def create_block():
"""Add and broadcast the given block.
Returns HTTP 400 if the block is considered invalid."""
try:
# retrieve block from request body
jso = request.get_data(as_text=True)
b = Block.from_json(jso)
# add block to local blockchain
success = app.p2p.bc.discard_block(b)
if success:
# broadcast block to p2p network
app.p2p.broadcast_block(b)
logger.debug(f"block {b.index} added")
return Response(b.to_json(), status=HTTP_CREATED)
else:
logger.debug("failed to add block (discard)")
raise BadRequest()
except BadRequest:
raise
except BaseException as e:
logger.debug(e)
raise BadRequest()
def test_post_transaction(self):
self.prepare_app()
# prepare a valid transaction
w = Wallet()
w.create_keys()
tx = Transaction("0", w.get_address(), 1)
w.sign_transaction(tx)
client = app.test_client()
response = client.post("/block/new", data=tx.to_json())
self.assertEqual(response.status_code, 201)
b = Block.from_json(response.get_data())
mine(b)
response = client.post("/block", data=b.to_json())
self.assertEqual(response.status_code, 201)
tx = Transaction(w.get_address(), 1, 0.5)
# test without signature
response = client.post("/transaction", data=tx.to_json())
self.assertEqual(response.status_code, 400)
# test with signature
w.sign_transaction(tx)
response = client.post("/transaction", data=tx.to_json())
self.assertEqual(response.status_code, 201)
def test_block_serialize(self):
a = Block(0, 1, datetime.datetime.utcnow().timestamp())
t1 = Transaction(0, 1, 2)
a.add_transaction(t1)
t2 = Transaction(0, 1, 2)
a.add_transaction(t2)
b = Block.from_json(a.to_json())
self.assertEqual(a.get_hash(), b.get_hash())
def do_block_raw(self, arg):
"""Send raw block from JSON"""
block_json = input("enter block JSON : ")
try:
blk = Block.from_json(block_json)
except ValueError:
print("Invalid block JSON")
return
if self.api.push_block(blk):
print("OK")
else:
print("KO")
def do_block_raw(args):
"""Send raw block from JSON input"""
block_json = sys.stdin.read()
try:
blk = Block.from_json(block_json)
except ValueError:
print("Invalid block JSON")
return
if args.api.push_block(blk):
print("OK")
else:
print("KO")
def deserialize(self, data):
nb = data[self.NB]
objs = data[self.OBJECTS]
if nb != len(objs):
logger.error("bad number of objects")
raise DeserializationError("bad number of objects")
self.objects = []
for ot in objs:
otype = ot[0]
obj = ot[1]
if otype == MsgInv.TYPE_BLOCK:
obj = Block.from_json(json.dumps(obj))
elif otype == MsgInv.TYPE_TX:
obj = Transaction.from_json(json.dumps(obj))
self.objects.append((otype, obj))
def test_post_new_block(self):
self.prepare_app()
# prepare a valid transaction
w = Wallet()
w.create_keys()
tx = Transaction(0, w.get_address(), 1)
w.sign_transaction(tx)
client = app.test_client()
response = client.post("/block/new", data=tx.to_json())
self.assertEqual(response.status_code, 201)
b = Block.from_json(response.get_data())
self.assertTrue(type(b) == Block)
def test_serialize(self):
a = Block(0, 1, datetime.datetime.utcnow().timestamp())
b = Block.from_json(a.to_json())
self.assertEqual(a.get_hash(), b.get_hash())
def deserialize(self, data):
b = Block.from_json(json.dumps(data))
self.block = b
