || ${extra} == ['cors', 'fault-tolerance'] || \
-  (${flavor} == 'se' && ${extra} == ['webclient', 'cors', 'fault-tolerance'])
+extra=${extra} == [] || ${extra} == ['cors', 'fault-tolerance', 'coherence'] || \
+  (${flavor} == 'se' && ${extra} == ['webclient', 'cors', 'fault-tolerance', 'coherence'])
 
 # group docker, k8s, v8o and multi-module
 packaging=!(${docker} || ${k8s} || ${v8o}) || (${docker} && ${k8s} && ${v8o})

archetypes/archetypes/src/main/archetype/defaults.xml

@@ -82,5 +82,7 @@
         <boolean path="requires-org-jvnet-mimepull">false</boolean>
         <boolean path="requires-com-fasterxml-jackson-annotation">false</boolean>
         <boolean path="requires-com-fasterxml-jackson-core">false</boolean>
+        <boolean path="requires-com-oracle-coherence">false</boolean>
+        <boolean path="requires-com-oracle-coherence-cdi">false</boolean>
     </variables>
 </archetype-script>

archetypes/archetypes/src/main/archetype/features/customize-project/inputs.xml

@@ -20,7 +20,7 @@
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation="https://helidon.io/archetype/2.0 https://helidon.io/xsd/archetype-2.0.xsd">
     <inputs>
-        <enum id="build-system" name="Select a Build System" default="maven" optional="true">
+        <enum id="build-system" name="Select a Build System" optional="true" default="maven">
             <option value="maven" name="Apache Maven"/>
         </enum>
         <text id="groupId" name="Project groupId" optional="true" default="com.examples"/>

archetypes/archetypes/src/main/archetype/features/jpms/output.xml

@@ -85,6 +85,8 @@
                 <value if="${requires-org-jvnet-mimepull}">org.jvnet.mimepull</value>
                 <value if="${requires-com-fasterxml-jackson-annotation}">com.fasterxml.jackson.annotation</value>
                 <value if="${requires-com-fasterxml-jackson-core}">com.fasterxml.jackson.core</value>
+                <value if="${requires-com-oracle-coherence}">com.oracle.coherence</value>
+                <value if="${requires-com-oracle-coherence-cdi}">com.oracle.coherence.cdi</value>
             </list>
         </model>
     </output>

archetypes/archetypes/src/main/archetype/features/maven/files/pom.xml.hbs

@@ -13,14 +13,59 @@
     <artifactId>{{artifactId}}</artifactId>
     <version>{{project-version}}</version>
 
-{{#mainClass}}
+{{#pom-properties}}
+{{#first}}
     <properties>
-        <mainClass>{{mainClass}}</mainClass>
+{{/first}}
+        <{{key}}>{{value}}</{{key}}>
+{{#last}}
     </properties>
 
-{{/mainClass}}
-    <dependencies>
+{{/last}}
+{{/pom-properties}}
+{{#dependencies-management}}
+{{#first}}
+    <dependencyManagement>
+        <dependencies>
+{{/first}}
+            <dependency>
+                <groupId>{{groupId}}</groupId>
+                <artifactId>{{artifactId}}</artifactId>
+{{#version}}
+                <version>{{.}}</version>
+{{/version}}
+{{#scope}}
+                <scope>{{.}}</scope>
+{{/scope}}
+{{#type}}
+                <type>{{.}}</type>
+{{/type}}
+{{#optional}}
+                <optional>{{.}}</optional>
+{{/optional}}
+{{#exclusions}}
+{{#first}}
+                <exclusions>
+{{/first}}
+                <exclusion>
+                    <groupId>{{groupId}}</groupId>
+                    <artifactId>{{artifactId}}</artifactId>
+                </exclusion>
+{{#last}}
+                </exclusions>
+{{/last}}
+{{/exclusions}}
+            </dependency>
+{{#last}}
+        </dependencies>
+    </dependencyManagement>
+
+{{/last}}
+{{/dependencies-management}}
 {{#dependencies}}
+{{#first}}
+    <dependencies>
+{{/first}}
         <dependency>
             <groupId>{{groupId}}</groupId>
             <artifactId>{{artifactId}}</artifactId>
@@ -49,9 +94,11 @@
 {{/first}}
 {{/exclusions}}
         </dependency>
-{{/dependencies}}
+{{#last}}
     </dependencies>
 
+{{/last}}
+{{/dependencies}}
     <build>
         <plugins>
             <plugin>

archetypes/archetypes/src/main/archetype/nodes/mp/features/coherence/files/README-Exercise-Application.md

@@ -0,0 +1,9 @@
+```shell
+curl -X POST -H "Content-Type: application/json" \
+ -d '{"ssn" : "123-45-6789", "firstName" : "Frank", "lastName" : "Helidon", "dateOfBirth" : "02/14/2019"}' \
+  http://localhost:8080/creditscore
+```
+
+You'll notice a short delay as the application computes the credit score.
+Now repeat the same request. You'll see the score is returned instantly
+as it is retrieved from the cache.

archetypes/archetypes/src/main/archetype/nodes/mp/features/coherence/files/README.md

@@ -0,0 +1,3 @@
+# helidon-creditscore-mp
+
+Sample Helidon MP applications that uses Coherence CE as a cache for application data.

archetypes/archetypes/src/main/archetype/nodes/mp/features/coherence/files/src/main/java/__pkg__/CoherenceResource.java.hbs

@@ -0,0 +1,76 @@
+package {{package}};
+
+import com.oracle.coherence.cdi.Name;
+import com.tangosol.net.NamedCache;
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.inject.Inject;
+import jakarta.ws.rs.Consumes;
+import jakarta.ws.rs.POST;
+import jakarta.ws.rs.Path;
+import jakarta.ws.rs.Produces;
+import jakarta.ws.rs.core.MediaType;
+import jakarta.ws.rs.core.Response;
+
+import static java.lang.System.Logger.Level.INFO;
+
+/**
+*  Coherence resource.
+*/
+@ApplicationScoped
+@Path("/creditscore")
+public class CoherenceResource {
+
+    private static final System.Logger LOGGER = System.getLogger(CoherenceResource.class.getName());
+    private static final String CACHE_NAME = "creditScoreCache";
+    private static final int SCORE_MAX = 800;
+    private static final int SCORE_MIN = 550;
+
+    @Inject
+    @Name(CACHE_NAME)
+    private NamedCache<String, Integer> creditScoreCache;
+
+    /**
+    * Generate a credit score.
+    * @param person Person to generate score for
+    * @return Person with score populated and ssn redacted
+    */
+    @POST
+    @Consumes(MediaType.APPLICATION_JSON)
+    @Produces(MediaType.APPLICATION_JSON)
+    public Response postCreditScore(Person person) {
+
+        if (person.firstName() == null || person.lastName() == null || person.dateOfBirth() == null || person.ssn() == null) {
+        return Response.status(Response.Status.BAD_REQUEST).entity("Bad request").build();
+        }
+
+        LOGGER.log(INFO, "Computing credit score for " + person.firstName() + " " + person.lastName());
+
+        String ssn = person.ssn();
+        Integer creditScore = creditScoreCache.get(ssn);
+
+        if (creditScore == null) {
+            creditScore = calculateCreditScore(person);
+            creditScoreCache.put(ssn, creditScore);
+        }
+        return Response.ok(
+            new Person(person.firstName(), person.lastName(), person.dateOfBirth(), "NNN-NN-NNNN", creditScore))
+            .build();
+    }
+
+    private int calculateCreditScore(Person p) {
+        int score = Math.abs(p.hashCode()) % SCORE_MAX;
+        while (score < SCORE_MIN) {
+            score += 100;
+        }
+        // Pause for dramatic effect
+        sleep();
+        return score;
+    }
+
+    private void sleep() {
+        try {
+            Thread.sleep(2_000L);
+        } catch (InterruptedException ignored) {
+        }
+    }
+}

archetypes/archetypes/src/main/archetype/nodes/mp/features/coherence/files/src/main/java/__pkg__/Person.java.hbs

@@ -0,0 +1,8 @@
+package {{package}};
+
+public record Person(
+    String firstName,
+    String lastName,
+    String dateOfBirth,
+    String ssn,
+    int creditScore) {}

archetypes/archetypes/src/main/archetype/nodes/mp/features/coherence/files/src/main/resources/META-INF/microprofile-config.properties

@@ -0,0 +1,4 @@
+# Coherence configuration
+coherence.ttl=0
+coherence.localhost=127.0.0.1
+coherence.wka=127.0.0.1