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https://github.com/fennec-framework/fennec

Fennec is a multi-threaded, robust Dart Server-Side Framework.
https://github.com/fennec-framework/fennec

backend dart http serverside webserver websocket

Last synced: about 1 month ago
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Fennec is a multi-threaded, robust Dart Server-Side Framework.

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README 

        







# Fennec is a multi-threaded, robust Dart Server-Side Framework.



# Packages



| Packages                |                                     pub                                     |

| :---------------------- | :-------------------------------------------------------------------------: |

| fennec (core framework) |                  [fennec](https://pub.dev/packages/fennec)                  |

| fennec_pg               |               [fennec_pg](https://pub.dev/packages/fennec_pg)               |

| fennec_jwt              |              [fennec_jwt](https://pub.dev/packages/fennec_jwt)              |

| fennec_socket_io_server | [fennec_socket_io_server](https://pub.dev/packages/fennec_socket_io_server) |



# installation:



1. create a simple dart project. you can use terminal for that **dart create 'projectname'**

2. install the framework from [pub.dev](https://pub.dev/packages/fennec)



# supported features by fennec:



1. Multi-threaded http request.

2. Sharing Data between Isolates if using multiples Isolates.

3. WebSocket request.

4. Handling requests with a simple and solid Router logic.

5. Handling dynamic path routes.

6. Middlewares at level of every request and Router level.

7. Templates rendering system with html extension.

8. Handling Form Data.



# make your first request:



you can make a request by creating a [Route] and add it to [Application] instance or create

a [Router] and add it to [application] instance.



# create a Router.



```dart

Router testRouter() {

  Router router = Router();



  router.get(

      path: "/test",

      requestHandler: (context, req, res) async {

        return res.ok(body: "hello world");

      });



  return router;

}



```



## Middleware



it must be a typedef **MiddlewareHandler** and must return always **MiddleWare**. here an example

how to implement it:



```dart

  Future testMiddleware(ServerContext serverContext, Request req, Response res) async {

  if (1 == 2) {

    return Next();

  }

  return Stop(res.forbidden(body: {"error": "not allowed"}).json());

}



```



## Add Middleware to a Router



you can use also define a Router Middleware by.



```dart



router.useMiddleware((

serverContext, req, res) {

if (1 == 2) {

return Next();

}

return Stop(res.forbidden(body: {"error": "not allowed"}).json());

});



```



## Sharing Data between Isolates if using multiples Isolates.



Isolate is an isolated environment, inside which there is memory allocated to it and its EventLoop. but sometimes you want to share Data between Isolates or have the same Data content on all Isolates.



Fennec let you do that by using Actor Concept.



first you need to create your Actor customized class that is a subclass of Actor.



example how to implement it.

```dart



class CustomisedActor extends Actor {

final List _strings = [];



CustomisedActor(String name) : super(name);



@override

FutureOr execute(String action,

{Map data = const {}}) {

if (action == 'insert') {

_strings.add(" new item");

} else {

if (_strings.isNotEmpty) {

_strings.removeLast();

}

}

}



@override

FutureOr get(String action, {Map data = const {}}) {

if (action == "get") {

return _strings;

}

return null;

}

}



```



after implementing of your needed subclasses of [Actor], you need just to add it/them to your [Application] by using addActor or addActors in [Application] instance.



with [ServerContext] instance you can have access to your Actor/Actors by their name and you can call get and execute methods to return some Data from Actor or execute some operations.



## dynamic routes



here is an example how to use dynamic path routes



```dart

router.get(path: "

/test/{id}

"

,

requestHandler: (

context, req, res) {

return res.ok(body: {"id": req.pathParams['id']}).json();

});



```



## File System Routing



an example how to handle files



```dart

router.get(path: "

/getFile

"

,

requestHandler: (

context, req, res) {

return res.ok(body: req.files.first.filename);

});



```



## Template with html extension



you can render also html templates with fennec Framework. you need to determine the path for your

html files. application.setViewPath(path.current + '/example');



an example how to use it.



```dart



router.get(path: "

/template

"

,

requestHandler: (

context, req, res) {

return res.render("file");

});



```



## WebSocket



WebSocket is already integrated in the core of Framework. firstly to use Websocket . you need to

make the useWebSocket object at [Application] instance true.



how to use it :



```dart

  router.ws(path: "

/connect

"

,

websocketHandler: (

context, websocket) {

/// handle new connected websocket client.

});



```



## Multithreading



Fennec Framework supports also Multithreading over isolates. To increase the number of used isolates

just call the function setNumberOfIsolates. the default number of isolates is 1



**example**



```dart



application.setNumberOfIsolates(1

);



```



## Start your Server and test your first Request



```dart

import 'package:fennec/fennec.dart';



void main(List arguments) async {

  Application application = Application();



  application.setNumberOfIsolates(1);

  application.useWebSocket(true);

  application.setPort(8000);

  application.addRouters([testRouter()]);



  ServerInfo serverInfo = await application.runServer();

  print("Server is running at Port ${serverInfo.port}");

}}

```



# deploy



- **heroku cloud:** [here](https://github.com/Fennec-Framework/heroku-buildpack) is heroku-buildpack

  for dart and inside it an example how to deploy Fennec Framework on heroku cloud for free. to test

  an example you can try this two endpoints:



    - https://fennec-deploy.herokuapp.com/healthcheck/servercheck



    - https://fennec-deploy.herokuapp.com/healthcheck



- for next days, another example for aws and goolge run will be uploaded.



# Benchmarks using [wrk](https://github.com/wg/wrk)



after running this endpoint using Fennec Framework on local machine (MacBook Pro (13-inch, 2019, Two

Thunderbolt 3 ports), we could gets this data:



- t: number of threads

- c: number of open connections

- d: duration of test



```dart

  router.get(path: "

/test

"

,

requestHandler: (

context, req, res) async {

return res.ok(body: "hello world");

});



```



**wrk -t1 -c100 -d60s http://localhost:8000/example/test**



- Running 1m test @ http://localhost:8000/example/test

- 1 threads and 100 connections

- Thread Stats Avg Stdev Max +/- Stdev

- Latency 6.63ms 1.83ms 86.51ms 96.81%

- Req/Sec 15.30k 1.38k 16.52k 91.17%

- 913472 requests in 1.00m, 177.72MB read

- Requests/sec: 15209.67

- Transfer/sec: 2.96MB



**wrk -t10 -c100 -d60s http://localhost:8000/example/test**



- Running 1m test @ http://localhost:8000/example/test

- 10 threads and 100 connections

- Thread Stats Avg Stdev Max +/- Stdev

- Latency 6.50ms 1.27ms 104.08ms 96.71%

- Req/Sec 1.55k 124.24 2.41k 87.15%

- 926903 requests in 1.00m, 180.33MB read

- Requests/sec: 15435.91

- Transfer/sec: 3.00MB



## import information



Fennec Framework after with version >= 1.0.0 doesn't support more annotations because the big

discussions about the library mirrors. as alernatives you can use Route or Route as showed in this

example.



# License



[MIT](https://github.com/Fennec-Framework/fennec/blob/master/LICENSE)