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Add jwt.OnDemandCredentials #142

Merged
merged 2 commits into from
Mar 28, 2017
Merged

Add jwt.OnDemandCredentials #142

merged 2 commits into from
Mar 28, 2017

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theacodes
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Resolves #136.

Note: this adds a new dependency on cachetools.

@theacodes
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/cc @jboeuf

@jboeuf
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jboeuf commented Mar 23, 2017

waow. Awesome. thanks much for the quick turnaround!

@theacodes
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waow. Awesome. thanks much for the quick turnaround!

We had most of this code already, we just needed justification for it.

@jboeuf
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jboeuf commented Mar 23, 2017 via email

@theacodes
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@dhermes @lukesneeringer re-based and should be ready for review. :)

dhermes
dhermes reviewed Mar 28, 2017
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What should I know about cachetools (never having used it)? Worth making it an optional dependency?

google/auth/jwt.py Outdated
import google.auth.credentials


_DEFAULT_TOKEN_LIFETIME_SECS = 3600 # 1 hour in seconds
_DEFAULT_TOKEN_LIFETIME_SECS = 3600 # 1 hour in sections

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google/auth/jwt.py
Args:
signer (google.auth.crypt.Signer): The signer used to sign JWTs.
issuer (str): The `iss` claim.
subject (str): The `sub` claim.

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google/auth/jwt.py
signer (google.auth.crypt.Signer): The signer used to sign JWTs.
issuer (str): The `iss` claim.
subject (str): The `sub` claim.
additional_claims (Mapping[str, str]): Any additional claims for

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google/auth/jwt.py
max_cache_size (int): The maximum number of JWT tokens to keep in
cache. Tokens are cached using :class:`cachetools.LRUCache`.
"""
super(OnDemandCredentials, self).__init__()

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google/auth/jwt.py Outdated
if additional_claims is not None:
self._additional_claims = additional_claims
else:
self._additional_claims = {}

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google/auth/jwt.py Outdated
def valid(self):
"""Checks the validity of the credentials.

These credentials are always valid.

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google/auth/jwt.py Outdated
Returns:
bytes: The encoded JWT.
"""

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google/auth/jwt.py
google.auth.RefreshError
"""
# pylint: disable=unused-argument
# (pylint doesn't correctly recognize overridden methods.)

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tests/test_jwt.py Outdated
@@ -343,3 +344,135 @@ def test_before_request_refreshes(self):
self.credentials.before_request(
None, 'GET', 'http:https://example.com?a=1#3', {})
assert self.credentials.valid


class TestOnDemandCredentials:

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tests/test_jwt.py Outdated
SERVICE_ACCOUNT_EMAIL = '[email protected]'
SUBJECT = 'subject'
ADDITIONAL_CLAIMS = {'meta': 'data'}
credentials = None

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@theacodes
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What should I know about cachetools (never having used it)? Worth making it an optional dependency?

It's a very well tested, maintained, and focused library that provides a pretty damn good implementation of an LRU cache. We could alternatively just pull in the LRUCache class (and associated tests) into this library.

@dhermes
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dhermes commented Mar 28, 2017

Your call

@theacodes
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I'm okay with the dependency. @lukesneeringer WDYT?

@lukesneeringer
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Just did some quick research. I prefer the dep over vendoring.

@theacodes theacodes merged commit cfbfd25 into master Mar 28, 2017
@theacodes theacodes deleted the on-demand-jwt branch March 28, 2017 20:03
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@dhermes dhermes dhermes approved these changes

@lukesneeringer lukesneeringer Awaiting requested review from lukesneeringer

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4 participants
@theacodes @jboeuf @dhermes @lukesneeringer