From 567008d2a0c95bd972f4031f31647c493d1bc2e8 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Sat, 12 Sep 2020 17:59:09 +0300
Subject: [PATCH] p2p: Add DumpAnchors()

---
 src/addrdb.cpp |  7 +++++++
 src/addrdb.h   | 12 ++++++++++--
 2 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/src/addrdb.cpp b/src/addrdb.cpp
index f3e8a19de2..ca2d66570b 100644
--- a/src/addrdb.cpp
+++ b/src/addrdb.cpp
@@ -10,6 +10,7 @@
 #include <clientversion.h>
 #include <cstdint>
 #include <hash.h>
+#include <logging/timer.h>
 #include <random.h>
 #include <streams.h>
 #include <tinyformat.h>
@@ -156,3 +157,9 @@ bool CAddrDB::Read(CAddrMan& addr, CDataStream& ssPeers)
     }
     return ret;
 }
+
+void DumpAnchors(const fs::path& anchors_db_path, const std::vector<CAddress>& anchors)
+{
+    LOG_TIME_SECONDS(strprintf("Flush %d outbound block-relay-only peer addresses to anchors.dat", anchors.size()));
+    SerializeFileDB("anchors", anchors_db_path, anchors);
+}
diff --git a/src/addrdb.h b/src/addrdb.h
index 8410c3776c..614a0c20e3 100644
--- a/src/addrdb.h
+++ b/src/addrdb.h
@@ -11,9 +11,9 @@
 #include <serialize.h>
 
 #include <string>
-#include <map>
+#include <vector>
 
-class CSubNet;
+class CAddress;
 class CAddrMan;
 class CDataStream;
 
@@ -73,4 +73,12 @@ public:
     bool Read(banmap_t& banSet);
 };
 
+/**
+ * Dump the anchor IP address database (anchors.dat)
+ *
+ * Anchors are last known outgoing block-relay-only peers that are
+ * tried to re-connect to on startup.
+ */
+void DumpAnchors(const fs::path& anchors_db_path, const std::vector<CAddress>& anchors);
+
 #endif // BITCOIN_ADDRDB_H