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http txns: Do not cache error responses#1913
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erikjohnston merged 4 commits intodevelopfrom Feb 13, 2017
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Previously we did. This meant that, amongst other errors, rate-limiting errors would be cached and prevent messages with that txn ID being sent.
synapse/rest/client/transactions.py
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| # (a Twisted failure), remove it from the transaction map. | ||
| # This is done to ensure that we don't cache rate-limiting errors, etc. | ||
| res = observable.get_result() | ||
| if res.value.code >= 300: |
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Not all errors have a .code. Usually we do this sort of thing by adding an errBack to the deferred to remove the entry from the cache
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What should I do to check if there is a code attribute? Try to cast to CodeMessageException?
synapse/rest/client/transactions.py
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| # from the transaction map. This is done to ensure that we don't | ||
| # cache transient errors like rate-limiting errors, etc. | ||
| def remove_from_map(err): | ||
| del self.transactions[txn_key] |
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I'd actually do this as self.transactions.pop(txn_key, None) just in case the txn has already been deleted somehow. (del will throw if it doesn't exsit)
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@erikjohnston PTAL |
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Changes in synapse v0.19.3-rc1 (2017-03-08) =========================================== Features: * Add some administration functionalities. Thanks to morteza-araby! (PR #1784) Changes: * Reduce database table sizes (PR #1873, #1916, #1923, #1963) * Update contrib/ to not use syutil. Thanks to andrewshadura! (PR #1907) * Don't fetch current state when sending an event in common case (PR #1955) Bug fixes: * Fix synapse_port_db failure. Thanks to Pneumaticat! (PR #1904) * Fix caching to not cache error responses (PR #1913) * Fix APIs to make kick & ban reasons work (PR #1917) * Fix bugs in the /keys/changes api (PR #1921) * Fix bug where users couldn't forget rooms they were banned from (PR #1922) * Fix issue with long language values in pushers API (PR #1925) * Fix a race in transaction queue (PR #1930) * Fix dynamic thumbnailing to preserve aspect ratio. Thanks to jkolo! (PR #1945) * Fix device list update to not constantly resync (PR #1964) * Fix potential for huge memory usage when getting device that have changed (PR #1969)
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Previously we did. This meant that, amongst other errors, rate-limiting errors
would be cached and prevent messages with that txn ID being sent.