RoadRunner

RoadRunner is an open source (MIT licensed), high-performance PSR-7 PHP application server, load balancer and process manager. It supports service model with ability to extend it's functionality on a project basis.

Features:

PSR-7 HTTP server (file uploads, error handling, static files, hot reload, middlewares, event listeners)
extendable service model (plus PHP compatible RPC server)
no external PHP dependencies, drop-in (based on Goridge)
load balancer, process manager and task pipeline
frontend agnostic (queue, REST, PSR-7, async php, etc)
works over TCP, unix sockets and standard pipes
automatic worker replacement and safe PHP process destruction
worker lifecycle management (create/allocate/destroy timeouts)
payload context and body
control over max jobs per worker
protocol, worker and job level error management (including PHP errors)
memory leak failswitch
very fast (~250k rpc calls per second on Ryzen 1700X over 16 threads)
works on Windows

Getting Started:

Downloading RoadRunner

The easiest way to get the latest RoadRunner version is to use one of the pre-built release binaries which are available for OSX, Linux, FreeBSD, and Windows. Instructions for using these binaries are on the GitHub releases page.

Building RoadRunner

RoadRunner can be compiled on Linux, OSX, Windows and other 64 bit environments as the only requirement is Go 1.8+ itself.

To build:

$ make

To test:

$ make test

Using RoadRunner:

In order to use RoadRunner you only have to place .rr.yaml file in a root of your php project:

# rpc bus allows php application and external clients to talk to rr services.
rpc:
  # enable rpc server
  enable: true

  # rpc connection DSN. Supported TCP and Unix sockets.
  listen: tcp://127.0.0.1:6001

# http service configuration.
http:
  # set to false to disable http server.
  enable:     true

  # http host to listen.
  address:    0.0.0.0:8080

  # max POST request size, including file uploads in MB.
  maxRequest: 200

  # file upload configuration.
  uploads:
    # list of file extensions which are forbidden for uploading.
    forbid: [".php", ".exe", ".bat"]

  # http worker pool configuration.
  workers:
    # php worker command.
    command:  "php psr-worker.php pipes"

    # connection method (pipes, tcp://:9000, unix://socket.unix).
    relay:    "pipes"

    # worker pool configuration.
    pool:
      # number of workers to be serving.
      numWorkers: 4

      # maximum jobs per worker, 0 - unlimited.
      maxJobs:  0

      # for how long pool should attempt to allocate free worker (request timeout). Nanoseconds atm. (60s)
      allocateTimeout: 60000000000

      # amount of time given to worker to gracefully destruct itself. Nanoseconds atm. (30s)
      destroyTimeout:  30000000000

# static file serving.
static:
  # serve http static files
  enable:  true

  # root directory for static file (http would not serve .php and .htaccess files).
  dir:   "public"

  # list of extensions to forbid for serving.
  forbid: [".php", ".htaccess"]

You can use json or any config type supported by spf13/viper.

Where psr-worker.php:

$psr7 = new RoadRunner\PSR7Client(new RoadRunner\Worker($relay));

while ($req = $psr7->acceptRequest()) {
    try {
        $resp = new \Zend\Diactoros\Response()
        $resp->getBody()->write("hello world");

        $psr7->respond($resp);
    } catch (\Throwable $e) {
        $psr7->getWorker()->error((string)$e);
    }
}

Check how to init relay here.

Working with RoadRunner service:

RoadRunner application can be started by calling simple command from the root of your PHP application.

$ rr serve -v

You can also run RR in debug mode to view all incoming requests.

$ rr serve -d -v

You can force RR service to reload it's http workers.

$ rr http:reset

You can attach this command as file watcher in your IDE.

To view status of all active workers in interactive mode.

$ rr http:workers -i

+---------+-----------+---------+---------+--------------------+
|   PID   |  STATUS   |  EXECS  | MEMORY  |      CREATED       |
+---------+-----------+---------+---------+--------------------+
|    9440 | ready     |  42,320 | 31 MB   | 22 minutes ago     |
|    9447 | ready     |  42,329 | 31 MB   | 22 minutes ago     |
|    9454 | ready     |  42,306 | 31 MB   | 22 minutes ago     |
|    9461 | ready     |  42,316 | 31 MB   | 22 minutes ago     |
+---------+-----------+---------+---------+--------------------+

Standalone Usage:

You can also use RoadRunner as library in order to drive your application without any additional protocol at top of it.

srv := NewServer(
    &ServerConfig{
        Command: "php client.php echo pipes",
        Relay:   "pipes",
        Pool: &Config{
            NumWorkers:      int64(runtime.NumCPU()),
            AllocateTimeout: time.Second,
            DestroyTimeout:  time.Second,
        },
    })
defer srv.Stop()

srv.Start()

res, err := srv.Exec(&Payload{Body: []byte("hello")})

<?php
/**
 * @var Goridge\RelayInterface $relay
 */

use Spiral\Goridge;
use Spiral\RoadRunner;

$rr = new RoadRunner\Worker($relay);

while ($body = $rr->receive($context)) {
    try {
        $rr->send((string)$body, (string)$context);
    } catch (\Throwable $e) {
        $rr->error((string)$e);
    }
}