Adapter design pattern - cloud matrix example

premaseem · premaseem · commit 2cd8809a94d3 · 2018-02-12T23:06:54.000-06:00
This example creates the adapter layer to operate various services from different clouds.
diff --git a/patternBonus/src/com/premaseem/Client.java b/patternBonus/src/com/premaseem/Client.java
diff --git a/patternBonus/src/com/premaseem/adapterPattern/Adapter.java b/patternBonus/src/com/premaseem/adapterPattern/Adapter.java
@@ -0,0 +1,66 @@
+package com.premaseem.adapterPattern;
+
+public interface Adapter {
+
+}
+
+class AmazonCloudAdapter implements ClientBrokerInterface {
+	AmazonCloudProvider adapteeProvider = new AmazonCloudProvider();
+
+	@Override
+	public void start(String id) {
+		adapteeProvider.startVM(id);
+
+	}
+
+	@Override
+	public void stop(String id) {
+		adapteeProvider.stopVM(id);
+	}
+
+	@Override
+	public void restart(String id) {
+		adapteeProvider.rebootVM(id);
+	}
+}
+
+class AzureCloudAdapter implements ClientBrokerInterface {
+	AzureCloudProvider adapteeProvider = new AzureCloudProvider();
+
+	@Override
+	public void start(String id) {
+		adapteeProvider.bootVM(id, "");
+
+	}
+
+	@Override
+	public void stop(String id) {
+		adapteeProvider.terminateVM(id, "");
+	}
+
+	@Override
+	public void restart(String id) {
+		adapteeProvider.rebootVM(id);
+	}
+}
+
+class GoogleCloudAdapter implements ClientBrokerInterface {
+	GoogleCloudProvider adapteeProvider = new GoogleCloudProvider();
+
+	@Override
+	public void start(String id) {
+		adapteeProvider.startVM(id);
+
+	}
+
+	@Override
+	public void stop(String id) {
+		adapteeProvider.shutdownVM(id);
+	}
+
+	@Override
+	public void restart(String id) {
+		adapteeProvider.shutdownVM(id);
+		adapteeProvider.startVM(id);
+	}
+}
diff --git a/patternBonus/src/com/premaseem/adapterPattern/ClientBrokerInterface.java b/patternBonus/src/com/premaseem/adapterPattern/ClientBrokerInterface.java
@@ -0,0 +1,11 @@
+package com.premaseem.adapterPattern;
+
+public interface ClientBrokerInterface {
+/*
+ * This method will help you to start your vm 	
+ */
+	void start(String id);
+	void stop(String id);
+	void restart(String id);
+
+}
diff --git a/patternBonus/src/com/premaseem/adapterPattern/ClientForCloudAdapter.java b/patternBonus/src/com/premaseem/adapterPattern/ClientForCloudAdapter.java
@@ -0,0 +1,61 @@
+package com.premaseem.adapterPattern;
+
+import java.util.Scanner;
+
+public class ClientForCloudAdapter {
+
+	public static void main(String[] args) {
+		Scanner scan = new Scanner(System.in);
+		int repeatRunFlag = 1;
+		
+
+			System.out.println("This is the Cloud Broker POC which uses command pattern for provisioning for your resources on different cloud provider ");
+
+			System.out.println("Please pick the provider to create VDC (virtual data Center) ");
+			System.out.println(" Press 1 for Amazon Cloud");
+			System.out.println(" Press 2 for Azure Cloud");
+			System.out.println(" Press 3 for Google Cloud ");
+			int vdcType = scan.nextInt();
+
+			ClientBrokerInterface clientinterface;
+
+			switch (vdcType) {
+			case 1:
+				clientinterface = new AmazonCloudAdapter();
+				break;
+			case 2:
+				clientinterface = new AzureCloudAdapter();
+				break;
+			case 3:
+				clientinterface = new GoogleCloudAdapter();
+				break;
+				default :
+					clientinterface = new AmazonCloudAdapter();
+			}
+
+			
+			while (repeatRunFlag == 1) {
+			System.out.println(" What do you want to do ");
+			System.out.println(" 1. Start a VM ");
+			System.out.println(" 2. Stop a VM ");
+			System.out.println(" 3. Reboot a VM");
+
+			int taskType = scan.nextInt();
+			switch (taskType) {
+			case 1:
+				clientinterface.start("");
+				break;
+			case 2:clientinterface.stop("");
+				break;
+			case 3:clientinterface.restart("");
+				break;
+			}
+			System.out.println("Do you want to add more tasks before provisioning 1-yes / 0-No and trigger provisioning ");
+			try {
+				repeatRunFlag = scan.nextInt();
+			} catch (Exception e) {
+				repeatRunFlag = 0;
+			}
+		}
+	}
+}
diff --git a/patternBonus/src/com/premaseem/adapterPattern/Provider.java b/patternBonus/src/com/premaseem/adapterPattern/Provider.java
@@ -0,0 +1,45 @@
+package com.premaseem.adapterPattern;
+
+ class AmazonCloudProvider {
+	 public void startVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " start  ");
+	 }
+	 
+	 public void stopVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " stop  ");
+	 }
+	 
+	 public void rebootVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " reboot  ");
+	 }
+ }
+ 
+ class AzureCloudProvider {
+	 
+	 public void bootVM(String id, String vdc){
+		 System.out.println(this.getClass().getSimpleName() + " start  ");
+	 }
+	 
+	 public void terminateVM(String id, String vdc){
+		 System.out.println(this.getClass().getSimpleName() + " stop  ");
+	 }
+	 
+	 public void rebootVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " reboot  ");
+	 }
+ }
+ 
+ class GoogleCloudProvider {
+	 public void startVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " start  ");
+	 }
+	 
+	 public void shutdownVM(String id){
+		 System.out.println(this.getClass().getSimpleName() + " stop  ");
+	 }
+ }
+
+public interface Provider {
+
+}
+ 
