1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
|
/*
* Copyright 2015 - 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.geocoder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.traccar.Context;
import org.traccar.Main;
import org.traccar.database.StatisticsManager;
import javax.json.JsonObject;
import javax.ws.rs.ClientErrorException;
import javax.ws.rs.client.Invocation;
import javax.ws.rs.client.InvocationCallback;
import java.util.AbstractMap;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
public abstract class JsonGeocoder implements Geocoder {
private static final Logger LOGGER = LoggerFactory.getLogger(JsonGeocoder.class);
private final String url;
private final AddressFormat addressFormat;
private Map<Map.Entry<Double, Double>, String> cache;
public JsonGeocoder(String url, final int cacheSize, AddressFormat addressFormat) {
this.url = url;
this.addressFormat = addressFormat;
if (cacheSize > 0) {
this.cache = Collections.synchronizedMap(new LinkedHashMap<Map.Entry<Double, Double>, String>() {
@Override
protected boolean removeEldestEntry(Map.Entry eldest) {
return size() > cacheSize;
}
});
}
}
protected String readValue(JsonObject object, String key) {
if (object.containsKey(key) && !object.isNull(key)) {
return object.getString(key);
}
return null;
}
private String handleResponse(
double latitude, double longitude, JsonObject json, ReverseGeocoderCallback callback) {
Address address = parseAddress(json);
if (address != null) {
String formattedAddress = addressFormat.format(address);
if (cache != null) {
cache.put(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude), formattedAddress);
}
if (callback != null) {
callback.onSuccess(formattedAddress);
}
return formattedAddress;
} else {
String msg = "Empty address. Error: " + parseError(json);
if (callback != null) {
callback.onFailure(new GeocoderException(msg));
} else {
LOGGER.warn(msg);
}
}
return null;
}
@Override
public String getAddress(
final double latitude, final double longitude, final ReverseGeocoderCallback callback) {
if (cache != null) {
String cachedAddress = cache.get(new AbstractMap.SimpleImmutableEntry<>(latitude, longitude));
if (cachedAddress != null) {
if (callback != null) {
callback.onSuccess(cachedAddress);
}
return cachedAddress;
}
}
Main.getInjector().getInstance(StatisticsManager.class).registerGeocoderRequest();
Invocation.Builder request = Context.getClient().target(String.format(url, latitude, longitude)).request();
if (callback != null) {
request.async().get(new InvocationCallback<JsonObject>() {
@Override
public void completed(JsonObject json) {
handleResponse(latitude, longitude, json, callback);
}
@Override
public void failed(Throwable throwable) {
callback.onFailure(throwable);
}
});
} else {
try {
return handleResponse(latitude, longitude, request.get(JsonObject.class), null);
} catch (ClientErrorException e) {
LOGGER.warn("Geocoder network error", e);
}
}
return null;
}
public abstract Address parseAddress(JsonObject json);
protected String parseError(JsonObject json) {
return null;
}
}
|
