lotus/cmd/lotus-gateway/main.go
2021-03-23 16:40:22 +01:00

147 lines
3.3 KiB
Go

package main
import (
"context"
"net"
"net/http"
"os"
"contrib.go.opencensus.io/exporter/prometheus"
"github.com/filecoin-project/go-jsonrpc"
promclient "github.com/prometheus/client_golang/prometheus"
"go.opencensus.io/tag"
"github.com/filecoin-project/lotus/build"
lcli "github.com/filecoin-project/lotus/cli"
"github.com/filecoin-project/lotus/lib/lotuslog"
"github.com/filecoin-project/lotus/metrics"
logging "github.com/ipfs/go-log"
"go.opencensus.io/stats/view"
"github.com/gorilla/mux"
"github.com/urfave/cli/v2"
)
var log = logging.Logger("gateway")
func main() {
lotuslog.SetupLogLevels()
local := []*cli.Command{
runCmd,
}
app := &cli.App{
Name: "lotus-gateway",
Usage: "Public API server for lotus",
Version: build.UserVersion(),
Flags: []cli.Flag{
&cli.StringFlag{
Name: "repo",
EnvVars: []string{"LOTUS_PATH"},
Value: "~/.lotus", // TODO: Consider XDG_DATA_HOME
},
},
Commands: local,
}
app.Setup()
if err := app.Run(os.Args); err != nil {
log.Warnf("%+v", err)
return
}
}
var runCmd = &cli.Command{
Name: "run",
Usage: "Start api server",
Flags: []cli.Flag{
&cli.StringFlag{
Name: "listen",
Usage: "host address and port the api server will listen on",
Value: "0.0.0.0:2346",
},
&cli.IntFlag{
Name: "api-max-req-size",
Usage: "maximum API request size accepted by the JSON RPC server",
},
},
Action: func(cctx *cli.Context) error {
log.Info("Starting lotus gateway")
ctx := lcli.ReqContext(cctx)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
// Register all metric views
if err := view.Register(
metrics.ChainNodeViews...,
); err != nil {
log.Fatalf("Cannot register the view: %v", err)
}
api, closer, err := lcli.GetFullNodeAPI(cctx)
if err != nil {
return err
}
defer closer()
address := cctx.String("listen")
mux := mux.NewRouter()
log.Info("Setting up API endpoint at " + address)
serverOptions := make([]jsonrpc.ServerOption, 0)
if maxRequestSize := cctx.Int("api-max-req-size"); maxRequestSize != 0 {
serverOptions = append(serverOptions, jsonrpc.WithMaxRequestSize(int64(maxRequestSize)))
}
rpcServer := jsonrpc.NewServer(serverOptions...)
rpcServer.Register("Filecoin", metrics.MetricedGatewayAPI(NewGatewayAPI(api)))
mux.Handle("/rpc/v0", rpcServer) // todo: v1 support
registry := promclient.DefaultRegisterer.(*promclient.Registry)
exporter, err := prometheus.NewExporter(prometheus.Options{
Registry: registry,
Namespace: "lotus_gw",
})
if err != nil {
return err
}
mux.Handle("/debug/metrics", exporter)
mux.PathPrefix("/").Handler(http.DefaultServeMux)
/*ah := &auth.Handler{
Verify: nodeApi.AuthVerify,
Next: mux.ServeHTTP,
}*/
srv := &http.Server{
Handler: mux,
BaseContext: func(listener net.Listener) context.Context {
ctx, _ := tag.New(context.Background(), tag.Upsert(metrics.APIInterface, "lotus-gateway"))
return ctx
},
}
go func() {
<-ctx.Done()
log.Warn("Shutting down...")
if err := srv.Shutdown(context.TODO()); err != nil {
log.Errorf("shutting down RPC server failed: %s", err)
}
log.Warn("Graceful shutdown successful")
}()
nl, err := net.Listen("tcp", address)
if err != nil {
return err
}
return srv.Serve(nl)
},
}