blob: 8e1f540a4d5ef7125a2e7ef9d7e008d6fbe6b9cc [file] [log] [blame]
/*
* Copyright (C) 2018 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 com.android.server;
import android.annotation.NonNull;
import android.content.ComponentName;
import android.content.Context;
import android.util.Slog;
import java.io.PrintWriter;
/**
* Base class representing a remote service that can have only one pending requests while not bound.
*
* <p>If another request is received while not bound, the previous one will be canceled.
*
* @param <S> the concrete remote service class
*
* @hide
*/
public abstract class AbstractSinglePendingRequestRemoteService<
S extends AbstractSinglePendingRequestRemoteService<S>> extends AbstractRemoteService<S> {
protected PendingRequest<S> mPendingRequest;
public AbstractSinglePendingRequestRemoteService(@NonNull Context context,
@NonNull String serviceInterface, @NonNull ComponentName componentName, int userId,
@NonNull VultureCallback callback, boolean bindInstantServiceAllowed,
boolean verbose) {
super(context, serviceInterface, componentName, userId, callback, bindInstantServiceAllowed,
verbose);
}
@Override // from AbstractRemoteService
void handlePendingRequests() {
if (mPendingRequest != null) {
final PendingRequest<S> pendingRequest = mPendingRequest;
mPendingRequest = null;
handlePendingRequest(pendingRequest);
}
}
@Override // from AbstractRemoteService
protected void handleOnDestroy() {
if (mPendingRequest != null) {
mPendingRequest.cancel();
mPendingRequest = null;
}
}
@Override // from AbstractRemoteService
public void dump(@NonNull String prefix, @NonNull PrintWriter pw) {
super.dump(prefix, pw);
pw.append(prefix).append("hasPendingRequest=")
.append(String.valueOf(mPendingRequest != null)).println();
}
@Override // from AbstractRemoteService
void handlePendingRequestWhileUnBound(@NonNull PendingRequest<S> pendingRequest) {
if (mPendingRequest != null) {
if (mVerbose) {
Slog.v(mTag, "handlePendingRequestWhileUnBound(): cancelling " + mPendingRequest);
}
mPendingRequest.cancel();
}
mPendingRequest = pendingRequest;
}
}