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[qa] Fix race condition in sendheaders.py

Also de-duplicates code that has been moved to mininode
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sdaftuar committed Oct 6, 2016
1 parent 6976db2 commit b55d9411e7e1aa36ddabba3b942f2e1c736c1bd9
Showing with 26 additions and 42 deletions.
  1. +26 −42 qa/rpc-tests/sendheaders.py
@@ -80,30 +80,26 @@
Expect: disconnect.
'''
class BaseNode(NodeConnCB):
direct_fetch_response_time = 0.05
class BaseNode(SingleNodeConnCB):
def __init__(self):
NodeConnCB.__init__(self)
self.connection = None
SingleNodeConnCB.__init__(self)
self.last_inv = None
self.last_headers = None
self.last_block = None
self.ping_counter = 1
self.last_pong = msg_pong(0)
self.last_getdata = None
self.sleep_time = 0.05
self.block_announced = False
self.last_getheaders = None
self.disconnected = False
self.last_blockhash_announced = None
def clear_last_announcement(self):
with mininode_lock:
self.block_announced = False
self.last_inv = None
self.last_headers = None
def add_connection(self, conn):
self.connection = conn
# Request data for a list of block hashes
def get_data(self, block_hashes):
msg = msg_getdata()
@@ -122,17 +118,17 @@ def send_block_inv(self, blockhash):
msg.inv = [CInv(2, blockhash)]
self.connection.send_message(msg)
# Wrapper for the NodeConn's send_message function
def send_message(self, message):
self.connection.send_message(message)
def on_inv(self, conn, message):
self.last_inv = message
self.block_announced = True
self.last_blockhash_announced = message.inv[-1].hash
def on_headers(self, conn, message):
self.last_headers = message
self.block_announced = True
if len(message.headers):
self.block_announced = True
message.headers[-1].calc_sha256()
self.last_blockhash_announced = message.headers[-1].sha256
def on_block(self, conn, message):
self.last_block = message.block
@@ -141,9 +137,6 @@ def on_block(self, conn, message):
def on_getdata(self, conn, message):
self.last_getdata = message
def on_pong(self, conn, message):
self.last_pong = message
def on_getheaders(self, conn, message):
self.last_getheaders = message
@@ -157,7 +150,7 @@ def check_last_announcement(self, headers=None, inv=None):
expect_headers = headers if headers != None else []
expect_inv = inv if inv != None else []
test_function = lambda: self.block_announced
self.sync(test_function)
assert(wait_until(test_function, timeout=60))
with mininode_lock:
self.block_announced = False
@@ -180,43 +173,32 @@ def check_last_announcement(self, headers=None, inv=None):
return success
# Syncing helpers
def sync(self, test_function, timeout=60):
while timeout > 0:
with mininode_lock:
if test_function():
return
time.sleep(self.sleep_time)
timeout -= self.sleep_time
raise AssertionError("Sync failed to complete")
def sync_with_ping(self, timeout=60):
self.send_message(msg_ping(nonce=self.ping_counter))
test_function = lambda: self.last_pong.nonce == self.ping_counter
self.sync(test_function, timeout)
self.ping_counter += 1
return
def wait_for_block(self, blockhash, timeout=60):
test_function = lambda: self.last_block != None and self.last_block.sha256 == blockhash
self.sync(test_function, timeout)
assert(wait_until(test_function, timeout=timeout))
return
def wait_for_getheaders(self, timeout=60):
test_function = lambda: self.last_getheaders != None
self.sync(test_function, timeout)
assert(wait_until(test_function, timeout=timeout))
return
def wait_for_getdata(self, hash_list, timeout=60):
if hash_list == []:
return
test_function = lambda: self.last_getdata != None and [x.hash for x in self.last_getdata.inv] == hash_list
self.sync(test_function, timeout)
assert(wait_until(test_function, timeout=timeout))
return
def wait_for_disconnect(self, timeout=60):
test_function = lambda: self.disconnected
self.sync(test_function, timeout)
assert(wait_until(test_function, timeout=timeout))
return
def wait_for_block_announcement(self, block_hash, timeout=60):
test_function = lambda: self.last_blockhash_announced == block_hash
assert(wait_until(test_function, timeout=timeout))
return
def send_header_for_blocks(self, new_blocks):
@@ -266,7 +248,9 @@ def mine_blocks(self, count):
def mine_reorg(self, length):
self.nodes[0].generate(length) # make sure all invalidated blocks are node0's
sync_blocks(self.nodes, wait=0.1)
[x.clear_last_announcement() for x in self.p2p_connections]
for x in self.p2p_connections:
x.wait_for_block_announcement(int(self.nodes[0].getbestblockhash(), 16))
x.clear_last_announcement()
tip_height = self.nodes[1].getblockcount()
hash_to_invalidate = self.nodes[1].getblockhash(tip_height-(length-1))
@@ -495,7 +479,7 @@ def run_test(self):
test_node.send_header_for_blocks(blocks)
test_node.sync_with_ping()
test_node.wait_for_getdata([x.sha256 for x in blocks], timeout=test_node.sleep_time)
test_node.wait_for_getdata([x.sha256 for x in blocks], timeout=direct_fetch_response_time)
[ test_node.send_message(msg_block(x)) for x in blocks ]
@@ -526,13 +510,13 @@ def run_test(self):
# both blocks (same work as tip)
test_node.send_header_for_blocks(blocks[1:2])
test_node.sync_with_ping()
test_node.wait_for_getdata([x.sha256 for x in blocks[0:2]], timeout=test_node.sleep_time)
test_node.wait_for_getdata([x.sha256 for x in blocks[0:2]], timeout=direct_fetch_response_time)
# Announcing 16 more headers should trigger direct fetch for 14 more
# blocks
test_node.send_header_for_blocks(blocks[2:18])
test_node.sync_with_ping()
test_node.wait_for_getdata([x.sha256 for x in blocks[2:16]], timeout=test_node.sleep_time)
test_node.wait_for_getdata([x.sha256 for x in blocks[2:16]], timeout=direct_fetch_response_time)
# Announcing 1 more header should not trigger any response
test_node.last_getdata = None

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