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fix(storage): use OrderedDict while encoding POST policy #95

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merged 3 commits into from Apr 1, 2020
Merged

fix(storage): use OrderedDict while encoding POST policy #95

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3265bb7
use OrderedDict() while encoding POST policy
Apr 1, 2020
73aca83
fix(storage): use OrderedDict() while encoding POST policy
Apr 1, 2020
dfb2d5b
Merge branch 'post_policies_flaky_fix' of https://github.com/q-logic/…
Apr 1, 2020
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10 changes: 9 additions & 1 deletion google/cloud/storage/client.py
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Expand Up @@ -16,6 +16,7 @@

import base64
import binascii
import collections
import datetime
import functools
import json
Expand Down Expand Up @@ -972,7 +973,14 @@ def generate_signed_post_policy_v4(

# encode policy for signing
policy = json.dumps(
{"conditions": conditions, "expiration": policy_expires.isoformat() + "Z"},
collections.OrderedDict(
sorted(
{
"conditions": conditions,
"expiration": policy_expires.isoformat() + "Z",
}.items()
)
),
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expiration sometimes encoded before conditions - in such a cases tests are failing

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I'm a little concerned about imposing order in signing code given it's only used for conformance tests.

However, it doesn't change the outcome of expectation and will work as expected as a user.

separators=(",", ":"),
)
str_to_sign = base64.b64encode(policy.encode("utf-8"))
Expand Down
7 changes: 4 additions & 3 deletions tests/unit/test_client.py
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Expand Up @@ -1762,6 +1762,10 @@ def test_conformance_post_policy(test_data):
scheme=in_data.get("scheme"),
)
fields = policy["fields"]
out_data = test_data["policyOutput"]

decoded_policy = base64.b64decode(fields["policy"]).decode("unicode_escape")
assert decoded_policy == out_data["expectedDecodedPolicy"]
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Moved decoded_policy assert to the top: if something gone wrong in policy, it'll be easier to see it in decoded state - probably will save some time on debugging


for field in (
"x-goog-algorithm",
Expand All @@ -1771,9 +1775,6 @@ def test_conformance_post_policy(test_data):
):
assert fields[field] == test_data["policyOutput"]["fields"][field]

out_data = test_data["policyOutput"]
decoded_policy = base64.b64decode(fields["policy"]).decode("unicode_escape")
assert decoded_policy == out_data["expectedDecodedPolicy"]
assert policy["url"] == out_data["url"]


Expand Down