/*
* Copyright (C) 2013 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 android.accounts.Account;
import android.os.Bundle;
import android.os.Parcel;
import android.os.Parcelable;
/**
* Convenience class to construct sync requests. See {@link android.content.SyncRequest.Builder}
* for an explanation of the various functions. The resulting object is passed through to the
* framework via {@link android.content.ContentResolver#requestSync(SyncRequest)}.
*/
public class SyncRequest implements Parcelable {
private static final String TAG = "SyncRequest";
/** Account to pass to the sync adapter. Can be null. */
private final Account mAccountToSync;
/** Authority string that corresponds to a ContentProvider. */
private final String mAuthority;
/** Bundle containing user info as well as sync settings. */
private final Bundle mExtras;
/** Don't allow this sync request on metered networks. */
private final boolean mDisallowMetered;
/**
* Amount of time before {@link #mSyncRunTimeSecs} from which the sync may optionally be
* started.
*/
private final long mSyncFlexTimeSecs;
/**
* Specifies a point in the future at which the sync must have been scheduled to run.
*/
private final long mSyncRunTimeSecs;
/** Periodic versus one-off. */
private final boolean mIsPeriodic;
/** Service versus provider. */
private final boolean mIsAuthority;
/** Sync should be run in lieu of other syncs. */
private final boolean mIsExpedited;
/**
* {@hide}
* @return whether this sync is periodic or one-time. A Sync Request must be
* either one of these or an InvalidStateException will be thrown in
* Builder.build().
*/
public boolean isPeriodic() {
return mIsPeriodic;
}
/**
* {@hide}
* @return whether this sync is expedited.
*/
public boolean isExpedited() {
return mIsExpedited;
}
/**
* {@hide}
*
* @return account object for this sync.
* @throws IllegalArgumentException if this function is called for a request that targets a
* sync service.
*/
public Account getAccount() {
return mAccountToSync;
}
/**
* {@hide}
*
* @return provider for this sync.
* @throws IllegalArgumentException if this function is called for a request that targets a
* sync service.
*/
public String getProvider() {
return mAuthority;
}
/**
* {@hide}
* Retrieve bundle for this SyncRequest. Will not be null.
*/
public Bundle getBundle() {
return mExtras;
}
/**
* {@hide}
* @return the earliest point in time that this sync can be scheduled.
*/
public long getSyncFlexTime() {
return mSyncFlexTimeSecs;
}
/**
* {@hide}
* @return the last point in time at which this sync must scheduled.
*/
public long getSyncRunTime() {
return mSyncRunTimeSecs;
}
public static final Creator<SyncRequest> CREATOR = new Creator<SyncRequest>() {
@Override
public SyncRequest createFromParcel(Parcel in) {
return new SyncRequest(in);
}
@Override
public SyncRequest[] newArray(int size) {
return new SyncRequest[size];
}
};
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel parcel, int flags) {
parcel.writeBundle(mExtras);
parcel.writeLong(mSyncFlexTimeSecs);
parcel.writeLong(mSyncRunTimeSecs);
parcel.writeInt((mIsPeriodic ? 1 : 0));
parcel.writeInt((mDisallowMetered ? 1 : 0));
parcel.writeInt((mIsAuthority ? 1 : 0));
parcel.writeInt((mIsExpedited? 1 : 0));
parcel.writeParcelable(mAccountToSync, flags);
parcel.writeString(mAuthority);
}
private SyncRequest(Parcel in) {
mExtras = in.readBundle();
mSyncFlexTimeSecs = in.readLong();
mSyncRunTimeSecs = in.readLong();
mIsPeriodic = (in.readInt() != 0);
mDisallowMetered = (in.readInt() != 0);
mIsAuthority = (in.readInt() != 0);
mIsExpedited = (in.readInt() != 0);
mAccountToSync = in.readParcelable(null);
mAuthority = in.readString();
}
/** {@hide} Protected ctor to instantiate anonymous SyncRequest. */
protected SyncRequest(SyncRequest.Builder b) {
mSyncFlexTimeSecs = b.mSyncFlexTimeSecs;
mSyncRunTimeSecs = b.mSyncRunTimeSecs;
mAccountToSync = b.mAccount;
mAuthority = b.mAuthority;
mIsPeriodic = (b.mSyncType == Builder.SYNC_TYPE_PERIODIC);
mIsAuthority = (b.mSyncTarget == Builder.SYNC_TARGET_ADAPTER);
mIsExpedited = b.mExpedited;
mExtras = new Bundle(b.mCustomExtras);
// For now we merge the sync config extras & the custom extras into one bundle.
// TODO: pass the configuration extras through separately.
mExtras.putAll(b.mSyncConfigExtras);
mDisallowMetered = b.mDisallowMetered;
}
/**
* Builder class for a @link SyncRequest. As you build your SyncRequest this class will also
* perform validation.
*/
public static class Builder {
/** Unknown sync type. */
private static final int SYNC_TYPE_UNKNOWN = 0;
/** Specify that this is a periodic sync. */
private static final int SYNC_TYPE_PERIODIC = 1;
/** Specify that this is a one-time sync. */
private static final int SYNC_TYPE_ONCE = 2;
/** Unknown sync target. */
private static final int SYNC_TARGET_UNKNOWN = 0;
/** Specify that this is a sync with a provider. */
private static final int SYNC_TARGET_ADAPTER = 2;
/**
* Earliest point of displacement into the future at which this sync can
* occur.
*/
private long mSyncFlexTimeSecs;
/** Displacement into the future at which this sync must occur. */
private long mSyncRunTimeSecs;
/**
* Sync configuration information - custom user data explicitly provided by the developer.
* This data is handed over to the sync operation.
*/
private Bundle mCustomExtras;
/**
* Sync system configuration - used to store system sync configuration. Corresponds to
* ContentResolver.SYNC_EXTRAS_* flags.
* TODO: Use this instead of dumping into one bundle. Need to decide if these flags should
* discriminate between equivalent syncs.
*/
private Bundle mSyncConfigExtras;
/** Whether or not this sync can occur on metered networks. Default false. */
private boolean mDisallowMetered;
/**
* Whether this builder is building a periodic sync, or a one-time sync.
*/
private int mSyncType = SYNC_TYPE_UNKNOWN;
/** Whether this will go to a sync adapter. */
private int mSyncTarget = SYNC_TARGET_UNKNOWN;
/** Whether this is a user-activated sync. */
private boolean mIsManual;
/**
* Whether to retry this one-time sync if the sync fails. Not valid for
* periodic syncs. See {@link ContentResolver#SYNC_EXTRAS_DO_NOT_RETRY}.
*/
private boolean mNoRetry;
/**
* Whether to respect back-off for this one-time sync. Not valid for
* periodic syncs. See
* {@link ContentResolver#SYNC_EXTRAS_IGNORE_BACKOFF};
*/
private boolean mIgnoreBackoff;
/** Ignore sync system settings and perform sync anyway. */
private boolean mIgnoreSettings;
/** This sync will run in preference to other non-expedited syncs. */
private boolean mExpedited;
/**
* The Account object that together with an Authority name define the SyncAdapter (if
* this sync is bound to a provider), otherwise null.
*/
private Account mAccount;
/**
* The Authority name that together with an Account define the SyncAdapter (if
* this sync is bound to a provider), otherwise null.
*/
private String mAuthority;
public Builder() {
}
/**
* Request that a sync occur immediately.
*
* Example
* <pre>
* SyncRequest.Builder builder = (new SyncRequest.Builder()).syncOnce();
* </pre>
*/
public Builder syncOnce() {
if (mSyncType != SYNC_TYPE_UNKNOWN) {
throw new IllegalArgumentException("Sync type has already been defined.");
}
mSyncType = SYNC_TYPE_ONCE;
setupInterval(0, 0);
return this;
}
/**
* Build a periodic sync. Either this or syncOnce() <b>must</b> be called for this builder.
* Syncs are identified by target {@link android.provider} and by the
* contents of the extras bundle.
* You cannot reuse the same builder for one-time syncs after having specified a periodic
* sync (by calling this function). If you do, an <code>IllegalArgumentException</code>
* will be thrown.
* <p>The bundle for a periodic sync can be queried by applications with the correct
* permissions using
* {@link ContentResolver#getPeriodicSyncs(Account account, String provider)}, so no
* sensitive data should be transferred here.
*
* Example usage.
*
* <pre>
* Request a periodic sync every 5 hours with 20 minutes of flex.
* SyncRequest.Builder builder =
* (new SyncRequest.Builder()).syncPeriodic(5 * HOUR_IN_SECS, 20 * MIN_IN_SECS);
*
* Schedule a periodic sync every hour at any point in time during that hour.
* SyncRequest.Builder builder =
* (new SyncRequest.Builder()).syncPeriodic(1 * HOUR_IN_SECS, 1 * HOUR_IN_SECS);
* </pre>
*
* N.B.: Periodic syncs are not allowed to have any of
* {@link ContentResolver#SYNC_EXTRAS_DO_NOT_RETRY},
* {@link ContentResolver#SYNC_EXTRAS_IGNORE_BACKOFF},
* {@link ContentResolver#SYNC_EXTRAS_IGNORE_SETTINGS},
* {@link ContentResolver#SYNC_EXTRAS_INITIALIZE},
* {@link ContentResolver#SYNC_EXTRAS_FORCE},
* {@link ContentResolver#SYNC_EXTRAS_EXPEDITED},
* {@link ContentResolver#SYNC_EXTRAS_MANUAL}
* set to true. If any are supplied then an <code>IllegalArgumentException</code> will
* be thrown.
*
* @param pollFrequency the amount of time in seconds that you wish
* to elapse between periodic syncs.
* @param beforeSeconds the amount of flex time in seconds before
* {@code pollFrequency} that you permit for the sync to take
* place. Must be less than {@code pollFrequency}.
*/
public Builder syncPeriodic(long pollFrequency, long beforeSeconds) {
if (mSyncType != SYNC_TYPE_UNKNOWN) {
throw new IllegalArgumentException("Sync type has already been defined.");
}
mSyncType = SYNC_TYPE_PERIODIC;
setupInterval(pollFrequency, beforeSeconds);
return this;
}
private void setupInterval(long at, long before) {
if (before > at) {
throw new IllegalArgumentException("Specified run time for the sync must be" +
" after the specified flex time.");
}
mSyncRunTimeSecs = at;
mSyncFlexTimeSecs = before;
}
/**
* Will throw an <code>IllegalArgumentException</code> if called and
* {@link #setIgnoreSettings(boolean ignoreSettings)} has already been called.
* @param disallow true to allow this transfer on metered networks. Default false.
*
*/
public Builder setDisallowMetered(boolean disallow) {
if (mIgnoreSettings && disallow) {
throw new IllegalArgumentException("setDisallowMetered(true) after having"
+ "specified that settings are ignored.");
}
mDisallowMetered = disallow;
return this;
}
/**
* Specify an authority and account for this transfer.
*
* @param authority A String identifying the content provider to be synced.
* @param account Account to sync. Can be null unless this is a periodic
* sync, for which verification by the ContentResolver will
* fail. If a sync is performed without an account, the
*/
public Builder setSyncAdapter(Account account, String authority) {
if (mSyncTarget != SYNC_TARGET_UNKNOWN) {
throw new IllegalArgumentException("Sync target has already been defined.");
}
if (authority != null && authority.length() == 0) {
throw new IllegalArgumentException("Authority must be non-empty");
}
mSyncTarget = SYNC_TARGET_ADAPTER;
mAccount = account;
mAuthority = authority;
return this;
}
/**
* Developer-provided extras handed back when sync actually occurs. This bundle is copied
* into the SyncRequest returned by {@link #build()}.
*
* Example:
* <pre>
* String[] syncItems = {"dog", "cat", "frog", "child"};
* SyncRequest.Builder builder =
* new SyncRequest.Builder()
* .setSyncAdapter(dummyAccount, dummyProvider)
* .syncOnce();
*
* for (String syncData : syncItems) {
* Bundle extras = new Bundle();
* extras.setString("data", syncData);
* builder.setExtras(extras);
* ContentResolver.sync(builder.build()); // Each sync() request creates a unique sync.
* }
* </pre>
* Only values of the following types may be used in the extras bundle:
* <ul>
* <li>Integer</li>
* <li>Long</li>
* <li>Boolean</li>
* <li>Float</li>
* <li>Double</li>
* <li>String</li>
* <li>Account</li>
* <li>null</li>
* </ul>
* If any data is present in the bundle not of this type, build() will
* throw a runtime exception.
*
* @param bundle extras bundle to set.
*/
public Builder setExtras(Bundle bundle) {
mCustomExtras = bundle;
return this;
}
/**
* Convenience function for setting {@link ContentResolver#SYNC_EXTRAS_DO_NOT_RETRY}.
*
* A one-off sync operation that fails will be retried with exponential back-off unless
* this is set to false. Not valid for periodic sync and will throw an
* <code>IllegalArgumentException</code> in build().
*
* @param noRetry true to not retry a failed sync. Default false.
*/
public Builder setNoRetry(boolean noRetry) {
mNoRetry = noRetry;
return this;
}
/**
* Convenience function for setting {@link ContentResolver#SYNC_EXTRAS_IGNORE_SETTINGS}.
*
* Not valid for periodic sync and will throw an <code>IllegalArgumentException</code> in
* {@link #build()}.
* <p>Throws <code>IllegalArgumentException</code> if called and
* {@link #setDisallowMetered(boolean)} has been set.
*
*
* @param ignoreSettings true to ignore the sync automatically settings. Default false.
*/
public Builder setIgnoreSettings(boolean ignoreSettings) {
if (mDisallowMetered && ignoreSettings) {
throw new IllegalArgumentException("setIgnoreSettings(true) after having specified"
+ " sync settings with this builder.");
}
mIgnoreSettings = ignoreSettings;
return this;
}
/**
* Convenience function for setting {@link ContentResolver#SYNC_EXTRAS_IGNORE_BACKOFF}.
*
* Ignoring back-off will force the sync scheduling process to ignore any back-off that was
* the result of a failed sync, as well as to invalidate any {@link SyncResult#delayUntil}
* value that may have been set by the adapter. Successive failures will not honor this
* flag. Not valid for periodic sync and will throw an <code>IllegalArgumentException</code>
* in {@link #build()}.
*
* @param ignoreBackoff ignore back off settings. Default false.
*/
public Builder setIgnoreBackoff(boolean ignoreBackoff) {
mIgnoreBackoff = ignoreBackoff;
return this;
}
/**
* Convenience function for setting {@link ContentResolver#SYNC_EXTRAS_MANUAL}.
*
* Not valid for periodic sync and will throw an <code>IllegalArgumentException</code> in
* {@link #build()}.
*
* @param isManual User-initiated sync or not. Default false.
*/
public Builder setManual(boolean isManual) {
mIsManual = isManual;
return this;
}
/**
* An expedited sync runs immediately and can preempt other non-expedited running syncs.
*
* Not valid for periodic sync and will throw an <code>IllegalArgumentException</code> in
* {@link #build()}.
*
* @param expedited whether to run expedited. Default false.
*/
public Builder setExpedited(boolean expedited) {
mExpedited = expedited;
return this;
}
/**
* Performs validation over the request and throws the runtime exception
* <code>IllegalArgumentException</code> if this validation fails.
*
* @return a SyncRequest with the information contained within this
* builder.
*/
public SyncRequest build() {
// Validate the extras bundle
ContentResolver.validateSyncExtrasBundle(mCustomExtras);
if (mCustomExtras == null) {
mCustomExtras = new Bundle();
}
// Combine builder extra flags into the config bundle.
mSyncConfigExtras = new Bundle();
if (mIgnoreBackoff) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_BACKOFF, true);
}
if (mDisallowMetered) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_DISALLOW_METERED, true);
}
if (mIgnoreSettings) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_SETTINGS, true);
}
if (mNoRetry) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_DO_NOT_RETRY, true);
}
if (mExpedited) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_EXPEDITED, true);
}
if (mIsManual) {
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_BACKOFF, true);
mSyncConfigExtras.putBoolean(ContentResolver.SYNC_EXTRAS_IGNORE_SETTINGS, true);
}
if (mSyncType == SYNC_TYPE_PERIODIC) {
// If this is a periodic sync ensure than invalid extras were not set.
if (ContentResolver.invalidPeriodicExtras(mCustomExtras) ||
ContentResolver.invalidPeriodicExtras(mSyncConfigExtras)) {
throw new IllegalArgumentException("Illegal extras were set");
}
}
// Ensure that a target for the sync has been set.
if (mSyncTarget == SYNC_TARGET_UNKNOWN) {
throw new IllegalArgumentException("Must specify an adapter with" +
" setSyncAdapter(Account, String");
}
return new SyncRequest(this);
}
}
}
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