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-rw-r--r--src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirl.java42
-rw-r--r--src/main/java/pl/edu/mimuw/cloudatlas/agent/modules/GossipGirlState.java114
2 files changed, 139 insertions, 17 deletions
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 73aef8b..e7bd227 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
@@ -1,5 +1,6 @@
package pl.edu.mimuw.cloudatlas.agent.modules;
+import java.util.AbstractMap.SimpleImmutableEntry;
import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
@@ -14,6 +15,8 @@ import pl.edu.mimuw.cloudatlas.agent.messages.QueryMessage;
import pl.edu.mimuw.cloudatlas.agent.messages.ResponseMessage;
import pl.edu.mimuw.cloudatlas.agent.messages.StateMessage;
import pl.edu.mimuw.cloudatlas.agent.messages.UDUPMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.UpdateAttributesMessage;
+import pl.edu.mimuw.cloudatlas.agent.messages.UpdateQueriesMessage;
import pl.edu.mimuw.cloudatlas.model.Attribute;
import pl.edu.mimuw.cloudatlas.model.AttributesMap;
import pl.edu.mimuw.cloudatlas.model.PathName;
@@ -38,6 +41,12 @@ public class GossipGirl extends Module {
case NO_CO_TAM:
handleNoCoTam((NoCoTamMessage) message);
break;
+ case ATTRIBUTES:
+ handleAttributes((AttributesMessage) message);
+ break;
+ case QUERY:
+ handleQuery((QueryMessage) message);
+ break;
default:
throw new InvalidMessageType("This type of message cannot be handled by GossipGirl");
}
@@ -103,4 +112,37 @@ public class GossipGirl extends Module {
System.out.println("ERROR: GossipGirl got state for a nonexistent gossip");
}
}
+
+ private void handleAttributes(AttributesMessage message) throws InterruptedException {
+ GossipGirlState state = gossipStates.get(message.getReceiverGossipId());
+ if (state != null) {
+ state.gotAttributesFor(message.getPath());
+ UpdateAttributesMessage updateMessage = new UpdateAttributesMessage("", 0, message.getPath().toString(), message.getAttributes());
+ sendMessage(updateMessage);
+ if (state.state == GossipGirlState.State.FINISHED) {
+ gossipStates.remove(message.getReceiverGossipId());
+ }
+ } else {
+ System.out.println("ERROR: GossipGirl got attributes for a nonexistent gossip");
+ }
+ }
+
+ private void handleQuery(QueryMessage message) throws InterruptedException {
+ GossipGirlState state = gossipStates.get(message.getReceiverGossipId());
+ if (state != null) {
+ state.gotQuery(message.getName());
+ Map<Attribute, Entry<ValueQuery, ValueTime>> queries = new HashMap();
+ queries.put(
+ message.getName(),
+ new SimpleImmutableEntry(message.getQuery(), state.getTheirQueryTimestamp(message.getName()))
+ );
+ UpdateQueriesMessage updateMessage = new UpdateQueriesMessage("", 0, queries);
+ sendMessage(updateMessage);
+ if (state.state == GossipGirlState.State.FINISHED) {
+ gossipStates.remove(message.getReceiverGossipId());
+ }
+ } else {
+ System.out.println("ERROR: GossipGirl got query for a nonexistent gossip");
+ }
+ }
}
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 df17957..8b0711e 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
@@ -2,11 +2,13 @@ package pl.edu.mimuw.cloudatlas.agent.modules;
import java.util.AbstractMap.SimpleImmutableEntry;
import java.util.HashMap;
+import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
+import java.util.Set;
import pl.edu.mimuw.cloudatlas.agent.messages.NoCoTamMessage;
import pl.edu.mimuw.cloudatlas.model.Attribute;
@@ -26,6 +28,7 @@ public class GossipGirlState {
WAIT_FOR_NO_CO_TAM,
WAIT_FOR_FIRST_INFO,
WAIT_FOR_INFO,
+ FINISHED,
ERROR
}
public PathName ourPath;
@@ -42,6 +45,10 @@ public class GossipGirlState {
public ValueTime noCoTamSendReceiveTimestamp;
private Map<PathName, ValueTime> theirZoneTimestamps;
private Map<Attribute, ValueTime> theirQueryTimestamps;
+ private List<PathName> zonesToSend;
+ private List<Attribute> queriesToSend;
+ private Set<PathName> waitingForZones;
+ private Set<Attribute> waitingForQueries;
public GossipGirlState(long gossipId, PathName ourPath, ValueContact theirContact, boolean initiating) {
this.gossipId = gossipId;
@@ -91,6 +98,9 @@ public class GossipGirlState {
theirQueryTimestamps = message.getQueryTimestamps();
hejkaSendTimestamp = message.getHejkaSendTimestamp();
hejkaReceiveTimestamp = message.getHejkaReceiveTimestamp();
+ setZonesToSend();
+ setQueriesToSend();
+ setWaitingFor();
state = State.SEND_INFO;
break;
default:
@@ -99,6 +109,25 @@ public class GossipGirlState {
}
}
+ private void setWaitingFor() {
+ setWaitingForZones();
+ setWaitingForQueries();
+ }
+
+ private void setWaitingForZones() {
+ waitingForZones = new HashSet(theirZoneTimestamps.keySet());
+ for (PathName path : zonesToSend) {
+ waitingForZones.remove(path);
+ }
+ }
+
+ private void setWaitingForQueries() {
+ waitingForQueries = new HashSet(theirQueryTimestamps.keySet());
+ for (Attribute name : queriesToSend) {
+ waitingForQueries.remove(name);
+ }
+ }
+
public Map<PathName, ValueTime> getZoneTimestampsToSend() {
Map<PathName, ValueTime> timestamps = new HashMap();
collectZoneTimestamps(timestamps, hierarchy, theirContact.getName());
@@ -114,35 +143,48 @@ public class GossipGirlState {
return queryTimestamps;
}
- public List<ZMI> getZMIsToSend() {
- List<ZMI> zmis = new LinkedList();
+ public void setZonesToSend() {
+ zonesToSend = new LinkedList();
for (Entry<PathName, ValueTime> timestampedPath : getZoneTimestampsToSend().entrySet()) {
ValueTime theirTimestamp = theirZoneTimestamps.get(timestampedPath.getKey());
if (theirTimestamp == null || ValueUtils.valueLower(theirTimestamp, timestampedPath.getValue())) {
- System.out.println("going to send " + timestampedPath.getKey().toString());
- try {
- zmis.add(hierarchy.findDescendant(timestampedPath.getKey()));
- } catch (ZMI.NoSuchZoneException e) {
- System.out.println("ERROR: didn't find a zone we wanted to send in getZMIsToSend");
- }
+ zonesToSend.add(timestampedPath.getKey());
}
}
- return zmis;
}
- public List<Entry<Attribute, ValueQuery>> getQueriesToSend() {
- List<Entry<Attribute, ValueQuery>> queryList = new LinkedList();
+ public void setQueriesToSend() {
+ queriesToSend = new LinkedList();
for (Entry<Attribute, ValueTime> timestampedQuery : getQueryTimestampsToSend().entrySet()) {
ValueTime theirTimestamp = theirQueryTimestamps.get(timestampedQuery.getKey());
if (theirTimestamp == null || ValueUtils.valueLower(theirTimestamp, timestampedQuery.getValue())) {
- queryList.add(
- new SimpleImmutableEntry(
- timestampedQuery.getKey(),
- queries.get(timestampedQuery.getKey()).getKey()
- )
- );
+ queriesToSend.add(timestampedQuery.getKey());
}
}
+ }
+
+ public List<ZMI> getZMIsToSend() {
+ List<ZMI> zmis = new LinkedList();
+ for (PathName path : zonesToSend) {
+ try {
+ zmis.add(hierarchy.findDescendant(path));
+ } catch (ZMI.NoSuchZoneException e) {
+ System.out.println("ERROR: didn't find a zone we wanted to send in getZMIsToSend");
+ }
+ }
+ return zmis;
+ }
+
+ public List<Entry<Attribute, ValueQuery>> getQueriesToSend() {
+ List<Entry<Attribute, ValueQuery>> queryList = new LinkedList();
+ for (Attribute name : queriesToSend) {
+ queryList.add(
+ new SimpleImmutableEntry(
+ name,
+ queries.get(name).getKey()
+ )
+ );
+ }
return queryList;
}
@@ -194,4 +236,42 @@ public class GossipGirlState {
state = State.ERROR;
}
}
+
+ public void gotAttributesFor(PathName path) {
+ switch (state) {
+ case WAIT_FOR_INFO:
+ if (!waitingForZones.remove(path)) {
+ System.out.println("DEBUG: got zone attributes we weren't expecting");
+ }
+ if (waitingForZones.isEmpty() && waitingForQueries.isEmpty()) {
+ System.out.println("INFO: done waiting for info");
+ state = state.FINISHED;
+ }
+ break;
+ default:
+ System.out.println("ERROR: got attributes when not expected");
+ state = State.ERROR;
+ }
+ }
+
+ public void gotQuery(Attribute name) {
+ switch (state) {
+ case WAIT_FOR_INFO:
+ if (!waitingForQueries.remove(name)) {
+ System.out.println("DEBUG: got query we weren't expecting");
+ }
+ if (waitingForZones.isEmpty() && waitingForQueries.isEmpty()) {
+ System.out.println("INFO: done waiting for info");
+ state = state.FINISHED;
+ }
+ break;
+ default:
+ System.out.println("ERROR: got query when not expected");
+ state = State.ERROR;
+ }
+ }
+
+ public ValueTime getTheirQueryTimestamp(Attribute name) {
+ return theirQueryTimestamps.get(name);
+ }
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 21:37:51 +0000