com.facebook.buck.apple.simulator.AppleSimulatorDiscovery.java Source code

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Here is the source code for com.facebook.buck.apple.simulator.AppleSimulatorDiscovery.java

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/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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.facebook.buck.apple.simulator;

import com.facebook.buck.log.Logger;
import com.facebook.buck.util.ProcessExecutor;
import com.facebook.buck.util.ProcessExecutorParams;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;

import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.util.Optional;

/**
 * Utilty class to discover state about Apple simulators installed on the host system.
 */
public class AppleSimulatorDiscovery {
    private static final Logger LOG = Logger.get(AppleSimulatorDiscovery.class);

    // Utility class, do not instantiate.
    private AppleSimulatorDiscovery() {
    }

    /**
     * Discovers information about Apple simulators installed on the system.
     */
    public static ImmutableSet<AppleSimulator> discoverAppleSimulators(ProcessExecutor processExecutor,
            Path simctlPath) throws InterruptedException, IOException {
        LOG.debug("Running xcrun simctl list to get list of simulators");
        ProcessExecutorParams processExecutorParams = ProcessExecutorParams.builder()
                .setCommand(ImmutableList.of(simctlPath.toString(), "list")).build();
        ProcessExecutor.LaunchedProcess simctlListProcess = processExecutor.launchProcess(processExecutorParams);
        ImmutableSet.Builder<AppleSimulator> simulatorsBuilder = ImmutableSet.builder();

        try (InputStreamReader stdoutReader = new InputStreamReader(simctlListProcess.getInputStream(),
                StandardCharsets.UTF_8)) {
            LOG.debug("Parsing output of xcrun simctl list...");
            SimctlListOutputParsing.parseOutputFromReader(stdoutReader, simulatorsBuilder);
        }

        ProcessExecutor.Result result = processExecutor.waitForLaunchedProcess(simctlListProcess);
        if (result.getExitCode() != 0) {
            throw new IOException(result.getMessageForUnexpectedResult("simctl list"));
        }
        ImmutableSet<AppleSimulator> simulators = simulatorsBuilder.build();
        LOG.debug("Discovered simulators: %s", simulators);
        return simulators;
    }

    /**
     * Given a simulators, looks up metadata on the supported architectures
     * and product families for that simulator (if present).
     */
    public static Optional<AppleSimulatorProfile> discoverAppleSimulatorProfile(AppleSimulator appleSimulator,
            Path iphonesimulatorPlatformRoot) throws IOException {
        Path simulatorProfilePlistPath = iphonesimulatorPlatformRoot
                .resolve(String.format("Developer/Library/CoreSimulator/Profiles/DeviceTypes/%s.simdevicetype/"
                        + "Contents/Resources/profile.plist", appleSimulator.getName()));
        LOG.debug("Parsing simulator profile plist %s", simulatorProfilePlistPath);
        try (InputStream inputStream = Files.newInputStream(simulatorProfilePlistPath)) {
            // This might return Optional.empty() if the input could not be parsed.
            return AppleSimulatorProfileParsing.parseProfilePlistStream(inputStream);
        } catch (FileNotFoundException | NoSuchFileException e) {
            LOG.warn(e, "Could not open simulator profile %s, ignoring", simulatorProfilePlistPath);
            return Optional.empty();
        }
    }
}