237 lines
9.6 KiB
Python
237 lines
9.6 KiB
Python
import os.path
|
|
import asyncio
|
|
import sqlite3
|
|
from typing import List, Optional
|
|
from concurrent.futures import ThreadPoolExecutor
|
|
from lbry.schema.url import normalize_name
|
|
|
|
from .bcd_data_stream import BCDataStream
|
|
|
|
|
|
FILES = [
|
|
'block_index',
|
|
'claims'
|
|
]
|
|
|
|
|
|
class FindShortestID:
|
|
__slots__ = 'short_id', 'new_id'
|
|
|
|
def __init__(self):
|
|
self.short_id = ''
|
|
self.new_id = None
|
|
|
|
def step(self, other_id, new_id):
|
|
other_id = other_id[::-1].hex()
|
|
if self.new_id is None:
|
|
self.new_id = new_id[::-1].hex()
|
|
for i in range(len(self.new_id)):
|
|
if other_id[i] != self.new_id[i]:
|
|
if i > len(self.short_id)-1:
|
|
self.short_id = self.new_id[:i+1]
|
|
break
|
|
|
|
def finalize(self):
|
|
return self.short_id
|
|
|
|
|
|
class BlockchainDB:
|
|
|
|
def __init__(self, directory: str):
|
|
self.directory = directory
|
|
self.connection: Optional[sqlite3.Connection] = None
|
|
self.executor: Optional[ThreadPoolExecutor] = None
|
|
|
|
async def run_in_executor(self, *args):
|
|
return await asyncio.get_event_loop().run_in_executor(self.executor, *args)
|
|
|
|
def sync_open(self):
|
|
self.connection = sqlite3.connect(
|
|
os.path.join(self.directory, FILES[0]+'.sqlite'),
|
|
timeout=60.0 * 5
|
|
)
|
|
for file in FILES[1:]:
|
|
self.connection.execute(
|
|
f"ATTACH DATABASE '{os.path.join(self.directory, file+'.sqlite')}' AS {file}"
|
|
)
|
|
self.connection.create_aggregate("find_shortest_id", 2, FindShortestID)
|
|
#self.connection.execute(
|
|
# "CREATE INDEX IF NOT EXISTS claim_originalheight_claimid ON claim (originalheight, claimid);"
|
|
#)
|
|
self.connection.row_factory = sqlite3.Row
|
|
|
|
async def open(self):
|
|
assert self.executor is None, "Database is already open."
|
|
self.executor = ThreadPoolExecutor(max_workers=1)
|
|
return await self.run_in_executor(self.sync_open)
|
|
|
|
def sync_close(self):
|
|
self.connection.close()
|
|
self.connection = None
|
|
|
|
async def close(self):
|
|
if self.executor is not None:
|
|
if self.connection is not None:
|
|
await self.run_in_executor(self.sync_close)
|
|
self.executor.shutdown()
|
|
self.executor = None
|
|
|
|
async def commit(self):
|
|
await self.run_in_executor(self.connection.commit)
|
|
|
|
def sync_execute(self, sql: str, *args):
|
|
return self.connection.execute(sql, *args)
|
|
|
|
async def execute(self, sql: str, *args):
|
|
return await self.run_in_executor(self.sync_execute, sql, *args)
|
|
|
|
def sync_execute_fetchall(self, sql: str, *args) -> List[dict]:
|
|
return [dict(r) for r in self.connection.execute(sql, *args).fetchall()]
|
|
|
|
async def execute_fetchall(self, sql: str, *args) -> List[dict]:
|
|
return await self.run_in_executor(self.sync_execute_fetchall, sql, *args)
|
|
|
|
def sync_get_best_height(self) -> int:
|
|
sql = "SELECT MAX(height) FROM block_info"
|
|
return self.connection.execute(sql).fetchone()[0]
|
|
|
|
async def get_best_height(self) -> int:
|
|
return await self.run_in_executor(self.sync_get_best_height)
|
|
|
|
def sync_get_block_files(self, file_number: int = None, start_height: int = None) -> List[dict]:
|
|
sql = """
|
|
SELECT
|
|
file as file_number,
|
|
COUNT(hash) as blocks,
|
|
SUM(txcount) as txs,
|
|
MAX(height) as best_height
|
|
FROM block_info
|
|
WHERE status&1 AND status&4
|
|
"""
|
|
args = ()
|
|
if file_number is not None and start_height is not None:
|
|
sql += "AND file = ? AND height >= ?"
|
|
args = (file_number, start_height)
|
|
return self.sync_execute_fetchall(sql + " GROUP BY file ORDER BY file ASC;", args)
|
|
|
|
async def get_block_files(self, file_number: int = None, start_height: int = None) -> List[dict]:
|
|
return await self.run_in_executor(
|
|
self.sync_get_block_files, file_number, start_height
|
|
)
|
|
|
|
def sync_get_blocks_in_file(self, block_file: int, start_height=0) -> List[dict]:
|
|
return self.sync_execute_fetchall(
|
|
"""
|
|
SELECT datapos as data_offset, height, hash as block_hash, txCount as txs
|
|
FROM block_info
|
|
WHERE file = ? AND height >= ? AND status&1 AND status&4
|
|
ORDER BY datapos ASC;
|
|
""", (block_file, start_height)
|
|
)
|
|
|
|
async def get_blocks_in_file(self, block_file: int, start_height=0) -> List[dict]:
|
|
return await self.run_in_executor(self.sync_get_blocks_in_file, block_file, start_height)
|
|
|
|
def sync_get_claim_support_txo_hashes(self, at_height: int) -> set:
|
|
return {
|
|
r['txID'] + BCDataStream.uint32.pack(r['txN'])
|
|
for r in self.connection.execute(
|
|
"""
|
|
SELECT txID, txN FROM claim WHERE updateHeight = ?
|
|
UNION
|
|
SELECT txID, txN FROM support WHERE blockHeight = ?
|
|
""", (at_height, at_height)
|
|
).fetchall()
|
|
}
|
|
|
|
def sync_get_takeover_count(self, start_height: int, end_height: int) -> int:
|
|
sql = "SELECT COUNT(*) FROM takeover WHERE height BETWEEN ? AND ?"
|
|
return self.connection.execute(sql, (start_height, end_height)).fetchone()[0]
|
|
|
|
async def get_takeover_count(self, start_height: int, end_height: int) -> int:
|
|
return await self.run_in_executor(self.sync_get_takeover_count, start_height, end_height)
|
|
|
|
def sync_get_takeovers(self, start_height: int, end_height: int) -> List[dict]:
|
|
return self.sync_execute_fetchall(
|
|
"""
|
|
SELECT
|
|
takeover.name,
|
|
takeover.claimID AS claim_hash,
|
|
takeover.height
|
|
FROM takeover
|
|
WHERE height BETWEEN ? AND ?
|
|
ORDER BY height, name
|
|
""", (start_height, end_height)
|
|
)
|
|
|
|
async def get_takeovers(self, start_height: int, end_height: int) -> List[dict]:
|
|
return await self.run_in_executor(self.sync_get_takeovers, start_height, end_height)
|
|
|
|
def sync_get_claim_metadata_count(self, start_height: int, end_height: int) -> int:
|
|
sql = "SELECT COUNT(*) FROM claim WHERE originalHeight BETWEEN ? AND ?"
|
|
return self.connection.execute(sql, (start_height, end_height)).fetchone()[0]
|
|
|
|
async def get_claim_metadata_count(self, start_height: int, end_height: int) -> int:
|
|
return await self.run_in_executor(self.sync_get_claim_metadata_count, start_height, end_height)
|
|
|
|
def sync_get_claim_metadata(self, start_height: int, end_height: int) -> List[dict]:
|
|
return [{
|
|
"name": r["name"],
|
|
"claim_hash_": r["claimID"],
|
|
"activation_height": r["activationHeight"],
|
|
"expiration_height": r["expirationHeight"],
|
|
"takeover_height": r["takeoverHeight"],
|
|
"is_controlling": r["isControlling"],
|
|
"short_url": f'{normalize_name(r["name"].decode())}#{r["shortestID"] or r["claimID"][::-1].hex()[0]}',
|
|
"short_url_": f'{normalize_name(r["name"].decode())}#{r["shortestID"] or r["claimID"][::-1].hex()[0]}',
|
|
} for r in self.sync_execute_fetchall(
|
|
"""
|
|
SELECT
|
|
name, claimID, activationHeight, expirationHeight,
|
|
(SELECT
|
|
CASE WHEN takeover.claimID = claim.claimID THEN takeover.height END
|
|
FROM takeover WHERE takeover.name = claim.name
|
|
ORDER BY height DESC LIMIT 1
|
|
) AS takeoverHeight,
|
|
(SELECT CASE WHEN takeover.claimID = claim.claimID THEN 1 ELSE 0 END
|
|
FROM takeover WHERE takeover.name = claim.name
|
|
ORDER BY height DESC LIMIT 1
|
|
) AS isControlling,
|
|
(SELECT find_shortest_id(c.claimid, claim.claimid) FROM claim AS c
|
|
WHERE
|
|
c.nodename = claim.nodename AND
|
|
c.originalheight <= claim.originalheight AND
|
|
c.claimid != claim.claimid
|
|
) AS shortestID
|
|
FROM claim
|
|
WHERE originalHeight BETWEEN ? AND ?
|
|
ORDER BY originalHeight, claimid
|
|
""", (start_height, end_height)
|
|
)]
|
|
|
|
async def get_claim_metadata(self, start_height: int, end_height: int) -> List[dict]:
|
|
return await self.run_in_executor(self.sync_get_claim_metadata, start_height, end_height)
|
|
|
|
def sync_get_support_metadata_count(self, start_height: int, end_height: int) -> int:
|
|
sql = "SELECT COUNT(*) FROM support WHERE blockHeight BETWEEN ? AND ?"
|
|
return self.connection.execute(sql, (start_height, end_height)).fetchone()[0]
|
|
|
|
async def get_support_metadata_count(self, start_height: int, end_height: int) -> int:
|
|
return await self.run_in_executor(self.sync_get_support_metadata_count, start_height, end_height)
|
|
|
|
def sync_get_support_metadata(self, start_height: int, end_height: int) -> List[dict]:
|
|
return [{
|
|
"name": r['name'],
|
|
"txo_hash_pk": r['txID'] + BCDataStream.uint32.pack(r['txN']),
|
|
"activation_height": r['activationHeight'],
|
|
"expiration_height": r['expirationHeight'],
|
|
} for r in self.sync_execute_fetchall(
|
|
"""
|
|
SELECT name, txid, txn, activationHeight, expirationHeight
|
|
FROM support WHERE blockHeight BETWEEN ? AND ?
|
|
""", (start_height, end_height)
|
|
)
|
|
]
|
|
|
|
async def get_support_metadata(self, start_height: int, end_height: int) -> List[dict]:
|
|
return await self.run_in_executor(self.sync_get_support_metadata, start_height, end_height)
|