Bucket.download_file_by_name fails when getting bucket with B2Api.get_bucket_by_id

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Valutazione

Difficoltà
3/5
Tempo stimato
Mezza giornata
Idoneità per principianti
42/100
Tipo di issue
Bug
Chiarezza
Abbastanza chiara
Stato di attività
Ferma
Stack tecnologico
python
Ambito
cloud

Direzione di ricerca

Start with download_file_by_name() in b2sdk/bucket.py, which assumes self.name is set, and compare it with get_bucket_by_name() to see how a Bucket built by B2Api.get_bucket_by_id() gets its name. Reproduce with the snippet in the issue, then check that a download by name works after fetching the bucket by id. The work is probably already superseded in the current release, so confirm against the latest code before starting.

Scritto dal modello di indicizzazione a partire dal testo della issue.

Descrizione

bug good first issue

After getting a Bucket instance by calling B2Api.get_bucket_by_id(), I'm unable to download files with bucket.download_file_by_name(). A minimal example of the problem:

from b2sdk.v1 import InMemoryAccountInfo, B2Api, DownloadDestLocalFile

app_id = '<app_id>'
app_key = '<app_key>'
bucket_id = '<bucket_id>'
bucket_name = '<bucket_name>'

b2 = B2Api(InMemoryAccountInfo())
b2.authorize_account('production', app_id, app_key)

bucket = b2.get_bucket_by_id(bucket_id)
# bucket = b2.get_bucket_by_name(bucket_name)

dst = DownloadDestLocalFile('local_file_name')
bucket.download_file_by_name('<b2_file_path>', dst)

If the commented line that calls get_bucket_by_name() is used instead, the snippet works as expected.

Tried both v1.0.2 on PyPI and installing directly from master (more specifically 1707190972a5d6807c7d928dd5d295dce6920915).

The problem seems to be that the Bucket class assumes that its name attribute is always set in download_file_by_name() which is not a correct assumption when the bucket is instantiated with B2Api.get_bucket_by_id().

Is this a bug or have I missed something in the documentation?

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