op-geth/cmd/swarm/global-store/global_store.go

121 lines
3.3 KiB
Go

// Copyright 2019 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"io"
"net"
"net/http"
"os"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/swarm/storage/mock"
"github.com/ethereum/go-ethereum/swarm/storage/mock/db"
"github.com/ethereum/go-ethereum/swarm/storage/mock/mem"
cli "gopkg.in/urfave/cli.v1"
)
// startHTTP starts a global store with HTTP RPC server.
// It is used for "http" cli command.
func startHTTP(ctx *cli.Context) (err error) {
server, cleanup, err := newServer(ctx)
if err != nil {
return err
}
defer cleanup()
listener, err := net.Listen("tcp", ctx.String("addr"))
if err != nil {
return err
}
log.Info("http", "address", listener.Addr().String())
return http.Serve(listener, server)
}
// startWS starts a global store with WebSocket RPC server.
// It is used for "websocket" cli command.
func startWS(ctx *cli.Context) (err error) {
server, cleanup, err := newServer(ctx)
if err != nil {
return err
}
defer cleanup()
listener, err := net.Listen("tcp", ctx.String("addr"))
if err != nil {
return err
}
origins := ctx.StringSlice("origins")
log.Info("websocket", "address", listener.Addr().String(), "origins", origins)
return http.Serve(listener, server.WebsocketHandler(origins))
}
// newServer creates a global store and starts a chunk explorer server if configured.
// Returned cleanup function should be called only if err is nil.
func newServer(ctx *cli.Context) (server *rpc.Server, cleanup func(), err error) {
log.PrintOrigins(true)
log.Root().SetHandler(log.LvlFilterHandler(log.Lvl(ctx.Int("verbosity")), log.StreamHandler(os.Stdout, log.TerminalFormat(false))))
cleanup = func() {}
var globalStore mock.GlobalStorer
dir := ctx.String("dir")
if dir != "" {
dbStore, err := db.NewGlobalStore(dir)
if err != nil {
return nil, nil, err
}
cleanup = func() {
if err := dbStore.Close(); err != nil {
log.Error("global store: close", "err", err)
}
}
globalStore = dbStore
log.Info("database global store", "dir", dir)
} else {
globalStore = mem.NewGlobalStore()
log.Info("in-memory global store")
}
server = rpc.NewServer()
if err := server.RegisterName("mockStore", globalStore); err != nil {
cleanup()
return nil, nil, err
}
shutdown, err := serveChunkExplorer(ctx, globalStore)
if err != nil {
cleanup()
return nil, nil, err
}
if shutdown != nil {
cleanup = func() {
shutdown()
if c, ok := globalStore.(io.Closer); ok {
if err := c.Close(); err != nil {
log.Error("global store: close", "err", err)
}
}
}
}
return server, cleanup, nil
}