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main.go
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main.go
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package main // import "fknsrs.biz/p/jobserver/cmd/jobserverc"
import (
"fmt"
"os"
"time"
"fknsrs.biz/p/jobserver"
_ "github.com/mattn/go-sqlite3"
"gopkg.in/alecthomas/kingpin.v2"
)
var (
app = kingpin.New("jobserverd", "Job server using SQLite as a backend.")
addr = app.Flag("addr", "Address of job server.").Default("127.0.0.1:2097").Envar("ADDR").String()
pingCommand = app.Command("ping", "Ping the job server.")
putCommand = app.Command("put", "Put a job into a queue, or update an existing job.")
putCommandQueue = putCommand.Arg("queue", "Queue to put the job into.").Required().String()
putCommandID = putCommand.Arg("id", "Identifier for the job.").Required().String()
putCommandContent = putCommand.Arg("content", "Content of the job.").Required().String()
putCommandPriority = putCommand.Flag("priority", "Priority of the job.").Default("0").Float64()
putCommandHoldUntil = putCommand.Flag("hold_until", "Hold the job until this time.").String()
putCommandHoldFor = putCommand.Flag("hold_for", "Hold the job for this amout of time.").Duration()
putCommandTTR = putCommand.Flag("ttr", "Time-to-run for the job.").Default("5m").Duration()
reserveCommand = app.Command("reserve", "Try to reserve a job from a queue.")
reserveCommandQueue = reserveCommand.Arg("queue", "Queue to try to reserve a job from.").Required().String()
reserveCommandWait = reserveCommand.Flag("wait", "Wait for a job to become available.").Bool()
peekCommand = app.Command("peek", "Try to peek a job from a queue.")
peekCommandQueue = peekCommand.Arg("queue", "Queue to try to peek a job from.").Required().String()
deleteCommand = app.Command("delete", "Delete a job.")
deleteCommandQueue = deleteCommand.Arg("queue", "Queue from which to delete a job.").Required().String()
deleteCommandID = deleteCommand.Arg("id", "Identifier of the job to delete.").Required().String()
)
func main() {
cmd := kingpin.MustParse(app.Parse(os.Args[1:]))
c, err := jobserver.Dial(*addr)
if err != nil {
panic(err)
}
switch cmd {
case pingCommand.FullCommand():
d, err := c.Ping()
if err != nil {
panic(err)
}
fmt.Println(d)
case putCommand.FullCommand():
holdUntil := time.Now()
switch {
case *putCommandHoldUntil != "":
t, err := time.Parse(time.RFC3339, *putCommandHoldUntil)
if err != nil {
panic(err)
}
holdUntil = t
case *putCommandHoldFor != time.Duration(0):
holdUntil = holdUntil.Add(*putCommandHoldFor)
}
if err := c.Put(*putCommandQueue, *putCommandID, *putCommandContent, *putCommandPriority, holdUntil, *putCommandTTR); err != nil {
panic(err)
}
case reserveCommand.FullCommand():
var j *jobserver.Job
var err error
if *reserveCommandWait {
j, err = c.ReserveWait(*reserveCommandQueue)
} else {
j, err = c.Reserve(*reserveCommandQueue)
}
if err != nil {
if err == jobserver.ErrNoJobs {
fmt.Println("no jobs")
return
}
panic(err)
}
fmt.Printf("[%s] %#v %s %s\n", j.Queue, j.Priority, j.TTR, j.ID)
fmt.Println(j.Content)
case peekCommand.FullCommand():
j, err := c.Peek(*peekCommandQueue)
if err != nil {
if err == jobserver.ErrNoJobs {
fmt.Println("no jobs")
return
}
panic(err)
}
fmt.Printf("[%s] %#v %s %s\n", j.Queue, j.Priority, j.TTR, j.ID)
fmt.Println(j.Content)
case deleteCommand.FullCommand():
if err := c.Delete(*deleteCommandQueue, *deleteCommandID); err != nil {
if err == jobserver.ErrNotFound {
fmt.Println("not found")
return
}
panic(err)
}
}
}