diff options
author | Anton Tananaev <anton.tananaev@gmail.com> | 2019-02-23 15:23:35 -0800 |
---|---|---|
committer | Anton Tananaev <anton.tananaev@gmail.com> | 2019-02-23 15:23:35 -0800 |
commit | 563243a8da888244e910a4a7a10fb86ad525fdd4 (patch) | |
tree | 0a50db4a2ca280d3cd3b2b78065d31ef96e5fef5 /src/org/traccar/handler/FilterHandler.java | |
parent | 7aa3760f02361a04e2c3b73ba5b9cc41bcb8ec3d (diff) | |
download | traccar-server-563243a8da888244e910a4a7a10fb86ad525fdd4.tar.gz traccar-server-563243a8da888244e910a4a7a10fb86ad525fdd4.tar.bz2 traccar-server-563243a8da888244e910a4a7a10fb86ad525fdd4.zip |
Handler refactoring
Diffstat (limited to 'src/org/traccar/handler/FilterHandler.java')
-rw-r--r-- | src/org/traccar/handler/FilterHandler.java | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/src/org/traccar/handler/FilterHandler.java b/src/org/traccar/handler/FilterHandler.java new file mode 100644 index 000000000..dceaede01 --- /dev/null +++ b/src/org/traccar/handler/FilterHandler.java @@ -0,0 +1,206 @@ +/* + * Copyright 2014 - 2018 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.handler; + +import io.netty.channel.ChannelHandler; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.traccar.BaseDataHandler; +import org.traccar.Context; +import org.traccar.config.Config; +import org.traccar.config.Keys; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +@ChannelHandler.Sharable +public class FilterHandler extends BaseDataHandler { + + private static final Logger LOGGER = LoggerFactory.getLogger(FilterHandler.class); + + private boolean filterInvalid; + private boolean filterZero; + private boolean filterDuplicate; + private long filterFuture; + private boolean filterApproximate; + private int filterAccuracy; + private boolean filterStatic; + private int filterDistance; + private int filterMaxSpeed; + private long filterMinPeriod; + private long skipLimit; + private boolean skipAttributes; + + public FilterHandler(Config config) { + filterInvalid = config.getBoolean(Keys.FILTER_INVALID); + filterZero = config.getBoolean(Keys.FILTER_ZERO); + filterDuplicate = config.getBoolean(Keys.FILTER_DUPLICATE); + filterFuture = config.getLong(Keys.FILTER_FUTURE) * 1000; + filterAccuracy = config.getInteger(Keys.FILTER_ACCURACY); + filterApproximate = config.getBoolean(Keys.FILTER_APPROXIMATE); + filterStatic = config.getBoolean(Keys.FILTER_STATIC); + filterDistance = config.getInteger(Keys.FILTER_DISTANCE); + filterMaxSpeed = config.getInteger(Keys.FILTER_MAX_SPEED); + filterMinPeriod = config.getInteger(Keys.FILTER_MIN_PERIOD) * 1000; + skipLimit = config.getLong(Keys.FILTER_SKIP_LIMIT) * 1000; + skipAttributes = config.getBoolean(Keys.FILTER_SKIP_ATTRIBUTES_ENABLE); + } + + private boolean filterInvalid(Position position) { + return filterInvalid && (!position.getValid() + || position.getLatitude() > 90 || position.getLongitude() > 180 + || position.getLatitude() < -90 || position.getLongitude() < -180); + } + + private boolean filterZero(Position position) { + return filterZero && position.getLatitude() == 0.0 && position.getLongitude() == 0.0; + } + + private boolean filterDuplicate(Position position, Position last) { + if (filterDuplicate && last != null && position.getFixTime().equals(last.getFixTime())) { + for (String key : position.getAttributes().keySet()) { + if (!last.getAttributes().containsKey(key)) { + return false; + } + } + return true; + } + return false; + } + + private boolean filterFuture(Position position) { + return filterFuture != 0 && position.getFixTime().getTime() > System.currentTimeMillis() + filterFuture; + } + + private boolean filterAccuracy(Position position) { + return filterAccuracy != 0 && position.getAccuracy() > filterAccuracy; + } + + private boolean filterApproximate(Position position) { + return filterApproximate && position.getBoolean(Position.KEY_APPROXIMATE); + } + + private boolean filterStatic(Position position) { + return filterStatic && position.getSpeed() == 0.0; + } + + private boolean filterDistance(Position position, Position last) { + if (filterDistance != 0 && last != null) { + return position.getDouble(Position.KEY_DISTANCE) < filterDistance; + } + return false; + } + + private boolean filterMaxSpeed(Position position, Position last) { + if (filterMaxSpeed != 0 && last != null) { + double distance = position.getDouble(Position.KEY_DISTANCE); + double time = position.getFixTime().getTime() - last.getFixTime().getTime(); + return UnitsConverter.knotsFromMps(distance / (time / 1000)) > filterMaxSpeed; + } + return false; + } + + private boolean filterMinPeriod(Position position, Position last) { + if (filterMinPeriod != 0 && last != null) { + long time = position.getFixTime().getTime() - last.getFixTime().getTime(); + return time > 0 && time < filterMinPeriod; + } + return false; + } + + private boolean skipLimit(Position position, Position last) { + if (skipLimit != 0 && last != null) { + return (position.getServerTime().getTime() - last.getServerTime().getTime()) > skipLimit; + } + return false; + } + + private boolean skipAttributes(Position position) { + if (skipAttributes) { + String attributesString = Context.getIdentityManager().lookupAttributeString( + position.getDeviceId(), "filter.skipAttributes", "", true); + for (String attribute : attributesString.split("[ ,]")) { + if (position.getAttributes().containsKey(attribute)) { + return true; + } + } + } + return false; + } + + private boolean filter(Position position) { + + StringBuilder filterType = new StringBuilder(); + + Position last = null; + if (Context.getIdentityManager() != null) { + last = Context.getIdentityManager().getLastPosition(position.getDeviceId()); + } + + if (filterInvalid(position)) { + filterType.append("Invalid "); + } + if (filterZero(position)) { + filterType.append("Zero "); + } + if (filterDuplicate(position, last) && !skipLimit(position, last) && !skipAttributes(position)) { + filterType.append("Duplicate "); + } + if (filterFuture(position)) { + filterType.append("Future "); + } + if (filterAccuracy(position)) { + filterType.append("Accuracy "); + } + if (filterApproximate(position)) { + filterType.append("Approximate "); + } + if (filterStatic(position) && !skipLimit(position, last) && !skipAttributes(position)) { + filterType.append("Static "); + } + if (filterDistance(position, last) && !skipLimit(position, last) && !skipAttributes(position)) { + filterType.append("Distance "); + } + if (filterMaxSpeed(position, last)) { + filterType.append("MaxSpeed "); + } + if (filterMinPeriod(position, last)) { + filterType.append("MinPeriod "); + } + + if (filterType.length() > 0) { + + StringBuilder message = new StringBuilder(); + message.append("Position filtered by "); + message.append(filterType.toString()); + message.append("filters from device: "); + message.append(Context.getIdentityManager().getById(position.getDeviceId()).getUniqueId()); + + LOGGER.info(message.toString()); + return true; + } + + return false; + } + + @Override + protected Position handlePosition(Position position) { + if (filter(position)) { + return null; + } + return position; + } + +} |