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use bytes::{Buf, Bytes};
use tinyvec::ArrayVec;
#[derive(PartialEq, Debug, Clone)]
pub struct Trace {
tag: u32,
auth: u32,
flags: u8,
pub(crate) path_snr: ArrayVec<[f32; 64]>,
invalid: bool,
pub(crate) temp_path: ArrayVec<[u16; 64]>,
}
impl From<Bytes> for Trace {
fn from(value: Bytes) -> Self {
let mut bytes = value;
let mut trace = Trace {
tag: 0,
auth: 0,
flags: 0,
path_snr: ArrayVec::new(),
invalid: true,
temp_path: ArrayVec::new(),
};
if bytes.len() < 10 {
return trace;
}
trace.tag = bytes.get_u32();
trace.auth = bytes.get_u32();
trace.flags = bytes.get_u8();
for byte in bytes.iter() {
trace.temp_path.push(*byte as u16);
}
trace.invalid = false;
trace
}
}
impl core::fmt::Display for Trace {
fn fmt(&self, f: &mut core::fmt::Formatter<'_>) -> core::fmt::Result {
for (snr, hash) in self.path_snr.iter().zip(self.temp_path.clone()) {
f.write_fmt(format_args!("({:2x?}): {}dB ", hash, snr))?;
}
Ok(())
}
}
// Tests for std operations
#[cfg(test)]
mod tests {
use crate::{packet::*, packet_content::PacketContent};
use core::str::FromStr;
use hex::decode;
use tinyvec::array_vec;
use super::*;
#[test]
fn trace() {
let sample = "26032CE0F149EB5B240000000000ACA079";
let lhs_packet = Packet {
route_type: RouteType::Direct,
version: PayloadVersion::VersionOne,
path: array_vec!([u16; 64] => 0xAC, 0xA0, 0x79),
transport: [0, 0],
raw_content: Bytes::copy_from_slice(&decode("49EB5B240000000000ACA079").unwrap()),
content: PacketContent::Trace(Trace {
tag: 0x49EB5B24,
auth: 0x00000000,
flags: 0x00,
path_snr: array_vec!([f32; 64] => 11.0, -8.0, -3.75),
invalid: false,
temp_path: array_vec!([u16; 64] => 0xAC, 0xA0, 0x79),
}),
incomplete: false,
};
let rhs_packet = Packet::from_str(sample).unwrap();
assert_eq!(lhs_packet, rhs_packet);
// We can only check the description in std mode
#[cfg(feature = "std")]
assert_eq!(
format!("{}", rhs_packet),
" Direct | v1 | | [ac, a0, 79] | | TRACE | (ac): 11dB (a0): -8dB (79): -3.75dB "
)
}
}
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