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
34 self.raw_output_script = None
38 if self.output_loaded is None:
40 elif (self.input_point is not False and
41 self.input_loaded is None):
47 def __init__(self, chain):
49 self.lock = threading.Lock()
53 def run(self, address, handle_finish):
54 self.address = address
55 self.handle_finish = handle_finish
57 pubkey_hash = bitcoin.address_to_short_hash(address)
58 self.chain.fetch_outputs(pubkey_hash, self.start_loading)
60 def start_loading(self, ec, output_points):
62 for outpoint in output_points:
63 statement_line = StatementLine(outpoint)
64 self.statement.append(statement_line)
65 self.chain.fetch_spend(outpoint,
66 bitcoin.bind(self.load_spend,
67 bitcoin._1, bitcoin._2, statement_line))
68 self.load_tx_info(outpoint, statement_line, False)
70 def load_spend(self, ec, inpoint, statement_line):
71 with statement_line.lock:
73 statement_line.input_point = False
75 statement_line.input_point = inpoint
78 self.load_tx_info(inpoint, statement_line, True)
80 def finish_if_done(self):
82 if any(not line.is_loaded() for line in self.statement):
85 for line in self.statement:
87 line.input_loaded["value"] = -line.output_loaded["value"]
88 result.append(line.input_loaded)
90 line.output_loaded["raw_output_script"] = \
91 line.raw_output_script
92 result.append(line.output_loaded)
93 self.handle_finish(result)
104 def load_tx_info(self, point, statement_line, is_input):
106 info["tx_hash"] = str(point.hash)
107 info["index"] = point.index
108 info["is_input"] = 1 if is_input else 0
109 self.chain.fetch_transaction_index(point.hash,
110 bitcoin.bind(self.tx_index, bitcoin._1, bitcoin._2, bitcoin._3,
111 statement_line, info))
113 def tx_index(self, ec, block_depth, offset, statement_line, info):
114 info["height"] = block_depth
115 self.chain.fetch_block_header_by_depth(block_depth,
116 bitcoin.bind(self.block_header, bitcoin._1, bitcoin._2,
117 statement_line, info))
119 def block_header(self, ec, blk_head, statement_line, info):
120 info["timestamp"] = blk_head.timestamp
121 info["block_hash"] = str(bitcoin.hash_block_header(blk_head))
122 tx_hash = bitcoin.hash_digest(info["tx_hash"])
123 self.chain.fetch_transaction(tx_hash,
124 bitcoin.bind(self.load_tx, bitcoin._1, bitcoin._2,
125 statement_line, info))
127 def load_tx(self, ec, tx, statement_line, info):
129 for tx_out in tx.outputs:
130 script = tx_out.output_script
131 if script.type() == bitcoin.payment_type.pubkey_hash:
132 pkh = bitcoin.short_hash(str(script.operations()[2].data))
133 outputs.append(bitcoin.public_key_hash_to_address(pkh))
135 outputs.append("Unknown")
136 info["outputs"] = outputs
137 info["inputs"] = [None for i in range(len(tx.inputs))]
138 if info["is_input"] == 1:
139 info["inputs"][info["index"]] = self.address
141 our_output = tx.outputs[info["index"]]
142 info["value"] = our_output.value
143 with statement_line.lock:
144 statement_line.raw_output_script = \
145 str(bitcoin.save_script(our_output.output_script))
146 if not [empty_in for empty_in in info["inputs"] if empty_in is None]:
147 # We have the sole input
148 assert(info["is_input"] == 1)
149 with statement_line.lock:
150 statement_line.input_loaded = info
151 self.finish_if_done()
152 for tx_idx, tx_in in enumerate(tx.inputs):
153 if info["is_input"] == 1 and info["index"] == tx_idx:
155 self.chain.fetch_transaction(tx_in.previous_output.hash,
156 bitcoin.bind(self.load_input, bitcoin._1, bitcoin._2,
157 tx_in.previous_output.index, statement_line, info, tx_idx))
159 def load_input(self, ec, tx, index, statement_line, info, inputs_index):
160 script = tx.outputs[index].output_script
161 if script.type() == bitcoin.payment_type.pubkey_hash:
162 pkh = bitcoin.short_hash(str(script.operations()[2].data))
163 info["inputs"][inputs_index] = \
164 bitcoin.public_key_hash_to_address(pkh)
166 info["inputs"][inputs_index] = "Unknown"
167 if not [empty_in for empty_in in info["inputs"] if empty_in is None]:
168 with statement_line.lock:
169 if info["is_input"] == 1:
170 statement_line.input_loaded = info
172 statement_line.output_loaded = info
173 self.finish_if_done()
175 def payment_history(chain, address, handle_finish):
176 ph = PaymentHistory(chain)
178 ph.run(address, handle_finish)
180 if __name__ == "__main__":
186 service = bitcoin.async_service(1)
187 prefix = "/home/genjix/libbitcoin/database"
188 chain = bitcoin.bdb_blockchain(service, prefix)
189 chain.fetch_last_depth(last)
190 address = "1Pbn3DLXfjqF1fFV9YPdvpvyzejZwkHhZE"
191 print "Looking up", address
192 payment_history(chain, address, finish)