forked from megamsys/vertice
/
runner.go
113 lines (99 loc) · 3.37 KB
/
runner.go
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/*
** Copyright [2013-2015] [Megam Systems]
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
package run
import (
"fmt"
"time"
log "github.com/Sirupsen/logrus"
pp "github.com/megamsys/libgo/cmd"
"github.com/tj/go-spin"
)
const logo = `
,--. ██╗ ██╗███████╗██████╗ ████████╗██╗ ██████╗███████╗
\ _\_ ██║ ██║██╔════╝██╔══██╗╚══██╔══╝██║██╔════╝██╔════╝
_\/_|_\____.'\ ██║ ██║█████╗ ██████╔╝ ██║ ██║██║ █████╗
-(___.--._____( ╚██╗ ██╔╝██╔══╝ ██╔══██╗ ██║ ██║██║ ██╔══╝
\ \ ╚████╔╝ ███████╗██║ ██║ ██║ ██║╚██████╗███████╗
\ \ ╚═══╝ ╚══════╝╚═╝ ╚═╝ ╚═╝ ╚═╝ ╚═════╝╚══════╝
'--'
`
// Command represents the command executed by "vertice start".
type Command struct {
Version string
Branch string
Commit string
CPUProfile string
MemProfile string
closing chan struct{}
Closed chan struct{}
Server *Server
}
// NewCommand return a new instance of Command.
func NewCommand() *Command {
return &Command{
CPUProfile: "cpuprof",
MemProfile: "memprof",
closing: make(chan struct{}),
Closed: make(chan struct{}),
}
}
//Short form for "Megam daemon - Megd" .We start the vertice daemon.
func (cmd *Command) Megd(c *Config, version string) error {
cmd.funSpin(pp.Colorfy(logo, "green", "", "bold"), cmd.Version)
// Create server from config and start it.
s, err := NewServer(c, cmd.Version)
if err != nil {
return fmt.Errorf("create server: %s", err)
}
s.CPUProfile = cmd.CPUProfile
s.MemProfile = cmd.MemProfile
if err := s.Open(); err != nil {
return fmt.Errorf("open server: %s", err)
}
cmd.Server = s
// Begin monitoring the server's error channel.
go cmd.monitorServerErrors()
return nil
}
// Close shuts down the server.
func (cmd *Command) Close() error {
defer close(cmd.Closed)
close(cmd.closing)
if cmd.Server != nil {
return cmd.Server.Close()
}
return nil
}
func (cmd *Command) monitorServerErrors() {
for {
select {
case err := <-cmd.Server.Err():
log.Errorf(err.Error())
case <-cmd.closing:
return
}
}
}
//Show a spinner until our services start.
func (cmd *Command) funSpin(vers string, logo string) {
fmt.Printf("%s %s", vers, logo)
s := spin.New()
for i := 0; i < 10; i++ {
fmt.Printf("\r%s", fmt.Sprintf("%s %s", pp.Colorfy("starting", "green", "", "bold"), s.Next()))
time.Sleep(3 * time.Millisecond)
}
fmt.Printf("\n")
}