ipld-eth-server/pkg/rpc/http.go

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// VulcanizeDB
// Copyright © 2020 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program 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 Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package rpc
import (
"fmt"
"net/http"
"github.com/cerc-io/ipld-eth-server/v5/pkg/log"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/rpc"
"github.com/cerc-io/ipld-eth-server/v5/pkg/prom"
)
// StartHTTPEndpoint starts the HTTP RPC endpoint, configured with cors/vhosts/modules.
func StartHTTPEndpoint(endpoint string, apis []rpc.API, modules []string, cors []string, vhosts []string, timeouts rpc.HTTPTimeouts, httpMiddlewares [](func(next http.Handler) http.Handler)) (*rpc.Server, error) {
srv := rpc.NewServer()
err := node.RegisterApis(apis, modules, srv)
if err != nil {
utils.Fatalf("Could not register HTTP API: %w", err)
}
promHandler := prom.HTTPMiddleware(node.NewHTTPHandlerStack(srv, cors, vhosts, nil))
// Chain the HTTP middlewares
handler := promHandler
for _, middleware := range httpMiddlewares {
handler = middleware(handler)
}
// start http server
// request -> payments -> metrics -> server
_, addr, err := node.StartHTTPEndpoint(endpoint, rpc.DefaultHTTPTimeouts, handler)
if err != nil {
utils.Fatalf("Could not start RPC api: %v", err)
}
extapiURL := fmt.Sprintf("http://%s", addr)
log.Infof("HTTP endpoint opened at %s", extapiURL)
return srv, err
}