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package proxy
import (
"net/http"
amino "github.com/tendermint/go-amino"
"github.com/tendermint/tmlibs/log"
rpcclient "github.com/tendermint/tendermint/rpc/client"
"github.com/tendermint/tendermint/rpc/core"
ctypes "github.com/tendermint/tendermint/rpc/core/types"
rpc "github.com/tendermint/tendermint/rpc/lib/server"
)
const (
wsEndpoint = "/websocket"
)
// StartProxy will start the websocket manager on the client,
// set up the rpc routes to proxy via the given client,
// and start up an http/rpc server on the location given by bind (eg. :1234)
func StartProxy(c rpcclient.Client, listenAddr string, logger log.Logger) error {
err := c.Start()
if err != nil {
return err
}
cdc := amino.NewCodec()
ctypes.RegisterAmino(cdc)
r := RPCRoutes(c)
// build the handler...
mux := http.NewServeMux()
rpc.RegisterRPCFuncs(mux, r, cdc, logger)
wm := rpc.NewWebsocketManager(r, cdc, rpc.EventSubscriber(c))
wm.SetLogger(logger)
core.SetLogger(logger)
mux.HandleFunc(wsEndpoint, wm.WebsocketHandler)
// TODO: limit max number of open connections rpc.Config{MaxOpenConnections: X}
_, err = rpc.StartHTTPServer(listenAddr, mux, logger, rpc.Config{})
return err
}
// RPCRoutes just routes everything to the given client, as if it were
// a tendermint fullnode.
//
// if we want security, the client must implement it as a secure client
func RPCRoutes(c rpcclient.Client) map[string]*rpc.RPCFunc {
return map[string]*rpc.RPCFunc{
// Subscribe/unsubscribe are reserved for websocket events.
// We can just use the core tendermint impl, which uses the
// EventSwitch we registered in NewWebsocketManager above
"subscribe": rpc.NewWSRPCFunc(core.Subscribe, "query"),
"unsubscribe": rpc.NewWSRPCFunc(core.Unsubscribe, "query"),
// info API
"status": rpc.NewRPCFunc(c.Status, ""),
"blockchain": rpc.NewRPCFunc(c.BlockchainInfo, "minHeight,maxHeight"),
"genesis": rpc.NewRPCFunc(c.Genesis, ""),
"block": rpc.NewRPCFunc(c.Block, "height"),
"commit": rpc.NewRPCFunc(c.Commit, "height"),
"tx": rpc.NewRPCFunc(c.Tx, "hash,prove"),
"validators": rpc.NewRPCFunc(c.Validators, ""),
// broadcast API
"broadcast_tx_commit": rpc.NewRPCFunc(c.BroadcastTxCommit, "tx"),
"broadcast_tx_sync": rpc.NewRPCFunc(c.BroadcastTxSync, "tx"),
"broadcast_tx_async": rpc.NewRPCFunc(c.BroadcastTxAsync, "tx"),
// abci API
"abci_query": rpc.NewRPCFunc(c.ABCIQuery, "path,data,prove"),
"abci_info": rpc.NewRPCFunc(c.ABCIInfo, ""),
}
}