Handling unknown events

pom.xml

@@ -6,7 +6,7 @@
     <groupId>com.github.yvasyliev</groupId>
     <artifactId>java-vk-bots-longpoll-api</artifactId>
     <packaging>jar</packaging>
-    <version>4.1.4</version>
+    <version>4.1.5</version>
     <name>Java VK Bots Long Poll API</name>
     <description>A Java library to create VK bots using Bots Long Poll API</description>
     <url>https://github.com/yvasyliev/java-vk-bots-long-poll-api</url>

src/main/java/api/longpoll/bots/VkBot.java

@@ -244,6 +244,10 @@ public void handle(List<Update> updates) {
                     onPollVoteNew((PollVoteNew) update.getObject());
                     break;
 
+                case UNKNOWN:
+                    onUnknownObject((Update.UnknownObject) update.getObject());
+                    break;
+
                 default:
                     LOGGER.warn("No update handler found update updateType: {}", updateType);
                     break;
@@ -610,4 +614,12 @@ public void onMessageDeny(MessageDeny messageDeny) {
      */
     public void onPollVoteNew(PollVoteNew pollVoteNew) {
     }
+
+    /**
+     * Handles all unknown events.
+     *
+     * @param unknownObject unknown event.
+     */
+    public void onUnknownObject(Update.UnknownObject unknownObject) {
+    }
 }

src/main/java/api/longpoll/bots/adapters/deserializers/UpdateDeserializer.java

@@ -32,7 +32,6 @@
 import api.longpoll.bots.model.objects.media.Audio;
 import api.longpoll.bots.model.objects.media.Photo;
 import api.longpoll.bots.model.objects.media.Video;
-import com.google.gson.Gson;
 import com.google.gson.JsonDeserializationContext;
 import com.google.gson.JsonDeserializer;
 import com.google.gson.JsonElement;
@@ -45,11 +44,6 @@
  * Deserializes JSON objects to {@link Update}.
  */
 public class UpdateDeserializer implements JsonDeserializer<Update> {
-    /**
-     * {@link Gson} object.
-     */
-    private final Gson gson = new Gson();
-
     @Override
     public final Update deserialize(JsonElement jsonElement, Type type, JsonDeserializationContext context) throws JsonParseException {
         JsonObject jsonUpdate = jsonElement.getAsJsonObject();
@@ -58,12 +52,16 @@ public final Update deserialize(JsonElement jsonElement, Type type, JsonDeserial
         update.setType(context.deserialize(jsonUpdate.get("type"), Update.Type.class));
 
         if (update.getType() == null) {
-            throw new IllegalArgumentException("There is no mapping for event '" + jsonUpdate.get("type") + "'. JSON: " + gson.toJson(jsonElement));
+            update.setType(Update.Type.UNKNOWN);
+            Update.UnknownObject unknownObject = new Update.UnknownObject();
+            unknownObject.setData(jsonUpdate.get("object"));
+            update.setObject(unknownObject);
+        } else {
+            update.setObject(context.deserialize(jsonUpdate.get("object"), getObjectClass(update.getType())));
         }
 
         update.setGroupId(jsonUpdate.get("group_id").getAsInt());
         update.setEventId(jsonUpdate.get("event_id").getAsString());
-        update.setObject(context.deserialize(jsonUpdate.get("object"), getObjectClass(update.getType())));
         return update;
     }
 

src/main/java/api/longpoll/bots/model/events/Update.java

@@ -1,6 +1,7 @@
 package api.longpoll.bots.model.events;
 
 import api.longpoll.bots.adapters.deserializers.UpdateDeserializer;
+import com.google.gson.JsonElement;
 import com.google.gson.annotations.JsonAdapter;
 import com.google.gson.annotations.SerializedName;
 
@@ -112,6 +113,7 @@ public enum Type {
         @SerializedName("photo_comment_restore") PHOTO_COMMENT_RESTORE,
         @SerializedName("photo_new") PHOTO_NEW,
         @SerializedName("poll_vote_new") POLL_VOTE_NEW,
+        UNKNOWN,
         @SerializedName("user_block") USER_BLOCK,
         @SerializedName("user_unblock") USER_UNBLOCK,
         @SerializedName("video_comment_delete") VIDEO_COMMENT_DELETE,
@@ -133,4 +135,29 @@ public enum Type {
      */
     public interface Object {
     }
+
+    /**
+     * Default object for all unknown events.
+     */
+    public static class UnknownObject implements Object {
+        /**
+         * Object data.
+         */
+        private JsonElement data;
+
+        public JsonElement getData() {
+            return data;
+        }
+
+        public void setData(JsonElement data) {
+            this.data = data;
+        }
+
+        @Override
+        public String toString() {
+            return "UnknownObject{" +
+                    "data=" + data +
+                    '}';
+        }
+    }
 }