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authorAnton Tananaev <anton.tananaev@gmail.com>2016-07-16 12:33:32 +1200
committerGitHub <noreply@github.com>2016-07-16 12:33:32 +1200
commit6aa4a84c9ef97f5d7980e71cf524a445e87de714 (patch)
treea3e90f40f0c42cc59a6654965ff3dcf37d8d99cb /src/org/traccar/database/DeviceManager.java
parent6fefd48ab48a2382a9a7bc07e168b48a1ce8bc40 (diff)
parentd71210f1f408c757d4fe3da07829bbc3362a7e93 (diff)
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Merge pull request #2116 from Abyss777/device_manager_final
Move code related to devices to DeviceManager
Diffstat (limited to 'src/org/traccar/database/DeviceManager.java')
-rw-r--r--src/org/traccar/database/DeviceManager.java261
1 files changed, 261 insertions, 0 deletions
diff --git a/src/org/traccar/database/DeviceManager.java b/src/org/traccar/database/DeviceManager.java
new file mode 100644
index 000000000..70df1cc1a
--- /dev/null
+++ b/src/org/traccar/database/DeviceManager.java
@@ -0,0 +1,261 @@
+package org.traccar.database;
+
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+
+import org.traccar.Config;
+import org.traccar.Context;
+import org.traccar.helper.Log;
+import org.traccar.model.Device;
+import org.traccar.model.Position;
+
+public class DeviceManager implements IdentityManager {
+
+ private final Config config;
+ private final DataManager dataManager;
+ private final long dataRefreshDelay;
+
+ private final ReadWriteLock devicesLock = new ReentrantReadWriteLock();
+ private final Map<Long, Device> devicesById = new HashMap<>();
+ private final Map<String, Device> devicesByUniqueId = new HashMap<>();
+ private long devicesLastUpdate;
+
+ private final Map<Long, Position> positions = new ConcurrentHashMap<>();
+
+ public DeviceManager(DataManager dataManager) {
+ this.dataManager = dataManager;
+ this.config = Context.getConfig();
+ dataRefreshDelay = config.getLong("database.refreshDelay", DataManager.DEFAULT_REFRESH_DELAY) * 1000;
+ if (dataManager != null) {
+ try {
+ for (Position position : dataManager.getLatestPositions()) {
+ positions.put(position.getDeviceId(), position);
+ }
+ } catch (SQLException error) {
+ Log.warning(error);
+ }
+ }
+ }
+
+ private void updateDeviceCache(boolean force) throws SQLException {
+ boolean needWrite;
+ devicesLock.readLock().lock();
+ try {
+ needWrite = force || System.currentTimeMillis() - devicesLastUpdate > dataRefreshDelay;
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+
+ if (needWrite) {
+ devicesLock.writeLock().lock();
+ try {
+ if (force || System.currentTimeMillis() - devicesLastUpdate > dataRefreshDelay) {
+ devicesById.clear();
+ devicesByUniqueId.clear();
+ GeofenceManager geofenceManager = Context.getGeofenceManager();
+ for (Device device : dataManager.getAllDevices()) {
+ devicesById.put(device.getId(), device);
+ devicesByUniqueId.put(device.getUniqueId(), device);
+ if (geofenceManager != null) {
+ Position lastPosition = getLastPosition(device.getId());
+ if (lastPosition != null) {
+ device.setGeofenceIds(geofenceManager.getCurrentDeviceGeofences(lastPosition));
+ }
+ }
+ }
+ devicesLastUpdate = System.currentTimeMillis();
+ }
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+ }
+ }
+
+ @Override
+ public Device getDeviceById(long id) {
+ boolean forceUpdate;
+ devicesLock.readLock().lock();
+ try {
+ forceUpdate = !devicesById.containsKey(id);
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+
+ try {
+ updateDeviceCache(forceUpdate);
+ } catch (SQLException e) {
+ Log.warning(e);
+ }
+
+ devicesLock.readLock().lock();
+ try {
+ return devicesById.get(id);
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+ }
+
+ @Override
+ public Device getDeviceByUniqueId(String uniqueId) throws SQLException {
+ boolean forceUpdate;
+ devicesLock.readLock().lock();
+ try {
+ forceUpdate = !devicesByUniqueId.containsKey(uniqueId) && !config.getBoolean("database.ignoreUnknown");
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+
+ updateDeviceCache(forceUpdate);
+
+ devicesLock.readLock().lock();
+ try {
+ return devicesByUniqueId.get(uniqueId);
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+ }
+
+ public Collection<Device> getAllDevices() {
+ boolean forceUpdate;
+ devicesLock.readLock().lock();
+ try {
+ forceUpdate = devicesById.isEmpty();
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+
+ try {
+ updateDeviceCache(forceUpdate);
+ } catch (SQLException e) {
+ Log.warning(e);
+ }
+
+ devicesLock.readLock().lock();
+ try {
+ return devicesById.values();
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+ }
+
+ public Collection<Device> getDevices(long userId) throws SQLException {
+ Collection<Device> devices = new ArrayList<>();
+ devicesLock.readLock().lock();
+ try {
+ for (long id : Context.getPermissionsManager().getDevicePermissions(userId)) {
+ devices.add(devicesById.get(id));
+ }
+ } finally {
+ devicesLock.readLock().unlock();
+ }
+ return devices;
+ }
+
+ public void addDevice(Device device) throws SQLException {
+ dataManager.addDevice(device);
+
+ devicesLock.writeLock().lock();
+ try {
+ devicesById.put(device.getId(), device);
+ devicesByUniqueId.put(device.getUniqueId(), device);
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+ }
+
+ public void updateDevice(Device device) throws SQLException {
+ dataManager.updateDevice(device);
+
+ devicesLock.writeLock().lock();
+ try {
+ devicesById.put(device.getId(), device);
+ devicesByUniqueId.put(device.getUniqueId(), device);
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+ }
+
+ public void updateDeviceStatus(Device device) throws SQLException {
+ dataManager.updateDeviceStatus(device);
+
+ devicesLock.writeLock().lock();
+ try {
+ if (devicesById.containsKey(device.getId())) {
+ Device cachedDevice = devicesById.get(device.getId());
+ cachedDevice.setStatus(device.getStatus());
+ cachedDevice.setMotion(device.getMotion());
+ }
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+ }
+
+ public void removeDevice(long deviceId) throws SQLException {
+ dataManager.removeDevice(deviceId);
+
+ devicesLock.writeLock().lock();
+ try {
+ if (devicesById.containsKey(deviceId)) {
+ String deviceUniqueId = devicesById.get(deviceId).getUniqueId();
+ devicesById.remove(deviceId);
+ devicesByUniqueId.remove(deviceUniqueId);
+ }
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+
+ positions.remove(deviceId);
+ }
+
+ public void updateLatestPosition(Position position) throws SQLException {
+
+ Position lastPosition = getLastPosition(position.getDeviceId());
+ if (lastPosition == null || position.getFixTime().compareTo(lastPosition.getFixTime()) > 0) {
+
+ dataManager.updateLatestPosition(position);
+
+ devicesLock.writeLock().lock();
+ try {
+ if (devicesById.containsKey(position.getDeviceId())) {
+ devicesById.get(position.getDeviceId()).setPositionId(position.getId());
+ }
+ } finally {
+ devicesLock.writeLock().unlock();
+ }
+
+ positions.put(position.getDeviceId(), position);
+
+ if (Context.getConnectionManager() != null) {
+ Context.getConnectionManager().updatePosition(position);
+ }
+ }
+ }
+
+ @Override
+ public Position getLastPosition(long deviceId) {
+ return positions.get(deviceId);
+ }
+
+ public Collection<Position> getInitialState(long userId) {
+
+ List<Position> result = new LinkedList<>();
+
+ if (Context.getPermissionsManager() != null) {
+ for (long deviceId : Context.getPermissionsManager().getDevicePermissions(userId)) {
+ if (positions.containsKey(deviceId)) {
+ result.add(positions.get(deviceId));
+ }
+ }
+ }
+
+ return result;
+ }
+}