Fix more .unwrap()'s

src/block/metrics.rs

@@ -28,7 +28,9 @@ impl BlockManagerMetrics {
 		Self {
 			_resync_queue_len: meter
 				.u64_value_observer("block.resync_queue_length", move |observer| {
-					observer.observe(resync_queue.len().unwrap() as u64, &[]) // TODO fix unwrap
+					if let Ok(v) = resync_queue.len() {
+						observer.observe(v as u64, &[]);
+					}
 				})
 				.with_description(
 					"Number of block hashes queued for local check and possible resync",
@@ -36,7 +38,9 @@ impl BlockManagerMetrics {
 				.init(),
 			_resync_errored_blocks: meter
 				.u64_value_observer("block.resync_errored_blocks", move |observer| {
-					observer.observe(resync_errors.len().unwrap() as u64, &[]) // TODO fix unwrap
+					if let Ok(v) = resync_errors.len() {
+						observer.observe(v as u64, &[]);
+					}
 				})
 				.with_description("Number of block hashes whose last resync resulted in an error")
 				.init(),

src/table/metrics.rs

@@ -26,10 +26,12 @@ impl TableMetrics {
 				.u64_value_observer(
 					"table.merkle_updater_todo_queue_length",
 					move |observer| {
-						observer.observe(
-							merkle_todo.len().unwrap() as u64, // TODO fix unwrap
-							&[KeyValue::new("table_name", table_name)],
-						)
+						if let Ok(v) = merkle_todo.len() {
+							observer.observe(
+								v as u64,
+								&[KeyValue::new("table_name", table_name)],
+							);
+						}
 					},
 				)
 				.with_description("Merkle tree updater TODO queue length")
@@ -38,10 +40,12 @@ impl TableMetrics {
 				.u64_value_observer(
 					"table.gc_todo_queue_length",
 					move |observer| {
-						observer.observe(
-							gc_todo.len().unwrap() as u64, // TODO fix unwrap
-							&[KeyValue::new("table_name", table_name)],
-						)
+						if let Ok(v) = gc_todo.len() {
+							observer.observe(
+								v as u64,
+								&[KeyValue::new("table_name", table_name)],
+							);
+						}
 					},
 				)
 				.with_description("Table garbage collector TODO queue length")

src/table/sync.rs

@@ -603,9 +603,16 @@ impl SyncTodo {
 			let retain = nodes.contains(&my_id);
 			if !retain {
 				// Check if we have some data to send, otherwise skip
-				if data.store.range(begin..end).unwrap().next().is_none() {
-					// TODO fix unwrap
-					continue;
+				match data.store.range(begin..end) {
+					Ok(mut iter) => {
+						if iter.next().is_none() {
+							continue;
+						}
+					}
+					Err(e) => {
+						warn!("DB error in add_full_sync: {}", e);
+						continue;
+					}
 				}
 			}