From fd554f89eeff6ffb3dcd80447c4284c976090e9c Mon Sep 17 00:00:00 2001
From: Marcin Chrzanowski <marcin.j.chrzanowski@gmail.com>
Date: Sat, 11 Jan 2020 20:22:15 +0100
Subject: Add message to remove old gossips

---
 .../pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java   | 13 ++++++++++---
 .../edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java |  6 ++++++
 2 files changed, 16 insertions(+), 3 deletions(-)

(limited to 'src/main')

diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java
index 175c238..ec34c7f 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java
@@ -7,6 +7,7 @@ import java.util.Map;
 import java.util.Map.Entry;
 
 import pl.edu.mimuw.cloudatlas.agent.messages.AttributesMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.CleanOldGossipsMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.GetStateMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.GossipGirlMessage;
 import pl.edu.mimuw.cloudatlas.agent.messages.HejkaMessage;
@@ -53,7 +54,7 @@ public class GossipGirl extends Module {
                 handleQuery((QueryMessage) message);
                 break;
             case CLEAN:
-                cleanOldGossips();
+                cleanOldGossips((CleanOldGossipsMessage) message);
                 break;
             default:
                 throw new InvalidMessageType("This type of message cannot be handled by GossipGirl");
@@ -99,6 +100,7 @@ public class GossipGirl extends Module {
     private void setState(StateMessage message) throws InterruptedException {
         GossipGirlState state = gossipStates.get(message.getRequestId());
         if (state != null) {
+            state.setLastAction();
             state.setState(message.getZMI(), message.getQueries());
             if (state.state == GossipGirlState.State.SEND_HEJKA) {
                 HejkaMessage hejka = new HejkaMessage(
@@ -136,6 +138,7 @@ public class GossipGirl extends Module {
     private void handleNoCoTam(NoCoTamMessage message) throws InterruptedException {
         GossipGirlState state = gossipStates.get(message.getReceiverGossipId());
         if (state != null) {
+            state.setLastAction();
             state.handleNoCoTam(message);
             sendInfo(state);
         } else {
@@ -161,6 +164,7 @@ public class GossipGirl extends Module {
     private void handleAttributes(AttributesMessage message) throws InterruptedException {
         GossipGirlState state = gossipStates.get(message.getReceiverGossipId());
         if (state != null) {
+            state.setLastAction();
             state.gotAttributes(message);
             if (state.state == GossipGirlState.State.SEND_INFO) {
                 sendInfo(state);
@@ -178,6 +182,7 @@ public class GossipGirl extends Module {
     private void handleQuery(QueryMessage message) throws InterruptedException {
         GossipGirlState state = gossipStates.get(message.getReceiverGossipId());
         if (state != null) {
+            state.setLastAction();
             state.gotQuery(message.getName());
             Map<Attribute, Entry<ValueQuery, ValueTime>> queries = new HashMap();
             queries.put(
@@ -194,11 +199,13 @@ public class GossipGirl extends Module {
         }
     }
 
-    private void cleanOldGossips() {
+    private void cleanOldGossips(CleanOldGossipsMessage message) {
         Iterator<Entry<Long, GossipGirlState>> iterator = gossipStates.entrySet().iterator();
         while (iterator.hasNext()) {
             GossipGirlState state = iterator.next().getValue();
-            // TODO: remove
+            if (state.lastAction.isLowerThan(message.getAgeThreshold()).getValue()) {
+                iterator.remove();
+            }
         }
     }
 }
diff --git a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java
index eafbcca..70d57d9 100644
--- a/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java
+++ b/src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java
@@ -36,6 +36,7 @@ public class GossipGirlState {
         FINISHED,
         ERROR
     }
+    public ValueTime lastAction;
     public PathName ourPath;
     public ValueContact theirContact;
     public long gossipId;
@@ -64,6 +65,11 @@ public class GossipGirlState {
         } else {
             state = State.APPLY_HEJKA;
         }
+        this.lastAction = ValueUtils.currentTime();
+    }
+
+    public void setLastAction() {
+        lastAction = ValueUtils.currentTime();
     }
 
     public void setState(ZMI hierarchy, Map<Attribute, Entry<ValueQuery, ValueTime>> queries) {
-- 
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