Add JsonScript file and lib

Author: idawatibustan

.classpath

@@ -3,5 +3,8 @@
 	<classpathentry kind="src" path="src"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
 	<classpathentry kind="con" path="org.eclipse.fx.ide.jdt.core.JAVAFX_CONTAINER"/>
+	<classpathentry kind="lib" path="lib/commons-logging-1.2.jar"/>
+	<classpathentry kind="lib" path="lib/org.apache.httpcomponents.httpclient_4.5.2.jar"/>
+	<classpathentry kind="lib" path="lib/org.apache.httpcomponents.httpcore_4.4.4.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>

apiInfo.txt

@@ -0,0 +1,2 @@
+https://ussouthcentral.services.azureml.net/workspaces/13aa607b8c614bc99a4768efb4c7fda2/services/935a698dd2fa47edb09466efe4c274dc/execute?api-version=2.0&details=true
+kCz11KLq8ysX4lvorPPyZXEPyG/j8en6yRdxzMMUq5jF6CZ4l3RjQN3ZWxzE7ZSQIR4zlgIQb8jyf3ewXjAm0g==

lib/commons-logging-1.2.jar

@@ -0,0 +1,140 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package DataSci.main;
+import java.util.*;
+import java.io.*;
+import org.apache.http.HttpResponse;
+import org.apache.http.client.HttpClient;
+import org.apache.http.client.methods.HttpPost;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.HttpClientBuilder;
+import org.apache.http.protocol.HTTP;
+import org.apache.http.util.*;
+
+
+public class JsonScript {
+	// public static JSONObject inpParms;
+	public static String apikey;
+	public static String apiurl;
+	public static String jsonBody;
+
+	/**
+	 * Read the JSON schema from the file rrsJson.json
+	 * 
+	 * @param filename It expects a fully qualified file name that contains input JSON file
+	 */		
+	public static void readJson(String filename) {
+		try {
+			File apiFile = new File(filename);
+			Scanner sc = new Scanner(apiFile);
+			jsonBody = "";
+			while (sc.hasNext()) {
+				jsonBody += sc.nextLine()+"\n";
+			}
+			sc.close();
+		}
+		catch (Exception e){
+			System.out.println(e.toString());
+		}
+	}
+
+	/**
+	 * Read the API key and API URL of Azure ML request response REST API
+	 * 
+	 * @param filename fully qualified file name that contains API key and API URL
+	 */	
+	public static void readApiInfo(String filename) {
+
+		try {
+			File apiFile = new File(filename);
+			Scanner sc = new Scanner(apiFile);
+
+			apiurl = sc.nextLine();
+			apikey = sc.nextLine();
+
+			sc.close();
+		}
+		catch (Exception e){
+			System.out.println(e.toString());
+		}
+
+	}
+
+	/**
+	 * Call REST API for retrieving prediction from Azure ML 
+	 * @return response from the REST API
+	 */	
+	public static String rrsHttpPost() {
+
+		HttpPost post;
+		HttpClient client;
+		StringEntity entity;
+
+		try {
+			// create HttpPost and HttpClient object
+			post = new HttpPost(apiurl);
+			client = HttpClientBuilder.create().build();
+
+			// setup output message by copying JSON body into 
+			// apache StringEntity object along with content type
+			entity = new StringEntity(jsonBody/*, HTTP.UTF_8*/);
+			// entity.setContentEncoding(HTTP.UTF_8);
+			entity.setContentType("text/json");
+
+			// add HTTP headers
+			post.setHeader("Accept", "text/json");
+			post.setHeader("Accept-Charset", "UTF-8");
+
+			// set Authorization header based on the API key
+			post.setHeader("Authorization", ("Bearer "+apikey));
+			post.setEntity(entity);
+
+			// Call REST API and retrieve response content
+			HttpResponse authResponse = client.execute(post);
+
+			return EntityUtils.toString(authResponse.getEntity());
+
+		}
+		catch (Exception e) {
+
+			return e.toString();
+		}
+
+	}
+
+	/**
+	 * @param args the command line arguments specifying JSON and API info file names
+	 */
+	public static void main(String[] args) {
+		// check for mandatory arguments. This program expects 2 arguments 
+		// first argument is full path with file name of JSON file and 
+		// second argument is full path with file name of API file that contains API URL and API Key of request response REST API
+		if (args.length < 2) {
+			System.out.println("Incorrect arguments");
+		}
+
+		try {
+
+			// read JSON file name
+			String jsonFile = args[0];
+			// read API file name
+			String apiFile = args[1];
+
+			// call method to read API URL and key from API file
+			readApiInfo(apiFile);
+
+			// call method to read JSON input from the JSON file
+			readJson(jsonFile);
+
+			// print the response from REST API
+			System.out.println(rrsHttpPost());
+		}
+		catch (Exception e) {
+			System.out.println(e.toString());
+		}
+	}
+
+}