forked from cerc-io/laconicd-deprecated
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package jsonrpc
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"net"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
|
|
"github.com/cosmos/ethermint/server/config"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
)
|
|
|
|
type Service struct {
|
|
rpcServer *rpc.Server
|
|
apis []rpc.API
|
|
http *http.Server
|
|
}
|
|
|
|
// NewService creates a new JSON-RPC server instance over http with public Ethereum APIs
|
|
func NewService(apis []rpc.API) *Service {
|
|
s := &Service{
|
|
rpcServer: rpc.NewServer(),
|
|
apis: apis,
|
|
http: &http.Server{},
|
|
}
|
|
s.http.Handler = s.rpcServer
|
|
|
|
return s
|
|
}
|
|
|
|
// Name returns the JSON-RPC service name
|
|
func (Service) Name() string {
|
|
return "JSON-RPC"
|
|
}
|
|
|
|
// RegisterRoutes registers the JSON-RPC server to the application. It fails if any of the
|
|
// API names fail to register.
|
|
func (s *Service) RegisterRoutes() error {
|
|
for _, api := range s.apis {
|
|
if err := s.rpcServer.RegisterName(api.Namespace, api.Service); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// Start starts the JSON-RPC server on the address defined on the configuration.
|
|
func (s *Service) Start(cfg config.Config) error {
|
|
u, err := url.Parse(cfg.JSONRPC.Address)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
listener, err := net.Listen("tcp", u.Host)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
errCh := make(chan error)
|
|
go func() {
|
|
err = s.http.Serve(listener)
|
|
if err != nil {
|
|
errCh <- fmt.Errorf("failed to serve: %w", err)
|
|
}
|
|
}()
|
|
|
|
select {
|
|
case err := <-errCh:
|
|
return err
|
|
case <-time.After(5 * time.Second): // assume server started successfully
|
|
return nil
|
|
}
|
|
}
|
|
|
|
// Stop stops the JSON-RPC service by no longer reading new requests, waits for
|
|
// stopPendingRequestTimeout to allow pending requests to finish, then closes all codecs which will
|
|
// cancel pending requests and subscriptions.
|
|
func (s *Service) Stop() error {
|
|
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
|
|
defer cancel()
|
|
|
|
err := s.http.Shutdown(ctx)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|