1 /*
2  * Copyright (C) 2016 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.printservice.recommendation;
18 
19 import android.content.res.Configuration;
20 import android.printservice.PrintService;
21 import android.printservice.recommendation.RecommendationInfo;
22 import android.printservice.recommendation.RecommendationService;
23 import android.util.Log;
24 
25 import com.android.printservice.recommendation.plugin.google.CloudPrintPlugin;
26 import com.android.printservice.recommendation.plugin.hp.HPRecommendationPlugin;
27 import com.android.printservice.recommendation.plugin.mdnsFilter.MDNSFilterPlugin;
28 import com.android.printservice.recommendation.plugin.mdnsFilter.VendorConfig;
29 import com.android.printservice.recommendation.plugin.mopria.MopriaRecommendationPlugin;
30 import com.android.printservice.recommendation.plugin.samsung.SamsungRecommendationPlugin;
31 import com.android.printservice.recommendation.plugin.xerox.XeroxPrintServiceRecommendationPlugin;
32 
33 import org.xmlpull.v1.XmlPullParserException;
34 
35 import java.io.IOException;
36 import java.net.InetAddress;
37 import java.util.ArrayList;
38 import java.util.List;
39 
40 /**
41  * Service that recommends {@link PrintService print services} that might be a good idea to install.
42  */
43 public class RecommendationServiceImpl extends RecommendationService
44         implements RemotePrintServicePlugin.OnChangedListener {
45     private static final String LOG_TAG = "PrintServiceRecService";
46 
47     /** All registered plugins */
48     private ArrayList<RemotePrintServicePlugin> mPlugins;
49 
50     @Override
onConnected()51     public void onConnected() {
52         mPlugins = new ArrayList<>();
53 
54         try {
55             for (VendorConfig config : VendorConfig.getAllConfigs(this)) {
56                 try {
57                     mPlugins.add(new RemotePrintServicePlugin(new MDNSFilterPlugin(this,
58                             config.name, config.packageName, config.mDNSNames), this, false));
59                 } catch (Exception e) {
60                     Log.e(LOG_TAG, "Could not initiate simple MDNS plugin for " +
61                             config.packageName, e);
62                 }
63             }
64         } catch (IOException | XmlPullParserException e) {
65             throw new RuntimeException("Could not parse vendorconfig", e);
66         }
67 
68         try {
69             mPlugins.add(new RemotePrintServicePlugin(new CloudPrintPlugin(this), this,
70                     true));
71         } catch (Exception e) {
72             Log.e(LOG_TAG, "Could not initiate "
73                             + getString(R.string.plugin_vendor_google_cloud_print) + " plugin", e);
74         }
75 
76         try {
77             mPlugins.add(new RemotePrintServicePlugin(new HPRecommendationPlugin(this), this,
78                     false));
79         } catch (Exception e) {
80             Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_hp) + " plugin",
81                     e);
82         }
83 
84         try {
85             mPlugins.add(new RemotePrintServicePlugin(new MopriaRecommendationPlugin(this), this,
86                     true));
87         } catch (Exception e) {
88             Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_morpia) +
89                     " plugin", e);
90         }
91 
92         try {
93             mPlugins.add(new RemotePrintServicePlugin(new SamsungRecommendationPlugin(this), this,
94                     true));
95         } catch (Exception e) {
96             Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_samsung) +
97                     " plugin", e);
98         }
99 
100         try {
101             mPlugins.add(new RemotePrintServicePlugin(
102                     new XeroxPrintServiceRecommendationPlugin(this), this, false));
103         } catch (Exception e) {
104             Log.e(LOG_TAG, "Could not initiate " + getString(R.string.plugin_vendor_xerox) +
105                     " plugin", e);
106         }
107 
108         final int numPlugins = mPlugins.size();
109         for (int i = 0; i < numPlugins; i++) {
110             try {
111                 mPlugins.get(i).start();
112             } catch (RemotePrintServicePlugin.PluginException e) {
113                 Log.e(LOG_TAG, "Could not start plugin", e);
114             }
115         }
116     }
117 
118     @Override
onDisconnected()119     public void onDisconnected() {
120         final int numPlugins = mPlugins.size();
121         for (int i = 0; i < numPlugins; i++) {
122             try {
123                 mPlugins.get(i).stop();
124             } catch (RemotePrintServicePlugin.PluginException e) {
125                 Log.e(LOG_TAG, "Could not stop plugin", e);
126             }
127         }
128     }
129 
130     @Override
onConfigurationChanged(Configuration newConfig)131     public void onConfigurationChanged(Configuration newConfig) {
132         // Need to update plugin names as they might be localized
133         onChanged();
134     }
135 
136     @Override
onChanged()137     public void onChanged() {
138         ArrayList<RecommendationInfo> recommendations = new ArrayList<>();
139 
140         final int numPlugins = mPlugins.size();
141         for (int i = 0; i < numPlugins; i++) {
142             RemotePrintServicePlugin plugin = mPlugins.get(i);
143 
144             try {
145                 List<InetAddress> printers = plugin.getPrinters();
146 
147                 if (!printers.isEmpty()) {
148                     recommendations.add(new RecommendationInfo(plugin.packageName,
149                             getString(plugin.name), printers, plugin.recommendsMultiVendorService));
150                 }
151             } catch (Exception e) {
152                 Log.e(LOG_TAG, "Could not read state of plugin for " + plugin.packageName, e);
153             }
154         }
155 
156         updateRecommendations(recommendations);
157     }
158 }
159