forked from yuxh/gearman-go
a8f0a04c3d
* Common race condition is fixed by identifying that Client.respHandler can be completely removed since all respHandler operations (get, put and invocation) can be moved into the Client.processLoop goroutine, meaning that zero locking is required. This race condition resulted in a deadlock that was resolved by the response timeout at the end of client.Do, returning ErrLostConn * Rare race condition is fixed by changing responseHandlerMap.get to .getAndRemove. This race condition resulted in the innerHandler for a new dtJobCreated assigned in client.Do overriding a stale older dtJobCreated request, and the newer innerHandler being removed by an older dtJobCreated in client.processLoop > client.handleInner. When the newer dtJobCreated response was received, the handler for it had already been deleted. This was resolved by the response timeout at the end of client.Do, returning ErrLostConn |
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client | ||
example | ||
worker | ||
.gitignore | ||
.travis.yml | ||
gearman.go | ||
LICENSE | ||
README.md |
Gearman-Go
This module is a Gearman API for the Go Programming Language. The protocols were written in pure Go. It contains two sub-packages:
The client package is used for sending jobs to the Gearman job server, and getting responses from the server.
"github.com/mikespook/gearman-go/client"
The worker package will help developers in developing Gearman worker service easily.
"github.com/mikespook/gearman-go/worker"
Install
Install the client package:
$ go get github.com/mikespook/gearman-go/client
Install the worker package:
$ go get github.com/mikespook/gearman-go/worker
Both of them:
$ go get github.com/mikespook/gearman-go
Usage
Worker
// Limit number of concurrent jobs execution.
// Use worker.Unlimited (0) if you want no limitation.
w := worker.New(worker.OneByOne)
w.ErrHandler = func(e error) {
log.Println(e)
}
w.AddServer("127.0.0.1:4730")
// Use worker.Unlimited (0) if you want no timeout
w.AddFunc("ToUpper", ToUpper, worker.Unlimited)
// This will give a timeout of 5 seconds
w.AddFunc("ToUpperTimeOut5", ToUpper, 5)
if err := w.Ready(); err != nil {
log.Fatal(err)
return
}
go w.Work()
Client
// ...
c, err := client.New("tcp4", "127.0.0.1:4730")
// ... error handling
defer c.Close()
c.ErrorHandler = func(e error) {
log.Println(e)
}
echo := []byte("Hello\x00 world")
echomsg, err := c.Echo(echo)
// ... error handling
log.Println(string(echomsg))
jobHandler := func(resp *client.Response) {
log.Printf("%s", resp.Data)
}
handle, err := c.Do("ToUpper", echo, client.JobNormal, jobHandler)
// ...
Branches
Version 0.x means: It is far far away from stable.
Use at your own risk!
- master current usable version
- 0.2-dev Refactoring a lot of things
- 0.1-testing Old API and some known issues, eg. issue-14
Contributors
Great thanks to all of you for your support and interest!
(Alphabetic order)
- Alex Zylman
- C.R. Kirkwood-Watts
- Damian Gryski
- Gabriel Cristian Alecu
- Graham Barr
- Ingo Oeser
- jake
- Joe Higton
- Jonathan Wills
- Kevin Darlington
- miraclesu
- Paul Mach
- Randall McPherson
- Sam Grimee
Maintainer
Open Source - MIT Software License
See LICENSE.