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use std::io::{Error, ErrorKind, Result};
use log::debug;
use crate::message::{self, compress, Compressor};
impl Compressor for message::state_summary_frontier::Message {
fn compress_with_header(&self) -> Result<bytes::Bytes> {
let type_id = message::TYPES
.get("state_summary_frontier")
.ok_or_else(|| Error::new(ErrorKind::InvalidInput, "unknown type name"))?;
let packer = message::default_packer();
packer.pack_bytes(self.chain_id.as_ref())?;
packer.pack_u32(self.request_id)?;
packer.pack_bytes_with_header(self.summary.as_ref())?;
let bytes_uncompressed = packer.bytes_len();
let compressed = compress::pack_gzip(&packer.take_bytes())?;
let bytes_compressed = compressed.len();
let packer = message::default_packer_with_header();
packer.pack_byte(*type_id)?;
packer.pack_bool(true)?;
packer.pack_bytes(compressed.as_ref())?;
if bytes_uncompressed > bytes_compressed {
debug!(
"state_summary_frontier compression saved {} bytes",
bytes_uncompressed - bytes_compressed
);
} else {
debug!(
"state_summary_frontier compression added {} byte(s)",
bytes_compressed - bytes_uncompressed
);
}
Ok(packer.take_bytes())
}
}
#[test]
fn test_message() {
use crate::ids;
use avalanche_utils::cmp;
let msg = message::state_summary_frontier::Message::create(
ids::Id::empty(),
7,
vec![0x01, 0x02, 0x03],
);
let data_with_header = msg.compress_with_header().unwrap();
let expected_data: &[u8] = &[
0x00, 0x00, 0x00, 0x20,
0x18,
0x01,
0x1f, 0x8b, 0x8, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0xff, 0x63, 0x60, 0x20, 0x8, 0xd8, 0x81,
0x98, 0x99, 0x91, 0x89, 0x19, 0x0, 0xc9, 0x54, 0x4, 0x4a, 0x2b, 0x0, 0x0,
0x0,
];
assert!(cmp::eq_vectors(expected_data, &data_with_header));
}