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single.go
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single.go
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package commands
import (
"github.com/codegangsta/cli"
"os"
"time"
log "github.com/Sirupsen/logrus"
"gitlab.com/gitlab-org/gitlab-ci-multi-runner/common"
"gitlab.com/gitlab-org/gitlab-ci-multi-runner/network"
"os/signal"
"syscall"
)
type RunSingleCommand struct {
common.RunnerConfig
network common.Network
}
func waitForInterrupts(finished *bool, abortSignal chan os.Signal, doneSignal chan int) {
signals := make(chan os.Signal)
signal.Notify(signals, os.Interrupt, syscall.SIGTERM, syscall.SIGQUIT)
interrupt := <-signals
if finished != nil {
*finished = true
}
// request stop, but wait for force exit
for interrupt == syscall.SIGQUIT {
log.Warningln("Requested quit, waiting for builds to finish")
interrupt = <-signals
}
log.Warningln("Requested exit:", interrupt)
go func() {
for {
abortSignal <- interrupt
}
}()
select {
case newSignal := <-signals:
log.Fatalln("forced exit:", newSignal)
case <-time.After(common.ShutdownTimeout * time.Second):
log.Fatalln("shutdown timedout")
case <-doneSignal:
}
}
func (r *RunSingleCommand) processBuild(data common.ExecutorData, abortSignal chan os.Signal) (err error) {
buildData, healthy := r.network.GetBuild(r.RunnerConfig)
if !healthy {
log.Println("Runner is not healthy!")
select {
case <-time.After(common.NotHealthyCheckInterval * time.Second):
case <-abortSignal:
}
return
}
if buildData == nil {
select {
case <-time.After(common.CheckInterval * time.Second):
case <-abortSignal:
}
return
}
config := common.NewConfig()
newBuild := common.Build{
GetBuildResponse: *buildData,
Runner: &r.RunnerConfig,
BuildAbort: abortSignal,
ExecutorData: data,
}
trace := r.network.ProcessBuild(r.RunnerConfig, buildData.ID)
defer trace.Fail(err)
err = newBuild.Run(config, trace)
return
}
func (r *RunSingleCommand) Execute(c *cli.Context) {
if len(r.URL) == 0 {
log.Fatalln("Missing URL")
}
if len(r.Token) == 0 {
log.Fatalln("Missing Token")
}
if len(r.Executor) == 0 {
log.Fatalln("Missing Executor")
}
executorProvider := common.GetExecutor(r.Executor)
if executorProvider == nil {
log.Fatalln("Uknown executor:", r.Executor)
}
log.Println("Starting runner for", r.URL, "with token", r.ShortDescription(), "...")
finished := false
abortSignal := make(chan os.Signal)
doneSignal := make(chan int, 1)
go waitForInterrupts(&finished, abortSignal, doneSignal)
for !finished {
data, err := executorProvider.Acquire(&r.RunnerConfig)
if err != nil {
log.Warningln("Executor update:", err)
}
r.processBuild(data, abortSignal)
executorProvider.Release(&r.RunnerConfig, data)
}
doneSignal <- 0
}
func init() {
common.RegisterCommand2("run-single", "start single runner", &RunSingleCommand{
network: &network.GitLabClient{},
})
}