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|
package rrdformat
import (
//"encoding"
"encoding/xml"
"git.lukeshu.com/go/librrd/rrdformat/rrdbinary"
)
// File format versions:
//
// For the most part, the layout of the file format hasn't
// changed--the version number just indicates which enum members you
// need to support. The only parser-breaking change is that the
// 0002->0003 transition added a few bytes to the timestamp, in order
// to go from second-precision to microsecond-precision.
//
// - "0005" (added in rrdtool 1.5.0, 2015-04-16)
// * added DST_DCOUNTER
// * added DST_DDERIVE
// * otherwise identical to "0004"
//
// - "0004" (added in rrdtool 1.3.0, 2008-06-10)
// * added MHWPREDICT function
// * otherwise identical to "0003"
//
// - "0003" (added in the unreleased rrdtool 1.1.x in 2003,
// present in rrdtool 1.2.0, 2005-04-25)
// * last-updated timestamp gained a `long` microsecond component
// * otherwise identical to "0002"
//
// - "0002" (never used by a stable release of rrdtool, but was used
// by development versions of 1.1.x 2001-2003)
// * added DST_CDEF
// * added CF_HWPREDICT
// * added CF_SEASONAL
// * added CF_DEVPREDICT
// * added CF_DEVSEASONAL
// * added CF_FAILURES
//
// - "0001" (the original in rrdtool 1.0.0, 1999-07-15)
const XMLNS = "https://oss.oetiker.ch/rrdtool/rrdtool-dump.xml"
type RRDValue = rrdbinary.Float
type Header struct {
Cookie rrdbinary.String `rrdbinary:"size=4" xml:"-"`
Version rrdbinary.String `rrdbinary:"size=5" xml:"version"`
FloatCookie rrdbinary.Float `xml:"-"`
DSCnt rrdbinary.Uint `xml:"-"`
RRACnt rrdbinary.Uint `xml:"-"`
PDPStep rrdbinary.Uint `xml:"step"`
Parameters [10]rrdbinary.Unival `xml:"-"`
}
type DSDef struct {
DSName rrdbinary.String `rrdbinary:"size=20"`
DSType rrdbinary.String `rrdbinary:"size=20"`
Parameters [10]rrdbinary.Unival
}
type RRADef struct {
CFName rrdbinary.String `rrdbinary:"size=20"`
RowCnt rrdbinary.Uint
PDPCnt rrdbinary.Uint
}
type Time struct {
Sec rrdbinary.Time
Usec rrdbinary.Int // signed, but always >= 0
}
type PDPPrep struct {
LastDS rrdbinary.String `rrdbinary:"size=30"`
Scratch [10]rrdbinary.Unival
}
type CDPPrep struct {
Scratch [10]rrdbinary.Unival
}
type RRAPtr struct {
CurRow rrdbinary.Uint
}
type RRDv0005 = RRDv0004
type RRDv0004 = RRDv0003
type RRDv0003 struct {
Header Header
DSDefs []DSDef // .Header.DSCnt
RRADefs []RRADef // .Header.RRACnt
LastUpdated Time
PDPPrep []PDPPrep // .Header.DSCnt
CDPPrep []CDPPrep // .Header.DSCnt * .Header.RRACnt
RRAPtr []RRAPtr // .Header.RRACnt
Values []RRDValue // Σ .RRADefs[i].RowCnt*.Header.DsCnt
}
type RRDv0002 = RRDv0001
type RRDv0001 struct {
Header Header
DSDefs []DSDef // .Header.DSCnt
RRADefs []RRADef // .Header.RRACnt
LastUpdated rrdbinary.Time
PDPPrep []PDPPrep // .Header.DSCnt
CDPPrep []CDPPrep // .Header.DSCnt * .Header.RRACnt
RRAPtr []RRAPtr // .Header.RRACnt
Values []RRDValue // Σ .RRADefs[i].RowCnt*.Header.DsCnt
}
func (h *Header) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
if err := e.EncodeElement(h.Version, xml.StartElement{Name: xml.Name{Local: "version", Space: XMLNS}}); err != nil {
return err
}
if err := e.EncodeElement(h.PDPStep, xml.StartElement{Name: xml.Name{Local: "step", Space: XMLNS}}); err != nil {
return err
}
return nil
}
//var _ encoding.BinaryMarshaler = &Header{}
//var _ encoding.BinaryUnmarshaler = &Header{}
var _ xml.Marshaler = &Header{}
//var _ xml.Unmarshaler = &Header{}
|
