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/*
* Copyright 2016 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.notification;
import java.nio.charset.StandardCharsets;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.traccar.Context;
import org.traccar.helper.Log;
import org.traccar.model.Device;
import org.traccar.model.Event;
import org.traccar.model.Geofence;
import org.traccar.model.Position;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectWriter;
import com.ning.http.client.AsyncHttpClient.BoundRequestBuilder;
import com.ning.http.client.FluentCaseInsensitiveStringsMap;
public final class EventForwarder {
private String url;
private String header;
private boolean payloadAsParamMode;
private String payloadParamName;
private String additionalParams;
private ObjectWriter internalObjectWriter;
public EventForwarder() {
url = Context.getConfig().getString("event.forward.url", "http://localhost/");
header = Context.getConfig().getString("event.forward.header", "");
payloadAsParamMode = Context.getConfig().getBoolean("event.forward.payloadAsParamMode");
payloadParamName = Context.getConfig().getString("event.forward.paramMode.payloadParamName", "payload");
additionalParams = Context.getConfig().getString("event.forward.paramMode.additionalParams", "");
internalObjectWriter = initInternalObjectWriter();
}
private static final String KEY_POSITION = "position";
private static final String KEY_EVENT = "event";
private static final String KEY_GEOFENCE = "geofence";
private static final String KEY_DEVICE = "device";
public void forwardEvent(Event event, Position position) {
BoundRequestBuilder requestBuilder = Context.getAsyncHttpClient().preparePost(url);
requestBuilder.setBodyEncoding(StandardCharsets.UTF_8.name());
setContentTypeFromMode(requestBuilder);
if (!header.equals("")) {
FluentCaseInsensitiveStringsMap params = new FluentCaseInsensitiveStringsMap();
params.putAll(splitParams(header, ":"));
requestBuilder.setHeaders(params);
}
setContent(requestBuilder, preparePayload(event, position));
requestBuilder.execute();
}
private void setContent(BoundRequestBuilder requestBuilder, String payload) {
if (payloadAsParamMode) {
if (!additionalParams.equals("")) {
requestBuilder.setFormParams(splitParams(additionalParams, "="));
}
requestBuilder.addFormParam(payloadParamName, payload);
} else {
requestBuilder.setBody(payload);
}
}
private Map<String, List<String>> splitParams(String params, String separator) {
String[] splitedLine;
Map<String, List<String>> paramsMap = new HashMap<>();
String[] paramsLines = params.split("\\r?\\n");
for (String paramLine: paramsLines) {
splitedLine = paramLine.split(separator, 2);
if (splitedLine.length == 2) {
paramsMap.put(splitedLine[0].trim(), Arrays.asList(splitedLine[1].trim()));
}
}
return paramsMap;
}
private void setContentTypeFromMode(BoundRequestBuilder requestBuilder) {
if (payloadAsParamMode) {
requestBuilder.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
} else {
requestBuilder.addHeader("Content-Type", "application/json; charset=utf-8");
}
}
private String preparePayload(Event event, Position position) {
Map<String, Object> data = new HashMap<>();
data.put(KEY_EVENT, event);
if (position != null) {
data.put(KEY_POSITION, position);
}
if (event.getDeviceId() != 0) {
Device device = Context.getIdentityManager().getById(event.getDeviceId());
if (device != null) {
data.put(KEY_DEVICE, device);
}
}
if (event.getGeofenceId() != 0) {
Geofence geofence = (Geofence) Context.getGeofenceManager().getById(event.getGeofenceId());
if (geofence != null) {
data.put(KEY_GEOFENCE, geofence);
}
}
try {
return internalObjectWriter.writeValueAsString(data);
} catch (JsonProcessingException e) {
Log.warning(e);
return null;
}
}
private ObjectWriter initInternalObjectWriter() {
return Context.getConfig().getBoolean("event.forward.prettyPrintedPayload")
? Context.getObjectMapper().writerWithDefaultPrettyPrinter()
: Context.getObjectMapper().writer();
}
}
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