func (c *commandRunner) Command(args []string, deps commandregistry.Dependency, pluginApiCall bool) (err error) {
cmdRegistry := commandregistry.Commands
if cmdRegistry.CommandExists(args[0]) {
fc := flags.NewFlagContext(cmdRegistry.FindCommand(args[0]).MetaData().Flags)
err = fc.Parse(args[1:]...)
if err != nil {
return err
}
cfCmd := cmdRegistry.FindCommand(args[0])
cfCmd = cfCmd.SetDependency(deps, pluginApiCall)
reqs, reqErr := cfCmd.Requirements(requirements.NewFactory(deps.Config, deps.RepoLocator), fc)
if reqErr != nil {
return reqErr
}
for _, r := range reqs {
if err = r.Execute(); err != nil {
return err
}
}
defer func() {
if r := recover(); r != nil {
err = fmt.Errorf("command panic: %v", r)
}
}()
return cfCmd.Execute(fc)
}
return nil
}
func Main(traceEnv string, args []string) {
//handle `cf -v` for cf version
if len(args) == 2 && (args[1] == "-v" || args[1] == "--version") {
args[1] = "version"
}
//handles `cf`
if len(args) == 1 {
args = []string{args[0], "help"}
}
//handles `cf [COMMAND] -h ...`
//rearrange args to `cf help COMMAND` and let `command help` to print out usage
args = append([]string{args[0]}, handleHelp(args[1:])...)
newArgs, isVerbose := handleVerbose(args)
args = newArgs
errFunc := func(err error) {
if err != nil {
ui := terminal.NewUI(
os.Stdin,
Writer,
terminal.NewTeePrinter(Writer),
trace.NewLogger(Writer, isVerbose, traceEnv, ""),
)
ui.Failed(fmt.Sprintf("Config error: %s", err))
os.Exit(1)
}
}
// Only used to get Trace, so our errorHandler doesn't matter, since it's not used
configPath, err := confighelpers.DefaultFilePath()
if err != nil {
errFunc(err)
}
config := coreconfig.NewRepositoryFromFilepath(configPath, errFunc)
defer config.Close()
traceConfigVal := config.Trace()
// Writer is assigned in writer_unix.go/writer_windows.go
traceLogger := trace.NewLogger(Writer, isVerbose, traceEnv, traceConfigVal)
deps := commandregistry.NewDependency(Writer, traceLogger, os.Getenv("CF_DIAL_TIMEOUT"))
defer deps.Config.Close()
warningProducers := []net.WarningProducer{}
for _, warningProducer := range deps.Gateways {
warningProducers = append(warningProducers, warningProducer)
}
warningsCollector := net.NewWarningsCollector(deps.UI, warningProducers...)
commandsloader.Load()
//run core command
cmdName := args[1]
cmd := cmdRegistry.FindCommand(cmdName)
if cmd != nil {
meta := cmd.MetaData()
flagContext := flags.NewFlagContext(meta.Flags)
flagContext.SkipFlagParsing(meta.SkipFlagParsing)
cmdArgs := args[2:]
err = flagContext.Parse(cmdArgs...)
if err != nil {
usage := cmdRegistry.CommandUsage(cmdName)
deps.UI.Failed(T("Incorrect Usage") + "\n\n" + err.Error() + "\n\n" + usage)
}
cmd = cmd.SetDependency(deps, false)
cmdRegistry.SetCommand(cmd)
requirementsFactory := requirements.NewFactory(deps.Config, deps.RepoLocator)
reqs, reqErr := cmd.Requirements(requirementsFactory, flagContext)
if reqErr != nil {
os.Exit(1)
}
for _, req := range reqs {
err = req.Execute()
if err != nil {
deps.UI.Failed(err.Error())
os.Exit(1)
}
}
err = cmd.Execute(flagContext)
if err != nil {
deps.UI.Failed(err.Error())
os.Exit(1)
}
err = warningsCollector.PrintWarnings()
if err != nil {
deps.UI.Failed(err.Error())
os.Exit(1)
}
os.Exit(0)
}
//non core command, try plugin command
server := netrpc.NewServer()
rpcService, err := rpc.NewRpcService(deps.TeePrinter, deps.TeePrinter, deps.Config, deps.RepoLocator, rpc.NewCommandRunner(), deps.Logger, Writer, server)
if err != nil {
deps.UI.Say(T("Error initializing RPC service: ") + err.Error())
os.Exit(1)
}
pluginPath := filepath.Join(confighelpers.PluginRepoDir(), ".cf", "plugins")
pluginConfig := pluginconfig.NewPluginConfig(
func(err error) {
deps.UI.Failed(fmt.Sprintf("Error read/writing plugin config: %s, ", err.Error()))
},
configuration.NewDiskPersistor(filepath.Join(pluginPath, "config.json")),
pluginPath,
)
pluginList := pluginConfig.Plugins()
ran := rpc.RunMethodIfExists(rpcService, args[1:], pluginList)
if !ran {
deps.UI.Say("'" + args[1] + T("' is not a registered command. See 'cf help'"))
suggestCommands(cmdName, deps.UI, append(cmdRegistry.ListCommands(), pluginConfig.ListCommands()...))
os.Exit(1)
}
}