pypaimon/pynative/write/file_store_write.py

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import pyarrow as pa
from typing import Dict, Tuple, List

from pypaimon.pynative.write.commit_message_impl import CommitMessageImpl
from pypaimon.pynative.write.writer.append_only_data_writer import AppendOnlyDataWriter
from pypaimon.pynative.write.writer.data_writer import DataWriter
from pypaimon.api import CommitMessage
from pypaimon.pynative.write.writer.key_value_data_writer import KeyValueDataWriter


class FileStoreWrite:
    """Base class for file store write operations."""

    def __init__(self, table):
        from pypaimon.pynative.table.file_store_table import FileStoreTable

        self.table: FileStoreTable = table
        self.data_writers: Dict[Tuple, DataWriter] = {}

    def write(self, partition: Tuple, bucket: int, data: pa.RecordBatch):
        key = (partition, bucket)
        if key not in self.data_writers:
            self.data_writers[key] = self._create_data_writer(partition, bucket)
        writer = self.data_writers[key]
        writer.write(data)

    def _create_data_writer(self, partition: Tuple, bucket: int) -> DataWriter:
        if self.table.is_primary_key_table:
            return KeyValueDataWriter(
                table=self.table,
                partition=partition,
                bucket=bucket,
            )
        else:
            return AppendOnlyDataWriter(
                table=self.table,
                partition=partition,
                bucket=bucket,
            )

    def prepare_commit(self) -> List[CommitMessage]:
        commit_messages = []
        for (partition, bucket), writer in self.data_writers.items():
            committed_files = writer.prepare_commit()
            if committed_files:
                commit_message = CommitMessageImpl(
                    partition=partition,
                    bucket=bucket,
                    new_files=committed_files
                )
                commit_messages.append(commit_message)
        return commit_messages

    def close(self):
        """Close all data writers and clean up resources."""
        for writer in self.data_writers.values():
            writer.close()
        self.data_writers.clear()