/*
* Copyright (C) 2010 The Android Open Source Project
*
* 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 android.content;
import com.google.android.collect.Maps;
import android.content.pm.RegisteredServicesCache;
import android.os.SystemClock;
import android.text.format.DateUtils;
import android.util.Pair;
import android.util.Log;
import android.accounts.Account;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
/**
*
* @hide
*/
public class SyncQueue {
private static final String TAG = "SyncManager";
private SyncStorageEngine mSyncStorageEngine;
// A Map of SyncOperations operationKey -> SyncOperation that is designed for
// quick lookup of an enqueued SyncOperation.
public final HashMap<String, SyncOperation> mOperationsMap = Maps.newHashMap();
public SyncQueue(SyncStorageEngine syncStorageEngine, final SyncAdaptersCache syncAdapters) {
mSyncStorageEngine = syncStorageEngine;
ArrayList<SyncStorageEngine.PendingOperation> ops
= mSyncStorageEngine.getPendingOperations();
final int N = ops.size();
for (int i=0; i<N; i++) {
SyncStorageEngine.PendingOperation op = ops.get(i);
final Pair<Long, Long> backoff = syncStorageEngine.getBackoff(op.account, op.authority);
final RegisteredServicesCache.ServiceInfo<SyncAdapterType> syncAdapterInfo =
syncAdapters.getServiceInfo(
SyncAdapterType.newKey(op.authority, op.account.type));
if (syncAdapterInfo == null) {
continue;
}
SyncOperation syncOperation = new SyncOperation(
op.account, op.syncSource, op.authority, op.extras, 0 /* delay */,
backoff != null ? backoff.first : 0,
syncStorageEngine.getDelayUntilTime(op.account, op.authority),
syncAdapterInfo.type.allowParallelSyncs());
syncOperation.expedited = op.expedited;
syncOperation.pendingOperation = op;
add(syncOperation, op);
}
}
public boolean add(SyncOperation operation) {
return add(operation, null /* this is not coming from the database */);
}
private boolean add(SyncOperation operation,
SyncStorageEngine.PendingOperation pop) {
// - if an operation with the same key exists and this one should run earlier,
// update the earliestRunTime of the existing to the new time
// - if an operation with the same key exists and if this one should run
// later, ignore it
// - if no operation exists then add the new one
final String operationKey = operation.key;
final SyncOperation existingOperation = mOperationsMap.get(operationKey);
if (existingOperation != null) {
boolean changed = false;
if (existingOperation.expedited == operation.expedited) {
final long newRunTime =
Math.min(existingOperation.earliestRunTime, operation.earliestRunTime);
if (existingOperation.earliestRunTime != newRunTime) {
existingOperation.earliestRunTime = newRunTime;
changed = true;
}
} else {
if (operation.expedited) {
existingOperation.expedited = true;
changed = true;
}
}
return changed;
}
operation.pendingOperation = pop;
if (operation.pendingOperation == null) {
pop = new SyncStorageEngine.PendingOperation(
operation.account, operation.syncSource,
operation.authority, operation.extras, operation.expedited);
pop = mSyncStorageEngine.insertIntoPending(pop);
if (pop == null) {
throw new IllegalStateException("error adding pending sync operation "
+ operation);
}
operation.pendingOperation = pop;
}
mOperationsMap.put(operationKey, operation);
return true;
}
/**
* Remove the specified operation if it is in the queue.
* @param operation the operation to remove
*/
public void remove(SyncOperation operation) {
SyncOperation operationToRemove = mOperationsMap.remove(operation.key);
if (operationToRemove == null) {
return;
}
if (!mSyncStorageEngine.deleteFromPending(operationToRemove.pendingOperation)) {
final String errorMessage = "unable to find pending row for " + operationToRemove;
Log.e(TAG, errorMessage, new IllegalStateException(errorMessage));
}
}
public void onBackoffChanged(Account account, String providerName, long backoff) {
// for each op that matches the account and provider update its
// backoff and effectiveStartTime
for (SyncOperation op : mOperationsMap.values()) {
if (op.account.equals(account) && op.authority.equals(providerName)) {
op.backoff = backoff;
op.updateEffectiveRunTime();
}
}
}
public void onDelayUntilTimeChanged(Account account, String providerName, long delayUntil) {
// for each op that matches the account and provider update its
// delayUntilTime and effectiveStartTime
for (SyncOperation op : mOperationsMap.values()) {
if (op.account.equals(account) && op.authority.equals(providerName)) {
op.delayUntil = delayUntil;
op.updateEffectiveRunTime();
}
}
}
public void remove(Account account, String authority) {
Iterator<Map.Entry<String, SyncOperation>> entries = mOperationsMap.entrySet().iterator();
while (entries.hasNext()) {
Map.Entry<String, SyncOperation> entry = entries.next();
SyncOperation syncOperation = entry.getValue();
if (account != null && !syncOperation.account.equals(account)) {
continue;
}
if (authority != null && !syncOperation.authority.equals(authority)) {
continue;
}
entries.remove();
if (!mSyncStorageEngine.deleteFromPending(syncOperation.pendingOperation)) {
final String errorMessage = "unable to find pending row for " + syncOperation;
Log.e(TAG, errorMessage, new IllegalStateException(errorMessage));
}
}
}
public void dump(StringBuilder sb) {
final long now = SystemClock.elapsedRealtime();
sb.append("SyncQueue: ").append(mOperationsMap.size()).append(" operation(s)\n");
for (SyncOperation operation : mOperationsMap.values()) {
sb.append(" ");
if (operation.effectiveRunTime <= now) {
sb.append("READY");
} else {
sb.append(DateUtils.formatElapsedTime((operation.effectiveRunTime - now) / 1000));
}
sb.append(" - ");
sb.append(operation.dump(false)).append("\n");
}
}
}