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182 lines
6.1 KiB
182 lines
6.1 KiB
package proxy
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import (
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"context"
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"net/http"
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amino "github.com/tendermint/go-amino"
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cmn "github.com/tendermint/tendermint/libs/common"
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"github.com/tendermint/tendermint/libs/log"
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"github.com/tendermint/tendermint/rpc/client"
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rpcclient "github.com/tendermint/tendermint/rpc/client"
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"github.com/tendermint/tendermint/rpc/core"
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ctypes "github.com/tendermint/tendermint/rpc/core/types"
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rpcserver "github.com/tendermint/tendermint/rpc/lib/server"
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rpctypes "github.com/tendermint/tendermint/rpc/lib/types"
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"github.com/tendermint/tendermint/types"
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)
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const (
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wsEndpoint = "/websocket"
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)
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// StartProxy will start the websocket manager on the client,
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// set up the rpc routes to proxy via the given client,
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// and start up an http/rpc server on the location given by bind (eg. :1234)
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// NOTE: This function blocks - you may want to call it in a go-routine.
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func StartProxy(c rpcclient.Client, listenAddr string, logger log.Logger, maxOpenConnections int) error {
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err := c.Start()
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if err != nil {
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return err
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}
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cdc := amino.NewCodec()
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ctypes.RegisterAmino(cdc)
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r := RPCRoutes(c)
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// build the handler...
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mux := http.NewServeMux()
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rpcserver.RegisterRPCFuncs(mux, r, cdc, logger)
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unsubscribeFromAllEvents := func(remoteAddr string) {
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if err := c.UnsubscribeAll(context.Background(), remoteAddr); err != nil {
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logger.Error("Failed to unsubscribe from events", "err", err)
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}
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}
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wm := rpcserver.NewWebsocketManager(r, cdc, rpcserver.OnDisconnect(unsubscribeFromAllEvents))
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wm.SetLogger(logger)
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core.SetLogger(logger)
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mux.HandleFunc(wsEndpoint, wm.WebsocketHandler)
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config := rpcserver.DefaultConfig()
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config.MaxOpenConnections = maxOpenConnections
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l, err := rpcserver.Listen(listenAddr, config)
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if err != nil {
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return err
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}
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return rpcserver.StartHTTPServer(l, mux, logger, config)
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}
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// RPCRoutes just routes everything to the given client, as if it were
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// a tendermint fullnode.
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//
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// if we want security, the client must implement it as a secure client
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func RPCRoutes(c rpcclient.Client) map[string]*rpcserver.RPCFunc {
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return map[string]*rpcserver.RPCFunc{
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// Subscribe/unsubscribe are reserved for websocket events.
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"subscribe": rpcserver.NewWSRPCFunc(c.(Wrapper).SubscribeWS, "query"),
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"unsubscribe": rpcserver.NewWSRPCFunc(c.(Wrapper).UnsubscribeWS, "query"),
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"unsubscribe_all": rpcserver.NewWSRPCFunc(c.(Wrapper).UnsubscribeAllWS, ""),
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// info API
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"status": rpcserver.NewRPCFunc(makeStatusFunc(c), ""),
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"blockchain": rpcserver.NewRPCFunc(makeBlockchainInfoFunc(c), "minHeight,maxHeight"),
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"genesis": rpcserver.NewRPCFunc(makeGenesisFunc(c), ""),
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"block": rpcserver.NewRPCFunc(makeBlockFunc(c), "height"),
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"commit": rpcserver.NewRPCFunc(makeCommitFunc(c), "height"),
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"tx": rpcserver.NewRPCFunc(makeTxFunc(c), "hash,prove"),
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"validators": rpcserver.NewRPCFunc(makeValidatorsFunc(c), "height"),
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// broadcast API
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"broadcast_tx_commit": rpcserver.NewRPCFunc(makeBroadcastTxCommitFunc(c), "tx"),
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"broadcast_tx_sync": rpcserver.NewRPCFunc(makeBroadcastTxSyncFunc(c), "tx"),
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"broadcast_tx_async": rpcserver.NewRPCFunc(makeBroadcastTxAsyncFunc(c), "tx"),
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// abci API
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"abci_query": rpcserver.NewRPCFunc(makeABCIQueryFunc(c), "path,data"),
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"abci_info": rpcserver.NewRPCFunc(makeABCIInfoFunc(c), ""),
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}
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}
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func makeStatusFunc(c client.StatusClient) func(ctx *rpctypes.Context) (*ctypes.ResultStatus, error) {
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return func(ctx *rpctypes.Context) (*ctypes.ResultStatus, error) {
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return c.Status()
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}
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}
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func makeBlockchainInfoFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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minHeight,
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maxHeight int64,
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) (*ctypes.ResultBlockchainInfo, error) {
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return func(ctx *rpctypes.Context, minHeight, maxHeight int64) (*ctypes.ResultBlockchainInfo, error) {
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return c.BlockchainInfo(minHeight, maxHeight)
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}
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}
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func makeGenesisFunc(c rpcclient.Client) func(ctx *rpctypes.Context) (*ctypes.ResultGenesis, error) {
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return func(ctx *rpctypes.Context) (*ctypes.ResultGenesis, error) {
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return c.Genesis()
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}
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}
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func makeBlockFunc(c rpcclient.Client) func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultBlock, error) {
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return func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultBlock, error) {
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return c.Block(height)
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}
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}
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func makeCommitFunc(c rpcclient.Client) func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultCommit, error) {
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return func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultCommit, error) {
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return c.Commit(height)
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}
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}
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func makeTxFunc(c rpcclient.Client) func(ctx *rpctypes.Context, hash []byte, prove bool) (*ctypes.ResultTx, error) {
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return func(ctx *rpctypes.Context, hash []byte, prove bool) (*ctypes.ResultTx, error) {
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return c.Tx(hash, prove)
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}
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}
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func makeValidatorsFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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height *int64,
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) (*ctypes.ResultValidators, error) {
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return func(ctx *rpctypes.Context, height *int64) (*ctypes.ResultValidators, error) {
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return c.Validators(height, 0, 0)
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}
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}
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func makeBroadcastTxCommitFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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tx types.Tx,
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) (*ctypes.ResultBroadcastTxCommit, error) {
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return func(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTxCommit, error) {
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return c.BroadcastTxCommit(tx)
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}
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}
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func makeBroadcastTxSyncFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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tx types.Tx,
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) (*ctypes.ResultBroadcastTx, error) {
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return func(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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return c.BroadcastTxSync(tx)
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}
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}
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func makeBroadcastTxAsyncFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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tx types.Tx,
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) (*ctypes.ResultBroadcastTx, error) {
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return func(ctx *rpctypes.Context, tx types.Tx) (*ctypes.ResultBroadcastTx, error) {
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return c.BroadcastTxAsync(tx)
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}
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}
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func makeABCIQueryFunc(c rpcclient.Client) func(
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ctx *rpctypes.Context,
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path string,
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data cmn.HexBytes,
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) (*ctypes.ResultABCIQuery, error) {
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return func(ctx *rpctypes.Context, path string, data cmn.HexBytes) (*ctypes.ResultABCIQuery, error) {
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return c.ABCIQuery(path, data)
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}
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}
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func makeABCIInfoFunc(c rpcclient.Client) func(ctx *rpctypes.Context) (*ctypes.ResultABCIInfo, error) {
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return func(ctx *rpctypes.Context) (*ctypes.ResultABCIInfo, error) {
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return c.ABCIInfo()
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}
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}
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