EnvironmentDeadState.java
/*
* Copyright 2023 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 androidx.javascriptengine;
import android.content.res.AssetFileDescriptor;
import android.os.ParcelFileDescriptor;
import androidx.annotation.NonNull;
import androidx.concurrent.futures.CallbackToFutureAdapter;
import androidx.core.util.Consumer;
import com.google.common.util.concurrent.ListenableFuture;
import java.util.concurrent.Executor;
/**
* Covers the case where the environment is dead.
* <p>
* This state covers cases where the developer explicitly closes the sandbox or sandbox/isolate
* being dead outside of the control of the developer.
* <p>
* Although being in this state is considered terminated from the app perspective, the service
* side may still technically be running.
*/
final class EnvironmentDeadState implements IsolateState {
@NonNull
private final TerminationInfo mTerminationInfo;
EnvironmentDeadState(@NonNull TerminationInfo terminationInfo) {
mTerminationInfo = terminationInfo;
}
@NonNull
@Override
public ListenableFuture<String> evaluateJavaScriptAsync(@NonNull String code) {
return getEnvironmentDeadFuture();
}
@NonNull
@Override
public ListenableFuture<String> evaluateJavaScriptAsync(@NonNull AssetFileDescriptor afd) {
return getEnvironmentDeadFuture();
}
@NonNull
@Override
public ListenableFuture<String> evaluateJavaScriptAsync(@NonNull ParcelFileDescriptor pfd) {
return getEnvironmentDeadFuture();
}
@Override
public void setConsoleCallback(@NonNull Executor executor,
@NonNull JavaScriptConsoleCallback callback) {
}
@Override
public void setConsoleCallback(@NonNull JavaScriptConsoleCallback callback) {
}
@Override
public void clearConsoleCallback() {
}
@Override
public void provideNamedData(@NonNull String name, @NonNull byte[] inputBytes) {
}
@Override
public void close() {
}
@Override
public boolean canDie() {
return false;
}
@Override
public void addOnTerminatedCallback(@NonNull Executor executor,
@NonNull Consumer<TerminationInfo> callback) {
executor.execute(() -> callback.accept(mTerminationInfo));
}
@Override
public void removeOnTerminatedCallback(@NonNull Consumer<TerminationInfo> callback) {}
private ListenableFuture<String> getEnvironmentDeadFuture() {
return CallbackToFutureAdapter.getFuture(completer -> {
final String futureDebugMessage = "evaluateJavascript Future";
completer.setException(mTerminationInfo.toJavaScriptException());
return futureDebugMessage;
});
}
}