eb7e5d5c74
Clair will now use a YAML configuration file instead of command line arguments as the number of parameters grows. Also, Clair now exposes a Boot() func that allows everyone to easily create their own project and load dynamically their own fetchers/updaters.
113 lines
3.3 KiB
Go
113 lines
3.3 KiB
Go
// Copyright 2015 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 api provides a RESTful HTTP API, enabling external apps to interact
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// with clair.
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package api
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import (
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"net"
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"net/http"
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"strconv"
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"time"
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"github.com/coreos/pkg/capnslog"
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"github.com/tylerb/graceful"
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"github.com/coreos/clair/config"
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"github.com/coreos/clair/utils"
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httputils "github.com/coreos/clair/utils/http"
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)
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var log = capnslog.NewPackageLogger("github.com/coreos/clair", "api")
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// Run launches the main API, which exposes every possible interactions
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// with clair.
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func Run(config *config.APIConfig, st *utils.Stopper) {
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defer st.End()
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// Do not run the API service if there is no config.
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if config == nil {
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log.Infof("main API service is disabled.")
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return
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}
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log.Infof("starting main API on port %d.", config.Port)
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tlsConfig, err := httputils.LoadTLSClientConfigForServer(config.CAFile)
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if err != nil {
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log.Fatalf("could not initialize client cert authentification: %s\n", err)
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}
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if tlsConfig != nil {
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log.Info("main API configured with client certificate authentification")
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}
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srv := &graceful.Server{
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Timeout: 0, // Already handled by our TimeOut middleware
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NoSignalHandling: true, // We want to use our own Stopper
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Server: &http.Server{
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Addr: ":" + strconv.Itoa(config.Port),
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TLSConfig: tlsConfig,
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Handler: NewVersionRouter(config.Timeout),
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},
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}
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listenAndServeWithStopper(srv, st, config.CertFile, config.KeyFile)
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log.Info("main API stopped")
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}
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// RunHealth launches the Health API, which only exposes a method to fetch
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// Clair's health without any security or authentification mechanism.
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func RunHealth(config *config.APIConfig, st *utils.Stopper) {
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defer st.End()
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// Do not run the API service if there is no config.
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if config == nil {
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log.Infof("health API service is disabled.")
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return
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}
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log.Infof("starting health API on port %d.", config.HealthPort)
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srv := &graceful.Server{
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Timeout: 10 * time.Second, // Interrupt health checks when stopping
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NoSignalHandling: true, // We want to use our own Stopper
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Server: &http.Server{
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Addr: ":" + strconv.Itoa(config.HealthPort),
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Handler: NewHealthRouter(),
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},
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}
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listenAndServeWithStopper(srv, st, "", "")
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log.Info("health API stopped")
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}
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// listenAndServeWithStopper wraps graceful.Server's
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// ListenAndServe/ListenAndServeTLS and adds the ability to interrupt them with
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// the provided utils.Stopper
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func listenAndServeWithStopper(srv *graceful.Server, st *utils.Stopper, certFile, keyFile string) {
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go func() {
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<-st.Chan()
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srv.Stop(0)
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}()
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var err error
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if certFile != "" && keyFile != "" {
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log.Info("API: TLS Enabled")
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err = srv.ListenAndServeTLS(certFile, keyFile)
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} else {
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err = srv.ListenAndServe()
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}
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if opErr, ok := err.(*net.OpError); !ok || (ok && opErr.Op != "accept") {
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log.Fatal(err)
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}
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}
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