From bfd4c421004ce35a9eac307c3ac4976caa1820ae Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Magdalena=20Grodzi=C5=84ska?= <mag.grodzinska@gmail.com>
Date: Sun, 5 Jan 2020 18:00:56 +0100
Subject: UDUP with no serialization working

---
 .../mimuw/cloudatlas/agent/modules/UDUPClient.java | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/UDUPClient.java

(limited to 'src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/UDUPClient.java')

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/UDUPClient.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/UDUPClient.java
new file mode 100644
index 0000000..93f2898
--- /dev/null
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/UDUPClient.java
@@ -0,0 +1,89 @@
+package pl.edu.mimuw.cloudatlas.agent.modules;
+
+import pl.edu.mimuw.cloudatlas.agent.messages.TimerSchedulerMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.UDUPMessage;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.net.*;
+
+public class UDUPClient {
+    private UDUP udp;
+    private int serverPort;
+    private int timeout;
+    private int retriesCount;
+    private DatagramSocket socket;
+    private int bufsize;
+
+    UDUPClient(UDUP udp, int serverPort, int timeout, int retriesCount, int bufferSize) throws SocketException, UnknownHostException {
+        this.udp = udp;
+        this.serverPort = serverPort;
+        this.timeout = timeout;
+        this.retriesCount = retriesCount;
+        this.socket = new DatagramSocket();
+        this.bufsize = bufferSize;
+    }
+
+    // TODO make sure that retry count in message is updated correctly
+    public void sendMessage(UDUPMessage msg) throws InterruptedException {
+        String messageId = msg.getMessageId();
+
+        if (msg.getRetry() >= this.retriesCount) {
+            this.udp.removeConversation(msg.getConversationId());
+        } else {
+            this.udp.addConversation(msg);
+            try {
+                sendUDP(msg);
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+
+            msg.setRetry(msg.getRetry() + 1);
+
+            // TODO add sending message to timer with retry
+            /*
+            this.udp.executor.passMessage(new TimerSchedulerMessage(
+                    "",
+                    0,
+                    "",
+                    this.timeout,
+                    System.currentTimeMillis() / 1000L,
+                    new TimerScheduledTask() {
+                        @Override
+                        public void run() {
+                            try {
+                                this.sendMessage(msg);
+                            } catch (InterruptedException e) {
+                                e.printStackTrace();
+                            }
+                        }
+                    }));
+
+             */
+        }
+    }
+
+    private void sendUDP(UDUPMessage msg) throws IOException {
+        int offset = 0;
+        int outputSize;
+        byte[] buf = new byte[bufsize];
+        ByteArrayOutputStream output = new ByteArrayOutputStream();
+
+        this.udp.serialize(output, msg);
+        outputSize = output.size();
+
+        do {
+            output.write(buf, offset, bufsize);
+            System.out.println("UDP sends message: " + buf);
+            outputSize =- bufsize;
+            offset += bufsize;
+            DatagramPacket packet = new DatagramPacket(buf, buf.length, msg.getContact().getAddress(), this.serverPort);
+            this.socket.send(packet);
+        } while (outputSize > bufsize);
+    }
+
+    void close() {
+        this.socket.close();
+    }
+
+}
-- 
cgit v1.2.3