clair/api/v1/router.go
Sida Chen c6f0eaa3c8 api: fix remote addr shows reverse proxy addr problem
Uses the first ip addr in X-forwarded-for as the client's remote addr if it exists
otherwise, fall back to use default http.Request.RemoteAddr
2017-06-16 10:08:58 -04:00

101 lines
3.8 KiB
Go

// Copyright 2015 clair authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package v1 implements the first version of the Clair API.
package v1
import (
"net/http"
"strconv"
"time"
"github.com/julienschmidt/httprouter"
"github.com/prometheus/client_golang/prometheus"
log "github.com/sirupsen/logrus"
"github.com/coreos/clair/api/httputil"
"github.com/coreos/clair/database"
)
var (
promResponseDurationMilliseconds = prometheus.NewHistogramVec(prometheus.HistogramOpts{
Name: "clair_api_response_duration_milliseconds",
Help: "The duration of time it takes to receieve and write a response to an API request",
Buckets: prometheus.ExponentialBuckets(9.375, 2, 10),
}, []string{"route", "code"})
)
func init() {
prometheus.MustRegister(promResponseDurationMilliseconds)
}
type handler func(http.ResponseWriter, *http.Request, httprouter.Params, *context) (route string, status int)
func httpHandler(h handler, ctx *context) httprouter.Handle {
return func(w http.ResponseWriter, r *http.Request, p httprouter.Params) {
start := time.Now()
route, status := h(w, r, p, ctx)
statusStr := strconv.Itoa(status)
if status == 0 {
statusStr = "???"
}
promResponseDurationMilliseconds.
WithLabelValues(route, statusStr).
Observe(float64(time.Since(start).Nanoseconds()) / float64(time.Millisecond))
log.WithFields(log.Fields{"remote addr": httputil.GetClientAddr(r), "method": r.Method, "request uri": r.RequestURI, "status": statusStr, "elapsed time": time.Since(start)}).Info("Handled HTTP request")
}
}
type context struct {
Store database.Datastore
PaginationKey string
}
// NewRouter creates an HTTP router for version 1 of the Clair API.
func NewRouter(store database.Datastore, paginationKey string) *httprouter.Router {
router := httprouter.New()
ctx := &context{store, paginationKey}
// Layers
router.POST("/layers", httpHandler(postLayer, ctx))
router.GET("/layers/:layerName", httpHandler(getLayer, ctx))
router.DELETE("/layers/:layerName", httpHandler(deleteLayer, ctx))
// Namespaces
router.GET("/namespaces", httpHandler(getNamespaces, ctx))
// Vulnerabilities
router.GET("/namespaces/:namespaceName/vulnerabilities", httpHandler(getVulnerabilities, ctx))
router.POST("/namespaces/:namespaceName/vulnerabilities", httpHandler(postVulnerability, ctx))
router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(getVulnerability, ctx))
router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(putVulnerability, ctx))
router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName", httpHandler(deleteVulnerability, ctx))
// Fixes
router.GET("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes", httpHandler(getFixes, ctx))
router.PUT("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", httpHandler(putFix, ctx))
router.DELETE("/namespaces/:namespaceName/vulnerabilities/:vulnerabilityName/fixes/:fixName", httpHandler(deleteFix, ctx))
// Notifications
router.GET("/notifications/:notificationName", httpHandler(getNotification, ctx))
router.DELETE("/notifications/:notificationName", httpHandler(deleteNotification, ctx))
// Metrics
router.GET("/metrics", httpHandler(getMetrics, ctx))
return router
}