kubernetes/vendor/go.uber.org/zap/http_handler.go

// ServeHTTP is a simple JSON endpoint that can report on or change the current
// logging level.
//
// # GET
//
// The GET request returns a JSON description of the current logging level like:
//
//	{"level":"info"}
//
// # PUT
//
// The PUT request changes the logging level. It is perfectly safe to change the
// logging level while a program is running. Two content types are supported:
//
//	Content-Type: application/x-www-form-urlencoded
//
// With this content type, the level can be provided through the request body or
// a query parameter. The log level is URL encoded like:
//
//	level=debug
//
// The request body takes precedence over the query parameter, if both are
// specified.
//
// This content type is the default for a curl PUT request. Following are two
// example curl requests that both set the logging level to debug.
//
//	curl -X PUT localhost:8080/log/level?level=debug
//	curl -X PUT localhost:8080/log/level -d level=debug
//
// For any other content type, the payload is expected to be JSON encoded and
// look like:
//
//	{"level":"info"}
//
// An example curl request could look like this:
//
//	curl -X PUT localhost:8080/log/level -H "Content-Type: application/json" -d '{"level":"debug"}'
func (lvl AtomicLevel) ServeHTTP(w http.ResponseWriter, r *http.Request) { … }

func (lvl AtomicLevel) serveHTTP(w http.ResponseWriter, r *http.Request) error { … }

// Decodes incoming PUT requests and returns the requested logging level.
func decodePutRequest(contentType string, r *http.Request) (zapcore.Level, error) { … }

func decodePutURL(r *http.Request) (zapcore.Level, error) { … }

func decodePutJSON(body io.Reader) (zapcore.Level, error) { … }