def get_status(self):
try:
state = self.mongo_cli.get_one(table=FLAGS.chain_status,
cond={FLAGS.block_height: 0})
except Exception as e:
raise exception.DBError(e)
return None if state is None else state
def get_tx_by_hash(self, txhash):
try:
tx = self.mongo_cli.get_one(table=FLAGS.transaction_info,
cond={FLAGS.tx_id: txhash})
except Exception, e:
raise exception.DBError(e)
def select_txout_by_hash(self, txhash):
try:
tx = self.mongo_cli.get_one(table=FLAGS.transaction_info,
cond={FLAGS.tx_id: txhash})
txouts = tx.get[FLAGS.transaction_out]
except Exception, e:
raise exception.DBError(e)
def get_latest_block_miner(self):
height = self.get_recent_height()
try:
miner = self.mongo_cli.get_one(table=FLAGS.block_info, cond={FLAGS.block_height: height}, fields={'miner': 1, '_id': 0})
except Exception as e:
raise exception.DBError(e)
return miner.get('miner')
def get_difficulty(self):
try:
height = self.get_recent_height()
difficulty = self.mongo_cli.get_one(FLAGS.block_info, {'height': height}, fields={'difficulty': 1, '_id': 0})
except Exception as e:
raise exception.DBError(e)
return difficulty.get('difficulty')
def request_node_status(self):
try:
stats = self.mongo_cli.get_many(table=FLAGS.node_status,
n=1,
sort_key=FLAGS.timestamp,
ascend=False)
except Exception as e:
raise exception.DBError(e)
return stats
def get_block_latest_in_range(self, start, end):
try:
blocks = self.mongo_cli.get_many(table=FLAGS.block_info,
n=end - start,
sort_key=FLAGS.block_height,
ascend=False,
skip=start)
except Exception as e:
raise exception.DBError(e)
return blocks
def get_transactions_in_range(self, low, high):
try:
coinbase = self.mongo_cli.get_many(
table=FLAGS.block_info,
items={"transactions": 1, "_id": 0},
n=high - low,
skip=low)
except Exception as e:
raise exception.DBError(e)
return coinbase
def get_timestamps_in_range(self, start, end):
try:
timestamps = self.mongo_cli.get_many(
table=FLAGS.block_info,
items={"timestamp": 1, "_id": 0},
n=end-start,
skip=start)
except Exception as e:
raise exception.DBError(e)
return timestamps
def get_hash_rate_in_range(self, start, end):
try:
hash_rates = self.mongo_cli.get_many(
table=FLAGS.block_info,
items={"hash_rate": 1, "_id": 0},
n=end-start,
skip=start)
except Exception as e:
raise exception.DBError(e)
return hash_rates
def get_last_block_interval(self):
height = self.get_recent_height()
if height < 1:
return None
last_height = height - 1
try:
time = self.mongo_cli.get_one(table=FLAGS.block_info, cond={FLAGS.block_height: height}, fields={'timestamp': 1, '_id': 0})
last_time = self.mongo_cli.get_one(table=FLAGS.block_info, cond={FLAGS.block_height: last_height}, fields={'timestamp': 1, '_id': 0})
interval = time.get('timestamp') - last_time.get('timestamp')
except Exception as e:
raise exception.DBError(e)
return interval
def get_block_by_hash(self, blockhash):
try:
if not is_hash_prefix(blockhash):
raise Exception("Block hash is wrong!")
block = self.mongo_cli.get_one(table=FLAGS.block_info,
cond={FLAGS.block_id: blockhash})
if block is None:
raise Exception("Block not found!")
block_info = self._show_block(block)
except Exception as e:
raise exception.DBError(e)
return block_info
def select_txout_by_id(self, txout_id):
try:
txout = self.mongo_cli.get_one(table=FLAGS.transaction_info,
cond={FLAGS.txout_id: txout_id})
except Exception, e:
raise exception.DBError(e)
def save_node(self, status):
try:
self.mongo_cli.insert(flags.FLAGS.node_status, status)
except Exception as e:
raise exception.DBError(e)
def save_chain_patch(self, status_list):
try:
self.mongo_cli.insert_many(flags.FLAGS.chain_status, status_list)
except Exception as e:
raise exception.DBError(e)
def get_node_stats_list(self):
try:
stats = self.mongo_cli.get_many(table=FLAGS.node_status)
except Exception as e:
raise exception.DBError(e)
return None if stats is None else stats
def get_recent_height(self):
try:
state = self.mongo_cli.get(flags.FLAGS.db_status)
except Exception as e:
raise exception.DBError(e)
return None if state is None else state[flags.FLAGS.block_height]
def get_total_addr_num(self):
try:
total_num = self.mongo_cli.count(FLAGS.address_info)
except Exception as e:
raise exception.DBError(e)
return total_num
def get_total_tx_num(self):
try:
total_num = self.mongo_cli.count(FLAGS.transaction_info)
except Exception as e:
raise exception.DBError(e)
return total_num
