added client part for imageservice

Author: marcus.lang

modules/app/srv/imageservice/rest/client/pom.xml

@@ -16,6 +16,10 @@
       <groupId>${project.groupId}</groupId>
       <artifactId>herbarium-m-app-srv-imagesrv-api</artifactId>
     </dependency>
+    <dependency>
+      <groupId>org.jboss.resteasy</groupId>
+      <artifactId>resteasy-jaxrs</artifactId>
+    </dependency>
   </dependencies>
 
 </project>

modules/app/srv/imageservice/rest/client/src/main/java/org/openherbarium/module/srv/imageservice/rest/endpoint/ImageServiceRestClient.java

@@ -1,8 +1,51 @@
 package org.openherbarium.module.srv.imageservice.rest.endpoint;
 
+import javax.annotation.PostConstruct;
+import javax.ws.rs.client.Client;
+import javax.ws.rs.client.ClientBuilder;
+import javax.ws.rs.core.Response;
+import java.util.Objects;
+
 public class ImageServiceRestClient {
 
-  // TODO
-  // getImage(String id)
+  public static final String PROPERTY_IP = "imageservice.ip";
+  public static final String PROPERTY_PORT = "imageservice.port";
+  public static final String DEFAULT_PORT = "8080";
+  public static final String DEFAULT_IP = "127.0.0.1";
+
+  private String serverIp;
+  private String serverPort;
+
+  @PostConstruct
+  public void init() {
+    this.serverIp = System.getProperty(PROPERTY_IP, DEFAULT_IP);
+    this.serverPort = System.getProperty(PROPERTY_PORT, DEFAULT_PORT);
+    if (Objects.isNull(serverIp)) throw new NullPointerException("serverIP is null");
+    if (Objects.isNull(serverPort)) throw new NullPointerException("serverPort is null");
+  }
+
+  public String getImageProperties(String imageid) {
+    final Client client = ClientBuilder.newClient();
+
+    final Response response = client.target(buildBaseUrl() + imageid + "/" + "properties")
+        .request()
+        .get();
+
+    return response.readEntity(String.class);
+  }
+
+  public byte[] getImage(String imageid, String tilegroup, String image) {
+    final Client client = ClientBuilder.newClient();
+
+    final Response response = client.target(buildBaseUrl() + imageid + "/" + tilegroup + "/" + image)
+        .request()
+        .get();
+
+    return response.readEntity(byte[].class);
+  }
+
 
+  private String buildBaseUrl() {
+    return String.format("http://%s:%s/rest/imageservice/", serverIp, serverPort);
+  }
 }