nqm_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)
• type NodeFilter
• type NodeFilterById
• type Option
  • func Debug(b bool) Option
  • func Memoize(b bool) Option
  • func Recover(b bool) Option
• type QueryParams
  • func NewQueryParams() *QueryParams
  • func (p *QueryParams) CheckRationalOfParameters() error
  • func (p *QueryParams) SetUpParams(paramSetters interface{})

Constants

const FORMAT_ERROR_LOCATION_FILTER = "%v filter for provinces:%v and cities:%v are both set"

Checks the parameters

1. provinces and cities cannot be assigned at the same time(except auto-condition) 2. duplicated value would be eliminated

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.

Types

type NodeFilter

type NodeFilter struct {
	MatchProvinces []string
	MatchCities    []string
	MatchIsps      []string
}

The filter of node

type NodeFilterById

type NodeFilterById struct {
	MatchIds       []int32
	MatchProvinces []int16
	MatchCities    []int16
	MatchIsps      []int16
}

The filter of node

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.

type QueryParams

type QueryParams struct {
	StartTime        time.Time
	EndTime          time.Time
	AgentFilter      NodeFilter
	TargetFilter     NodeFilter
	AgentFilterById  NodeFilterById
	TargetFilterById NodeFilterById
	IspRelation      model.PropRelation
	ProvinceRelation model.PropRelation
	CityRelation     model.PropRelation
}

The parameters for query

func NewQueryParams

func NewQueryParams() *QueryParams

Initialize query parameters with default values

func (*QueryParams) CheckRationalOfParameters

func (p *QueryParams) CheckRationalOfParameters() error

*

• Checks:
• 1. The end time must be after or equals the start time

func (*QueryParams) SetUpParams

func (p *QueryParams) SetUpParams(paramSetters interface{})

Sets-up the parameters