1 files changed, 65 insertions, 0 deletions
diff --git a/src/rocksdb/db_stress_tool/db_stress_table_properties_collector.h b/src/rocksdb/db_stress_tool/db_stress_table_properties_collector.h
new file mode 100644
index 000000000..d1758cbb4
--- /dev/null
+++ b/src/rocksdb/db_stress_tool/db_stress_table_properties_collector.h
@@ -0,0 +1,65 @@
+//  Copyright (c) 2011-present, Facebook, Inc.  All rights reserved.
+//  This source code is licensed under both the GPLv2 (found in the
+//  COPYING file in the root directory) and Apache 2.0 License
+//  (found in the LICENSE.Apache file in the root directory).
+
+#pragma once
+
+#include "rocksdb/table.h"
+#include "util/gflags_compat.h"
+#include "util/random.h"
+
+DECLARE_int32(mark_for_compaction_one_file_in);
+
+namespace ROCKSDB_NAMESPACE {
+
+// A `DbStressTablePropertiesCollector` ignores what keys/values were added to
+// the table, adds no properties to the table, and decides at random whether the
+// table will be marked for compaction according to
+// `FLAGS_mark_for_compaction_one_file_in`.
+class DbStressTablePropertiesCollector : public TablePropertiesCollector {
+ public:
+  DbStressTablePropertiesCollector()
+      : need_compact_(Random::GetTLSInstance()->OneInOpt(
+            FLAGS_mark_for_compaction_one_file_in)) {}
+
+  virtual Status AddUserKey(const Slice& /* key */, const Slice& /* value */,
+                            EntryType /*type*/, SequenceNumber /*seq*/,
+                            uint64_t /*file_size*/) override {
+    return Status::OK();
+  }
+
+  virtual Status Finish(UserCollectedProperties* /* properties */) override {
+    return Status::OK();
+  }
+
+  virtual UserCollectedProperties GetReadableProperties() const override {
+    return UserCollectedProperties{};
+  }
+
+  virtual const char* Name() const override {
+    return "DbStressTablePropertiesCollector";
+  }
+
+  virtual bool NeedCompact() const override { return need_compact_; }
+
+ private:
+  const bool need_compact_;
+};
+
+// A `DbStressTablePropertiesCollectorFactory` creates
+// `DbStressTablePropertiesCollectorFactory`s.
+class DbStressTablePropertiesCollectorFactory
+    : public TablePropertiesCollectorFactory {
+ public:
+  virtual TablePropertiesCollector* CreateTablePropertiesCollector(
+      TablePropertiesCollectorFactory::Context /* context */) override {
+    return new DbStressTablePropertiesCollector();
+  }
+
+  virtual const char* Name() const override {
+    return "DbStressTablePropertiesCollectorFactory";
+  }
+};
+
+}  // namespace ROCKSDB_NAMESPACE