mirror of
https://github.com/yzernik/squeaknode.git
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057d9495d4
* Move hashing function for squeak requests to util module * Remove sayHello method from protocol
117 lines
4.2 KiB
Python
117 lines
4.2 KiB
Python
import logging
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import sys
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import psycopg2
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from squeak.core import CSqueak
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from squeak.core import CSqueakEncContent
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from squeak.core.script import CScript
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from squeakserver.server.util import get_hash
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logger = logging.getLogger(__name__)
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class PostgresDb():
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def __init__(self, params):
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self.params = params
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def get_connection(self):
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""" Connect to the PostgreSQL database server """
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with psycopg2.connect(**self.params) as conn:
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with conn.cursor() as curs:
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# execute a statement
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print('PostgreSQL database version:')
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curs.execute('SELECT version()')
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# display the PostgreSQL database server version
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db_version = curs.fetchone()
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print(db_version)
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def insert_squeak(self, squeak):
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""" Insert a new squeak. """
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sql = """
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INSERT INTO squeak(hash, nVersion, hashEncContent, hashReplySqk, hashBlock, nBlockHeight, scriptPubKey, hashDataKey, vchIv, nTime, nNonce, encContent, scriptSig, address, vchDataKey, content)
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VALUES(%s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s)
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RETURNING hash;"""
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with psycopg2.connect(**self.params) as conn:
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with conn.cursor() as curs:
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# execute the INSERT statement
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curs.execute(sql, (
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get_hash(squeak).hex(),
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squeak.nVersion,
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squeak.hashEncContent.hex(),
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squeak.hashReplySqk.hex(),
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squeak.hashBlock.hex(),
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squeak.nBlockHeight,
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bytes(squeak.scriptPubKey).hex(),
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squeak.hashDataKey.hex(),
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squeak.vchIv.hex(),
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squeak.nTime,
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squeak.nNonce,
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bytes(squeak.encContent.vchEncContent).hex(),
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bytes(squeak.scriptSig).hex(),
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str(squeak.GetAddress()),
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squeak.vchDataKey.hex(),
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squeak.GetDecryptedContentStr(),
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))
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# get the generated hash back
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row = curs.fetchone()
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return bytes.fromhex(row[0])
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def get_squeak(self, squeak_hash):
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""" Get a squeak. """
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sql = """
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SELECT * FROM squeak WHERE hash=%s"""
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squeak_hash_str = squeak_hash.hex()
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with psycopg2.connect(**self.params) as conn:
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with conn.cursor() as curs:
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curs.execute(sql, (squeak_hash_str,))
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row = curs.fetchone()
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squeak = CSqueak(
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nVersion=row[2],
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hashEncContent=bytes.fromhex(row[3]),
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hashReplySqk=bytes.fromhex(row[4]),
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hashBlock=bytes.fromhex(row[5]),
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nBlockHeight=row[6],
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scriptPubKey=CScript(bytes.fromhex(row[7])),
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hashDataKey=bytes.fromhex(row[8]),
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vchIv=bytes.fromhex((row[9])),
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nTime=row[10],
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nNonce=row[11],
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encContent=CSqueakEncContent(bytes.fromhex((row[12]))),
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scriptSig=CScript(bytes.fromhex((row[13]))),
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vchDataKey=bytes.fromhex((row[15])),
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)
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return squeak
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def lookup_squeaks(self, addresses, min_block=sys.maxsize, max_block=0):
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""" Lookup squeaks. """
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sql = """
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SELECT hash FROM squeak
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WHERE address IN %s
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AND nBlockHeight >= %s
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AND nBlockHeight <= %s"""
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addresses_tuple = tuple(addresses)
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logger.info("Lookup query with addresses tuple: " + str(addresses_tuple))
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if not addresses:
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return []
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with psycopg2.connect(**self.params) as conn:
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with conn.cursor() as curs:
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# mogrify to debug.
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# logger.info(curs.mogrify(sql, (addresses_tuple, min_block, max_block)))
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curs.execute(sql, (addresses_tuple, min_block, max_block))
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rows = curs.fetchall()
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hashes = [
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bytes.fromhex(row[0])
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for row in rows
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]
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return hashes
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