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runner.go
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runner.go
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package gsrunner
import (
"errors"
"flag"
"os"
"path/filepath"
"github.com/gsdocker/gsconfig"
"github.com/gsdocker/gserrors"
"github.com/gsdocker/gslogger"
"github.com/gsrpc/gorpc"
)
// Error list
var (
ErrFlag = errors.New("flag error")
ErrConfig = errors.New("config load error")
ErrRegistry = errors.New("load registry file error")
)
// Runner gsdocker services runner
type Runner interface {
gslogger.Log
FlagString(name string, fullname string, defaultVal string, description string) Runner
FlagInt(name string, fullname string, defaultVal int64, description string) Runner
FlagUint(name string, fullname string, defaultVal uint64, description string) Runner
FlagFloat32(name string, fullname string, defaultVal float32, description string) Runner
FlagFloat64(name string, fullname string, defaultVal float64, description string) Runner
Seconds(name string, fullname string, defaultVal uint64, description string) Runner
Milliseconds(name string, fullname string, defaultVal uint64, description string) Runner
Run(main func(runner Runner))
}
type _Runner struct {
gslogger.Log
flagString map[string]*string
flagInt map[string]*int64
flagUint map[string]*uint64
flagFloat32 map[string]*float64
flagFloat64 map[string]*float64
flagSecond map[string]*uint64
flagMilliseconds map[string]*uint64
fullname map[string]string
}
// New create new gsdocker runner
func New(name string) Runner {
runner := &_Runner{
Log: gslogger.Get(name),
flagString: make(map[string]*string),
flagInt: make(map[string]*int64),
flagUint: make(map[string]*uint64),
flagFloat32: make(map[string]*float64),
flagFloat64: make(map[string]*float64),
flagSecond: make(map[string]*uint64),
flagMilliseconds: make(map[string]*uint64),
fullname: make(map[string]string),
}
runner.FlagString(
"log", "gsrunner.log", "", "the gsrunner log root path",
).FlagString(
"level", "gsrunner.log.level", "", "the gsrunner log level",
).FlagString(
"pprof", "gsrunner.pprof", "", "set gsrunner pprof listen address",
).FlagString(
"config", "gsrunner.config", "", "set gsrunner config file",
).FlagString(
"registry", "gsrunner.registry", "", "set the rpc services registry file",
)
return runner
}
func (runner *_Runner) checkName(name, fullname string) {
if _, ok := runner.fullname[name]; ok {
gserrors.Panicf(ErrFlag, "duplicate flag name :%s", name)
}
for _, v := range runner.fullname {
if v == fullname {
gserrors.Panicf(ErrFlag, "duplicate flag fullname :%s", fullname)
}
}
runner.fullname[name] = fullname
}
func (runner *_Runner) FlagString(name string, fullname string, defaultVal string, description string) Runner {
runner.checkName(name, fullname)
runner.flagString[name] = flag.String(name, defaultVal, description)
return runner
}
func (runner *_Runner) FlagInt(name string, fullname string, defaultVal int64, description string) Runner {
runner.checkName(name, fullname)
runner.flagInt[name] = flag.Int64(name, defaultVal, description)
return runner
}
func (runner *_Runner) FlagUint(name string, fullname string, defaultVal uint64, description string) Runner {
runner.checkName(name, fullname)
runner.flagUint[name] = flag.Uint64(name, defaultVal, description)
return runner
}
func (runner *_Runner) FlagFloat32(name string, fullname string, defaultVal float32, description string) Runner {
runner.checkName(name, fullname)
runner.flagFloat32[name] = flag.Float64(name, float64(defaultVal), description)
return runner
}
func (runner *_Runner) FlagFloat64(name string, fullname string, defaultVal float64, description string) Runner {
runner.checkName(name, fullname)
runner.flagFloat64[name] = flag.Float64(name, defaultVal, description)
return runner
}
func (runner *_Runner) Seconds(name string, fullname string, defaultVal uint64, description string) Runner {
runner.checkName(name, fullname)
runner.flagSecond[name] = flag.Uint64(name, defaultVal, description)
return runner
}
func (runner *_Runner) Milliseconds(name string, fullname string, defaultVal uint64, description string) Runner {
runner.checkName(name, fullname)
runner.flagMilliseconds[name] = flag.Uint64(name, defaultVal, description)
return runner
}
func (runner *_Runner) Run(main func(runner Runner)) {
defer func() {
if e := recover(); e != nil {
runner.E("catch unknown exception\n\t%s", e)
}
runner.I("service stopped.")
gslogger.Join()
}()
flag.Parse()
configpath := *runner.flagString["config"]
runner.D("config file path :%s", configpath)
if configpath != "" {
switch filepath.Ext(configpath) {
case ".json":
if err := gsconfig.LoadJSON(configpath); err != nil {
gserrors.Panicf(ErrConfig, "load config file error :%s", configpath)
}
default:
runner.W("can't load config file :%s", configpath)
}
}
for k, v := range runner.flagString {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagInt {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagUint {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagFloat32 {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagFloat64 {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagSecond {
gsconfig.Update(runner.fullname[k], *v)
}
for k, v := range runner.flagMilliseconds {
gsconfig.Update(runner.fullname[k], *v)
}
logroot := gsconfig.String("gsrunner.log", "")
runner.D("log root path :%s", logroot)
loglevel := gsconfig.String("gsrunner.log.level", "")
runner.D("log level :%s", loglevel)
registryFile := gsconfig.String("gsrunner.registry", "")
runner.D("registry file:%s", registryFile)
if logroot != "" {
fullpath, _ := filepath.Abs(logroot)
dir := filepath.Dir(fullpath)
name := filepath.Base(fullpath)
gslogger.SetLogDir(dir)
gslogger.NewSink(gslogger.NewFilelog("gschat-mailhub", name, gsconfig.Int64("gschat.mailhub.log.maxsize", 0)))
}
if loglevel != "" {
gslogger.NewFlags(gslogger.ParseLevel(loglevel))
}
if registryFile != "" {
runner.I("load gsrpc services registry file :%s", registryFile)
file, err := os.Open(registryFile)
if err != nil {
gserrors.Panicf(err, "open registry file error :%s", registryFile)
}
gorpc.RegistryLoad(file, registryFile)
runner.I("load gsrpc services registry file :%s -- success", registryFile)
}
runner.I("service started.")
main(runner)
}