// configure sends a configuration change through consensus and
// then waits for it to be applied to the server. It will block
// until the change is performed or there is an error.
func (n *Node) configure(ctx context.Context, cc raftpb.ConfChange) error {
cc.ID = n.reqIDGen.Next()
ctx, cancel := context.WithCancel(ctx)
ch := n.wait.register(cc.ID, nil, cancel)
if err := n.raftNode.ProposeConfChange(ctx, cc); err != nil {
n.wait.cancel(cc.ID)
return err
}
select {
case x := <-ch:
if err, ok := x.(error); ok {
return err
}
if x != nil {
log.G(ctx).Panic("raft: configuration change error, return type should always be error")
}
return nil
case <-ctx.Done():
n.wait.cancel(cc.ID)
return ctx.Err()
}
}
// configure sends a configuration change through consensus and
// then waits for it to be applied to the server. It
// will block until the change is performed or there is an error.
func (r *raftNode) configure(ctx context.Context, cc raftpb.ConfChange) error {
cc.ID = r.idgen.Next()
ch := r.w.Register(cc.ID)
start := time.Now()
if err := r.ProposeConfChange(ctx, cc); err != nil {
// if err := r.node.ProposeConfChange(ctx, cc); err != nil {
r.w.Trigger(cc.ID, nil)
return err
}
select {
case x := <-ch:
if err, ok := x.(error); ok {
return err
}
if x != nil {
return fmt.Errorf("return type should always be error")
}
return nil
case <-ctx.Done():
r.w.Trigger(cc.ID, nil) // GC wait
return r.parseProposeCtxErr(ctx.Err(), start)
case <-r.done:
return raft.ErrStopped
}
}
// configure sends a configuration change through consensus and
// then waits for it to be applied to the server. It will block
// until the change is performed or there is an error.
func (n *Node) configure(ctx context.Context, cc raftpb.ConfChange) error {
cc.ID = n.reqIDGen.Next()
ch := n.wait.register(cc.ID, nil)
if err := n.ProposeConfChange(ctx, cc); err != nil {
n.wait.trigger(cc.ID, nil)
return err
}
select {
case x := <-ch:
if err, ok := x.(error); ok {
return err
}
if x != nil {
log.G(ctx).Panic("raft: configuration change error, return type should always be error")
}
return nil
case <-ctx.Done():
n.wait.trigger(cc.ID, nil)
return ctx.Err()
case <-n.stopCh:
return ErrStopped
}
}
// configure sends a configuration change through consensus and
// then waits for it to be applied to the server. It
// will block until the change is performed or there is an error.
func (s *EtcdServer) configure(ctx context.Context, cc raftpb.ConfChange) error {
cc.ID = s.reqIDGen.Next()
ch := s.w.Register(cc.ID)
if err := s.r.ProposeConfChange(ctx, cc); err != nil {
s.w.Trigger(cc.ID, nil)
return err
}
select {
case x := <-ch:
if err, ok := x.(error); ok {
return err
}
if x != nil {
plog.Panicf("return type should always be error")
}
return nil
case <-ctx.Done():
s.w.Trigger(cc.ID, nil) // GC wait
return parseCtxErr(ctx.Err())
case <-s.done:
return ErrStopped
}
}