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Dart integration for Bazel build system

Home Page: https://pub.dev/packages/bazel_worker

License: BSD 3-Clause "New" or "Revised" License

Dart 98.40% Shell 1.60%
bazel

bazel_worker's Introduction

Tools for creating a persistent worker loop for bazel.

Usage

There are two abstract classes provided by this package, AsyncWorkerLoop and SyncWorkerLoop. These each have a performRequest method which you must implement.

Lets look at a simple example of a SyncWorkerLoop implementation:

import 'dart:io';
import 'package:bazel_worker/bazel_worker.dart';

void main() {
  // Blocks until it gets an EOF from stdin.
  SyncSimpleWorker().run();
}

class SyncSimpleWorker extends SyncWorkerLoop {
  /// Must synchronously return a [WorkResponse], since this is a
  /// [SyncWorkerLoop].
  WorkResponse performRequest(WorkRequest request) {
    File('hello.txt').writeAsStringSync('hello world!');
    return WorkResponse()..exitCode = EXIT_CODE_OK;
  }
}

And now the same thing, implemented as an AsyncWorkerLoop:

import 'dart:io';
import 'package:bazel_worker/bazel_worker.dart';

void main() {
  // Doesn't block, runs tasks async as they are received on stdin.
  AsyncSimpleWorker().run();
}

class AsyncSimpleWorker extends AsyncWorkerLoop {
  /// Must return a [Future<WorkResponse>], since this is an
  /// [AsyncWorkerLoop].
  Future<WorkResponse> performRequest(WorkRequest request) async {
    await File('hello.txt').writeAsString('hello world!');
    return WorkResponse()..exitCode = EXIT_CODE_OK;
  }
}

As you can see, these are nearly identical, it mostly comes down to the constraints on your package and personal preference which one you choose to implement.

Testing

A package:bazel_worker/testing.dart file is also provided, which can greatly assist with writing unit tests for your worker. See the test/worker_loop_test.dart test included in this package for an example of how the helpers can be used.

Features and bugs

Please file feature requests and bugs at the issue tracker.

bazel_worker's People

Contributors

athomas avatar chalin avatar davidmorgan avatar dependabot[bot] avatar devoncarew avatar domesticmouse avatar franklinyow avatar grouma avatar iinozemtsev avatar jakemac53 avatar jakobr-google avatar kevmoo avatar lrhn avatar michalt avatar munificent avatar natebosch avatar parlough avatar sigurdm avatar srawlins avatar tvolkert avatar

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bazel_worker's Issues

Allow usage of protobuf 0.10

bazel_worker has caused some version conflicts because it doesn't accept protobuf 0.10.1. Would be nice if it could be updated.

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