Simplify composite index construction somewhat

[rapid-gossip-sync-server] / src / hex_utils.rs

diff --git a/src/hex_utils.rs b/src/hex_utils.rs
index cab5a1551299ccdb251f372364cc12663945e551..9d59aa91cece52a6a50c9d514fead7e6f1858685 100644 (file)
--- a/src/hex_utils.rs
+++ b/src/hex_utils.rs
@@ -21,13 +21,14 @@ pub fn to_vec(hex: &str) -> Option<Vec<u8>> {
     Some(out)
 }
 
-#[inline]
-pub fn hex_str(value: &[u8]) -> String {
-    let mut res = String::with_capacity(64);
-    for v in value {
-        res += &format!("{:02x}", v);
-    }
-    res
+pub fn to_composite_index(scid: i64, timestamp: i64, direction: bool) -> String {
+       let scid_be = scid.to_be_bytes();
+       let res = format!("{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}:{}:{}",
+               scid_be[0], scid_be[1], scid_be[2], scid_be[3],
+               scid_be[4], scid_be[5], scid_be[6], scid_be[7],
+               timestamp, direction as u8);
+       assert_eq!(res.len(), 29); // Our SQL Type requires len of 29
+       res
 }
 
 pub fn to_compressed_pubkey(hex: &str) -> Option<PublicKey> {