Use new checksums in manifest

Summary: This now makes use of the `tarsum` mod to surface both intrinsic and extrinsic checksums as part of the manifest. I also threw in the file name and the bytes for good measure. This is output in Sandcastle logs and can help identify mismatches. The filename also means we no longer have to rely on piecing together paths on Sandcastle which is nice.

Reviewed By: nikoant

Differential Revision: D24046464

fbshipit-source-id: dc6dc50eb510a067674166b5fdb11af9cf6762b2

packer/src/tarsum.rs

@@ -7,15 +7,13 @@
 
 //! Intrinsic hash for a tarball.
 
+use crate::types;
 use anyhow::Result;
 use std::collections;
 use std::io;
 
-#[derive(Eq, PartialEq, Debug, serde::Serialize)]
-pub struct HashSum(String);
-
 /// Computes the intrinsic SHA256 checksum of a tar archive.
-pub fn tarsum<R: io::Read>(reader: R) -> Result<HashSum> {
+pub fn tarsum<R: io::Read>(reader: R) -> Result<types::HashSum> {
     use sha2::Digest;
 
     let mut archive = tar::Archive::new(reader);
@@ -35,15 +33,15 @@ pub fn tarsum<R: io::Read>(reader: R) -> Result<HashSum> {
         digest.input(file_hash.0);
     }
     let hash = digest.result();
-    Ok(HashSum(data_encoding::HEXLOWER.encode(&hash)))
+    Ok(types::HashSum(data_encoding::HEXLOWER.encode(&hash)))
 }
 
-fn digest_file<R: io::Read>(reader: &mut R) -> io::Result<HashSum> {
+fn digest_file<R: io::Read>(reader: &mut R) -> io::Result<types::HashSum> {
     use sha2::Digest;
     let mut digest = sha2::Sha256::new();
     io::copy(reader, &mut digest)?;
     let hash = digest.result();
-    Ok(HashSum(data_encoding::HEXLOWER.encode(&hash)))
+    Ok(types::HashSum(data_encoding::HEXLOWER.encode(&hash)))
 }
 
 #[cfg(test)]
@@ -64,7 +62,9 @@ mod test {
 
         assert_eq!(
             res,
-            HashSum("6f92565bb50b9469494b3e1ad668f5d809caa3ffb534c3e56dec75f7ea7912df".to_string())
+            types::HashSum(
+                "6f92565bb50b9469494b3e1ad668f5d809caa3ffb534c3e56dec75f7ea7912df".to_string()
+            )
         );
     }