clair/clair.go

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// 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/pgsql"
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"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
db, err := pgsql.Open(config.Database)
if err != nil {
log.Fatal(err)
}
defer db.Close()
// Start notifier
// st.Begin()
// go notifier.Run(config.Notifier, st)
// Start API
st.Begin()
go api.Run(config.API, &api.Env{Datastore: db}, st)
st.Begin()
go api.RunHealth(config.API, &api.Env{Datastore: db}, st)
// Start updater
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st.Begin()
go updater.Run(config.Updater, db, 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
}