Streaming read/writes to Google Storage blobs with ascynchronous buffering.
Project description
gs-chunked-io: Streams for Google Storage
gs-chunked-io provides transparently chunked io streams for google storage objects. Writable streams are managed as multipart objects, composed when the stream is closed.
IO opperations are concurrent by default. The number of concurrent threads can be adjusted using the threads
parameter, or disabled entirely with threads=None.
import gs_chunked_io as gscio
from google.cloud.storage import Client
client = Client()
bucket = client.bucket("my-bucket")
blob = bucket.get_blob("my-key")
# Readable stream:
with gscio.Reader(blob) as fh:
fh.read(size)
# Writable stream:
with gscio.Writer("my_new_key", bucket) as fh:
fh.write(data)
# Process blob in chunks:
for chunk in gscio.for_each_chunk(blob):
my_chunk_processor(chunk)
# Multipart copy with processing:
dst_bucket = client.bucket("my_dest_bucket")
with gscio.Writer("my_dest_key", dst_bucket) as writer:
for chunk in gscio.for_each_chunk(blob)
process_my_chunk(chunk)
writer(chunk)
# Extract .tar.gz on the fly:
import gzip
import tarfile
with gscio.Reader(blob) as fh:
gzip_reader = gzip.GzipFile(fileobj=fh)
tf = tarfile.TarFile(fileobj=gzip_reader)
for tarinfo in tf:
process_my_tarinfo(tarinfo)
Installation
pip install gs-chunked-io
Links
Project home page GitHub
Package distribution PyPI
Bugs
Please report bugs, issues, feature requests, etc. on GitHub.
Release history Release notifications | RSS feed
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