First example code for assignment call in java

modules/ui/app/resources/samplecode/java/Assignment.java

@@ -0,0 +1,65 @@
+import org.json.simple.JSONObject;
+import org.json.simple.parser.JSONParser;
+import org.json.simple.parser.ParseException;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+/**
+ * This class contains the sample code to get a wasabi assignments.
+ */
+public class Assignment {
+
+  public static void main(String[] args) throws IOException, ParseException {
+    System.out.print(getAssignment("ApplicationName", "ExperimentName", "UserName"));
+  }
+
+
+  /**
+   * This method calls the Wasabi Api to get an assignment for the specified experiment and user.
+   *
+   * @param application the Applicationname the experiment is running in
+   * @param experiment  the name of the Experiment
+   * @param user        the user for whom an Assignment should be generated
+   * @return the Assignment or <code>null</code> if the configuration was wrong
+   * @throws IOException
+   * @throws ParseException
+   */
+  private static Object getAssignment(String application, String experiment, String user) throws IOException, ParseException {
+
+    String urlAssignment = "https://abtesting.intuit.com/api/v1/assignments/applications/" + application
+      + "/experiments/" + experiment + "/users/" + user;
+
+    URL url = new URL(urlAssignment);
+    HttpURLConnection connection = (HttpURLConnection) url.openConnection();
+
+    connection.setRequestMethod("GET");
+
+    // give it 500 milliseconds to respond
+    connection.setReadTimeout(500);
+    connection.connect();
+
+    // read the output from the server
+    BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));
+
+    /*
+    The response from the server is a json with the following exemplary entries:
+     {"cache":true,
+     "payload":null,
+     "assignment":"b",
+     "context":"PROD",
+     "status":"EXISTING_ASSIGNMENT"}
+     */
+    String line = reader.readLine();
+
+    JSONParser parser = new JSONParser();
+    JSONObject assignment = (JSONObject) parser.parse(line);
+
+    return assignment.get("assignment"); // if you are just interested in the assignment take the 'assignment' field
+  }
+
+}
+