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start.go
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start.go
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package main
import (
"fmt"
"os"
"github.com/coreos/fleet/job"
)
var (
cmdStartUnit = &Command{
Name: "start",
Summary: "Instruct systemd to start one or more units in the cluster, first submitting and loading if necessary.",
Usage: "[--sign] [--no-block|--block-attempts=N] UNIT...",
Description: `Start one or many units on the cluster. Select units to start by glob matching
for units in the current working directory or matching names of previously
submitted units.
Start a single unit:
fleetctl start foo.service
Start an entire directory of units with glob matching:
fleetctl start myservice/*
You may filter suitable hosts based on metadata provided by the machine.
Machine metadata is located in the fleet configuration file.`,
Run: runStartUnit,
}
)
func init() {
cmdStartUnit.Flags.BoolVar(&sharedFlags.Sign, "sign", false, "Sign unit file signatures using local SSH identities.")
cmdStartUnit.Flags.IntVar(&sharedFlags.BlockAttempts, "block-attempts", 0, "Wait until the jobs are launched, performing up to N attempts before giving up. A value of 0 indicates no limit.")
cmdStartUnit.Flags.BoolVar(&sharedFlags.NoBlock, "no-block", false, "Do not wait until the jobs have been launched before exiting.")
}
func runStartUnit(args []string) (exit int) {
if err := lazyCreateJobs(args, sharedFlags.Sign); err != nil {
fmt.Fprintf(os.Stderr, "Error creating jobs: %v\n", err)
return 1
}
triggered, err := lazyStartJobs(args)
if err != nil {
fmt.Fprintf(os.Stderr, "Error starting jobs: %v\n", err)
return 1
}
if !sharedFlags.NoBlock {
errchan := waitForJobStates(triggered, job.JobStateLaunched, sharedFlags.BlockAttempts, os.Stdout)
for err := range errchan {
fmt.Fprintf(os.Stderr, "Error waiting for jobs: %v\n", err)
exit = 1
}
} else {
for _, jobName := range triggered {
fmt.Printf("Triggered job %s start\n", jobName)
}
}
return
}