Modular otto
Motto provide a Nodejs like module environment to run javascript files in golang.
go get github.com/ddliu/mottovar _ = require('underscore');
var data = require('./data.json'); // [3, 2, 1, 4, 6]
module.exports = _.min(data);package main
import (
"github.com/ddliu/motto"
_ "github.com/ddliu/motto/underscore"
)
func main() {
motto.Run("path/to/index.js")
}You can also install the motto command line tool to run it directly:
go install github.com/ddliu/motto/motto
motto path/to/index.jsThe module environment is almost capable with Nodejs spec.
Some Nodejs modules(without core module dependencies) can be used directly in Motto.
Motto can be extended with addons, below is an example addon which implement part of the "fs" module of Nodejs:
package fs
import (
"github.com/ddliu/motto"
"github.com/robertkrimen/otto"
)
func fsModuleLoader(vm *motto.Motto) (otto.Value, error) {
fs, _ := vm.Object(`({})`)
fs.Set("readFileSync", func(call otto.FunctionCall) otto.Value {
filename, _ := call.Argument(0).ToString()
bytes, err := ioutil.ReadFile(filename)
if err != nil {
return otto.UndefinedValue()
}
v, _ := call.Otto.ToValue(string(bytes))
return v
})
return vm.ToValue(fs)
}
func init() {
motto.AddModule("fs", fsModuleLoader)
}After import this package, you can require it directly in your js file:
var fs = require('fs');
var content = fs.readFileSync('/path/to/data');nodego implements some features and core modules of Nodejs.
Simple benchmark shows below for furthur performance optimize:
strace -c -Ttt motto tests/index.js
strace -c -Ttt node tests/index.jsMotto:
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
20.20 0.000144 2 59 rt_sigaction
15.71 0.000112 7 15 mmap
11.92 0.000085 11 8 futex
10.10 0.000072 6 13 4 stat
7.43 0.000053 7 8 read
5.89 0.000042 21 2 clone
5.75 0.000041 10 4 open
4.77 0.000034 7 5 rt_sigprocmask
4.63 0.000033 33 1 execve
3.23 0.000023 12 2 write
2.24 0.000016 4 4 fstat
1.82 0.000013 3 4 close
1.82 0.000013 13 1 sched_getaffinity
1.68 0.000012 12 1 sched_yield
0.98 0.000007 7 1 munmap
0.98 0.000007 7 1 arch_prctl
0.42 0.000003 3 1 getcwd
0.42 0.000003 3 1 sigaltstack
------ ----------- ----------- --------- --------- ----------------
100.00 0.000713 131 4 total
Nodejs:
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
20.15 0.000636 7 92 mmap
17.78 0.000561 16 36 munmap
13.97 0.000441 18 24 read
7.73 0.000244 7 35 mprotect
7.70 0.000243 15 16 brk
7.32 0.000231 7 34 1 futex
4.56 0.000144 7 22 open
3.61 0.000114 5 22 15 ioctl
2.15 0.000068 3 21 close
2.03 0.000064 3 21 fstat
2.00 0.000063 5 14 14 access
1.58 0.000050 4 12 lstat
1.24 0.000039 8 5 write
1.24 0.000039 6 7 rt_sigaction
1.05 0.000033 6 6 2 stat
0.89 0.000028 28 1 readlink
0.76 0.000024 5 5 rt_sigprocmask
0.70 0.000022 6 4 getcwd
0.67 0.000021 11 2 pipe2
0.63 0.000020 20 1 clone
0.38 0.000012 6 2 getrlimit
0.29 0.000009 9 1 epoll_create1
0.25 0.000008 8 1 eventfd2
0.22 0.000007 7 1 clock_gettime
0.22 0.000007 4 2 epoll_ctl
0.19 0.000006 6 1 gettid
0.19 0.000006 6 1 set_tid_address
0.19 0.000006 6 1 set_robust_list
0.13 0.000004 4 1 execve
0.10 0.000003 3 1 arch_prctl
0.10 0.000003 3 1 epoll_wait
------ ----------- ----------- --------- --------- ----------------
100.00 0.003156 393 32 total
Initial release
Make module capable with Nodejs
Rewrite module.
Make it easier to write addons.
Add underscore addon as an example.
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