使用 Dart 开发 Windows服务

提供将 Dart 程序作为 Windows Service 在后台长期运行的能力

Github存储库 github.com/au-top/dart…

包含 service_base WindowsServiceDLL dart_windows_service_support 三个部分

service_base github.com/tromgy/serv… 项目提供一个包装了后的 Windows Service API 编译成 lib

WindowsServiceDLL 导入 service_base.lib 并且进一步封装成 对 Dart友好的 C API 后编译到 dll

dart_windows_service_support 使用 dart:ffi 访问 WindowsServiceDLL 中的API 并且封装成 Dart API

示例

示例的全局变量

final dllPath = normalize(join(dirname(Platform.script.toFilePath()),"../../../dll/WindowsServiceDLL.dll")); 
const serviceName = "dartTestService";

安装服务 DartConnectServiceDLL.dartInstallService

void main(List<String> args) {
  final dartConnectServiceDLL = DartConnectServiceDLL(dllPath);
  final servicePath = join(Directory.current.path, "service.exe");

  dartConnectServiceDLL.dartInstallService(
    serviceName.toNativeUtf16().cast<Uint16>(),
    serviceName.toNativeUtf16().cast<Uint16>(),
    "this is a dart test service".toNativeUtf16().cast<Uint16>(),
    "".toNativeUtf16().cast<Uint16>(),
    0x2,
    "".toNativeUtf16().cast<Uint16>(),
    Pointer.fromAddress(0),
    Pointer.fromAddress(0),

    /// path
    servicePath.toNativeUtf16().cast<Uint16>(),
    true,
    1,
    Pointer.fromAddress(0),
  );
}

服务本体 DartConnectServiceDLL.dartConnectService

void main(List<String> args) async {
  final dartConnectServiceDLL = DartConnectServiceDLL(dllPath);
  await Isolate.spawn(run, 'message');
  dartConnectServiceDLL.dartConnectService(serviceName.toNativeUtf16().cast<Uint16>());
}

void run(String message) {
  Timer.periodic(Duration(seconds: 1), (timer) async {
    final f = File("d:/a.txt");
    await f.create();
    await f.writeAsString("${await f.readAsString()}1");
  });
}

卸载服务 DartConnectServiceDLL.dartUninstallService

void main(List<String> args) {
  final dartConnectServiceDLL = DartConnectServiceDLL(dllPath);
  dartConnectServiceDLL.dartUninstallService(serviceName.toNativeUtf16().cast<Uint16>());
}