ipld-eth-db-validator/pkg/prom/serve.go

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// VulcanizeDB
// Copyright © 2022 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 prom
import (
"errors"
"net/http"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/sirupsen/logrus"
)
var errPromHTTP = errors.New("can't start http server for prometheus")
// Serve start listening http
func Serve(addr string) *http.Server {
mux := http.NewServeMux()
mux.Handle("/metrics", promhttp.Handler())
srv := http.Server{
Addr: addr,
Handler: mux,
}
go func() {
if err := srv.ListenAndServe(); err != nil {
logrus.
WithError(err).
WithField("module", "prom").
WithField("addr", addr).
Fatal(errPromHTTP)
}
}()
return &srv
}