BlockTimestampSlicer

Documentation for eth_defi.event_reader.timestamp_cache.BlockTimestampSlicer Python class.

class BlockTimestampSlicer

Bases: object

Read timestamps from DuckDB in slices iteratively.

• Maintain a memory buffer of block numbers

• Avoid reading all Arbitrum 20 GB of timestamp data to memory at once

Methods summary

__init__(timestamp_db[, slice_size])
close()	Release the associated cache db.
get(block_number)	Get timestamp for a given block number, or None if not found.
get_last_block()	Get the maximum block number in the database.

__init__(timestamp_db, slice_size=1000000)

Parameters

• timestamp_db (eth_defi.event_reader.timestamp_cache.BlockTimestampDatabase) –

• slice_size (int) –

get(block_number)

Get timestamp for a given block number, or None if not found.

Parameters

block_number (int) –

Return type

datetime.datetime | None

get_last_block()

Get the maximum block number in the database.

Return type

int

close()

Release the associated cache db.