func newDeployer(st *state.State, w *state.UnitsWatcher, dataDir string) *deployer.Deployer {
info := &state.Info{
EntityName: w.EntityName(),
Addrs: st.Addrs(),
CACert: st.CACert(),
}
mgr := newDeployManager(st, info, dataDir)
return deployer.NewDeployer(st, mgr, w)
}
// NewDeployer returns a Deployer that deploys and recalls unit agents via
// mgr, according to membership and lifecycle changes notified by w.
func NewDeployer(st *state.State, mgr Manager, w *state.UnitsWatcher) *Deployer {
d := &Deployer{
st: st,
mgr: mgr,
entityName: w.EntityName(),
deployed: map[string]bool{},
}
go func() {
defer d.tomb.Done()
defer watcher.Stop(w, &d.tomb)
d.tomb.Kill(d.loop(w))
}()
return d
}