distribution/cmd/registry/main.go
Stephen J Day d0abfe0b92 Report version in registry binary
We've added support to the registry command to report the current version of
the distribution package. The version package is generated with a shell script
that gets the latest tag and add "+unknown". This allows builds from "go get"
and "go install" to have a rough version number. Generated periodically, it
will provide a decent indication of what code built the binary. For more
accurate versioning, one can build with the "binaries" make target. Linker
flags are used to replace the version string with the actual current tag at
build time.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
2015-01-29 18:32:01 -08:00

142 lines
3.4 KiB
Go

package main
import (
"flag"
"fmt"
"io"
"net/http"
_ "net/http/pprof"
"os"
log "github.com/Sirupsen/logrus"
"github.com/bugsnag/bugsnag-go"
"github.com/gorilla/handlers"
"github.com/yvasiyarov/gorelic"
_ "github.com/docker/distribution/auth/silly"
_ "github.com/docker/distribution/auth/token"
"github.com/docker/distribution/configuration"
"github.com/docker/distribution/registry"
_ "github.com/docker/distribution/storagedriver/filesystem"
_ "github.com/docker/distribution/storagedriver/inmemory"
_ "github.com/docker/distribution/storagedriver/s3"
"github.com/docker/distribution/version"
)
var showVersion bool
func init() {
flag.BoolVar(&showVersion, "version", false, "show the version and exit")
}
func main() {
flag.Usage = usage
flag.Parse()
if showVersion {
printVersion(os.Stdout)
return
}
config, err := resolveConfiguration()
if err != nil {
fatalf("configuration error: %v", err)
}
app := registry.NewApp(*config)
handler := configureReporting(app)
handler = handlers.CombinedLoggingHandler(os.Stdout, handler)
log.SetLevel(logLevel(config.Loglevel))
log.Infof("listening on %v", config.HTTP.Addr)
if err := http.ListenAndServe(config.HTTP.Addr, handler); err != nil {
log.Fatalln(err)
}
}
func usage() {
fmt.Fprintln(os.Stderr, "usage:", os.Args[0], "<config>")
flag.PrintDefaults()
}
func printVersion(w io.Writer) {
fmt.Fprintln(w, os.Args[0], version.Package, version.Version)
}
func fatalf(format string, args ...interface{}) {
fmt.Fprintf(os.Stderr, format+"\n", args...)
usage()
os.Exit(1)
}
func resolveConfiguration() (*configuration.Configuration, error) {
var configurationPath string
if flag.NArg() > 0 {
configurationPath = flag.Arg(0)
} else if os.Getenv("REGISTRY_CONFIGURATION_PATH") != "" {
configurationPath = os.Getenv("REGISTRY_CONFIGURATION_PATH")
}
if configurationPath == "" {
return nil, fmt.Errorf("configuration path unspecified")
}
fp, err := os.Open(configurationPath)
if err != nil {
return nil, err
}
config, err := configuration.Parse(fp)
if err != nil {
return nil, fmt.Errorf("error parsing %s: %v", configurationPath, err)
}
return config, nil
}
func logLevel(level configuration.Loglevel) log.Level {
l, err := log.ParseLevel(string(level))
if err != nil {
log.Warnf("error parsing level %q: %v", level, err)
l = log.InfoLevel
}
return l
}
func configureReporting(app *registry.App) http.Handler {
var handler http.Handler = app
if app.Config.Reporting.Bugsnag.APIKey != "" {
bugsnagConfig := bugsnag.Configuration{
APIKey: app.Config.Reporting.Bugsnag.APIKey,
// TODO(brianbland): provide the registry version here
// AppVersion: "2.0",
}
if app.Config.Reporting.Bugsnag.ReleaseStage != "" {
bugsnagConfig.ReleaseStage = app.Config.Reporting.Bugsnag.ReleaseStage
}
if app.Config.Reporting.Bugsnag.Endpoint != "" {
bugsnagConfig.Endpoint = app.Config.Reporting.Bugsnag.Endpoint
}
bugsnag.Configure(bugsnagConfig)
handler = bugsnag.Handler(handler)
}
if app.Config.Reporting.NewRelic.LicenseKey != "" {
agent := gorelic.NewAgent()
agent.NewrelicLicense = app.Config.Reporting.NewRelic.LicenseKey
if app.Config.Reporting.NewRelic.Name != "" {
agent.NewrelicName = app.Config.Reporting.NewRelic.Name
}
agent.CollectHTTPStat = true
agent.Verbose = true
agent.Run()
handler = agent.WrapHTTPHandler(handler)
}
return handler
}