deploy/deployer/src/main/java/com/android/tools/deployer/AdbInstallerChannelManager.java

/*
 * Copyright (C) 2020 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.tools.deployer;

import com.android.ddmlib.AdbCommandRejectedException;
import com.android.ddmlib.TimeoutException;
import com.android.utils.ILogger;
import java.io.IOException;
import java.nio.channels.SocketChannel;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class AdbInstallerChannelManager {

    private static final HashMap<String, AdbInstallerChannel> channels = new HashMap<>();
    private final ILogger logger;
    private final AdbInstaller.Mode mode;

    AdbInstallerChannelManager(ILogger logger, AdbInstaller.Mode mode) {
        this.logger = logger;
        this.mode = mode;
    }

    public synchronized AdbInstallerChannel getChannel(AdbClient client, String version)
            throws IOException {
        String deviceId = client.getSerial();
        if (!channels.containsKey(deviceId)) {
            logger.info("Created SocketChannel to '" + deviceId + "'");
            AdbInstallerChannel channel = createChannel(client, version);
            channels.put(deviceId, channel);
        }
        return channels.get(deviceId);
    }

    private synchronized AdbInstallerChannel createChannel(AdbClient client, String version)
            throws IOException {
        SocketChannel channel = null;
        List<String> parameters = new ArrayList<>();
        parameters.add("-version=" + version);
        if (mode == AdbInstaller.Mode.DAEMON) {
            parameters.add("-daemon");
        }

        try {
            channel =
                    client.rawExec(AdbInstaller.INSTALLER_PATH, parameters.toArray(new String[0]));
        } catch (AdbCommandRejectedException | TimeoutException e) {
            try (SocketChannel c = channel) {}
            throw new IOException(e);
        }
        return new AdbInstallerChannel(channel);
    }

    public synchronized void reset(AdbClient client) throws IOException {
        String serial = client.getSerial();
        logger.info("Reset SocketChannel to '" + serial + "'");
        try (AdbInstallerChannel c = channels.get(serial)) {
            channels.remove(serial);
        }
    }
}