GetServiceTag read service tag name to match service that has added in.

NewApp create a new app.

CommandHelpTemplate general template of command.

ConfigFileFlag general config file flag.

ErrConfigiNotFound print error msg.

ErrNotMatchedService print error msg.

ErrServiceNotFound print error msg.

HomeDirFlag general home directory flag.

PprofFlag general pprof flag.

API describes the set of methods offered over the RPC interface.

CommonConfig read before app run,this fuction shared by other moudles.

DrepApp based on the cli.App, the module service operation is encapsulated.

ExecuteContext centralizes all the data and global parameters of application execution, and each service can read the part it needs.

OrService define interface of OrService.

Service can customize their own configuration, command parameters, interfaces, services.

Option type definition.