Thanks for this change!

The directory_ls and indirectly the get_content performace was tested with this small script: P1163
A cold restart (all buffer cleared, cassandra restarted) is done between each tests (P1164)

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Rebase on top of D6262

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Rebase

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Explicit that the snapshot is null

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Forgot to catch the RemoteException case for the edge cases of the endpoint adaptation

The disk was received Monday and replaced Thuesday by Christophe from the DSI.
The raid card automatically launch the raid rebuild. Everything is ok now.

root@beaubourg:~#  megacli -PDList -aALL
...

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Fix tests hopefully

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Add extid_get_from_target to filter correctly on extid_type and extid_version.

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By the way, i forgot:

Drop no longer needed conditional

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Adapt docstring and rework commit message.

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Actually filter through snapshot then on the remaining data set, filter out through
extids mapping.

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• Use single regexp and strip quotes and spaces
• Handle UTF-8 encoding defined in rfc5987
• Add more test cases

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Possibly forgotten comment changes

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• Improve timeout while waiting for response handling on client side

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In D6252#161774, @anlambert wrote:

Update: Also handle quoted filename in content-disposition header parsing.

The filename should be sanitized. What about using just the extension, and only if it matches [a-zA-Z0-9_-]+?

• Add new RabbitMQ-based client/server API
• Split set method's requests into several queues on server side
• Remove get queues and have client read from ProvenanceStorage directly
• Add support for relation_add to the RabbitMQ server
• Refactor server to use multiple sub-processes instead of threads
• Rework ProvenanceStorageRabbitMQWorker to handle connection loss
• Remove old client/server storage based on swh.core.api.RPCClient
• Improve connection error handling on both client and server side
• Switch to use a topic exchange instead of a direct one on remote backend

I've suggested some refinements to the regexps, and I'd like the tests to have some more "adversarial" examples (e.g. filenames with spaces, headers with out of order fields, etc.), but this is still a good improvement over the status quo!

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• Split set method's requests into several queues on server side
• Remove get queues and have client read from ProvenanceStorage directly
• Add support for relation_add to the RabbitMQ server
• Refactor server to use multiple sub-processes instead of threads
• Rework ProvenanceStorageRabbitMQWorker to handle connection loss
• Remove old client/server storage based on swh.core.api.RPCClient
• Improve connection error handling on both client and server side
• Generalize types for content_add and directory_add in the storage interface
• Switch to use a topic exchange instead of a direct one on remote backend

Can you move it before git so it's sorted alphabetically?

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Rebase

Update: Also handle quoted filename in content-disposition header parsing.

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Add back dropped test (stash mix up)

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