Philip P. Moltmann | a26b775 | 2016-05-23 10:33:57 -0700 | [diff] [blame] | 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.plugin.samsung; |
| 18 | |
| 19 | import android.content.Context; |
| 20 | import android.content.res.TypedArray; |
| 21 | import android.net.nsd.NsdManager; |
| 22 | import android.net.nsd.NsdServiceInfo; |
| 23 | import android.text.TextUtils; |
| 24 | import android.util.Pair; |
| 25 | |
| 26 | import java.util.ArrayList; |
| 27 | import java.util.HashMap; |
| 28 | import java.util.List; |
| 29 | import java.util.Map; |
| 30 | import java.util.Set; |
| 31 | |
| 32 | import com.android.printservice.recommendation.R; |
| 33 | import com.android.printservice.recommendation.util.DiscoveryListenerMultiplexer; |
| 34 | |
| 35 | public class ServiceListener implements ServiceResolveQueue.ResolveCallback { |
| 36 | |
| 37 | private final NsdManager mNSDManager; |
| 38 | private final Map<String, VendorInfo> mVendorInfoHashMap; |
| 39 | private final String[] mServiceType; |
| 40 | private final Observer mObserver; |
| 41 | private final ServiceResolveQueue mResolveQueue; |
| 42 | private List<NsdManager.DiscoveryListener> mListeners = new ArrayList<>(); |
| 43 | public HashMap<String, PrinterHashMap> mVendorHashMap = new HashMap<>(); |
| 44 | |
| 45 | public interface Observer { |
| 46 | boolean matchesCriteria(String vendor, NsdServiceInfo serviceInfo); |
| 47 | void dataSetChanged(); |
| 48 | } |
| 49 | |
| 50 | public ServiceListener(Context context, Observer observer, String[] serviceTypes) { |
| 51 | mObserver = observer; |
| 52 | mServiceType = serviceTypes; |
| 53 | mNSDManager = (NsdManager)context.getSystemService(Context.NSD_SERVICE); |
| 54 | mResolveQueue = ServiceResolveQueue.getInstance(mNSDManager); |
| 55 | |
| 56 | Map<String, VendorInfo> vendorInfoMap = new HashMap<>(); |
| 57 | TypedArray testArray = context.getResources().obtainTypedArray(R.array.known_print_plugin_vendors); |
| 58 | for(int i = 0; i < testArray.length(); i++) { |
| 59 | int arrayID = testArray.getResourceId(i, 0); |
| 60 | if (arrayID != 0) { |
| 61 | VendorInfo info = new VendorInfo(context.getResources(), arrayID); |
| 62 | vendorInfoMap.put(info.mVendorID, info); |
| 63 | vendorInfoMap.put(info.mPackageName, info); |
| 64 | } |
| 65 | } |
| 66 | testArray.recycle(); |
| 67 | mVendorInfoHashMap = vendorInfoMap; |
| 68 | } |
| 69 | |
| 70 | @Override |
| 71 | public void serviceResolved(NsdServiceInfo nsdServiceInfo) { |
| 72 | printerFound(nsdServiceInfo); |
| 73 | } |
| 74 | |
| 75 | private synchronized void printerFound(NsdServiceInfo nsdServiceInfo) { |
| 76 | if (nsdServiceInfo == null) return; |
| 77 | if (TextUtils.isEmpty(PrinterHashMap.getKey(nsdServiceInfo))) return; |
| 78 | String vendor = MDnsUtils.getVendor(nsdServiceInfo); |
| 79 | if (vendor == null) vendor = ""; |
| 80 | for(Map.Entry<String,VendorInfo> entry : mVendorInfoHashMap.entrySet()) { |
| 81 | for(String vendorValues : entry.getValue().mDNSValues) { |
| 82 | if (vendor.equalsIgnoreCase(vendorValues)) { |
| 83 | vendor = entry.getValue().mVendorID; |
| 84 | break; |
| 85 | } |
| 86 | } |
| 87 | // intentional pointer check |
| 88 | //noinspection StringEquality |
| 89 | if ((vendor != entry.getValue().mVendorID) && |
| 90 | MDnsUtils.isVendorPrinter(nsdServiceInfo, entry.getValue().mDNSValues)) { |
| 91 | vendor = entry.getValue().mVendorID; |
| 92 | } |
| 93 | // intentional pointer check |
| 94 | //noinspection StringEquality |
| 95 | if (vendor == entry.getValue().mVendorID) break; |
| 96 | } |
| 97 | |
| 98 | if (TextUtils.isEmpty(vendor)) { |
| 99 | return; |
| 100 | } |
| 101 | |
| 102 | if (!mObserver.matchesCriteria(vendor, nsdServiceInfo)) |
| 103 | return; |
| 104 | boolean mapsChanged; |
| 105 | |
| 106 | PrinterHashMap vendorHash = mVendorHashMap.get(vendor); |
| 107 | if (vendorHash == null) { |
| 108 | vendorHash = new PrinterHashMap(); |
| 109 | } |
| 110 | mapsChanged = (vendorHash.addPrinter(nsdServiceInfo) == null); |
| 111 | mVendorHashMap.put(vendor, vendorHash); |
| 112 | |
| 113 | if (mapsChanged) { |
| 114 | mObserver.dataSetChanged(); |
| 115 | } |
| 116 | } |
| 117 | |
| 118 | private synchronized void printerRemoved(NsdServiceInfo nsdServiceInfo) { |
| 119 | boolean wasRemoved = false; |
| 120 | Set<String> vendors = mVendorHashMap.keySet(); |
| 121 | for(String vendor : vendors) { |
| 122 | PrinterHashMap map = mVendorHashMap.get(vendor); |
| 123 | wasRemoved |= (map.removePrinter(nsdServiceInfo) != null); |
| 124 | if (map.isEmpty()) wasRemoved |= (mVendorHashMap.remove(vendor) != null); |
| 125 | } |
| 126 | if (wasRemoved) { |
| 127 | mObserver.dataSetChanged(); |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | public void start() { |
| 132 | stop(); |
| 133 | for(final String service :mServiceType) { |
| 134 | NsdManager.DiscoveryListener listener = new NsdManager.DiscoveryListener() { |
| 135 | @Override |
| 136 | public void onStartDiscoveryFailed(String s, int i) { |
| 137 | |
| 138 | } |
| 139 | |
| 140 | @Override |
| 141 | public void onStopDiscoveryFailed(String s, int i) { |
| 142 | |
| 143 | } |
| 144 | |
| 145 | @Override |
| 146 | public void onDiscoveryStarted(String s) { |
| 147 | |
| 148 | } |
| 149 | |
| 150 | @Override |
| 151 | public void onDiscoveryStopped(String s) { |
| 152 | |
| 153 | } |
| 154 | |
| 155 | @Override |
| 156 | public void onServiceFound(NsdServiceInfo nsdServiceInfo) { |
| 157 | mResolveQueue.queueRequest(nsdServiceInfo, ServiceListener.this); |
| 158 | } |
| 159 | |
| 160 | @Override |
| 161 | public void onServiceLost(NsdServiceInfo nsdServiceInfo) { |
| 162 | mResolveQueue.removeRequest(nsdServiceInfo, ServiceListener.this); |
| 163 | printerRemoved(nsdServiceInfo); |
| 164 | } |
| 165 | }; |
| 166 | DiscoveryListenerMultiplexer.addListener(mNSDManager, service, listener); |
| 167 | mListeners.add(listener); |
| 168 | } |
| 169 | } |
| 170 | |
| 171 | public void stop() { |
| 172 | for(NsdManager.DiscoveryListener listener : mListeners) { |
| 173 | DiscoveryListenerMultiplexer.removeListener(mNSDManager, listener); |
| 174 | } |
| 175 | mVendorHashMap.clear(); |
| 176 | mListeners.clear(); |
| 177 | } |
| 178 | |
| 179 | public Pair<Integer, Integer> getCount() { |
| 180 | int count = 0; |
| 181 | for (PrinterHashMap map : mVendorHashMap.values()) { |
| 182 | count += map.size(); |
| 183 | } |
| 184 | return Pair.create(mVendorHashMap.size(), count); |
| 185 | } |
| 186 | } |