clair/clair.go
Quentin Machu eb7e5d5c74 main: Use configuration file instead of flags and simplify app extension.
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.
2015-12-08 11:50:52 -05:00

75 lines
2.0 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 clair implements the ability to boot Clair with your own imports
// that can dynamically register additional functionality.
package clair
import (
"math/rand"
"os"
"os/signal"
"time"
"github.com/coreos/clair/api"
"github.com/coreos/clair/config"
"github.com/coreos/clair/database"
"github.com/coreos/clair/notifier"
"github.com/coreos/clair/updater"
"github.com/coreos/clair/utils"
"github.com/coreos/pkg/capnslog"
)
var log = capnslog.NewPackageLogger("github.com/coreos/clair", "main")
// Boot starts Clair. By exporting this function, anyone can import their own
// custom fetchers/updaters into their own package and then call clair.Boot.
func Boot(config *config.Config) {
rand.Seed(time.Now().UnixNano())
st := utils.NewStopper()
// Open database
err := database.Open(config.Database)
if err != nil {
log.Fatal(err)
}
defer database.Close()
// Start notifier
st.Begin()
notifier := notifier.New(config.Notifier)
go notifier.Serve(st)
// Start API
st.Begin()
go api.Run(config.API, st)
st.Begin()
go api.RunHealth(config.API, st)
// Start updater
st.Begin()
go updater.Run(config.Updater, st)
// Wait for interruption and shutdown gracefully.
waitForSignals(os.Interrupt)
log.Info("Received interruption, gracefully stopping ...")
st.Stop()
}
func waitForSignals(signals ...os.Signal) {
interrupts := make(chan os.Signal, 1)
signal.Notify(interrupts, signals...)
<-interrupts
}