mirror of
https://github.com/ipfs/kubo.git
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126 lines
2.5 KiB
Go
126 lines
2.5 KiB
Go
package httpapi
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import (
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"bytes"
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"context"
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"encoding/json"
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"io"
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"github.com/ipfs/interface-go-ipfs-core"
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caopts "github.com/ipfs/interface-go-ipfs-core/options"
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"github.com/libp2p/go-libp2p-peer"
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)
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type PubsubAPI HttpApi
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func (api *PubsubAPI) Ls(ctx context.Context) ([]string, error) {
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var out struct {
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Strings []string
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}
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if err := api.core().request("pubsub/ls").Exec(ctx, &out); err != nil {
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return nil, err
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}
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return out.Strings, nil
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}
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func (api *PubsubAPI) Peers(ctx context.Context, opts ...caopts.PubSubPeersOption) ([]peer.ID, error) {
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options, err := caopts.PubSubPeersOptions(opts...)
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if err != nil {
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return nil, err
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}
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var out struct {
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Strings []string
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}
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if err := api.core().request("pubsub/peers", options.Topic).Exec(ctx, &out); err != nil {
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return nil, err
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}
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res := make([]peer.ID, len(out.Strings))
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for i, sid := range out.Strings {
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id, err := peer.IDB58Decode(sid)
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if err != nil {
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return nil, err
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}
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res[i] = id
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}
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return res, nil
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}
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func (api *PubsubAPI) Publish(ctx context.Context, topic string, message []byte) error {
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return api.core().request("pubsub/pub", topic).
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FileBody(bytes.NewReader(message)).
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Exec(ctx, nil)
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}
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type pubsubSub struct {
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io.Closer
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dec *json.Decoder
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}
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type pubsubMessage struct {
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JFrom []byte `json:"from,omitempty"`
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JData []byte `json:"data,omitempty"`
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JSeqno []byte `json:"seqno,omitempty"`
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JTopicIDs []string `json:"topicIDs,omitempty"`
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from peer.ID
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}
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func (msg *pubsubMessage) From() peer.ID {
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return msg.from
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}
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func (msg *pubsubMessage) Data() []byte {
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return msg.JData
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}
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func (msg *pubsubMessage) Seq() []byte {
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return msg.JSeqno
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}
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func (msg *pubsubMessage) Topics() []string {
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return msg.JTopicIDs
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}
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func (s *pubsubSub) Next(ctx context.Context) (iface.PubSubMessage, error) {
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// TODO: handle ctx
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var msg pubsubMessage
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if err := s.dec.Decode(&msg); err != nil {
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return nil, err
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}
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var err error
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msg.from, err = peer.IDFromBytes(msg.JFrom)
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return &msg, err
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}
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func (api *PubsubAPI) Subscribe(ctx context.Context, topic string, opts ...caopts.PubSubSubscribeOption) (iface.PubSubSubscription, error) {
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options, err := caopts.PubSubSubscribeOptions(opts...)
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if err != nil {
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return nil, err
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}
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resp, err := api.core().request("pubsub/sub", topic).
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Option("discover", options.Discover).
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Send(ctx)
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if err != nil {
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return nil, err
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}
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if resp.Error != nil {
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return nil, resp.Error
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}
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return &pubsubSub{
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Closer: resp,
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dec: json.NewDecoder(resp.Output),
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}, nil
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}
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func (api *PubsubAPI) core() *HttpApi {
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return (*HttpApi)(api)
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}
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