build_daemon 4.1.0

A daemon for running Dart builds.

example/example.dart

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'dart:io';
import 'dart:math';

import 'package:build_daemon/client.dart';
import 'package:build_daemon/data/build_target.dart';
import 'package:path/path.dart' as p;

void main(List<String> args) async {
  BuildDaemonClient client;
  final workingDirectory = p.normalize(
    p.join('${Directory.current.path}/../example'),
  );

  try {
    // First we connect to the daemon. This will start one if one is not
    // currently running.
    client = await BuildDaemonClient.connect(workingDirectory, [
      'dart',
      'run',
      'build_runner',
      'daemon',
    ], logHandler: print);
  } catch (e) {
    if (e is VersionSkew) {
      print(
        'Version skew. Please disconnect all other clients '
        'before trying to start a new one.',
      );
    } else if (e is OptionsSkew) {
      print(
        'Options skew. Please disconnect all other clients '
        'before trying to start a new one.',
      );
    } else {
      print('Unexpected error: $e');
    }

    exit(1);
  }
  print('Connected to Dart Build Daemon');

  // Next we register a build target (directory) to build.
  // Note this will not cause a build to occur unless there are relevant file
  // changes.
  if (Random().nextBool()) {
    client.registerBuildTarget(
      DefaultBuildTarget(
        (b) =>
            b
              ..target = 'web'
              ..outputLocation =
                  OutputLocation(
                    (b) =>
                        b
                          ..output = 'web_output'
                          ..useSymlinks = false
                          ..hoist = true,
                  ).toBuilder()
              ..blackListPatterns.replace([RegExp(r'.*_test\.dart$')]),
      ),
    );
    print('Registered example web target...');
  } else {
    client.registerBuildTarget(
      DefaultBuildTarget(
        (b) =>
            b
              ..target = 'test'
              ..outputLocation =
                  OutputLocation(
                    (b) =>
                        b
                          ..output = 'test_output'
                          ..useSymlinks = true
                          ..hoist = false,
                  ).toBuilder(),
      ),
    );

    print('Registered test target...');
  }

  // Handle events coming from the daemon.
  client.buildResults.listen((status) => print('BUILD STATUS: $status'));

  // Force a build of all registered targets.
  client.startBuild();

  await client.finished;
}