40 lines
902 B
Python
40 lines
902 B
Python
from datetime import datetime
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from typing import List
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from mev_inspect.db import write_as_csv
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from mev_inspect.schemas.blocks import Block
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def delete_blocks(
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db_session,
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after_block_number: int,
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before_block_number: int,
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) -> None:
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db_session.execute(
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"""
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DELETE FROM blocks
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WHERE
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block_number >= :after_block_number AND
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block_number < :before_block_number
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""",
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params={
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"after_block_number": after_block_number,
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"before_block_number": before_block_number,
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},
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)
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db_session.commit()
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def write_blocks(
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db_session,
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blocks: List[Block],
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) -> None:
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items_generator = (
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(
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block.block_number,
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datetime.fromtimestamp(block.block_timestamp),
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)
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for block in blocks
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)
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write_as_csv(db_session, "blocks", items_generator)
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