From ea4579674d6e742bfd7f533f2aa62fc2e677f780 Mon Sep 17 00:00:00 2001
From: ThomasV <thomasv@gitorious>
Date: Wed, 21 Nov 2012 23:55:42 +0400
Subject: [PATCH] fix caching problem with chunks

---
 backends/bitcoind/blockchain_processor.py |   15 +++++++++++----
 1 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/backends/bitcoind/blockchain_processor.py b/backends/bitcoind/blockchain_processor.py
index 5e7901a..ef41793 100644
--- a/backends/bitcoind/blockchain_processor.py
+++ b/backends/bitcoind/blockchain_processor.py
@@ -182,6 +182,11 @@ class BlockchainProcessor(Processor):
         if sync or len(self.headers_data) > 40*100:
             self.flush_headers()
 
+        with self.cache_lock:
+            chunk_index = header.get('block_height')/2016
+            if self.chunk_cache.get(chunk_index):
+                self.chunk_cache.pop(chunk_index)
+
     def pop_header(self):
         # we need to do this only if we have not flushed
         if self.headers_data:
@@ -198,10 +203,12 @@ class BlockchainProcessor(Processor):
 
     def get_chunk(self, i):
         # store them on disk; store the current chunk in memory
-        chunk = self.chunk_cache.get(i)
-        if not chunk:
-            chunk = self.read_chunk(i)
-            self.chunk_cache[i] = chunk
+        with self.cache_lock:
+            chunk = self.chunk_cache.get(i)
+            if not chunk:
+                chunk = self.read_chunk(i)
+                self.chunk_cache[i] = chunk
+
         return chunk
 
 
-- 
1.7.1