49 lines
1.2 KiB
Go
49 lines
1.2 KiB
Go
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package peer
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import (
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"context"
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"errors"
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)
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var (
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// ErrInvalidTopic error returned when the requested topic is not valid.
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ErrInvalidTopic = errors.New("topic not valid")
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// ErrInvalidRange error returned when max-min range is not valid.
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ErrInvalidRange = errors.New("invalid range, Min should be lower or equal to Max")
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// ErrDiscovererNotProvided error when discoverer is not being provided.
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ErrDiscovererNotProvided = errors.New("discoverer not provided")
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)
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// PublicAPI represents a set of APIs from the `web3.peer` namespace.
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type PublicAPI struct {
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s *Service
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}
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// NewAPI creates an instance of the peer API.
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func NewAPI(s *Service) *PublicAPI {
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return &PublicAPI{s: s}
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}
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// DiscoverRequest json request for peer_discover.
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type DiscoverRequest struct {
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Topic string `json:"topic"`
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Max int `json:"max"`
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Min int `json:"min"`
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}
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// Discover is an implementation of `peer_discover` or `web3.peer.discover` API.
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func (api *PublicAPI) Discover(context context.Context, req DiscoverRequest) (err error) {
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if api.s.d == nil {
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return ErrDiscovererNotProvided
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}
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if len(req.Topic) == 0 {
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return ErrInvalidTopic
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}
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if req.Max < req.Min {
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return ErrInvalidRange
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}
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return api.s.d.Discover(req.Topic, req.Max, req.Min)
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}
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