1 /* 2 * Copyright (C) 2006 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.internal.telephony.dataconnection; 18 19 import android.app.PendingIntent; 20 import android.telephony.Rlog; 21 22 import com.android.internal.telephony.DctConstants; 23 import com.android.internal.telephony.Phone; 24 25 import java.io.FileDescriptor; 26 import java.io.PrintWriter; 27 import java.util.ArrayList; 28 import java.util.concurrent.atomic.AtomicBoolean; 29 import java.util.concurrent.atomic.AtomicInteger; 30 31 /** 32 * Maintain the Apn context 33 */ 34 public class ApnContext { 35 36 public final String LOG_TAG; 37 38 protected static final boolean DBG = false; 39 40 private final String mApnType; 41 42 private DctConstants.State mState; 43 44 private ArrayList<ApnSetting> mWaitingApns = null; 45 46 /** A zero indicates that all waiting APNs had a permanent error */ 47 private AtomicInteger mWaitingApnsPermanentFailureCountDown; 48 49 private ApnSetting mApnSetting; 50 51 DcAsyncChannel mDcAc; 52 53 String mReason; 54 55 PendingIntent mReconnectAlarmIntent; 56 57 /** 58 * user/app requested connection on this APN 59 */ 60 AtomicBoolean mDataEnabled; 61 62 /** 63 * carrier requirements met 64 */ 65 AtomicBoolean mDependencyMet; 66 67 public ApnContext(String apnType, String logTag) { 68 mApnType = apnType; 69 mState = DctConstants.State.IDLE; 70 setReason(Phone.REASON_DATA_ENABLED); 71 mDataEnabled = new AtomicBoolean(false); 72 mDependencyMet = new AtomicBoolean(true); 73 mWaitingApnsPermanentFailureCountDown = new AtomicInteger(0); 74 LOG_TAG = logTag; 75 } 76 77 public String getApnType() { 78 return mApnType; 79 } 80 81 public synchronized DcAsyncChannel getDcAc() { 82 return mDcAc; 83 } 84 85 public synchronized void setDataConnectionAc(DcAsyncChannel dcac) { 86 if (DBG) { 87 log("setDataConnectionAc: old dcac=" + mDcAc + " new dcac=" + dcac 88 + " this=" + this); 89 } 90 mDcAc = dcac; 91 } 92 93 public synchronized PendingIntent getReconnectIntent() { 94 return mReconnectAlarmIntent; 95 } 96 97 public synchronized void setReconnectIntent(PendingIntent intent) { 98 mReconnectAlarmIntent = intent; 99 } 100 101 public synchronized ApnSetting getApnSetting() { 102 log("getApnSetting: apnSetting=" + mApnSetting); 103 return mApnSetting; 104 } 105 106 public synchronized void setApnSetting(ApnSetting apnSetting) { 107 log("setApnSetting: apnSetting=" + apnSetting); 108 mApnSetting = apnSetting; 109 } 110 111 public synchronized void setWaitingApns(ArrayList<ApnSetting> waitingApns) { 112 mWaitingApns = waitingApns; 113 mWaitingApnsPermanentFailureCountDown.set(mWaitingApns.size()); 114 } 115 116 public int getWaitingApnsPermFailCount() { 117 return mWaitingApnsPermanentFailureCountDown.get(); 118 } 119 120 public void decWaitingApnsPermFailCount() { 121 mWaitingApnsPermanentFailureCountDown.decrementAndGet(); 122 } 123 124 public synchronized ApnSetting getNextWaitingApn() { 125 ArrayList<ApnSetting> list = mWaitingApns; 126 ApnSetting apn = null; 127 128 if (list != null) { 129 if (!list.isEmpty()) { 130 apn = list.get(0); 131 } 132 } 133 return apn; 134 } 135 136 public synchronized void removeWaitingApn(ApnSetting apn) { 137 if (mWaitingApns != null) { 138 mWaitingApns.remove(apn); 139 } 140 } 141 142 public synchronized ArrayList<ApnSetting> getWaitingApns() { 143 return mWaitingApns; 144 } 145 146 public synchronized void setState(DctConstants.State s) { 147 if (DBG) { 148 log("setState: " + s + ", previous state:" + mState); 149 } 150 151 mState = s; 152 153 if (mState == DctConstants.State.FAILED) { 154 if (mWaitingApns != null) { 155 mWaitingApns.clear(); // when teardown the connection and set to IDLE 156 } 157 } 158 } 159 160 public synchronized DctConstants.State getState() { 161 return mState; 162 } 163 164 public boolean isDisconnected() { 165 DctConstants.State currentState = getState(); 166 return ((currentState == DctConstants.State.IDLE) || 167 currentState == DctConstants.State.FAILED); 168 } 169 170 public synchronized void setReason(String reason) { 171 if (DBG) { 172 log("set reason as " + reason + ",current state " + mState); 173 } 174 mReason = reason; 175 } 176 177 public synchronized String getReason() { 178 return mReason; 179 } 180 181 public boolean isReady() { 182 return mDataEnabled.get() && mDependencyMet.get(); 183 } 184 185 public boolean isConnectable() { 186 return isReady() && ((mState == DctConstants.State.IDLE) 187 || (mState == DctConstants.State.SCANNING) 188 || (mState == DctConstants.State.RETRYING) 189 || (mState == DctConstants.State.FAILED)); 190 } 191 192 public void setEnabled(boolean enabled) { 193 if (DBG) { 194 log("set enabled as " + enabled + ", current state is " + mDataEnabled.get()); 195 } 196 mDataEnabled.set(enabled); 197 } 198 199 public boolean isEnabled() { 200 return mDataEnabled.get(); 201 } 202 203 public void setDependencyMet(boolean met) { 204 if (DBG) { 205 log("set mDependencyMet as " + met + " current state is " + mDependencyMet.get()); 206 } 207 mDependencyMet.set(met); 208 } 209 210 public boolean getDependencyMet() { 211 return mDependencyMet.get(); 212 } 213 214 @Override 215 public synchronized String toString() { 216 // We don't print mDataConnection because its recursive. 217 return "{mApnType=" + mApnType + " mState=" + getState() + " mWaitingApns={" + mWaitingApns + 218 "} mWaitingApnsPermanentFailureCountDown=" + mWaitingApnsPermanentFailureCountDown + 219 " mApnSetting={" + mApnSetting + "} mReason=" + mReason + 220 " mDataEnabled=" + mDataEnabled + " mDependencyMet=" + mDependencyMet + "}"; 221 } 222 223 protected void log(String s) { 224 Rlog.d(LOG_TAG, "[ApnContext:" + mApnType + "] " + s); 225 } 226 227 public void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 228 pw.println("ApnContext: " + this.toString()); 229 } 230 } 231