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132 lines
4.7 KiB
132 lines
4.7 KiB
package rpc
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import (
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"context"
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"net/http"
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"time"
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"github.com/rs/cors"
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"github.com/tendermint/tendermint/config"
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"github.com/tendermint/tendermint/internal/pubsub"
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"github.com/tendermint/tendermint/internal/rpc/core"
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"github.com/tendermint/tendermint/internal/state"
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"github.com/tendermint/tendermint/internal/state/indexer"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/rpc/jsonrpc/server"
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)
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// Server defines parameters for running an Inspector rpc server.
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type Server struct {
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Addr string // TCP address to listen on, ":http" if empty
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Handler http.Handler
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Logger log.Logger
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Config *config.RPCConfig
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}
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type eventBusUnsubscriber interface {
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UnsubscribeAll(ctx context.Context, subscriber string) error
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}
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// Routes returns the set of routes used by the Inspector server.
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func Routes(cfg config.RPCConfig, s state.Store, bs state.BlockStore, es []indexer.EventSink, logger log.Logger) core.RoutesMap {
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env := &core.Environment{
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Config: cfg,
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EventSinks: es,
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StateStore: s,
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BlockStore: bs,
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Logger: logger,
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}
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return core.RoutesMap{
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"blockchain": server.NewRPCFunc(env.BlockchainInfo, "minHeight,maxHeight"),
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"consensus_params": server.NewRPCFunc(env.ConsensusParams, "height"),
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"block": server.NewRPCFunc(env.Block, "height"),
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"block_by_hash": server.NewRPCFunc(env.BlockByHash, "hash"),
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"block_results": server.NewRPCFunc(env.BlockResults, "height"),
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"commit": server.NewRPCFunc(env.Commit, "height"),
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"validators": server.NewRPCFunc(env.Validators, "height,page,per_page"),
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"tx": server.NewRPCFunc(env.Tx, "hash,prove"),
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"tx_search": server.NewRPCFunc(env.TxSearch, "query,prove,page,per_page,order_by"),
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"block_search": server.NewRPCFunc(env.BlockSearch, "query,page,per_page,order_by"),
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}
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}
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// Handler returns the http.Handler configured for use with an Inspector server. Handler
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// registers the routes on the http.Handler and also registers the websocket handler
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// and the CORS handler if specified by the configuration options.
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func Handler(rpcConfig *config.RPCConfig, routes core.RoutesMap, logger log.Logger) http.Handler {
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mux := http.NewServeMux()
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wmLogger := logger.With("protocol", "websocket")
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var eventBus eventBusUnsubscriber
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websocketDisconnectFn := func(remoteAddr string) {
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err := eventBus.UnsubscribeAll(context.Background(), remoteAddr)
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if err != nil && err != pubsub.ErrSubscriptionNotFound {
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wmLogger.Error("Failed to unsubscribe addr from events", "addr", remoteAddr, "err", err)
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}
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}
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wm := server.NewWebsocketManager(logger, routes,
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server.OnDisconnect(websocketDisconnectFn),
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server.ReadLimit(rpcConfig.MaxBodyBytes))
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mux.HandleFunc("/websocket", wm.WebsocketHandler)
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server.RegisterRPCFuncs(mux, routes, logger)
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var rootHandler http.Handler = mux
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if rpcConfig.IsCorsEnabled() {
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rootHandler = addCORSHandler(rpcConfig, mux)
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}
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return rootHandler
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}
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func addCORSHandler(rpcConfig *config.RPCConfig, h http.Handler) http.Handler {
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corsMiddleware := cors.New(cors.Options{
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AllowedOrigins: rpcConfig.CORSAllowedOrigins,
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AllowedMethods: rpcConfig.CORSAllowedMethods,
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AllowedHeaders: rpcConfig.CORSAllowedHeaders,
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})
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h = corsMiddleware.Handler(h)
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return h
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}
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// ListenAndServe listens on the address specified in srv.Addr and handles any
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// incoming requests over HTTP using the Inspector rpc handler specified on the server.
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func (srv *Server) ListenAndServe(ctx context.Context) error {
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listener, err := server.Listen(srv.Addr, srv.Config.MaxOpenConnections)
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if err != nil {
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return err
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}
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go func() {
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<-ctx.Done()
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listener.Close()
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}()
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return server.Serve(ctx, listener, srv.Handler, srv.Logger, serverRPCConfig(srv.Config))
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}
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// ListenAndServeTLS listens on the address specified in srv.Addr. ListenAndServeTLS handles
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// incoming requests over HTTPS using the Inspector rpc handler specified on the server.
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func (srv *Server) ListenAndServeTLS(ctx context.Context, certFile, keyFile string) error {
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listener, err := server.Listen(srv.Addr, srv.Config.MaxOpenConnections)
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if err != nil {
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return err
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}
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go func() {
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<-ctx.Done()
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listener.Close()
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}()
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return server.ServeTLS(ctx, listener, srv.Handler, certFile, keyFile, srv.Logger, serverRPCConfig(srv.Config))
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}
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func serverRPCConfig(r *config.RPCConfig) *server.Config {
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cfg := server.DefaultConfig()
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cfg.MaxBodyBytes = r.MaxBodyBytes
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cfg.MaxHeaderBytes = r.MaxHeaderBytes
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// If necessary adjust global WriteTimeout to ensure it's greater than
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// TimeoutBroadcastTxCommit.
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// See https://github.com/tendermint/tendermint/issues/3435
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if cfg.WriteTimeout <= r.TimeoutBroadcastTxCommit {
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cfg.WriteTimeout = r.TimeoutBroadcastTxCommit + 1*time.Second
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}
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return cfg
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}
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