Resolver is also a resolver builder. It's build() function always returns itself.
type Resolver struct {
// BuildCallback is called when the Build method is called. Must not be
// nil. Must not be changed after the resolver may be built.
BuildCallback func(resolver.Target, resolver.ClientConn, resolver.BuildOptions)
// UpdateStateCallback is called when the UpdateState method is called on
// the resolver. The value passed as argument to this callback is the value
// returned by the resolver.ClientConn. Must not be nil. Must not be
// changed after the resolver may be built.
UpdateStateCallback func(err error)
// ResolveNowCallback is called when the ResolveNow method is called on the
// resolver. Must not be nil. Must not be changed after the resolver may
// be built.
ResolveNowCallback func(resolver.ResolveNowOptions)
// CloseCallback is called when the Close method is called. Must not be
// nil. Must not be changed after the resolver may be built.
CloseCallback func()
CC resolver.ClientConn
// contains filtered or unexported fields
}
func NewBuilderWithScheme(scheme string) *Resolver
NewBuilderWithScheme creates a new manual resolver builder with the given scheme. Every instance of the manual resolver may only ever be used with a single grpc.ClientConn. Otherwise, bad things will happen.
func (r *Resolver) Build(target resolver.Target, cc resolver.ClientConn, opts resolver.BuildOptions) (resolver.Resolver, error)
Build returns itself for Resolver, because it's both a builder and a resolver.
func (r *Resolver) Close()
Close is a noop for Resolver.
func (r *Resolver) InitialState(s resolver.State)
InitialState adds initial state to the resolver so that UpdateState doesn't need to be explicitly called after Dial.
func (r *Resolver) ReportError(err error)
ReportError calls CC.ReportError.
func (r *Resolver) ResolveNow(o resolver.ResolveNowOptions)
ResolveNow is a noop for Resolver.
func (r *Resolver) Scheme() string
Scheme returns the manual resolver's scheme.
func (r *Resolver) UpdateState(s resolver.State)
UpdateState calls CC.UpdateState.