Make sure only a single request is sent to the WoT plugin at a time.

diff --git a/src/main/java/net/pterodactylus/sone/freenet/wot/WebOfTrustConnector.java b/src/main/java/net/pterodactylus/sone/freenet/wot/WebOfTrustConnector.java
index 1720bec..b6d68d3 100644 (file)
--- a/src/main/java/net/pterodactylus/sone/freenet/wot/WebOfTrustConnector.java
+++ b/src/main/java/net/pterodactylus/sone/freenet/wot/WebOfTrustConnector.java
@@ -17,7 +17,6 @@
 
 package net.pterodactylus.sone.freenet.wot;
 
-import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Map;
@@ -48,8 +47,8 @@ public class WebOfTrustConnector implements ConnectorListener {
        /** A random connection identifier. */
        private static final String PLUGIN_CONNECTION_IDENTIFIER = "Sone-WoT-Connector-" + Math.abs(Math.random());
 
-       /** The current replies that we wait for. */
-       private final Map<String, Reply> replies = Collections.synchronizedMap(new HashMap<String, Reply>());
+       /** The current reply. */
+       private Reply reply;
 
        /** The plugin connector. */
        private final PluginConnector pluginConnector;
@@ -78,7 +77,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if the own identities can not be loaded
         */
        public Set<OwnIdentity> loadAllOwnIdentities() throws WebOfTrustException {
-               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetOwnIdentities").get(), "OwnIdentities");
+               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetOwnIdentities").get());
                SimpleFieldSet fields = reply.getFields();
                int ownIdentityCounter = -1;
                Set<OwnIdentity> ownIdentities = new HashSet<OwnIdentity>();
@@ -125,7 +124,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public Set<Identity> loadTrustedIdentities(OwnIdentity ownIdentity, String context) throws PluginException {
-               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetIdentitiesByScore").put("TreeOwner", ownIdentity.getId()).put("Selection", "+").put("Context", (context == null) ? "" : context).get(), "Identities");
+               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetIdentitiesByScore").put("TreeOwner", ownIdentity.getId()).put("Selection", "+").put("Context", (context == null) ? "" : context).get());
                SimpleFieldSet fields = reply.getFields();
                Set<Identity> identities = new HashSet<Identity>();
                int identityCounter = -1;
@@ -155,7 +154,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public void addContext(OwnIdentity ownIdentity, String context) throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "AddContext").put("Identity", ownIdentity.getId()).put("Context", context).get(), "ContextAdded");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "AddContext").put("Identity", ownIdentity.getId()).put("Context", context).get());
        }
 
        /**
@@ -169,7 +168,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public void removeContext(OwnIdentity ownIdentity, String context) throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveContext").put("Identity", ownIdentity.getId()).put("Context", context).get(), "ContextRemoved");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveContext").put("Identity", ownIdentity.getId()).put("Context", context).get());
        }
 
        /**
@@ -184,7 +183,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public String getProperty(Identity identity, String name) throws PluginException {
-               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetProperty").put("Identity", identity.getId()).put("Property", name).get(), "PropertyValue");
+               Reply reply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetProperty").put("Identity", identity.getId()).put("Property", name).get());
                return reply.getFields().get("Property");
        }
 
@@ -201,7 +200,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public void setProperty(OwnIdentity ownIdentity, String name, String value) throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "SetProperty").put("Identity", ownIdentity.getId()).put("Property", name).put("Value", value).get(), "PropertyAdded");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "SetProperty").put("Identity", ownIdentity.getId()).put("Property", name).put("Value", value).get());
        }
 
        /**
@@ -215,7 +214,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public void removeProperty(OwnIdentity ownIdentity, String name) throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveProperty").put("Identity", ownIdentity.getId()).put("Property", name).get(), "PropertyRemoved");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveProperty").put("Identity", ownIdentity.getId()).put("Property", name).get());
        }
 
        /**
@@ -231,7 +230,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public Trust getTrust(OwnIdentity ownIdentity, Identity identity) throws PluginException {
-               Reply getTrustReply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetIdentity").put("TreeOwner", ownIdentity.getId()).put("Identity", identity.getId()).get(), "Identity");
+               Reply getTrustReply = performRequest(SimpleFieldSetConstructor.create().put("Message", "GetIdentity").put("TreeOwner", ownIdentity.getId()).put("Identity", identity.getId()).get());
                String trust = getTrustReply.getFields().get("Trust");
                String score = getTrustReply.getFields().get("Score");
                String rank = getTrustReply.getFields().get("Rank");
@@ -267,7 +266,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occured talking to the Web of Trust plugin
         */
        public void setTrust(OwnIdentity ownIdentity, Identity identity, int trust, String comment) throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "SetTrust").put("Truster", ownIdentity.getId()).put("Trustee", identity.getId()).put("Value", String.valueOf(trust)).put("Comment", comment).get(), "TrustSet");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "SetTrust").put("Truster", ownIdentity.getId()).put("Trustee", identity.getId()).put("Value", String.valueOf(trust)).put("Comment", comment).get());
        }
 
        /**
@@ -282,7 +281,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if an error occurs
         */
        public void removeTrust(OwnIdentity ownIdentity, Identity identity) throws WebOfTrustException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveTrust").put("Truster", ownIdentity.getId()).put("Trustee", identity.getId()).get(), "TrustRemoved");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "RemoveTrust").put("Truster", ownIdentity.getId()).put("Trustee", identity.getId()).get());
        }
 
        /**
@@ -293,7 +292,7 @@ public class WebOfTrustConnector implements ConnectorListener {
         *             if the plugin is not loaded
         */
        public void ping() throws PluginException {
-               performRequest(SimpleFieldSetConstructor.create().put("Message", "Ping").get(), "Pong");
+               performRequest(SimpleFieldSetConstructor.create().put("Message", "Ping").get());
        }
 
        //
@@ -351,14 +350,12 @@ public class WebOfTrustConnector implements ConnectorListener {
         *
         * @param fields
         *            The fields of the message
-        * @param targetMessages
-        *            The messages of the reply to wait for
         * @return The reply message
         * @throws PluginException
         *             if the request could not be sent
         */
-       private Reply performRequest(SimpleFieldSet fields, String... targetMessages) throws PluginException {
-               return performRequest(fields, null, targetMessages);
+       private Reply performRequest(SimpleFieldSet fields) throws PluginException {
+               return performRequest(fields, null);
        }
 
        /**
@@ -369,43 +366,24 @@ public class WebOfTrustConnector implements ConnectorListener {
         *            The fields of the message
         * @param data
         *            The payload of the message
-        * @param targetMessages
-        *            The messages of the reply to wait for
         * @return The reply message
         * @throws PluginException
         *             if the request could not be sent
         */
-       private Reply performRequest(SimpleFieldSet fields, Bucket data, String... targetMessages) throws PluginException {
-               @SuppressWarnings("synthetic-access")
-               Reply reply = new Reply();
-               for (String targetMessage : targetMessages) {
-                       replies.put(targetMessage, reply);
-               }
-               replies.put("Error", reply);
+       private synchronized Reply performRequest(SimpleFieldSet fields, Bucket data) throws PluginException {
+               reply = new Reply();
+               logger.log(Level.FINE, "Sending FCP Request: " + fields.get("Message"));
                synchronized (reply) {
                        pluginConnector.sendRequest(WOT_PLUGIN_NAME, PLUGIN_CONNECTION_IDENTIFIER, fields, data);
                        try {
-                               long now = System.currentTimeMillis();
-                               while ((reply.getFields() == null) && ((System.currentTimeMillis() - now) < 60000)) {
-                                       reply.wait(60000 - (System.currentTimeMillis() - now));
-                               }
-                               if (reply.getFields() == null) {
-                                       for (String targetMessage : targetMessages) {
-                                               replies.remove(targetMessage);
-                                       }
-                                       replies.remove("Error");
-                                       throw new PluginException("Timeout waiting for " + targetMessages[0] + "!");
-                               }
+                               reply.wait();
                        } catch (InterruptedException ie1) {
-                               logger.log(Level.WARNING, "Got interrupted while waiting for reply on " + targetMessages[0] + ".", ie1);
+                               logger.log(Level.WARNING, "Got interrupted while waiting for reply on " + fields.get("Message") + ".", ie1);
                        }
                }
-               for (String targetMessage : targetMessages) {
-                       replies.remove(targetMessage);
-               }
-               replies.remove("Error");
-               if ((reply.getFields() != null) && reply.getFields().get("Message").equals("Error")) {
-                       throw new PluginException("Could not perform request for " + targetMessages[0]);
+               logger.log(Level.FINEST, "Received FCP Response for %s: %s", new Object[] { fields.get("Message"), (reply.getFields() != null) ? reply.getFields().get("Message") : null });
+               if ((reply.getFields() == null) || "Error".equals(reply.getFields().get("Message"))) {
+                       throw new PluginException("Could not perform request for " + fields.get("Message"));
                }
                return reply;
        }
@@ -421,11 +399,6 @@ public class WebOfTrustConnector implements ConnectorListener {
        public void receivedReply(PluginConnector pluginConnector, SimpleFieldSet fields, Bucket data) {
                String messageName = fields.get("Message");
                logger.log(Level.FINEST, "Received Reply from Plugin: " + messageName);
-               Reply reply = replies.remove(messageName);
-               if (reply == null) {
-                       logger.log(Level.FINE, "Not waiting for a “%s” message.", messageName);
-                       return;
-               }
                synchronized (reply) {
                        reply.setFields(fields);
                        reply.setData(data);