Hilbish/job.go

137 lines
2.1 KiB
Go

package main
import (
"sync"
"os"
"github.com/yuin/gopher-lua"
)
var jobs *jobHandler
type job struct {
cmd string
running bool
id int
pid int
exitCode int
proc *os.Process
}
func (j *job) start(pid int) {
j.pid = pid
j.running = true
hooks.Em.Emit("job.start", j.lua())
}
func (j *job) stop() {
// finish will be called in exec handle
j.proc.Kill()
}
func (j *job) finish() {
j.running = false
hooks.Em.Emit("job.done", j.lua())
}
func (j *job) setHandle(handle *os.Process) {
j.proc = handle
}
func (j *job) lua() *lua.LTable {
// returns lua table for job
// because userdata is gross
jobFuncs := map[string]lua.LGFunction{
"stop": j.luaStop,
}
luaJob := l.SetFuncs(l.NewTable(), jobFuncs)
l.SetField(luaJob, "cmd", lua.LString(j.cmd))
l.SetField(luaJob, "running", lua.LBool(j.running))
l.SetField(luaJob, "id", lua.LNumber(j.id))
l.SetField(luaJob, "pid", lua.LNumber(j.pid))
l.SetField(luaJob, "exitCode", lua.LNumber(j.exitCode))
return luaJob
}
func (j *job) luaStop(L *lua.LState) int {
if j.running {
j.stop()
}
return 0
}
type jobHandler struct {
jobs map[int]*job
latestID int
mu *sync.RWMutex
}
func newJobHandler() *jobHandler {
return &jobHandler{
jobs: make(map[int]*job),
latestID: 0,
mu: &sync.RWMutex{},
}
}
func (j *jobHandler) add(cmd string) {
j.mu.Lock()
defer j.mu.Unlock()
j.latestID++
j.jobs[j.latestID] = &job{
cmd: cmd,
running: false,
id: j.latestID,
}
}
func (j *jobHandler) getLatest() *job {
j.mu.RLock()
defer j.mu.RUnlock()
return j.jobs[j.latestID]
}
func (j *jobHandler) loader(L *lua.LState) *lua.LTable {
jobFuncs := map[string]lua.LGFunction{
"all": j.luaAllJobs,
"get": j.luaGetJob,
}
luaJob := l.SetFuncs(l.NewTable(), jobFuncs)
return luaJob
}
func (j *jobHandler) luaGetJob(L *lua.LState) int {
j.mu.RLock()
defer j.mu.RUnlock()
jobID := L.CheckInt(1)
job := j.jobs[jobID]
if job != nil {
return 0
}
L.Push(job.lua())
return 1
}
func (j *jobHandler) luaAllJobs(L *lua.LState) int {
j.mu.RLock()
defer j.mu.RUnlock()
jobTbl := L.NewTable()
for id, job := range j.jobs {
jobTbl.Insert(id, job.lua())
}
L.Push(jobTbl)
return 1
}