Add a method to CWallet to write just CKeyMetadata

Author: achow101

src/wallet/wallet.cpp

@@ -349,6 +349,12 @@ void CWallet::LoadScriptMetadata(const CScriptID& script_id, const CKeyMetadata
     m_script_metadata[script_id] = meta;
 }
 
+// Writes a keymetadata for a public key. overwrite specifies whether to overwrite an existing metadata for that key if there exists one.
+bool CWallet::WriteKeyMetadata(const CKeyMetadata& meta, const CPubKey& pubkey, const bool overwrite)
+{
+    return WalletBatch(*database).WriteKeyMetadata(meta, pubkey, overwrite);
+}
+
 bool CWallet::LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret)
 {
     return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret);

src/wallet/wallet.h

@@ -776,6 +776,8 @@ class CWallet final : public CCryptoKeyStore, public CValidationInterface
     // Map from Script ID to key metadata (for watch-only keys).
     std::map<CScriptID, CKeyMetadata> m_script_metadata GUARDED_BY(cs_wallet);
 
+    bool WriteKeyMetadata(const CKeyMetadata& meta, const CPubKey& pubkey, bool overwrite);
+
     typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
     MasterKeyMap mapMasterKeys;
     unsigned int nMasterKeyMaxID = 0;