GetRealSession use to get real session name.

GetSession use to get session name if it has real session, otherwise return context name instead.

an official Context, an Env and a Logger.

NewEnv return a simple Env, use sync.Map as it's storage.

NewLogger return a Logger, with name and location.

SetSession use to set real session name.

Simple return a very simple context, without name, without location, and use zap.S() as internal logger.

variable alias.

variable alias.

Context extend default context package, make it better It should has name, location, environment and logger.

Env should used as a map, but it has an inherited mode, overlay liked.

Logger is a logger, but it has name and location.

type alias.

LocationJoiner will generate a full location after joining the origin and given.

NameJoiner will generate a full name after joining the origin and given.