forked from cerc-io/ipld-eth-server
Thomas E Lackey
190d0d7ac9
1. Improve logging to include API method, user ID, etc in the output. We do this by intercepting the request details in the "middleware" and adding them to the request context, as well as adding a wrapper to logrus that simplifies including the fields in the output. 2. Breakdown API metrics by method. This will allow us to differentiate call counts and durations by API method (eg, eth_call vs eth_getStorageAt).
93 lines
2.6 KiB
Go
93 lines
2.6 KiB
Go
// VulcanizeDB
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// Copyright © 2020 Vulcanize
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package rpc
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"github.com/cerc-io/ipld-eth-server/v4/pkg/log"
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"github.com/ethereum/go-ethereum/p2p/netutil"
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"github.com/ethereum/go-ethereum/rpc"
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"github.com/cerc-io/ipld-eth-server/v4/pkg/prom"
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)
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var (
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// On Linux, sun_path is 108 bytes in size
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// see http://man7.org/linux/man-pages/man7/unix.7.html
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maxPathSize = 108
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)
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// ipcListen will create a Unix socket on the given endpoint.
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func ipcListen(endpoint string) (net.Listener, error) {
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if len(endpoint) > int(maxPathSize) {
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log.Warn(fmt.Sprintf("The ipc endpoint is longer than %d characters. ", maxPathSize),
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"endpoint", endpoint)
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}
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// Ensure the IPC path exists and remove any previous leftover
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if err := os.MkdirAll(filepath.Dir(endpoint), 0751); err != nil {
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return nil, err
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}
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os.Remove(endpoint)
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l, err := net.Listen("unix", endpoint)
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if err != nil {
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return nil, err
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}
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os.Chmod(endpoint, 0600)
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return l, nil
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}
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func ipcServe(srv *rpc.Server, listener net.Listener) {
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for {
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conn, err := listener.Accept()
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if netutil.IsTemporaryError(err) {
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log.WithError(err).Warn("rpc accept error")
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continue
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}
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if err != nil {
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log.WithError(err).Warn("unknown error")
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continue
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}
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log.WithField("addr", conn.RemoteAddr()).Trace("accepted ipc connection")
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go prom.IPCMiddleware(srv, conn)
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}
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}
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// StartIPCEndpoint starts an IPC endpoint.
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func StartIPCEndpoint(ipcEndpoint string, apis []rpc.API) (net.Listener, *rpc.Server, error) {
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// Register all the APIs exposed by the services.
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handler := rpc.NewServer()
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for _, api := range apis {
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if err := handler.RegisterName(api.Namespace, api.Service); err != nil {
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return nil, nil, err
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}
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log.Debug("IPC registered", "namespace", api.Namespace)
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}
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// All APIs registered, start the IPC listener.
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listener, err := ipcListen(ipcEndpoint)
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if err != nil {
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return nil, nil, err
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}
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go ipcServe(handler, listener)
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return listener, handler, nil
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}
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