Extract user utils from reports

16 files changed, 162 insertions, 63 deletions

diff --git a/build.gradle b/build.gradle
index de8c86712..8c196043a 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,7 +49,7 @@ dependencies {
     implementation "io.netty:netty-all:4.1.66.Final"
     implementation "org.slf4j:slf4j-jdk14:2.0.0-alpha6"
     implementation "com.google.inject:guice:$guiceVersion"
-    implementation "com.google.inject.extensions:guice-assistedinject:$guiceVersion"
+    implementation "com.google.inject.extensions:guice-servlet:$guiceVersion"
     implementation "org.owasp.encoder:encoder:1.2.3"
     implementation "org.glassfish:javax.json:1.1.4"
     implementation "org.eclipse.jetty:jetty-server:$jettyVersion"
diff --git a/src/main/java/org/traccar/Main.java b/src/main/java/org/traccar/Main.java
index db9892bb9..b14f22a00 100644
--- a/src/main/java/org/traccar/Main.java
+++ b/src/main/java/org/traccar/Main.java
@@ -17,6 +17,7 @@ package org.traccar;
 
 import com.google.inject.Guice;
 import com.google.inject.Injector;
+import com.google.inject.servlet.ServletModule;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.traccar.schedule.ScheduleManager;
@@ -111,7 +112,7 @@ public final class Main {
 
     public static void run(String configFile) {
         try {
-            injector = Guice.createInjector(new MainModule());
+            injector = Guice.createInjector(new MainModule(), new ServletModule());
             Context.init(configFile);
             logSystemInfo();
             LOGGER.info("Version: " + Main.class.getPackage().getImplementationVersion());
diff --git a/src/main/java/org/traccar/api/resource/PasswordResource.java b/src/main/java/org/traccar/api/resource/PasswordResource.java
index ed7131718..91d994153 100644
--- a/src/main/java/org/traccar/api/resource/PasswordResource.java
+++ b/src/main/java/org/traccar/api/resource/PasswordResource.java
@@ -51,7 +51,8 @@ public class PasswordResource extends BaseResource {
                 String token = UUID.randomUUID().toString().replaceAll("-", "");
                 user.set(PASSWORD_RESET_TOKEN, token);
                 Context.getUsersManager().updateItem(user);
-                VelocityContext velocityContext = TextTemplateFormatter.prepareContext(null);
+                VelocityContext velocityContext = TextTemplateFormatter.prepareContext(
+                        permissionsService.getServer(), user);
                 velocityContext.put("token", token);
                 NotificationMessage fullMessage =
                         TextTemplateFormatter.formatMessage(velocityContext, "passwordReset", "full");
diff --git a/src/main/java/org/traccar/api/security/PermissionsService.java b/src/main/java/org/traccar/api/security/PermissionsService.java
index 9ec3b43c1..c70414b2a 100644
--- a/src/main/java/org/traccar/api/security/PermissionsService.java
+++ b/src/main/java/org/traccar/api/security/PermissionsService.java
@@ -15,6 +15,7 @@
  */
 package org.traccar.api.security;
 
+import com.google.inject.servlet.RequestScoped;
 import org.traccar.model.BaseModel;
 import org.traccar.model.Calendar;
 import org.traccar.model.Command;
@@ -34,6 +35,7 @@ import org.traccar.storage.query.Request;
 
 import javax.inject.Inject;
 
+@RequestScoped
 public class PermissionsService {
 
     private final Storage storage;
diff --git a/src/main/java/org/traccar/database/PermissionsManager.java b/src/main/java/org/traccar/database/PermissionsManager.java
index 47941d681..e8f2380a2 100644
--- a/src/main/java/org/traccar/database/PermissionsManager.java
+++ b/src/main/java/org/traccar/database/PermissionsManager.java
@@ -412,16 +412,4 @@ public class PermissionsManager {
         return null;
     }
 
-    public Object lookupAttribute(long userId, String key, Object defaultValue) {
-        Object preference;
-        Object serverPreference = server.getAttributes().get(key);
-        Object userPreference = getUser(userId).getAttributes().get(key);
-        if (server.getForceSettings()) {
-            preference = serverPreference != null ? serverPreference : userPreference;
-        } else {
-            preference = userPreference != null ? userPreference : serverPreference;
-        }
-        return preference != null ? preference : defaultValue;
-    }
-
 }
diff --git a/src/main/java/org/traccar/helper/UserUtil.java b/src/main/java/org/traccar/helper/UserUtil.java
new file mode 100644
index 000000000..6050ad349
--- /dev/null
+++ b/src/main/java/org/traccar/helper/UserUtil.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright 2022 Anton Tananaev (anton@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.helper;
+
+import org.traccar.model.Server;
+import org.traccar.model.User;
+
+import java.util.TimeZone;
+
+public final class UserUtil {
+
+    private UserUtil() {
+    }
+
+    public static String getDistanceUnit(Server server, User user) {
+        return lookupStringAttribute(server, user, "distanceUnit", "km");
+    }
+
+    public static String getSpeedUnit(Server server, User user) {
+        return lookupStringAttribute(server, user, "speedUnit", "kn");
+    }
+
+    public static String getVolumeUnit(Server server, User user) {
+        return lookupStringAttribute(server, user, "volumeUnit", "ltr");
+    }
+
+    public static TimeZone getTimezone(Server server, User user) {
+        String timezone = lookupStringAttribute(server, user, "timezone", null);
+        return timezone != null ? TimeZone.getTimeZone(timezone) : TimeZone.getDefault();
+    }
+
+    private static String lookupStringAttribute(Server server, User user, String key, String defaultValue) {
+        String preference;
+        String serverPreference = server.getString(key);
+        String userPreference = user.getString(key);
+        if (server.getForceSettings()) {
+            preference = serverPreference != null ? serverPreference : userPreference;
+        } else {
+            preference = userPreference != null ? userPreference : serverPreference;
+        }
+        return preference != null ? preference : defaultValue;
+    }
+
+}
diff --git a/src/main/java/org/traccar/notification/NotificationFormatter.java b/src/main/java/org/traccar/notification/NotificationFormatter.java
index be90761b1..13f42a8b2 100644
--- a/src/main/java/org/traccar/notification/NotificationFormatter.java
+++ b/src/main/java/org/traccar/notification/NotificationFormatter.java
@@ -17,13 +17,14 @@
 package org.traccar.notification;
 
 import org.apache.velocity.VelocityContext;
+import org.traccar.helper.UserUtil;
 import org.traccar.model.Device;
 import org.traccar.model.Event;
 import org.traccar.model.Geofence;
 import org.traccar.model.Maintenance;
 import org.traccar.model.Position;
+import org.traccar.model.Server;
 import org.traccar.model.User;
-import org.traccar.reports.common.ReportUtils;
 import org.traccar.session.cache.CacheManager;
 
 public final class NotificationFormatter {
@@ -34,17 +35,18 @@ public final class NotificationFormatter {
     public static NotificationMessage formatMessage(
             CacheManager cacheManager, User user, Event event, Position position, String templatePath) {
 
+        Server server = cacheManager.getServer();
         Device device = cacheManager.getObject(Device.class, event.getDeviceId());
 
-        VelocityContext velocityContext = TextTemplateFormatter.prepareContext(user);
+        VelocityContext velocityContext = TextTemplateFormatter.prepareContext(server, user);
 
         velocityContext.put("device", device);
         velocityContext.put("event", event);
         if (position != null) {
             velocityContext.put("position", position);
-            velocityContext.put("speedUnit", ReportUtils.getSpeedUnit(user.getId()));
-            velocityContext.put("distanceUnit", ReportUtils.getDistanceUnit(user.getId()));
-            velocityContext.put("volumeUnit", ReportUtils.getVolumeUnit(user.getId()));
+            velocityContext.put("speedUnit", UserUtil.getSpeedUnit(server, user));
+            velocityContext.put("distanceUnit", UserUtil.getDistanceUnit(server, user));
+            velocityContext.put("volumeUnit", UserUtil.getVolumeUnit(server, user));
         }
         if (event.getGeofenceId() != 0) {
             velocityContext.put("geofence", cacheManager.getObject(Geofence.class, event.getGeofenceId()));
diff --git a/src/main/java/org/traccar/notification/TextTemplateFormatter.java b/src/main/java/org/traccar/notification/TextTemplateFormatter.java
index 469de2d4a..06375afac 100644
--- a/src/main/java/org/traccar/notification/TextTemplateFormatter.java
+++ b/src/main/java/org/traccar/notification/TextTemplateFormatter.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2021 Anton Tananaev (anton@traccar.org)
+ * Copyright 2021 - 2022 Anton Tananaev (anton@traccar.org)
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,8 +23,9 @@ import org.apache.velocity.tools.generic.NumberTool;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.traccar.Context;
+import org.traccar.helper.UserUtil;
+import org.traccar.model.Server;
 import org.traccar.model.User;
-import org.traccar.reports.common.ReportUtils;
 
 import java.io.StringWriter;
 import java.nio.charset.StandardCharsets;
@@ -38,13 +39,13 @@ public final class TextTemplateFormatter {
     private TextTemplateFormatter() {
     }
 
-    public static VelocityContext prepareContext(User user) {
+    public static VelocityContext prepareContext(Server server, User user) {
 
         VelocityContext velocityContext = new VelocityContext();
 
         if (user != null) {
             velocityContext.put("user", user);
-            velocityContext.put("timezone", ReportUtils.getTimezone(user.getId()));
+            velocityContext.put("timezone", UserUtil.getTimezone(server, user));
         }
 
         velocityContext.put("webUrl", Context.getVelocityEngine().getProperty("web.url"));
diff --git a/src/main/java/org/traccar/reports/EventsReportProvider.java b/src/main/java/org/traccar/reports/EventsReportProvider.java
index 9b4a7df2b..f0c8c31b6 100644
--- a/src/main/java/org/traccar/reports/EventsReportProvider.java
+++ b/src/main/java/org/traccar/reports/EventsReportProvider.java
@@ -28,6 +28,7 @@ import java.util.Iterator;
 
 import org.apache.poi.ss.util.WorkbookUtil;
 import org.traccar.Context;
+import org.traccar.api.security.PermissionsService;
 import org.traccar.model.Device;
 import org.traccar.model.Event;
 import org.traccar.model.Geofence;
@@ -42,10 +43,12 @@ import javax.inject.Inject;
 
 public class EventsReportProvider {
 
+    private final PermissionsService permissionsService;
     private final Storage storage;
 
     @Inject
-    public EventsReportProvider(Storage storage) {
+    public EventsReportProvider(PermissionsService permissionsService, Storage storage) {
+        this.permissionsService = permissionsService;
         this.storage = storage;
     }
 
@@ -127,7 +130,8 @@ public class EventsReportProvider {
         String templatePath = Context.getConfig().getString("report.templatesPath",
                 "templates/export/");
         try (InputStream inputStream = new FileInputStream(templatePath + "/events.xlsx")) {
-            org.jxls.common.Context jxlsContext = ReportUtils.initializeContext(userId);
+            var jxlsContext = ReportUtils.initializeContext(
+                    permissionsService.getServer(), permissionsService.getUser(userId));
             jxlsContext.putVar("devices", devicesEvents);
             jxlsContext.putVar("sheetNames", sheetNames);
             jxlsContext.putVar("geofenceNames", geofenceNames);
diff --git a/src/main/java/org/traccar/reports/RouteReportProvider.java b/src/main/java/org/traccar/reports/RouteReportProvider.java
index 4c4a41405..e20ba6885 100644
--- a/src/main/java/org/traccar/reports/RouteReportProvider.java
+++ b/src/main/java/org/traccar/reports/RouteReportProvider.java
@@ -26,6 +26,7 @@ import java.util.Date;
 
 import org.apache.poi.ss.util.WorkbookUtil;
 import org.traccar.Context;
+import org.traccar.api.security.PermissionsService;
 import org.traccar.model.Device;
 import org.traccar.model.Group;
 import org.traccar.model.Position;
@@ -33,8 +34,17 @@ import org.traccar.reports.common.ReportUtils;
 import org.traccar.reports.model.DeviceReportSection;
 import org.traccar.storage.StorageException;
 
+import javax.inject.Inject;
+
 public class RouteReportProvider {
 
+    private final PermissionsService permissionsService;
+
+    @Inject
+    public RouteReportProvider(PermissionsService permissionsService) {
+        this.permissionsService = permissionsService;
+    }
+
     public Collection<Position> getObjects(long userId, Collection<Long> deviceIds, Collection<Long> groupIds,
             Date from, Date to) throws StorageException {
         ReportUtils.checkPeriodLimit(from, to);
@@ -72,7 +82,8 @@ public class RouteReportProvider {
         String templatePath = Context.getConfig().getString("report.templatesPath",
                 "templates/export/");
         try (InputStream inputStream = new FileInputStream(templatePath + "/route.xlsx")) {
-            org.jxls.common.Context jxlsContext = ReportUtils.initializeContext(userId);
+            var jxlsContext = ReportUtils.initializeContext(
+                    permissionsService.getServer(), permissionsService.getUser(userId));
             jxlsContext.putVar("devices", devicesRoutes);
             jxlsContext.putVar("sheetNames", sheetNames);
             jxlsContext.putVar("from", from);
diff --git a/src/main/java/org/traccar/reports/StopsReportProvider.java b/src/main/java/org/traccar/reports/StopsReportProvider.java
index 58dc71d2d..8899dc42f 100644
--- a/src/main/java/org/traccar/reports/StopsReportProvider.java
+++ b/src/main/java/org/traccar/reports/StopsReportProvider.java
@@ -28,6 +28,7 @@ import java.util.Date;
 import org.apache.poi.ss.util.WorkbookUtil;
 import org.traccar.Context;
 import org.traccar.Main;
+import org.traccar.api.security.PermissionsService;
 import org.traccar.database.DeviceManager;
 import org.traccar.database.IdentityManager;
 import org.traccar.model.Device;
@@ -42,10 +43,12 @@ import javax.inject.Inject;
 
 public class StopsReportProvider {
 
+    private final PermissionsService permissionsService;
     private final Storage storage;
 
     @Inject
-    public StopsReportProvider(Storage storage) {
+    public StopsReportProvider(PermissionsService permissionsService, Storage storage) {
+        this.permissionsService = permissionsService;
         this.storage = storage;
     }
 
@@ -98,7 +101,8 @@ public class StopsReportProvider {
         String templatePath = Context.getConfig().getString("report.templatesPath",
                 "templates/export/");
         try (InputStream inputStream = new FileInputStream(templatePath + "/stops.xlsx")) {
-            org.jxls.common.Context jxlsContext = ReportUtils.initializeContext(userId);
+            var jxlsContext = ReportUtils.initializeContext(
+                    permissionsService.getServer(), permissionsService.getUser(userId));
             jxlsContext.putVar("devices", devicesStops);
             jxlsContext.putVar("sheetNames", sheetNames);
             jxlsContext.putVar("from", from);
diff --git a/src/main/java/org/traccar/reports/SummaryReportProvider.java b/src/main/java/org/traccar/reports/SummaryReportProvider.java
index a2306f3d1..c9fac4309 100644
--- a/src/main/java/org/traccar/reports/SummaryReportProvider.java
+++ b/src/main/java/org/traccar/reports/SummaryReportProvider.java
@@ -27,14 +27,25 @@ import java.util.Date;
 
 import org.jxls.util.JxlsHelper;
 import org.traccar.Context;
+import org.traccar.api.security.PermissionsService;
 import org.traccar.helper.UnitsConverter;
+import org.traccar.helper.UserUtil;
 import org.traccar.model.Position;
 import org.traccar.reports.common.ReportUtils;
 import org.traccar.reports.model.SummaryReportItem;
 import org.traccar.storage.StorageException;
 
+import javax.inject.Inject;
+
 public class SummaryReportProvider {
 
+    private final PermissionsService permissionsService;
+
+    @Inject
+    public SummaryReportProvider(PermissionsService permissionsService) {
+        this.permissionsService = permissionsService;
+    }
+
     private SummaryReportItem calculateSummaryResult(long deviceId, Collection<Position> positions) {
         SummaryReportItem result = new SummaryReportItem();
         result.setDeviceId(deviceId);
@@ -88,8 +99,9 @@ public class SummaryReportProvider {
         return result;
     }
 
-    private int getDay(long userId, Date date) {
-        Calendar calendar = Calendar.getInstance(ReportUtils.getTimezone(userId));
+    private int getDay(long userId, Date date) throws StorageException {
+        Calendar calendar = Calendar.getInstance(UserUtil.getTimezone(
+                permissionsService.getServer(), permissionsService.getUser(userId)));
         calendar.setTime(date);
         return calendar.get(Calendar.DAY_OF_MONTH);
     }
@@ -144,7 +156,8 @@ public class SummaryReportProvider {
         String templatePath = Context.getConfig().getString("report.templatesPath",
                 "templates/export/");
         try (InputStream inputStream = new FileInputStream(templatePath + "/summary.xlsx")) {
-            org.jxls.common.Context jxlsContext = ReportUtils.initializeContext(userId);
+            var jxlsContext = ReportUtils.initializeContext(
+                    permissionsService.getServer(), permissionsService.getUser(userId));
             jxlsContext.putVar("summaries", summaries);
             jxlsContext.putVar("from", from);
             jxlsContext.putVar("to", to);
diff --git a/src/main/java/org/traccar/reports/TripsReportProvider.java b/src/main/java/org/traccar/reports/TripsReportProvider.java
index 5ff31dbe2..bcd79ab25 100644
--- a/src/main/java/org/traccar/reports/TripsReportProvider.java
+++ b/src/main/java/org/traccar/reports/TripsReportProvider.java
@@ -27,6 +27,7 @@ import java.util.Date;
 import org.apache.poi.ss.util.WorkbookUtil;
 import org.traccar.Context;
 import org.traccar.Main;
+import org.traccar.api.security.PermissionsService;
 import org.traccar.database.DeviceManager;
 import org.traccar.database.IdentityManager;
 import org.traccar.model.Device;
@@ -41,10 +42,12 @@ import javax.inject.Inject;
 
 public class TripsReportProvider {
 
+    private final PermissionsService permissionsService;
     private final Storage storage;
 
     @Inject
-    public TripsReportProvider(Storage storage) {
+    public TripsReportProvider(PermissionsService permissionsService, Storage storage) {
+        this.permissionsService = permissionsService;
         this.storage = storage;
     }
 
@@ -96,7 +99,8 @@ public class TripsReportProvider {
         String templatePath = Context.getConfig().getString("report.templatesPath",
                 "templates/export/");
         try (InputStream inputStream = new FileInputStream(templatePath + "/trips.xlsx")) {
-            org.jxls.common.Context jxlsContext = ReportUtils.initializeContext(userId);
+            var jxlsContext = ReportUtils.initializeContext(
+                    permissionsService.getServer(), permissionsService.getUser(userId));
             jxlsContext.putVar("devices", devicesTrips);
             jxlsContext.putVar("sheetNames", sheetNames);
             jxlsContext.putVar("from", from);
diff --git a/src/main/java/org/traccar/reports/common/ReportUtils.java b/src/main/java/org/traccar/reports/common/ReportUtils.java
index 4bcb54899..71c49f65b 100644
--- a/src/main/java/org/traccar/reports/common/ReportUtils.java
+++ b/src/main/java/org/traccar/reports/common/ReportUtils.java
@@ -31,7 +31,9 @@ import org.traccar.database.DeviceManager;
 import org.traccar.database.IdentityManager;
 import org.traccar.handler.events.MotionEventHandler;
 import org.traccar.helper.UnitsConverter;
+import org.traccar.helper.UserUtil;
 import org.traccar.model.BaseModel;
+import org.traccar.model.Server;
 import org.traccar.model.User;
 import org.traccar.session.DeviceState;
 import org.traccar.model.Driver;
@@ -58,7 +60,6 @@ import java.util.LinkedHashSet;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
-import java.util.TimeZone;
 
 public final class ReportUtils {
 
@@ -81,23 +82,6 @@ public final class ReportUtils {
         }
     }
 
-    public static String getDistanceUnit(long userId) {
-        return (String) Context.getPermissionsManager().lookupAttribute(userId, "distanceUnit", "km");
-    }
-
-    public static String getSpeedUnit(long userId) {
-        return (String) Context.getPermissionsManager().lookupAttribute(userId, "speedUnit", "kn");
-    }
-
-    public static String getVolumeUnit(long userId) {
-        return (String) Context.getPermissionsManager().lookupAttribute(userId, "volumeUnit", "ltr");
-    }
-
-    public static TimeZone getTimezone(long userId) {
-        String timezone = (String) Context.getPermissionsManager().lookupAttribute(userId, "timezone", null);
-        return timezone != null ? TimeZone.getTimeZone(timezone) : TimeZone.getDefault();
-    }
-
     public static Collection<Long> getDeviceList(Collection<Long> deviceIds, Collection<Long> groupIds) {
         Collection<Long> result = new LinkedHashSet<>(deviceIds);
         for (long groupId : groupIds) {
@@ -158,15 +142,15 @@ public final class ReportUtils {
         return null;
     }
 
-    public static org.jxls.common.Context initializeContext(long userId) {
+    public static org.jxls.common.Context initializeContext(Server server, User user) {
         org.jxls.common.Context jxlsContext = PoiTransformer.createInitialContext();
-        jxlsContext.putVar("distanceUnit", getDistanceUnit(userId));
-        jxlsContext.putVar("speedUnit", getSpeedUnit(userId));
-        jxlsContext.putVar("volumeUnit", getVolumeUnit(userId));
+        jxlsContext.putVar("distanceUnit", UserUtil.getDistanceUnit(server, user));
+        jxlsContext.putVar("speedUnit", UserUtil.getSpeedUnit(server, user));
+        jxlsContext.putVar("volumeUnit", UserUtil.getVolumeUnit(server, user));
         jxlsContext.putVar("webUrl", Context.getVelocityEngine().getProperty("web.url"));
         jxlsContext.putVar("dateTool", new DateTool());
         jxlsContext.putVar("numberTool", new NumberTool());
-        jxlsContext.putVar("timezone", getTimezone(userId));
+        jxlsContext.putVar("timezone", UserUtil.getTimezone(server, user));
         jxlsContext.putVar("locale", Locale.getDefault());
         jxlsContext.putVar("bracketsRegex", "[\\{\\}\"]");
         return jxlsContext;
diff --git a/src/main/java/org/traccar/session/cache/CacheManager.java b/src/main/java/org/traccar/session/cache/CacheManager.java
index 6ea0f252d..586237655 100644
--- a/src/main/java/org/traccar/session/cache/CacheManager.java
+++ b/src/main/java/org/traccar/session/cache/CacheManager.java
@@ -23,6 +23,7 @@ import org.traccar.model.Geofence;
 import org.traccar.model.Maintenance;
 import org.traccar.model.Notification;
 import org.traccar.model.Position;
+import org.traccar.model.Server;
 import org.traccar.model.User;
 import org.traccar.storage.Storage;
 import org.traccar.storage.StorageException;
@@ -57,12 +58,14 @@ public class CacheManager {
     private final Map<CacheKey, CacheValue> deviceCache = new HashMap<>();
     private final Map<Long, Map<Class<? extends BaseModel>, List<Long>>> deviceLinks = new HashMap<>();
 
+    private Server server;
     private final Map<Long, Position> devicePositions = new HashMap<>();
     private final Map<Long, List<User>> notificationUsers = new HashMap<>();
 
     @Inject
     public CacheManager(Storage storage) throws StorageException {
         this.storage = storage;
+        invalidateServer();
         invalidateUsers();
     }
 
@@ -96,6 +99,15 @@ public class CacheManager {
         }
     }
 
+    public Server getServer() {
+        try {
+            lock.readLock().lock();
+            return server;
+        } finally {
+            lock.readLock().unlock();
+        }
+    }
+
     public List<User> getNotificationUsers(long notificationId) {
         try {
             lock.readLock().lock();
@@ -154,6 +166,10 @@ public class CacheManager {
         invalidate(new CacheKey(clazz1, id1), new CacheKey(clazz2, id2));
     }
 
+    private void invalidateServer() throws StorageException {
+        server = storage.getObject(Server.class, new Request(new Columns.All()));
+    }
+
     private void invalidateUsers() throws StorageException {
         Map<Long, User> users = new HashMap<>();
         storage.getObjects(User.class, new Request(new Columns.All()))
@@ -220,21 +236,29 @@ public class CacheManager {
     }
 
     private void unsafeInvalidate(CacheKey[] keys) throws StorageException {
+        boolean invalidateServer = false;
         boolean invalidateUsers = false;
         Set<Long> linkedDevices = new HashSet<>();
         for (var key : keys) {
-            if (key.classIs(User.class) || key.classIs(Notification.class)) {
-                invalidateUsers = true;
+            if (key.classIs(Server.class)) {
+                invalidateServer = true;
+            } else {
+                if (key.classIs(User.class) || key.classIs(Notification.class)) {
+                    invalidateUsers = true;
+                }
+                deviceCache.computeIfPresent(key, (k, value) -> {
+                    linkedDevices.addAll(value.getReferences());
+                    return value;
+                });
             }
-            deviceCache.computeIfPresent(key, (k, value) -> {
-                linkedDevices.addAll(value.getReferences());
-                return value;
-            });
         }
         for (long deviceId : linkedDevices) {
             unsafeRemoveDevice(deviceId);
             unsafeAddDevice(deviceId);
         }
+        if (invalidateServer) {
+            invalidateServer();
+        }
         if (invalidateUsers) {
             invalidateUsers();
         }
diff --git a/src/main/java/org/traccar/web/WebServer.java b/src/main/java/org/traccar/web/WebServer.java
index 06676fb41..f1ee8fcb2 100644
--- a/src/main/java/org/traccar/web/WebServer.java
+++ b/src/main/java/org/traccar/web/WebServer.java
@@ -15,6 +15,7 @@
  */
 package org.traccar.web;
 
+import com.google.inject.servlet.GuiceFilter;
 import org.eclipse.jetty.http.HttpCookie;
 import org.eclipse.jetty.http.HttpMethod;
 import org.eclipse.jetty.http.HttpStatus;
@@ -164,6 +165,8 @@ public class WebServer implements LifecycleObject {
     }
 
     private void initApi(Config config, ServletContextHandler servletHandler) {
+        servletHandler.addFilter(GuiceFilter.class, "/api/*", EnumSet.allOf(DispatcherType.class));
+
         servletHandler.addServlet(new ServletHolder(new AsyncSocketServlet()), "/api/socket");
         JettyWebSocketServletContainerInitializer.configure(servletHandler, null);