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package main
import (
"flag"
"os"
log "github.com/sirupsen/logrus"
"gitlab.com/gitlab-org/gitlab-shell/internal/config"
"gitlab.com/gitlab-org/gitlab-shell/internal/logger"
"gitlab.com/gitlab-org/gitlab-shell/internal/sshd"
"gitlab.com/gitlab-org/labkit/monitoring"
)
var (
configDir = flag.String("config-dir", "", "The directory the config is in")
// BuildTime signifies the time the binary was build.
BuildTime = "2021-02-16T09:28:07+01:00" // Set at build time in the Makefile
// Version is the current version of GitLab Shell sshd.
Version = "(unknown version)" // Set at build time in the Makefile
)
func overrideConfigFromEnvironment(cfg *config.Config) {
if gitlabUrl := os.Getenv("GITLAB_URL"); gitlabUrl != "" {
cfg.GitlabUrl = gitlabUrl
}
if gitlabTracing := os.Getenv("GITLAB_TRACING"); gitlabTracing != "" {
cfg.GitlabTracing = gitlabTracing
}
if gitlabShellSecret := os.Getenv("GITLAB_SHELL_SECRET"); gitlabShellSecret != "" {
cfg.Secret = gitlabShellSecret
}
if gitlabLogFormat := os.Getenv("GITLAB_LOG_FORMAT"); gitlabLogFormat != "" {
cfg.LogFormat = gitlabLogFormat
}
return
}
func main() {
flag.Parse()
cfg := new(config.Config)
if *configDir != "" {
var err error
cfg, err = config.NewFromDir(*configDir)
if err != nil {
log.Fatalf("failed to load configuration from specified directory: %v", err)
}
}
overrideConfigFromEnvironment(cfg)
if err := cfg.IsSane(); err != nil {
if *configDir == "" {
log.Warn("note: no config-dir provided, using only environment variables")
}
log.Fatalf("configuration error: %v", err)
}
logger.ConfigureStandalone(cfg)
// Startup monitoring endpoint.
if cfg.Server.WebListen != "" {
go func() {
log.Fatal(
monitoring.Start(
monitoring.WithListenerAddress(cfg.Server.WebListen),
monitoring.WithBuildInformation(Version, BuildTime),
),
)
}()
}
if err := sshd.Run(cfg); err != nil {
log.Fatalf("Failed to start GitLab built-in sshd: %v", err)
}
}
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