Merge pull request #3388 from Abyss777/optimize_users

Move users management to separate manager

1 files changed, 83 insertions, 0 deletions

diff --git a/src/org/traccar/database/UsersManager.java b/src/org/traccar/database/UsersManager.java
new file mode 100644
index 000000000..3c9c8b280
--- /dev/null
+++ b/src/org/traccar/database/UsersManager.java
@@ -0,0 +1,83 @@
+/*
+ * Copyright 2017 Anton Tananaev (anton@traccar.org)
+ * Copyright 2017 Andrey Kunitsyn (andrey@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.database;
+
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+
+import org.traccar.model.BaseModel;
+import org.traccar.model.User;
+
+public class UsersManager extends SimpleObjectManager {
+
+    private Map<String, Long> usersTokens;
+
+    public UsersManager(DataManager dataManager) {
+        super(dataManager, User.class);
+    }
+
+    private void putToken(User user) {
+        if (usersTokens == null) {
+            usersTokens = new ConcurrentHashMap<>();
+        }
+        if (user.getToken() != null) {
+            usersTokens.put(user.getToken(), user.getId());
+        }
+    }
+
+    @Override
+    protected void addNewItem(BaseModel item) {
+        super.addNewItem(item);
+        putToken((User) item);
+    }
+
+    @Override
+    protected void updateCachedItem(BaseModel item) {
+        User user = (User) item;
+        User cachedUser = (User) getById(item.getId());
+        super.updateCachedItem(item);
+        if (user.getToken() != null) {
+            usersTokens.put(user.getToken(), user.getId());
+        }
+        if (cachedUser.getToken() != null && !cachedUser.getToken().equals(user.getToken())) {
+            usersTokens.remove(cachedUser.getToken());
+        }
+    }
+
+    @Override
+    protected void removeCachedItem(long userId) {
+        User cachedUser = (User) getById(userId);
+        if (cachedUser != null) {
+            String userToken = cachedUser.getToken();
+            super.removeCachedItem(userId);
+            if (userToken != null) {
+                usersTokens.remove(userToken);
+            }
+        }
+    }
+
+    @Override
+    public Set<Long> getManagedItems(long userId) {
+        return getUserItems(userId);
+    }
+
+    public User getUserByToken(String token) {
+        return (User) getById(usersTokens.get(token));
+    }
+
+}