106 lines
3.1 KiB
Go
106 lines
3.1 KiB
Go
// Copyright 2018 clair authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package v3
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import (
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"net/http"
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"strconv"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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log "github.com/sirupsen/logrus"
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"google.golang.org/grpc"
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pb "github.com/coreos/clair/api/v3/clairpb"
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"github.com/coreos/clair/database"
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"github.com/coreos/clair/pkg/grpcutil"
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)
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var (
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promResponseDurationMilliseconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
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Name: "clair_v3_api_response_duration_milliseconds",
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Help: "The duration of time it takes to receive and write a response to an V2 API request",
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Buckets: prometheus.ExponentialBuckets(9.375, 2, 10),
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}, []string{"route", "code"})
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)
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func init() {
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prometheus.MustRegister(promResponseDurationMilliseconds)
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}
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func prometheusHandler(h http.Handler) http.Handler {
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mux := http.NewServeMux()
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mux.Handle("/", h)
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mux.Handle("/metrics", prometheus.Handler())
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return mux
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}
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type httpStatusWriter struct {
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http.ResponseWriter
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StatusCode int
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}
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func (w *httpStatusWriter) WriteHeader(code int) {
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w.StatusCode = code
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w.ResponseWriter.WriteHeader(code)
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}
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func loggingHandler(h http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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start := time.Now()
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lrw := &httpStatusWriter{ResponseWriter: w, StatusCode: http.StatusOK}
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h.ServeHTTP(lrw, r)
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log.WithFields(log.Fields{
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"remote addr": r.RemoteAddr,
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"method": r.Method,
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"request uri": r.RequestURI,
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"status": strconv.Itoa(lrw.StatusCode),
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"elapsed time (ms)": float64(time.Since(start).Nanoseconds()) * 1e-6,
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}).Info("handled HTTP request")
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})
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}
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// ListenAndServe serves the Clair v3 API over gRPC and the gRPC Gateway.
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func ListenAndServe(addr, certFile, keyFile, caPath string, store database.Datastore) error {
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srv := grpcutil.MuxedGRPCServer{
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Addr: addr,
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ServicesFunc: func(gsrv *grpc.Server) {
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pb.RegisterAncestryServiceServer(gsrv, &AncestryServer{Store: store})
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pb.RegisterNotificationServiceServer(gsrv, &NotificationServer{Store: store})
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pb.RegisterStatusServiceServer(gsrv, &StatusServer{Store: store})
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},
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ServiceHandlerFuncs: []grpcutil.RegisterServiceHandlerFunc{
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pb.RegisterAncestryServiceHandler,
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pb.RegisterNotificationServiceHandler,
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pb.RegisterStatusServiceHandler,
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},
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}
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middleware := func(h http.Handler) http.Handler {
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return prometheusHandler(loggingHandler(h))
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}
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var err error
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if caPath == "" {
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err = srv.ListenAndServe(middleware)
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} else {
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err = srv.ListenAndServeTLS(certFile, keyFile, caPath, middleware)
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}
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return err
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}
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