From 20f0f635f80d6f8fa459c31e0f85f26e2abd964b Mon Sep 17 00:00:00 2001
From: Ouziel Slama <ouziel@gmail.com>
Date: Mon, 18 Mar 2024 12:39:33 +0100
Subject: [PATCH] On minor version change, reparse from a given block if
 required

---
 counterparty-lib/counterpartylib/lib/check.py  | 15 ++++++++++++---
 counterparty-lib/counterpartylib/lib/config.py |  6 ++++++
 2 files changed, 18 insertions(+), 3 deletions(-)

diff --git a/counterparty-lib/counterpartylib/lib/check.py b/counterparty-lib/counterpartylib/lib/check.py
index af4a39c5e6..6880c9fdd2 100644
--- a/counterparty-lib/counterpartylib/lib/check.py
+++ b/counterparty-lib/counterpartylib/lib/check.py
@@ -364,7 +364,16 @@ def database_version(db):
         )
     elif version_minor != config.VERSION_MINOR:
         # Reparse transactions from the vesion block if minor version has changed.
+        message = f'Client minor version number mismatch ({version_minor} ≠ {config.VERSION_MINOR}).'
+        if config.NEED_REPARSE_IF_MINOR_IS_LESS_THAN is not None:
+            min_version_minor, min_version_block_index = config.NEED_REPARSE_IF_MINOR_IS_LESS_THAN
+            if version_minor < min_version_minor:
+                raise DatabaseVersionError(
+                    message=message,
+                    required_action='reparse',
+                    from_block_index=min_version_block_index
+                )
         raise DatabaseVersionError(
-            message=f'Client minor version number mismatch ({version_minor} ≠ {config.VERSION_MINOR}).',
-            required_action='reparse',
-            from_block_index=config.BLOCK_FIRST)
+            message=message,
+            required_action=None
+        )
diff --git a/counterparty-lib/counterpartylib/lib/config.py b/counterparty-lib/counterpartylib/lib/config.py
index 6201f29ef1..3285d89e9c 100644
--- a/counterparty-lib/counterpartylib/lib/config.py
+++ b/counterparty-lib/counterpartylib/lib/config.py
@@ -17,6 +17,12 @@
 
 ADDRINDEXRS_VERSION = "0.4.3"
 
+# When updating to a new verion, we are making a rollback if major version changes.
+# If minor version changes and if needed, we are making a reparse from a given block.
+# Fo example:
+# NEED_REPARSE_IF_MINOR_IS_LESS_THAN = (1, 800000)
+# means that we need to reparse from block 800000 if database minor version is less than 1
+NEED_REPARSE_IF_MINOR_IS_LESS_THAN = None
 
 # Counterparty protocol
 TXTYPE_FORMAT = '>I'