add version fetching

Author: Psilo

Diff for: Information.template

@@ -0,0 +1,6 @@
+package @package@;
+
+public class Information {
+	public static final String BuildTime = "@buildTime@";
+	public static final String PomVersion = "@pomVersion@";
+}

Diff for: pom.xml

@@ -5,11 +5,13 @@
 	<parent>
 		<groupId>info.unterrainer.commons</groupId>
 		<artifactId>parent-pom</artifactId>
-		<version>0.0.20</version>
+		<version>0.0.21</version>
 	</parent>
 
 	<properties>
 		<mainclass>info.unterrainer.commons.httpserver.HttpServer</mainclass>
+		<package-path>info/unterrainer/commons/httpserver</package-path>
+		<packg-string>info.unterrainer.commons.httpserver</packg-string>
 	</properties>
 
 	<modelVersion>4.0.0</modelVersion>

Diff for: src/main/java/info/unterrainer/commons/httpserver/HttpServer.java

@@ -17,6 +17,7 @@
 import info.unterrainer.commons.httpserver.exceptions.HttpException;
 import info.unterrainer.commons.httpserver.exceptions.NotFoundException;
 import info.unterrainer.commons.httpserver.handlers.AppNameHandler;
+import info.unterrainer.commons.httpserver.handlers.AppVersionHandler;
 import info.unterrainer.commons.httpserver.handlers.DateTimeHandler;
 import info.unterrainer.commons.httpserver.handlers.HealthHandler;
 import info.unterrainer.commons.httpserver.jsons.MessageJson;
@@ -108,6 +109,7 @@ private void create() {
 		});
 
 		get("/", new AppNameHandler(applicationName));
+		get("/version", new AppVersionHandler());
 		get("/datetime", new DateTimeHandler());
 		get("/health", new HealthHandler());
 

Diff for: src/main/java/info/unterrainer/commons/httpserver/Information.java

@@ -0,0 +1,6 @@
+package info.unterrainer.commons.httpserver;
+
+public class Information {
+	public static final String BuildTime = "2020-07-06T13:16:01Z";
+	public static final String PomVersion = "0.0.19";
+}

Diff for: src/main/java/info/unterrainer/commons/httpserver/handlers/AppVersionHandler.java

@@ -0,0 +1,25 @@
+package info.unterrainer.commons.httpserver.handlers;
+
+import info.unterrainer.commons.httpserver.Information;
+import info.unterrainer.commons.httpserver.enums.Attribute;
+import info.unterrainer.commons.httpserver.jsons.AppVersionJson;
+import io.javalin.http.Context;
+import io.javalin.http.Handler;
+import lombok.RequiredArgsConstructor;
+
+@RequiredArgsConstructor
+public class AppVersionHandler implements Handler {
+
+	private AppVersionJson message;
+
+	@Override
+	public void handle(final Context ctx) throws Exception {
+		if (message == null)
+			message = AppVersionJson.builder()
+					.PomVersion(Information.PomVersion)
+					.BuildTime(Information.BuildTime)
+					.build();
+		ctx.attribute(Attribute.RESPONSE_OBJECT, message);
+		ctx.attribute(Attribute.RESPONSE_STATUS, 200);
+	}
+}

Diff for: src/main/java/info/unterrainer/commons/httpserver/jsons/AppVersionJson.java

@@ -0,0 +1,14 @@
+package info.unterrainer.commons.httpserver.jsons;
+
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import lombok.experimental.SuperBuilder;
+
+@Data
+@NoArgsConstructor
+@SuperBuilder(toBuilder = true)
+public class AppVersionJson {
+
+	private String BuildTime;
+	private String PomVersion;
+}