/
rootSubscribe.go
73 lines (65 loc) · 1.75 KB
/
rootSubscribe.go
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// Copyright 2021 github.com/gagliardetto
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ws
type RootResult uint64
// SignatureSubscribe subscribes to receive notification
// anytime a new root is set by the validator.
func (cl *Client) RootSubscribe() (*RootSubscription, error) {
genSub, err := cl.subscribe(
nil,
nil,
"rootSubscribe",
"rootUnsubscribe",
func(msg []byte) (interface{}, error) {
var res RootResult
err := decodeResponseFromMessage(msg, &res)
return &res, err
},
)
if err != nil {
return nil, err
}
return &RootSubscription{
sub: genSub,
}, nil
}
type RootSubscription struct {
sub *Subscription
}
func (sw *RootSubscription) Recv() (*RootResult, error) {
select {
case d := <-sw.sub.stream:
return d.(*RootResult), nil
case err := <-sw.sub.err:
return nil, err
}
}
func (sw *RootSubscription) Err() <-chan error {
return sw.sub.err
}
func (sw *RootSubscription) Response() <-chan *RootResult {
typedChan := make(chan *RootResult, 1)
go func(ch chan *RootResult) {
// TODO: will this subscription yield more than one result?
d, ok := <-sw.sub.stream
if !ok {
return
}
ch <- d.(*RootResult)
}(typedChan)
return typedChan
}
func (sw *RootSubscription) Unsubscribe() {
sw.sub.Unsubscribe()
}