change crate used for cdc

previous one seemed to output incorrect results

src/api/Cargo.toml

@@ -22,7 +22,7 @@ bytes = "1.0"
 chrono = "0.4"
 crypto-mac = "0.10"
 err-derive = "0.3"
-hash-roll = "0.3.0"
+fastcdc = "1.0.5"
 hex = "0.4"
 hmac = "0.10"
 log = "0.4"

src/api/s3_put.rs

@@ -2,8 +2,8 @@ use std::collections::{BTreeMap, VecDeque};
 use std::fmt::Write;
 use std::sync::Arc;
 
+use fastcdc::{Chunk, FastCDC};
 use futures::stream::*;
-use hash_roll::{ChunkIncr, fastcdc::{FastCdc, FastCdcIncr}, gear_table::GEAR_64};
 use hyper::{Body, Request, Response};
 use md5::{digest::generic_array::*, Digest as Md5Digest, Md5};
 use sha2::Sha256;
@@ -269,22 +269,24 @@ async fn put_block_meta(
 struct BodyChunker {
 	body: Body,
 	read_all: bool,
+	min_block_size: usize,
+	avg_block_size: usize,
 	max_block_size: usize,
 	buf: VecDeque<u8>,
-	chunker: FastCdcIncr<'static>,
 }
 
 impl BodyChunker {
 	fn new(body: Body, block_size: usize) -> Self {
+		let min_block_size = block_size / 4 * 3;
+		let avg_block_size = block_size;
 		let max_block_size = block_size * 2;
-		let chunker = FastCdc::new(&GEAR_64, block_size as u64 / 2, block_size as u64, max_block_size as u64);
-		let chunker = (&chunker).into();
 		Self {
 			body,
 			read_all: false,
+			min_block_size,
+			avg_block_size,
 			max_block_size,
 			buf: VecDeque::with_capacity(2 * max_block_size),
-			chunker,
 		}
 	}
 	async fn next(&mut self) -> Result<Option<Vec<u8>>, GarageError> {
@@ -299,12 +301,14 @@ impl BodyChunker {
 		}
 		if self.buf.len() == 0 {
 			Ok(None)
-		} else if let Some(index) = self.chunker.push(self.buf.make_contiguous()) {
-			let block = self.buf.drain(..index).collect::<Vec<u8>>();
-			Ok(Some(block))
 		} else {
-			let block = self.buf.drain(..).collect::<Vec<u8>>();
-			Ok(Some(block))
+			let mut iter = FastCDC::with_eof(self.buf.make_contiguous(), self.min_block_size, self.avg_block_size, self.max_block_size, self.read_all);
+			if let Some(Chunk {length, ..}) = iter.next() {
+				let block = self.buf.drain(..length).collect::<Vec<u8>>();
+				Ok(Some(block))
+			} else {
+				Ok(None)
+			}
 		}
 	}
 }