forked from dymensionxyz/dymint
/
server.go
122 lines (104 loc) · 3.2 KB
/
server.go
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package rpc
import (
"context"
"errors"
"net"
"net/http"
"strings"
"time"
"github.com/rs/cors"
"github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/log"
"github.com/tendermint/tendermint/libs/service"
rpcclient "github.com/tendermint/tendermint/rpc/client"
"golang.org/x/net/netutil"
"github.com/furyaxyz/furyint/node"
"github.com/furyaxyz/furyint/rpc/client"
"github.com/furyaxyz/furyint/rpc/json"
)
// Server handles HTTP and JSON-RPC requests, exposing Tendermint-compatible API.
type Server struct {
*service.BaseService
config *config.RPCConfig
client *client.Client
server http.Server
}
// NewServer creates new instance of Server with given configuration.
func NewServer(node *node.Node, config *config.RPCConfig, logger log.Logger) *Server {
srv := &Server{
config: config,
client: client.NewClient(node),
}
srv.BaseService = service.NewBaseService(logger, "RPC", srv)
return srv
}
// Client returns a Tendermint-compatible rpc Client instance.
//
// This method is called in cosmos-sdk.
func (s *Server) Client() rpcclient.Client {
return s.client
}
// OnStart is called when Server is started (see service.BaseService for details).
func (s *Server) OnStart() error {
return s.startRPC()
}
// OnStop is called when Server is stopped (see service.BaseService for details).
func (s *Server) OnStop() {
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
if err := s.server.Shutdown(ctx); err != nil {
s.Logger.Error("error while shuting down RPC server", "error", err)
}
}
func (s *Server) startRPC() error {
if s.config.ListenAddress == "" {
s.Logger.Info("Listen address not specified - RPC will not be exposed")
return nil
}
parts := strings.SplitN(s.config.ListenAddress, "://", 2)
if len(parts) != 2 {
return errors.New("invalid RPC listen address: expecting tcp://host:port")
}
proto := parts[0]
addr := parts[1]
listener, err := net.Listen(proto, addr)
if err != nil {
return err
}
if s.config.MaxOpenConnections != 0 {
s.Logger.Debug("limiting number of connections", "limit", s.config.MaxOpenConnections)
listener = netutil.LimitListener(listener, s.config.MaxOpenConnections)
}
handler, err := json.GetHTTPHandler(s.client, s.Logger)
if err != nil {
return err
}
if s.config.IsCorsEnabled() {
s.Logger.Debug("CORS enabled",
"origins", s.config.CORSAllowedOrigins,
"methods", s.config.CORSAllowedMethods,
"headers", s.config.CORSAllowedHeaders,
)
c := cors.New(cors.Options{
AllowedOrigins: s.config.CORSAllowedOrigins,
AllowedMethods: s.config.CORSAllowedMethods,
AllowedHeaders: s.config.CORSAllowedHeaders,
})
handler = c.Handler(handler)
}
go func() {
err := s.serve(listener, handler)
if err != http.ErrServerClosed {
s.Logger.Error("error while serving HTTP", "error", err)
}
}()
return nil
}
func (s *Server) serve(listener net.Listener, handler http.Handler) error {
s.Logger.Info("serving HTTP", "listen address", listener.Addr())
s.server = http.Server{Handler: handler} //#nosec
if s.config.TLSCertFile != "" && s.config.TLSKeyFile != "" {
return s.server.ServeTLS(listener, s.config.CertFile(), s.config.KeyFile())
}
return s.server.Serve(listener)
}