metric_parser

Documentation

Index

• Constants
• func Parse(filename string, b []byte, opts ...Option) (interface{}, error)
• func ParseFile(filename string, opts ...Option) (interface{}, error)
• func ParseReader(filename string, r io.Reader, opts ...Option) (interface{}, error)
• func ParseToMetricFilter(dsl string) (model.MetricFilter, error)
• type Option
  • func Debug(b bool) Option
  • func Memoize(b bool) Option
  • func Recover(b bool) Option

Constants

const (
	MetricMax         metricType = 1
	MetricMin         metricType = 2
	MetricAvg         metricType = 3
	MetricMed         metricType = 4
	MetricMdev        metricType = 5
	MetricLoss        metricType = 6
	MetricCount       metricType = 7
	MetricPckSent     metricType = 8
	MetricPckReceived metricType = 9
	MetricNumAgent    metricType = 10
	MetricNumTarget   metricType = 11
)

Functions

func Parse

func Parse(filename string, b []byte, opts ...Option) (interface{}, error)

Parse parses the data from b using filename as information in the error messages.

func ParseFile

func ParseFile(filename string, opts ...Option) (interface{}, error)

ParseFile parses the file identified by filename.

func ParseReader

func ParseReader(filename string, r io.Reader, opts ...Option) (interface{}, error)

ParseReader parses the data from r using filename as information in the error messages.

func ParseToMetricFilter

func ParseToMetricFilter(dsl string) (model.MetricFilter, error)

Types

type Option

type Option func(*parser) Option

Option is a function that can set an option on the parser. It returns the previous setting as an Option.

func Debug

func Debug(b bool) Option

Debug creates an Option to set the debug flag to b. When set to true, debugging information is printed to stdout while parsing.

The default is false.

func Memoize

func Memoize(b bool) Option

Memoize creates an Option to set the memoize flag to b. When set to true, the parser will cache all results so each expression is evaluated only once. This guarantees linear parsing time even for pathological cases, at the expense of more memory and slower times for typical cases.

The default is false.

func Recover

func Recover(b bool) Option

Recover creates an Option to set the recover flag to b. When set to true, this causes the parser to recover from panics and convert it to an error. Setting it to false can be useful while debugging to access the full stack trace.

The default is true.