59 lines
1.6 KiB
Python
59 lines
1.6 KiB
Python
from io import BufferedReader, BytesIO
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from json import JSONDecodeError
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import httpx
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class S3BufferedReader(BufferedReader):
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def __init__(self, workspace: str, windmill_client: httpx.Client, file_key: str, s3_resource_path: str | None, storage: str | None):
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params = {
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"file_key": file_key,
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}
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if s3_resource_path is not None:
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params["s3_resource_path"] = s3_resource_path
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if storage is not None:
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params["storage"] = storage
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self._context_manager = windmill_client.stream(
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"GET",
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f"/w/{workspace}/job_helpers/download_s3_file",
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params=params,
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timeout=None,
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)
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def __enter__(self):
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reader = self._context_manager.__enter__()
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self._iterator = reader.iter_bytes()
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return self
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def peek(self, size=0):
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raise Exception("Not implemented, use read() instead")
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def read(self, size=-1):
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read_result = []
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if size < 0:
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for b in self._iterator:
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read_result.append(b)
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else:
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for i in range(size):
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try:
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b = self._iterator.__next__()
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except StopIteration:
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break
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read_result.append(b)
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return b"".join(read_result)
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def read1(self, size=-1):
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return self.read(size)
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def __exit__(self, *args):
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self._context_manager.__exit__(*args)
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def bytes_generator(buffered_reader: BufferedReader | BytesIO):
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while True:
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byte = buffered_reader.read(50 * 1024)
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if not byte:
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break
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yield byte
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