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        "author": "Michal Charemza",
        "author_email": "michal@charemza.name",
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        "description": "# lowhaio-aws-sigv4-unsigned-payload [![CircleCI](https://circleci.com/gh/michalc/lowhaio-aws-sigv4-unsigned-payload.svg?style=svg)](https://circleci.com/gh/michalc/lowhaio-aws-sigv4-unsigned-payload)\n\nAWS Signature Version 4 signing for [lowhaio](https://github.com/michalc/lowhaio), but with UNSIGNED-PAYLOAD. This avoids having to buffer entire objects to memory before upload to S3. However, the length of the object must be known before upload begins.\n\n\n## Installation\n\n```bash\npip install lowhaio lowhaio_aws_sigv4_unsigned_payload\n```\n\n\n## Usage\n\nThe `request` function returned from `lowhaio.Pool` must be wrapped with `lowhaio_aws_sigv4_unsigned_payload.signed`, as in the below example.\n\n```python\nimport os\nfrom lowhaio import Pool\nfrom lowhaio_aws_sigv4_unsigned_payload import signed\n\nrequest, _ = Pool()\n\n\nchunk = 'abcdefghijklmnopqrstuvqxyz'\ncontent_length = str(len(chunk) * 1000).encode()\nasync def body():\n    for _ in range(0, 1000)\n    \tyield chunk\n\n# A coroutine that returns a tuple a tuple of access key id, secret access\n# key, any other headers, such as x-amz-security-token\nasync def credentials():\n    return os.environ['AWS_ACCESS_KEY_ID'], os.environ['AWS_SECRET_ACCESS_KEY'], ()\n\nsigned_request = request(\n    request, credentials=credentials, service='s3', region='eu-west-1',\n)\n\ncode, headers, body = await signed_request(\n\tb'PUT', 'https://my-bucket.s3-eu-west-1.amazonaws.com/my-key', body=body\n\theaders=((b'content-length': content_length),))\nawait buffered(body)\n```\n\n\n",
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