Allow the long term feerate to be configured, default of 10 sat/vb

The long term feerate is really the highest feerate that the user is
comfortable with making consolidatory transactions. This is should thus
be something that can be configured by the user via a new startup option
-consolidatefeerate. The default value is 10 sat/vbyte, chosen
arbitrarily (it seems like a reasonable number).

1 files changed, 8 insertions, 0 deletions

diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index a1bbf66136..607af3efb0 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -73,6 +73,8 @@ static const CAmount DEFAULT_FALLBACK_FEE = 0;
 static const CAmount DEFAULT_DISCARD_FEE = 10000;
 //! -mintxfee default
 static const CAmount DEFAULT_TRANSACTION_MINFEE = 1000;
+//! -consolidatefeerate default
+static const CAmount DEFAULT_CONSOLIDATE_FEERATE{10000}; // 10 sat/vbyte
 /**
  * maximum fee increase allowed to do partial spend avoidance, even for nodes with this feature disabled by default
  *
@@ -638,6 +640,12 @@ public:
       * output itself, just drop it to fees. */
     CFeeRate m_discard_rate{DEFAULT_DISCARD_FEE};
 
+    /** When the actual feerate is less than the consolidate feerate, we will tend to make transactions which
+     * consolidate inputs. When the actual feerate is greater than the consolidate feerate, we will tend to make
+     * transactions which have the lowest fees.
+     */
+    CFeeRate m_consolidate_feerate{DEFAULT_CONSOLIDATE_FEERATE};
+
     /** The maximum fee amount we're willing to pay to prioritize partial spend avoidance. */
     CAmount m_max_aps_fee{DEFAULT_MAX_AVOIDPARTIALSPEND_FEE}; //!< note: this is absolute fee, not fee rate
     OutputType m_default_address_type{DEFAULT_ADDRESS_TYPE};