Add TimeBoundLoggers to cleanup operations (#7807)

Author: eddyashton

src/host/files_cleanup_timer.h

@@ -6,6 +6,7 @@
 #include "ccf/crypto/sha256_hash.h"
 #include "ledger_filenames.h"
 #include "snapshots/filenames.h"
+#include "time_bound_logger.h"
 #include "timer.h"
 
 #include <algorithm>
@@ -260,6 +261,9 @@ namespace asynchost
         committed_snapshots,
       size_t max_retained)
     {
+      TimeBoundLogger log_if_slow(
+        "Cleaning snapshots", std::chrono::seconds(1));
+
       if (committed_snapshots.size() > max_retained)
       {
         // committed_snapshots is sorted descending by snapshot index, so the
@@ -292,6 +296,15 @@ namespace asynchost
       size_t max_retained,
       std::optional<size_t> snapshot_watermark = std::nullopt)
     {
+      TimeBoundLogger log_if_slow(
+        fmt::format(
+          "Cleaning ledger chunks from {}, watermark={}",
+          main_dir,
+          snapshot_watermark.has_value() ?
+            std::to_string(snapshot_watermark.value()) :
+            "none"),
+        std::chrono::seconds(1));
+
       std::vector<std::pair<size_t, std::filesystem::path>> committed;
       try
       {