From b3d7493f5e8b20378ec2e41a10459e4339d538e9 Mon Sep 17 00:00:00 2001
From: Luke Shumaker <lukeshu@lukeshu.com>
Date: Sat, 1 Feb 2020 18:08:43 -0500
Subject: wip

---
 rrdformat/format.go | 55 ++++++++++++++++++++++++++++-------------------------
 1 file changed, 29 insertions(+), 26 deletions(-)

(limited to 'rrdformat/format.go')

diff --git a/rrdformat/format.go b/rrdformat/format.go
index d004e86..bb37761 100644
--- a/rrdformat/format.go
+++ b/rrdformat/format.go
@@ -38,6 +38,13 @@ import (
 //    * added CF_FAILURES
 //
 //  - "0001" (the original in rrdtool 1.0.0, 1999-07-15)
+const (
+	RRD_VERSION1 = "0001"
+	RRD_VERSION2 = "0002"
+	RRD_VERSION3 = "0003"
+	RRD_VERSION4 = "0004"
+	RRD_VERSION5 = "0005"
+)
 
 type Value = rrdbinary.Double
 
@@ -51,6 +58,17 @@ type Header struct {
 	Parameters  [10]rrdbinary.Unival `xml:"-"`
 }
 
+// Data Source Types
+const (
+	DST_COUNTER  = "COUNTER"  // version >= RRD_VERSION1
+	DST_ABSOLUTE = "ABSOLUTE" // version >= RRD_VERSION1
+	DST_GAUGE    = "GAUGE"    // version >= RRD_VERSION1
+	DST_DERIVE   = "DERIVE"   // version >= RRD_VERSION1
+	DST_CDEF     = "CDEF"     // version >= RRD_VERSION2
+	DST_DCOUNTER = "DCOUNTER" // version >= RRD_VERSION5
+	DST_DDERIV   = "DDERIV"   // version >= RRD_VERSION5
+)
+
 type DSDef struct {
 	DSName     rrdbinary.String     `rrdbinary:"size=20" xml:"name"`
 	DSType     rrdbinary.String     `rrdbinary:"size=20" xml:"type"`
@@ -68,7 +86,7 @@ type RRADef struct {
 
 type TimeWithUsec struct {
 	Sec  rrdbinary.Time
-	Usec rrdbinary.Long // signed, but always >= 0
+	Usec rrdbinary.Long // signed, but always >= 0 (version >= RRD_VERSION3)
 }
 
 func (ts TimeWithUsec) Time() time.Time {
@@ -96,29 +114,14 @@ type RRAPtr struct {
 	CurRow rrdbinary.ULong
 }
 
-type RRDv0005 = RRDv0004
-type RRDv0004 = RRDv0003
-
-type RRDv0003 struct {
-	Header      Header
-	DSDefs      []DSDef  // .Header.DSCnt
-	RRADefs     []RRADef // .Header.RRACnt
-	LastUpdated TimeWithUsec
-	PDPPreps    []PDPPrep // .Header.DSCnt
-	CDPPreps    []CDPPrep // .Header.DSCnt * .Header.RRACnt
-	RRAPtrs     []RRAPtr  // .Header.RRACnt
-	Values      []Value   // Σ .RRADefs[i].RowCnt*.Header.DSCnt
-}
-
-type RRDv0002 = RRDv0001
-
-type RRDv0001 struct {
-	Header      Header
-	DSDefs      []DSDef  // .Header.DSCnt
-	RRADefs     []RRADef // .Header.RRACnt
-	LastUpdated TimeWithoutUsec
-	PDPPreps    []PDPPrep // .Header.DSCnt
-	CDPPreps    []CDPPrep // .Header.DSCnt * .Header.RRACnt
-	RRAPtrs     []RRAPtr  // .Header.RRACnt
-	Values      []Value   // Σ .RRADefs[i].RowCnt*.Header.DSCnt
+type RRD struct {
+	Architecture rrdbinary.Architecture `rrdbinary:"-" xml:"-"`
+	Header       Header
+	DSDefs       []DSDef  // .Header.DSCnt
+	RRADefs      []RRADef // .Header.RRACnt
+	LastUpdated  TimeWithUsec
+	PDPPreps     []PDPPrep // .Header.DSCnt
+	CDPPreps     []CDPPrep // .Header.DSCnt * .Header.RRACnt
+	RRAPtrs      []RRAPtr  // .Header.RRACnt
+	Values       []Value   // Σ .RRADefs[i].RowCnt*.Header.DSCnt
 }
-- 
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