osiris_log: Include the chunk in chunk_written event

We can use this to calculate the CRC32 for remote-tier integrity checks.

Author: the-mikedavis

src/osiris_log.erl

@@ -2503,7 +2503,7 @@ write_chunk(Chunk,
             counters:add(CntRef, ?C_CHUNKS, 1),
             maybe_set_first_offset(Next, Cfg),
             Event = {chunk_written, Next, Timestamp, Epoch,
-                     Cur, Size, NumRecords},
+                     Cur, Size, NumRecords, Chunk},
             Manifest = ManifestMod:handle_event(Event, Manifest0),
             State#?MODULE{manifest = {ManifestMod, Manifest},
                           mode =

src/osiris_log_manifest.erl

@@ -11,7 +11,8 @@
                   NewSegment :: file:filename_all()} |
                  {chunk_written, osiris:offset(), osiris:timestamp(),
                   osiris:epoch(), Pos :: non_neg_integer(),
-                  Size :: non_neg_integer(), NumRecords :: non_neg_integer()}.
+                  Size :: non_neg_integer(), NumRecords :: non_neg_integer(),
+                  Chunk :: iodata()}.
 
 -export_type([state/0, event/0]).