You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
664 lines
18 KiB
664 lines
18 KiB
package http
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"net/http"
|
|
"strings"
|
|
"sync"
|
|
"time"
|
|
|
|
"github.com/tendermint/tendermint/libs/bytes"
|
|
tmjson "github.com/tendermint/tendermint/libs/json"
|
|
"github.com/tendermint/tendermint/libs/log"
|
|
tmpubsub "github.com/tendermint/tendermint/libs/pubsub"
|
|
"github.com/tendermint/tendermint/libs/service"
|
|
rpcclient "github.com/tendermint/tendermint/rpc/client"
|
|
ctypes "github.com/tendermint/tendermint/rpc/core/types"
|
|
jsonrpcclient "github.com/tendermint/tendermint/rpc/jsonrpc/client"
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
/*
|
|
HTTP is a Client implementation that communicates with a Tendermint node over
|
|
JSON RPC and WebSockets.
|
|
|
|
This is the main implementation you probably want to use in production code.
|
|
There are other implementations when calling the Tendermint node in-process
|
|
(Local), or when you want to mock out the server for test code (mock).
|
|
|
|
You can subscribe for any event published by Tendermint using Subscribe method.
|
|
Note delivery is best-effort. If you don't read events fast enough or network is
|
|
slow, Tendermint might cancel the subscription. The client will attempt to
|
|
resubscribe (you don't need to do anything). It will keep trying every second
|
|
indefinitely until successful.
|
|
|
|
Request batching is available for JSON RPC requests over HTTP, which conforms to
|
|
the JSON RPC specification (https://www.jsonrpc.org/specification#batch). See
|
|
the example for more details.
|
|
|
|
Example:
|
|
|
|
c, err := New("http://192.168.1.10:26657", "/websocket")
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
// call Start/Stop if you're subscribing to events
|
|
err = c.Start()
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
defer c.Stop()
|
|
|
|
res, err := c.Status()
|
|
if err != nil {
|
|
// handle error
|
|
}
|
|
|
|
// handle result
|
|
*/
|
|
type HTTP struct {
|
|
remote string
|
|
rpc *jsonrpcclient.Client
|
|
|
|
*baseRPCClient
|
|
*WSEvents
|
|
}
|
|
|
|
// BatchHTTP provides the same interface as `HTTP`, but allows for batching of
|
|
// requests (as per https://www.jsonrpc.org/specification#batch). Do not
|
|
// instantiate directly - rather use the HTTP.NewBatch() method to create an
|
|
// instance of this struct.
|
|
//
|
|
// Batching of HTTP requests is thread-safe in the sense that multiple
|
|
// goroutines can each create their own batches and send them using the same
|
|
// HTTP client. Multiple goroutines could also enqueue transactions in a single
|
|
// batch, but ordering of transactions in the batch cannot be guaranteed in such
|
|
// an example.
|
|
type BatchHTTP struct {
|
|
rpcBatch *jsonrpcclient.RequestBatch
|
|
*baseRPCClient
|
|
}
|
|
|
|
// rpcClient is an internal interface to which our RPC clients (batch and
|
|
// non-batch) must conform. Acts as an additional code-level sanity check to
|
|
// make sure the implementations stay coherent.
|
|
type rpcClient interface {
|
|
rpcclient.ABCIClient
|
|
rpcclient.HistoryClient
|
|
rpcclient.NetworkClient
|
|
rpcclient.SignClient
|
|
rpcclient.StatusClient
|
|
}
|
|
|
|
// baseRPCClient implements the basic RPC method logic without the actual
|
|
// underlying RPC call functionality, which is provided by `caller`.
|
|
type baseRPCClient struct {
|
|
caller jsonrpcclient.Caller
|
|
}
|
|
|
|
var _ rpcClient = (*HTTP)(nil)
|
|
var _ rpcClient = (*BatchHTTP)(nil)
|
|
var _ rpcClient = (*baseRPCClient)(nil)
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// HTTP
|
|
|
|
// New takes a remote endpoint in the form <protocol>://<host>:<port> and
|
|
// the websocket path (which always seems to be "/websocket")
|
|
// An error is returned on invalid remote. The function panics when remote is nil.
|
|
func New(remote, wsEndpoint string) (*HTTP, error) {
|
|
httpClient, err := jsonrpcclient.DefaultHTTPClient(remote)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return NewWithClient(remote, wsEndpoint, httpClient)
|
|
}
|
|
|
|
// Create timeout enabled http client
|
|
func NewWithTimeout(remote, wsEndpoint string, timeout uint) (*HTTP, error) {
|
|
httpClient, err := jsonrpcclient.DefaultHTTPClient(remote)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
httpClient.Timeout = time.Duration(timeout) * time.Second
|
|
return NewWithClient(remote, wsEndpoint, httpClient)
|
|
}
|
|
|
|
// NewWithClient allows for setting a custom http client (See New).
|
|
// An error is returned on invalid remote. The function panics when remote is nil.
|
|
func NewWithClient(remote, wsEndpoint string, client *http.Client) (*HTTP, error) {
|
|
if client == nil {
|
|
panic("nil http.Client provided")
|
|
}
|
|
|
|
rc, err := jsonrpcclient.NewWithHTTPClient(remote, client)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
wsEvents, err := newWSEvents(remote, wsEndpoint)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
httpClient := &HTTP{
|
|
rpc: rc,
|
|
remote: remote,
|
|
baseRPCClient: &baseRPCClient{caller: rc},
|
|
WSEvents: wsEvents,
|
|
}
|
|
|
|
return httpClient, nil
|
|
}
|
|
|
|
var _ rpcclient.Client = (*HTTP)(nil)
|
|
|
|
// SetLogger sets a logger.
|
|
func (c *HTTP) SetLogger(l log.Logger) {
|
|
c.WSEvents.SetLogger(l)
|
|
}
|
|
|
|
// Remote returns the remote network address in a string form.
|
|
func (c *HTTP) Remote() string {
|
|
return c.remote
|
|
}
|
|
|
|
// NewBatch creates a new batch client for this HTTP client.
|
|
func (c *HTTP) NewBatch() *BatchHTTP {
|
|
rpcBatch := c.rpc.NewRequestBatch()
|
|
return &BatchHTTP{
|
|
rpcBatch: rpcBatch,
|
|
baseRPCClient: &baseRPCClient{
|
|
caller: rpcBatch,
|
|
},
|
|
}
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// BatchHTTP
|
|
|
|
// Send is a convenience function for an HTTP batch that will trigger the
|
|
// compilation of the batched requests and send them off using the client as a
|
|
// single request. On success, this returns a list of the deserialized results
|
|
// from each request in the sent batch.
|
|
func (b *BatchHTTP) Send() ([]interface{}, error) {
|
|
return b.rpcBatch.Send()
|
|
}
|
|
|
|
// Clear will empty out this batch of requests and return the number of requests
|
|
// that were cleared out.
|
|
func (b *BatchHTTP) Clear() int {
|
|
return b.rpcBatch.Clear()
|
|
}
|
|
|
|
// Count returns the number of enqueued requests waiting to be sent.
|
|
func (b *BatchHTTP) Count() int {
|
|
return b.rpcBatch.Count()
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// baseRPCClient
|
|
|
|
func (c *baseRPCClient) Status() (*ctypes.ResultStatus, error) {
|
|
result := new(ctypes.ResultStatus)
|
|
_, err := c.caller.Call("status", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) ABCIInfo() (*ctypes.ResultABCIInfo, error) {
|
|
result := new(ctypes.ResultABCIInfo)
|
|
_, err := c.caller.Call("abci_info", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) ABCIQuery(path string, data bytes.HexBytes) (*ctypes.ResultABCIQuery, error) {
|
|
return c.ABCIQueryWithOptions(path, data, rpcclient.DefaultABCIQueryOptions)
|
|
}
|
|
|
|
func (c *baseRPCClient) ABCIQueryWithOptions(
|
|
path string,
|
|
data bytes.HexBytes,
|
|
opts rpcclient.ABCIQueryOptions) (*ctypes.ResultABCIQuery, error) {
|
|
result := new(ctypes.ResultABCIQuery)
|
|
_, err := c.caller.Call("abci_query",
|
|
map[string]interface{}{"path": path, "data": data, "height": opts.Height, "prove": opts.Prove},
|
|
result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BroadcastTxCommit(tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
|
|
result := new(ctypes.ResultBroadcastTxCommit)
|
|
_, err := c.caller.Call("broadcast_tx_commit", map[string]interface{}{"tx": tx}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BroadcastTxAsync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
|
|
return c.broadcastTX("broadcast_tx_async", tx)
|
|
}
|
|
|
|
func (c *baseRPCClient) BroadcastTxSync(tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
|
|
return c.broadcastTX("broadcast_tx_sync", tx)
|
|
}
|
|
|
|
func (c *baseRPCClient) broadcastTX(route string, tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
|
|
result := new(ctypes.ResultBroadcastTx)
|
|
_, err := c.caller.Call(route, map[string]interface{}{"tx": tx}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) UnconfirmedTxs(limit *int) (*ctypes.ResultUnconfirmedTxs, error) {
|
|
result := new(ctypes.ResultUnconfirmedTxs)
|
|
params := make(map[string]interface{})
|
|
if limit != nil {
|
|
params["limit"] = limit
|
|
}
|
|
_, err := c.caller.Call("unconfirmed_txs", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) NumUnconfirmedTxs() (*ctypes.ResultUnconfirmedTxs, error) {
|
|
result := new(ctypes.ResultUnconfirmedTxs)
|
|
_, err := c.caller.Call("num_unconfirmed_txs", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) NetInfo() (*ctypes.ResultNetInfo, error) {
|
|
result := new(ctypes.ResultNetInfo)
|
|
_, err := c.caller.Call("net_info", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) DumpConsensusState() (*ctypes.ResultDumpConsensusState, error) {
|
|
result := new(ctypes.ResultDumpConsensusState)
|
|
_, err := c.caller.Call("dump_consensus_state", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) ConsensusState() (*ctypes.ResultConsensusState, error) {
|
|
result := new(ctypes.ResultConsensusState)
|
|
_, err := c.caller.Call("consensus_state", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) ConsensusParams(height *int64) (*ctypes.ResultConsensusParams, error) {
|
|
result := new(ctypes.ResultConsensusParams)
|
|
params := make(map[string]interface{})
|
|
if height != nil {
|
|
params["height"] = height
|
|
}
|
|
_, err := c.caller.Call("consensus_params", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Health() (*ctypes.ResultHealth, error) {
|
|
result := new(ctypes.ResultHealth)
|
|
_, err := c.caller.Call("health", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BlockchainInfo(minHeight, maxHeight int64) (*ctypes.ResultBlockchainInfo, error) {
|
|
result := new(ctypes.ResultBlockchainInfo)
|
|
_, err := c.caller.Call("blockchain",
|
|
map[string]interface{}{"minHeight": minHeight, "maxHeight": maxHeight},
|
|
result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Genesis() (*ctypes.ResultGenesis, error) {
|
|
result := new(ctypes.ResultGenesis)
|
|
_, err := c.caller.Call("genesis", map[string]interface{}{}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Block(height *int64) (*ctypes.ResultBlock, error) {
|
|
result := new(ctypes.ResultBlock)
|
|
params := make(map[string]interface{})
|
|
if height != nil {
|
|
params["height"] = height
|
|
}
|
|
_, err := c.caller.Call("block", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BlockByHash(hash []byte) (*ctypes.ResultBlock, error) {
|
|
result := new(ctypes.ResultBlock)
|
|
params := map[string]interface{}{
|
|
"hash": hash,
|
|
}
|
|
_, err := c.caller.Call("block_by_hash", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BlockResults(height *int64) (*ctypes.ResultBlockResults, error) {
|
|
result := new(ctypes.ResultBlockResults)
|
|
params := make(map[string]interface{})
|
|
if height != nil {
|
|
params["height"] = height
|
|
}
|
|
_, err := c.caller.Call("block_results", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Commit(height *int64) (*ctypes.ResultCommit, error) {
|
|
result := new(ctypes.ResultCommit)
|
|
params := make(map[string]interface{})
|
|
if height != nil {
|
|
params["height"] = height
|
|
}
|
|
_, err := c.caller.Call("commit", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Tx(hash []byte, prove bool) (*ctypes.ResultTx, error) {
|
|
result := new(ctypes.ResultTx)
|
|
params := map[string]interface{}{
|
|
"hash": hash,
|
|
"prove": prove,
|
|
}
|
|
_, err := c.caller.Call("tx", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) TxSearch(query string, prove bool, page, perPage *int, orderBy string) (
|
|
*ctypes.ResultTxSearch, error) {
|
|
result := new(ctypes.ResultTxSearch)
|
|
params := map[string]interface{}{
|
|
"query": query,
|
|
"prove": prove,
|
|
"order_by": orderBy,
|
|
}
|
|
if page != nil {
|
|
params["page"] = page
|
|
}
|
|
if perPage != nil {
|
|
params["per_page"] = perPage
|
|
}
|
|
_, err := c.caller.Call("tx_search", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) Validators(height *int64, page, perPage *int) (*ctypes.ResultValidators, error) {
|
|
result := new(ctypes.ResultValidators)
|
|
params := make(map[string]interface{})
|
|
if page != nil {
|
|
params["page"] = page
|
|
}
|
|
if perPage != nil {
|
|
params["per_page"] = perPage
|
|
}
|
|
if height != nil {
|
|
params["height"] = height
|
|
}
|
|
_, err := c.caller.Call("validators", params, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
func (c *baseRPCClient) BroadcastEvidence(ev types.Evidence) (*ctypes.ResultBroadcastEvidence, error) {
|
|
result := new(ctypes.ResultBroadcastEvidence)
|
|
_, err := c.caller.Call("broadcast_evidence", map[string]interface{}{"evidence": ev}, result)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return result, nil
|
|
}
|
|
|
|
//-----------------------------------------------------------------------------
|
|
// WSEvents
|
|
|
|
var errNotRunning = errors.New("client is not running. Use .Start() method to start")
|
|
|
|
// WSEvents is a wrapper around WSClient, which implements EventsClient.
|
|
type WSEvents struct {
|
|
service.BaseService
|
|
remote string
|
|
endpoint string
|
|
ws *jsonrpcclient.WSClient
|
|
|
|
mtx sync.RWMutex
|
|
subscriptions map[string]chan ctypes.ResultEvent // query -> chan
|
|
}
|
|
|
|
func newWSEvents(remote, endpoint string) (*WSEvents, error) {
|
|
w := &WSEvents{
|
|
endpoint: endpoint,
|
|
remote: remote,
|
|
subscriptions: make(map[string]chan ctypes.ResultEvent),
|
|
}
|
|
w.BaseService = *service.NewBaseService(nil, "WSEvents", w)
|
|
|
|
var err error
|
|
w.ws, err = jsonrpcclient.NewWS(w.remote, w.endpoint, jsonrpcclient.OnReconnect(func() {
|
|
// resubscribe immediately
|
|
w.redoSubscriptionsAfter(0 * time.Second)
|
|
}))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
w.ws.SetLogger(w.Logger)
|
|
|
|
return w, nil
|
|
}
|
|
|
|
// OnStart implements service.Service by starting WSClient and event loop.
|
|
func (w *WSEvents) OnStart() error {
|
|
if err := w.ws.Start(); err != nil {
|
|
return err
|
|
}
|
|
|
|
go w.eventListener()
|
|
|
|
return nil
|
|
}
|
|
|
|
// OnStop implements service.Service by stopping WSClient.
|
|
func (w *WSEvents) OnStop() {
|
|
_ = w.ws.Stop()
|
|
}
|
|
|
|
// Subscribe implements EventsClient by using WSClient to subscribe given
|
|
// subscriber to query. By default, returns a channel with cap=1. Error is
|
|
// returned if it fails to subscribe.
|
|
//
|
|
// Channel is never closed to prevent clients from seeing an erroneous event.
|
|
//
|
|
// It returns an error if WSEvents is not running.
|
|
func (w *WSEvents) Subscribe(ctx context.Context, subscriber, query string,
|
|
outCapacity ...int) (out <-chan ctypes.ResultEvent, err error) {
|
|
|
|
if !w.IsRunning() {
|
|
return nil, errNotRunning
|
|
}
|
|
|
|
if err := w.ws.Subscribe(ctx, query); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
outCap := 1
|
|
if len(outCapacity) > 0 {
|
|
outCap = outCapacity[0]
|
|
}
|
|
|
|
outc := make(chan ctypes.ResultEvent, outCap)
|
|
w.mtx.Lock()
|
|
// subscriber param is ignored because Tendermint will override it with
|
|
// remote IP anyway.
|
|
w.subscriptions[query] = outc
|
|
w.mtx.Unlock()
|
|
|
|
return outc, nil
|
|
}
|
|
|
|
// Unsubscribe implements EventsClient by using WSClient to unsubscribe given
|
|
// subscriber from query.
|
|
//
|
|
// It returns an error if WSEvents is not running.
|
|
func (w *WSEvents) Unsubscribe(ctx context.Context, subscriber, query string) error {
|
|
if !w.IsRunning() {
|
|
return errNotRunning
|
|
}
|
|
|
|
if err := w.ws.Unsubscribe(ctx, query); err != nil {
|
|
return err
|
|
}
|
|
|
|
w.mtx.Lock()
|
|
_, ok := w.subscriptions[query]
|
|
if ok {
|
|
delete(w.subscriptions, query)
|
|
}
|
|
w.mtx.Unlock()
|
|
|
|
return nil
|
|
}
|
|
|
|
// UnsubscribeAll implements EventsClient by using WSClient to unsubscribe
|
|
// given subscriber from all the queries.
|
|
//
|
|
// It returns an error if WSEvents is not running.
|
|
func (w *WSEvents) UnsubscribeAll(ctx context.Context, subscriber string) error {
|
|
if !w.IsRunning() {
|
|
return errNotRunning
|
|
}
|
|
|
|
if err := w.ws.UnsubscribeAll(ctx); err != nil {
|
|
return err
|
|
}
|
|
|
|
w.mtx.Lock()
|
|
w.subscriptions = make(map[string]chan ctypes.ResultEvent)
|
|
w.mtx.Unlock()
|
|
|
|
return nil
|
|
}
|
|
|
|
// After being reconnected, it is necessary to redo subscription to server
|
|
// otherwise no data will be automatically received.
|
|
func (w *WSEvents) redoSubscriptionsAfter(d time.Duration) {
|
|
time.Sleep(d)
|
|
|
|
w.mtx.RLock()
|
|
defer w.mtx.RUnlock()
|
|
for q := range w.subscriptions {
|
|
err := w.ws.Subscribe(context.Background(), q)
|
|
if err != nil {
|
|
w.Logger.Error("Failed to resubscribe", "err", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func isErrAlreadySubscribed(err error) bool {
|
|
return strings.Contains(err.Error(), tmpubsub.ErrAlreadySubscribed.Error())
|
|
}
|
|
|
|
func (w *WSEvents) eventListener() {
|
|
for {
|
|
select {
|
|
case resp, ok := <-w.ws.ResponsesCh:
|
|
if !ok {
|
|
return
|
|
}
|
|
|
|
if resp.Error != nil {
|
|
w.Logger.Error("WS error", "err", resp.Error.Error())
|
|
// Error can be ErrAlreadySubscribed or max client (subscriptions per
|
|
// client) reached or Tendermint exited.
|
|
// We can ignore ErrAlreadySubscribed, but need to retry in other
|
|
// cases.
|
|
if !isErrAlreadySubscribed(resp.Error) {
|
|
// Resubscribe after 1 second to give Tendermint time to restart (if
|
|
// crashed).
|
|
w.redoSubscriptionsAfter(1 * time.Second)
|
|
}
|
|
continue
|
|
}
|
|
|
|
result := new(ctypes.ResultEvent)
|
|
err := tmjson.Unmarshal(resp.Result, result)
|
|
if err != nil {
|
|
w.Logger.Error("failed to unmarshal response", "err", err)
|
|
continue
|
|
}
|
|
|
|
w.mtx.RLock()
|
|
if out, ok := w.subscriptions[result.Query]; ok {
|
|
if cap(out) == 0 {
|
|
out <- *result
|
|
} else {
|
|
select {
|
|
case out <- *result:
|
|
default:
|
|
w.Logger.Error("wanted to publish ResultEvent, but out channel is full", "result", result, "query", result.Query)
|
|
}
|
|
}
|
|
}
|
|
w.mtx.RUnlock()
|
|
case <-w.Quit():
|
|
return
|
|
}
|
|
}
|
|
}
|