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* Make ObservableDeferred.observe() always return deferred.Erik Johnston2019-10-301-2/+2
| | | | | | | This makes it easier to use in an async/await world. Also fixes a bug where cache descriptors would occaisonally return a raw value rather than a deferred.
* Quick fix to ensure cache descriptors always return deferredsErik Johnston2019-10-281-2/+2
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* Retry well-known lookup before expiry.Erik Johnston2019-08-131-2/+2
| | | | | | | | | This gives a bit of a grace period where we can attempt to refetch a remote `well-known`, while still using the cached result if that fails. Hopefully this will make the well-known resolution a bit more torelant of failures, rather than it immediately treating failures as "no result" and caching that for an hour.
* Fix some error cases in the caching layer. (#5749)Richard van der Hoff2019-07-251-3/+87
| | | | | | | There was some inconsistent behaviour in the caching layer around how exceptions were handled - particularly synchronously-thrown ones. This seems to be most easily handled by pushing the creation of ObservableDeferreds down from CacheDescriptor to the Cache.
* Replace returnValue with return (#5736)Amber Brown2019-07-231-4/+4
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* Move logging utilities out of the side drawer of util/ and into logging/ (#5606)Amber Brown2019-07-041-29/+20
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* Run Black. (#5482)Amber Brown2019-06-202-53/+53
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* Add a caching layer to .well-known responses (#4516)Richard van der Hoff2019-01-301-0/+83
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* Run black.black2018-08-101-26/+20
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* fix invalidationRichard van der Hoff2018-07-271-1/+41
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* Rewrite cache list decoratorRichard van der Hoff2018-07-271-0/+61
| | | | | Because it was complicated and annoyed me. I suspect this will be more efficient too.
* run isortAmber Brown2018-07-091-2/+5
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* Reinstate lost run_on_reactor in unit testRichard van der Hoff2018-07-041-2/+15
| | | | | | | | a61738b removed a call to run_on_reactor from a unit test, but that call was doing something useful, in making the function in question asynchronous. Reinstate the call and add a check that we are testing what we wanted to be testing.
* Remove run_on_reactor (#3395)Amber Brown2018-06-141-2/+0
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* Fix overzealous cache invalidationRichard van der Hoff2018-04-051-0/+46
| | | | | Fixes an issue where a cache invalidation would invalidate *all* pending entries, rather than just the entry that we intended to invalidate.
* Fix up testsErik Johnston2017-03-301-0/+38
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* Fix the logcontext handling in the cache wrappers (#2077)Richard van der Hoff2017-03-301-0/+91
| | | | | | | The cache wrappers had a habit of leaking the logcontext into the reactor while the lookup function was running, and then not restoring it correctly when the lookup function had completed. It's all the fault of `preserve_context_over_{fn,deferred}` which are basically a bit broken.
* Fix caching of remote servers' signature keysRichard van der Hoff2017-03-222-0/+100
The `@cached` decorator on `KeyStore._get_server_verify_key` was missing its `num_args` parameter, which meant that it was returning the wrong key for any server which had more than one recorded key. By way of a fix, change the default for `num_args` to be *all* arguments. To implement that, factor out a common base class for `CacheDescriptor` and `CacheListDescriptor`.