// handleBootstrapError cleans up after a failed bootstrap.
func handleBootstrapError(err error, ctx environs.BootstrapContext, inst instance.Instance, env environs.Environ) {
if err == nil {
return
}
logger.Errorf("bootstrap failed: %v", err)
ch := make(chan os.Signal, 1)
ctx.InterruptNotify(ch)
defer ctx.StopInterruptNotify(ch)
defer close(ch)
go func() {
for _ = range ch {
fmt.Fprintln(ctx.GetStderr(), "Cleaning up failed bootstrap")
}
}()
if inst != nil {
fmt.Fprintln(ctx.GetStderr(), "Stopping instance...")
if stoperr := env.StopInstances(inst.Id()); stoperr != nil {
logger.Errorf("cannot stop failed bootstrap instance %q: %v", inst.Id(), stoperr)
} else {
// set to nil so we know we can safely delete the state file
inst = nil
}
}
// We only delete the bootstrap state file if either we didn't
// start an instance, or we managed to cleanly stop it.
if inst == nil {
if rmerr := bootstrap.DeleteStateFile(env.Storage()); rmerr != nil {
logger.Errorf("cannot delete bootstrap state file: %v", rmerr)
}
}
}
func (suite *StateSuite) TestDeleteStateFile(c *gc.C) {
closer, stor, dataDir := envtesting.CreateLocalTestStorage(c)
defer closer.Close()
err := bootstrap.DeleteStateFile(stor)
c.Assert(err, gc.IsNil) // doesn't exist, juju don't care
_, err = bootstrap.CreateStateFile(stor)
c.Assert(err, gc.IsNil)
_, err = os.Stat(filepath.Join(dataDir, bootstrap.StateFile))
c.Assert(err, gc.IsNil)
err = bootstrap.DeleteStateFile(stor)
c.Assert(err, gc.IsNil)
_, err = os.Stat(filepath.Join(dataDir, bootstrap.StateFile))
c.Assert(err, jc.Satisfies, os.IsNotExist)
}