Dynamic erasure (#4653)

Remove erasure-related constants

Remove unneeded `Iterator::collect` call

Document erasure module

Randomize coding blobs used for repair

core/src/window_service.rs

@@ -4,7 +4,7 @@
 use crate::blocktree::Blocktree;
 use crate::cluster_info::ClusterInfo;
 use crate::leader_schedule_cache::LeaderScheduleCache;
-use crate::packet::{Blob, SharedBlob, BLOB_HEADER_SIZE};
+use crate::packet::{Blob, SharedBlob};
 use crate::repair_service::{RepairService, RepairStrategy};
 use crate::result::{Error, Result};
 use crate::service::Service;
@@ -62,19 +62,14 @@ pub fn process_blobs(blobs: &[SharedBlob], blocktree: &Arc<Blocktree>) -> Result
         }
     }))?;
 
-    for blob in blobs {
-        // TODO: Once the original leader signature is added to the blob, make sure that
-        // the blob was originally generated by the expected leader for this slot
-
-        // Insert the new blob into block tree
+    blocktree.put_many_coding_blobs(blobs.iter().filter_map(move |blob| {
         if blob.is_coding() {
-            blocktree.put_coding_blob_bytes(
-                blob.slot(),
-                blob.index(),
-                &blob.data[..BLOB_HEADER_SIZE + blob.size()],
-            )?;
+            Some(&**blob)
+        } else {
+            None
         }
-    }
+    }))?;
+
     Ok(())
 }