5 class ExpiryQueue(threading.Thread):
8 self.lock = threading.Lock()
10 threading.Thread.__init__(self)
17 self.items = [i for i in self.items if not i.stopped()]
22 self.items.append(item)
24 expiry_queue = ExpiryQueue()
28 def __init__(self, output_point):
29 self.lock = threading.Lock()
30 self.output_point = output_point
31 self.output_loaded = None
32 self.input_point = None
33 self.input_loaded = None
37 if self.output_loaded is None:
39 elif (self.input_point is not False and
40 self.input_loaded is None):
46 def __init__(self, chain):
48 self.lock = threading.Lock()
52 def run(self, address, handle_finish):
53 self.address = address
54 self.handle_finish = handle_finish
56 pubkey_hash = bitcoin.address_to_short_hash(address)
57 self.chain.fetch_outputs(pubkey_hash, self.start_loading)
59 def start_loading(self, ec, output_points):
61 for outpoint in output_points:
62 statement_line = StatementLine(outpoint)
63 self.statement.append(statement_line)
64 self.chain.fetch_spend(outpoint,
65 bitcoin.bind(self.load_spend,
66 bitcoin._1, bitcoin._2, statement_line))
67 self.load_tx_info(outpoint, statement_line, False)
69 def load_spend(self, ec, inpoint, statement_line):
70 with statement_line.lock:
72 statement_line.input_point = False
74 statement_line.input_point = inpoint
76 self.load_tx_info(inpoint, statement_line, True)
78 def finish_if_done(self):
80 if any(not line.is_loaded() for line in self.statement):
83 for line in self.statement:
84 line.input_loaded["value"] = -line.output_loaded["value"]
85 result.append(line.input_loaded)
86 result.append(line.output_loaded)
87 self.handle_finish(result)
98 def load_tx_info(self, point, statement_line, is_input):
100 info["tx_hash"] = str(point.hash)
101 info["pos"] = point.index
102 info["is_in"] = 1 if is_input else 0
103 self.chain.fetch_transaction_index(point.hash,
104 bitcoin.bind(self.tx_index, bitcoin._1, bitcoin._2, bitcoin._3,
105 statement_line, info))
107 def tx_index(self, ec, block_depth, offset, statement_line, info):
108 info["height"] = block_depth
109 self.chain.fetch_block_header_by_depth(block_depth,
110 bitcoin.bind(self.block_header, bitcoin._1, bitcoin._2,
111 statement_line, info))
113 def block_header(self, ec, blk_head, statement_line, info):
114 info["time"] = blk_head.timestamp
115 info["blk_hash"] = str(bitcoin.hash_block_header(blk_head))
116 tx_hash = bitcoin.hash_digest(info["tx_hash"])
117 self.chain.fetch_transaction(tx_hash,
118 bitcoin.bind(self.load_tx, bitcoin._1, bitcoin._2,
119 statement_line, info))
121 def load_tx(self, ec, tx, statement_line, info):
123 for tx_out in tx.outputs:
124 script = tx_out.output_script
125 if script.type() == bitcoin.payment_type.pubkey_hash:
126 pkh = bitcoin.short_hash(str(script.operations()[2].data))
127 outputs.append(bitcoin.public_key_hash_to_address(pkh))
129 outputs.append("Unknown")
130 info["outputs"] = outputs
131 info["inputs"] = [None for i in range(len(tx.inputs))]
132 if info["is_in"] == 1:
133 info["inputs"][info["pos"]] = self.address
135 info["value"] = tx.outputs[info["pos"]].value
136 if not [empty_in for empty_in in info["inputs"] if empty_in is None]:
137 # We have the sole input
138 assert(info["is_in"] == 1)
139 with statement_line.lock:
140 statement_line.input_loaded = info
141 self.finish_if_done()
142 for tx_idx, tx_in in enumerate(tx.inputs):
143 if info["is_in"] == 1 and info["pos"] == tx_idx:
145 self.chain.fetch_transaction(tx_in.previous_output.hash,
146 bitcoin.bind(self.load_input, bitcoin._1, bitcoin._2,
147 tx_in.previous_output.index, statement_line, info, tx_idx))
149 def load_input(self, ec, tx, index, statement_line, info, inputs_index):
150 script = tx.outputs[index].output_script
151 if script.type() == bitcoin.payment_type.pubkey_hash:
152 pkh = bitcoin.short_hash(str(script.operations()[2].data))
153 info["inputs"][inputs_index] = \
154 bitcoin.public_key_hash_to_address(pkh)
156 info["inputs"][inputs_index] = "Unknown"
157 if not [empty_in for empty_in in info["inputs"] if empty_in is None]:
158 with statement_line.lock:
159 if info["is_in"] == 1:
160 statement_line.input_loaded = info
162 statement_line.output_loaded = info
163 self.finish_if_done()
165 def payment_history(chain, address, handle_finish):
166 ph = PaymentHistory(chain)
168 ph.run(address, handle_finish)
170 if __name__ == "__main__":
174 service = bitcoin.async_service(1)
175 prefix = "/home/genjix/libbitcoin/database"
176 chain = bitcoin.bdb_blockchain(service, prefix)
177 address = "1LzBzVqEeuQyjD2mRWHes3dgWrT9titxvq"
178 print "Looking up", address
179 payment_history(chain, address, finish)