remove unused sync-config fields

src/chain_sync/chain_follower.rs

@@ -141,8 +141,10 @@ pub async fn chain_follower<DB: Blockstore + Sync + Send + 'static>(
         let network = network.clone();
         async move {
             while let Ok(event) = network_rx.recv_async().await {
+                // FIXME: Event metrics are not related to the chain follower. Should be moved elsewhere.
                 inc_gossipsub_event_metrics(&event);
 
+                // FIXME: Keeping peer information up to date is not related to the chain follower. Should be moved elsewhere.
                 upd_peer_information(
                     &event,
                     network.clone(),

src/chain_sync/chain_muxer.rs

@@ -3,34 +3,21 @@
 
 use serde::{Deserialize, Serialize};
 
-// Sync the messages for one or many tipsets @ a time
-// Lotus uses a window size of 8: https://github.com/filecoin-project/lotus/blob/c1d22d8b3298fdce573107413729be608e72187d/chain/sync.go#L56
-const DEFAULT_REQUEST_WINDOW: usize = 8;
-const DEFAULT_TIPSET_SAMPLE_SIZE: usize = 1;
 const DEFAULT_RECENT_STATE_ROOTS: i64 = 2000;
 
 /// Structure that defines syncing configuration options
 #[derive(Debug, Deserialize, Serialize, Clone, PartialEq, Eq)]
 #[cfg_attr(test, derive(derive_quickcheck_arbitrary::Arbitrary))]
 pub struct SyncConfig {
-    /// Request window length for tipsets during chain exchange
-    #[cfg_attr(test, arbitrary(gen(|g| u32::arbitrary(g) as _)))]
-    pub request_window: usize,
     /// Number of recent state roots to keep in the database after `sync`
     /// and to include in the exported snapshot.
     pub recent_state_roots: i64,
-    /// Sample size of tipsets to acquire before determining what the network
-    /// head is
-    #[cfg_attr(test, arbitrary(gen(|g| u32::arbitrary(g) as _)))]
-    pub tipset_sample_size: usize,
 }
 
 impl Default for SyncConfig {
     fn default() -> Self {
         Self {
-            request_window: DEFAULT_REQUEST_WINDOW,
             recent_state_roots: DEFAULT_RECENT_STATE_ROOTS,
-            tipset_sample_size: DEFAULT_TIPSET_SAMPLE_SIZE,
         }
     }
 }

src/cli_shared/cli/mod.rs

@@ -217,13 +217,6 @@ impl CliOpts {
         }
         // (where to find these flags, should be easy to do with structops)
 
-        // check and set syncing configurations
-        if let Some(req_window) = self.req_window {
-            cfg.sync.request_window = req_window;
-        }
-        if let Some(tipset_sample_size) = self.tipset_sample_size {
-            cfg.sync.tipset_sample_size = tipset_sample_size.into();
-        }
         if let Some(encrypt_keystore) = self.encrypt_keystore {
             cfg.client.encrypt_keystore = encrypt_keystore;
         }