org.droid2droid.internal.RemoteBinderProxy.java Source code

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Here is the source code for org.droid2droid.internal.RemoteBinderProxy.java

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/******************************************************************************
 *
 * droid2droid - Distributed Android Framework
 * ==========================================
 *
 * Copyright (C) 2012 by Atos (http://www.http://atos.net)
 * http://www.droid2droid.org
 *
 ******************************************************************************
 *
 * 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 org.droid2droid.internal;

import static org.droid2droid.internal.Constants.TIMEOUT_FINALIZE;
import static org.droid2droid.internal.Constants.TIMEOUT_IS_BINDER_ALIVE;
import static org.droid2droid.internal.Constants.TIMEOUT_PING_BINDER;

import java.io.FileDescriptor;
import java.lang.ref.WeakReference;

import org.apache.http.MethodNotSupportedException;

import android.os.IBinder;
import android.os.IInterface;
import android.os.Parcel;
import android.os.RemoteException;

/** @hide */

// Binder to remote android
public final class RemoteBinderProxy implements IBinder {
    private IInterface mOwner;

    private String mDescriptor = "org.droid2droid.RemoteAndroidBinderProxy";

    @SuppressWarnings("unused")
    final private WeakReference<RemoteBinderProxy> mSelf = new WeakReference<RemoteBinderProxy>(this);

    private DeathRecipient mDeathRecipient; // TODO: Utiliser le mDeathRecipient

    private final AbstractRemoteAndroidImpl mProvider;

    protected int mObject = 0; // Cloud OID for remote instance

    protected long mTimeoutTransact = 50000L;

    protected RemoteBinderProxy(AbstractRemoteAndroidImpl provider, int oid) {
        mProvider = provider;
        mObject = oid;
    }

    @Override
    public boolean pingBinder() {
        try {
            return mProvider != null
                    && mProvider.pingBinder(mProvider.getConnectionId(), mObject, TIMEOUT_PING_BINDER);
        } catch (RemoteException e) {
            return false;
        }
    }

    @Override
    public boolean isBinderAlive() {
        try {
            return mObject != -1 && mProvider != null
                    && mProvider.isBinderAlive(mProvider.getConnectionId(), mObject, TIMEOUT_IS_BINDER_ALIVE);
        } catch (RemoteException e) {
            return false;
        }
    }

    @Override
    public IInterface queryLocalInterface(String descriptor) {
        if (mDescriptor.equals(descriptor))
            return mOwner;
        return null;
    }

    public void attachInterface(IInterface owner, String descriptor) {
        mOwner = owner;
        mDescriptor = descriptor;
    }

    @Override
    public String getInterfaceDescriptor() throws RemoteException {
        return "org.droid2droid.RemoteAndroidBinderProxy";
    }

    /** Send transactions to remote cloud. */
    @Override
    public boolean transact(int code, Parcel data, Parcel reply, int flags) throws RemoteException {
        return mProvider.transactBinder(mProvider.getConnectionId(), mObject, code, data, reply, flags,
                mTimeoutTransact);
    }

    @Override
    public void linkToDeath(DeathRecipient recipient, int flags) throws RemoteException {
        mDeathRecipient = recipient;
        // Ignore flags ?
    }

    @Override
    public boolean unlinkToDeath(DeathRecipient recipient, int flags) {
        mDeathRecipient = null;
        // Ignore flags ?
        return true;
    }

    @Override
    public void dump(FileDescriptor fd, String[] args) throws RemoteException {
        Parcel data = Parcel.obtain();
        data.writeFileDescriptor(fd);
        data.writeStringArray(args);
        try {
            transact(DUMP_TRANSACTION, data, null, 0);
        } finally {
            data.recycle();
        }
    }

    @Override
    public void finalize() {
        if (mProvider != null)
            mProvider.finalizeOID(mProvider.getConnectionId(), mObject, TIMEOUT_FINALIZE);
    }

    //@Override
    @Override
    public void dumpAsync(FileDescriptor arg0, String[] arg1) throws RemoteException {
        RemoteException re = new RemoteException();
        re.initCause(new MethodNotSupportedException("dumpAsync"));
        throw re;
    }
}