// New creates and returns a new Server object with the provided Options as
// configuration.
func New(options *Options) *Server {
s := &Server{
log: logray.New(),
options: options,
}
return s
}
// Run takes over the process and launches KurmaOS.
func Run() error {
r := &runner{
config: defaultConfiguration(),
log: logray.New(),
}
return r.Run()
}
// New creates and returns a new Server object with the provided Options as
// configuration.
func New(options *Options) *Server {
if options.BindAddress == "" {
options.BindAddress = ":12312"
}
s := &Server{
log: logray.New(),
options: options,
}
return s
}
func main() {
var configFile string
var logLevel string
flag.StringVar(&configFile, "f", "", "file to use to define processes")
flag.StringVar(&logLevel, "log-levle", "info+", "log message levels to be logged")
flag.Parse()
// validate we have a config file
if configFile == "" {
fmt.Fprint(os.Stderr, "No config file specified with -f\n")
os.Exit(1)
}
// validate the configured log level
logclass, err := logray.ParseLogClass(logLevel)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to parse log class: %v\n", err)
os.Exit(1)
}
logray.AddDefaultOutput("stdout://", logclass)
log = logray.New()
// load the config file
config, err := loadConfig(configFile)
if err != nil {
fmt.Fprintf(os.Stderr, "Failed to load config file: %v\n", err)
os.Exit(1)
}
// begin the signal handling
handleSigterm()
// begin managing processes
wg := sync.WaitGroup{}
for _, args := range config {
wg.Add(1)
go func(args []string) {
defer wg.Done()
manageProcess(args)
}(args)
}
// wait for all to finish
wg.Wait()
}
func ExamplePass() {
// Setup
buffer := unittest.SetupBuffer()
defer buffer.DumpToStdout()
// Log a bunch of stuff.
logger := logray.New()
fmt.Println("Expected output.")
logger.Info("log line 1")
logger.Info("log line 2")
logger.Info("log line 3")
// Clear the buffer so nothing ends up on stdout.
buffer.Clear()
// Output: Expected output.
}
// NewManager creates a new Manager with the provided options. It will ensure
// the manager is setup and ready to create containers with the provided
// configuration.
func NewManager(opts *Options) (*Manager, error) {
// validate cgroups is properly setup on the host
if err := cgroups.CheckCgroups(); err != nil {
return nil, fmt.Errorf("failed to check cgroups: %v", err)
}
// create the parent cgroup for all child containers to be in
cg, err := cgroups.New(opts.ParentCgroupName)
if err != nil {
return nil, err
}
m := &Manager{
Log: logray.New(),
containers: make(map[string]*Container),
containerDirectory: opts.ContainerDirectory,
volumeDirectory: opts.VolumeDirectory,
cgroup: cg,
requiredNamespaces: opts.RequiredNamespaces,
}
return m, nil
}