mempool: move LoadMempool/DumpMempool to node

src/node/mempool_persist.h

@@ -0,0 +1,34 @@
+// Copyright (c) 2022 The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_NODE_MEMPOOL_PERSIST_H
+#define BITCOIN_NODE_MEMPOOL_PERSIST_H
+
+#include <util/fs.h>
+
+class Chainstate;
+class CTxMemPool;
+
+namespace node {
+
+/** Dump the mempool to a file. */
+bool DumpMempool(const CTxMemPool& pool, const fs::path& dump_path,
+                 fsbridge::FopenFn mockable_fopen_function = fsbridge::fopen,
+                 bool skip_file_commit = false);
+
+struct ImportMempoolOptions {
+    fsbridge::FopenFn mockable_fopen_function{fsbridge::fopen};
+    bool use_current_time{false};
+    bool apply_fee_delta_priority{true};
+    bool apply_unbroadcast_set{true};
+};
+/** Import the file and attempt to add its contents to the mempool. */
+bool LoadMempool(CTxMemPool& pool, const fs::path& load_path,
+                 Chainstate& active_chainstate,
+                 ImportMempoolOptions&& opts);
+
+} // namespace node
+
+
+#endif // BITCOIN_NODE_MEMPOOL_PERSIST_H