Forward rasterio env options in multibase Reader

[vincentsarago]

in MultiBaseReader (STAC) we initiate a new rasterio.Env to be able to set the Header size from each file. Sadly when we do this we loose any env options passed in a top level env

with rasterio.Env(
    session=AWSSession(
        aws_access_key_id="MyDevseedId",
        aws_secret_access_key="MyDevseedKey",
    )
):
    with rasterio.open("s3://ds-satellite/cogs/NaturalEarth/world_grey.tif") as src:
        print(src.profile)
    
    with rasterio.Env():
        with rasterio.open("s3://ds-satellite/cogs/NaturalEarth/world_grey_1024_512.tif") as src:
            print(src.profile)

{'driver': 'GTiff', 'dtype': 'uint8', 'nodata': None, 'width': 21580, 'height': 10780, 'count': 3, 'crs': CRS.from_epsg(4326), 'transform': Affine(0.01666666666667, 0.0, -179.8333333333333,
       0.0, -0.01666666666667, 89.83333333333331), 'blockxsize': 128, 'blockysize': 128, 'tiled': True, 'compress': 'jpeg', 'interleave': 'pixel', 'photometric': 'ycbcr'}

rasterio/_base.pyx in rasterio._base.DatasetBase.__init__()

RasterioIOError: Access Denied

First reported in NASA-IMPACT/veda-backend#192

[vincentsarago]

😭 This is also true for mosaic

from rio_tiler.tasks import create_tasks, filter_tasks
import rasterio
from rasterio.session import AWSSession


with rasterio.Env(
    session=AWSSession(
        aws_access_key_id="MyDevseedId",
        aws_secret_access_key="MyDevseedKey",
    ),
):
    paths = [
        "s3://ds-satellite/cogs/NaturalEarth/world_grey.tif",
        "s3://ds-satellite/cogs/NaturalEarth/world_grey_512_256.tif",
    ]
    
    def reader(path):
        with rasterio.open(path) as src:
            return src.profile
        
    tasks = filter_tasks(create_tasks(reader, paths, threads=2))

>> RasterioIOError: Access Denied

I always assumed that rasterio was picking the envs from top level but no. It will create a new Env per thread, I guess this is why stackstac does https://github.com/gjoseph92/stackstac/blob/main/stackstac/rio_reader.py

cc @ranchodeluxe @sharkinsspatial

[ranchodeluxe]

@vincentsarago : given the lack of motion on rasterio/rasterio#2866 is there a fix you're working on here now? Or is this something I can take swing at when I get a chance?