package main import "github.com/go-check/check" func (s *DockerSwarmSuite) getDaemon(c *check.C, nodeID string) *SwarmDaemon { s.daemonsLock.Lock() defer s.daemonsLock.Unlock() for _, d := range s.daemons { if d.NodeID == nodeID { return d } } c.Fatalf("could not find node with id: %s", nodeID) return nil } // nodeCmd executes a command on a given node via the normal docker socket func (s *DockerSwarmSuite) nodeCmd(c *check.C, id, cmd string, args ...string) (string, error) { return s.getDaemon(c, id).Cmd(cmd, args...) }