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rrd.ksy
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rrd.ksy
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meta:
id: rrd
title: RRD (Round-Robin Database) file
file-extension: rrd
endian: le
license: CC0-1.0
seq:
- id: header
type: header
- id: ds_store
type: ds_def
repeat: expr
repeat-expr: header.ds_count
- id: rra_store
type: rra_def
repeat: expr
repeat-expr: header.rra_count
- id: live_head
type: live_head
- id: pdp_prep_store
type: pdp_prep
repeat: expr
repeat-expr: header.ds_count
- id: cdp_prep_store
type:
switch-on: rra_store[_index].cf
cases:
'"MHWPREDICT"': unknown_cdp_prep
'"HWPREDICT"': unknown_cdp_prep
'"SEASONAL"': unknown_cdp_prep
'"DEVSEASONAL"': unknown_cdp_prep
'"FAILURES"': unknown_cdp_prep
'"DEVPREDICT"': unknown_cdp_prep
_: cdp_prep
repeat: expr
repeat-expr: header.rra_count
- id: rra_ptr_store
type: u8
repeat: expr
repeat-expr: header.rra_count
- id: rra_data_store
type: rra_data(rra_store[_index].row_count)
repeat: expr
repeat-expr: header.rra_count
types:
header:
seq:
- id: magic
contents: ['RRD', 0]
- id: version
type: str
size: 4
encoding: ascii
- id: padding
size: 8
- id: floatcookie
type: f8
- id: ds_count
type: u8
- id: rra_count
type: u8
- id: pdp_step
type: u8
- id: params
doc: "unused"
type: u8
repeat: expr
repeat-expr: 10
ds_def:
seq:
- id: name
type: str
size: 20
encoding: ascii
terminator: 0
- id: datasource
type: str
size: 20
encoding: ascii
terminator: 0
- id: params
type: ds_params
ds_params:
seq:
- id: min_heartbeat_count
type: u8
- id: min_val
type: f8
- id: max_val
type: f8
- id: cdef
doc: "pointer to encoded rpn expression only applies to DST_CDEF, not supported here"
type: u8
- id: unused
type: u8
repeat: expr
repeat-expr: 10 - 4
rra_def:
seq:
- id: cf
type: str
size: 24
encoding: ascii
terminator: 0
- id: row_count
type: u8
- id: pdp_count
type: u8
- id: params
type:
switch-on: cf
cases:
'"MHWPREDICT"': unknown_params
'"HWPREDICT"': unknown_params
'"SEASONAL"': unknown_params
'"DEVSEASONAL"': unknown_params
'"FAILURES"': unknown_params
'"DEVPREDICT"': unknown_params
_: rra_params
rra_params:
seq:
- id: xff
type: f8
- id: unused
type: u8
repeat: expr
repeat-expr: 10 - 1
unknown_params:
seq:
- id: params
type: u8
repeat: expr
repeat-expr: 10
live_head:
seq:
- id: last_update
type: u8
- id: last_update_usec
type: u8
pdp_prep:
seq:
- id: last_ds_reading
type: str
size: 32
encoding: ascii
terminator: 0
- id: params
type: pdp_prep_params
pdp_prep_params:
seq:
- id: unknown_sec_count
type: u8
- id: current_value
type: f8
- id: unused
type: u8
repeat: expr
repeat-expr: 10 - 2
cdp_prep:
seq:
- id: params
type: cdp_prep_params
repeat: expr
repeat-expr: _root.header.ds_count
cdp_prep_params:
seq:
- id: value
type: f8
- id: unknown_pdp_count
type: u8
- id: unused
type: u8
repeat: expr
repeat-expr: 10 - 4
- id: primary_value
type: f8
- id: secondary_value
type: f8
unknown_cdp_prep:
seq:
- id: unused
type: u8
repeat: expr
repeat-expr: 10
rra_data:
params:
- id: row_count
type: u8
seq:
- id: row
type: rra_data_row
repeat: expr
repeat-expr: row_count
rra_data_row:
seq:
- id: values
type: f8
repeat: expr
repeat-expr: _root.header.ds_count