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Implement NO_DUPLICATE_DEFERRED_ID protocol feature #7072

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merged 10 commits into from
Apr 11, 2019

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@arhag arhag commented Apr 4, 2019

Change Description

Resolves #6115.

This PR adds support for the NO_DUPLICATE_DEFERRED_ID protocol feature which makes changes to ensure that it is virtually impossible for deferred transactions to end up with a transaction ID that collides with the ID of any other transaction that is scheduled/retired in the blockchain, and also makes it possible for a contract to know the transaction ID of the scheduled deferred transaction prior to sending it.

This PR also makes changes to better handle the error case of a transaction containing disallowed extensions.

This PR introduces a new unit test protocol_feature_tests/no_duplicate_deferred_id_test to test the behavior of this new protocol feature. The deferred_test test contract was augmented to meet the needs of the new unit test.

Consensus Changes

  • Consensus Changes

Makes the NO_DUPLICATE_DEFERRED_ID protocol feature available. See above description and #6115 for details.

The NO_DUPLICATE_DEFERRED_ID protocol feature depends on the REPLACE_DEFERRED protocol feature (#6997). See this comment for details about what that means.

API Changes

  • API Changes

Documentation Additions

  • Documentation Additions

Allows the `num_failed` tracker and blacklist of producer_plugin to work 
as intended.
Preserves the current pattern of not retiring (except for case with 
expired status) deferred transaction with invalid extensions even after 
NO_DUPLICATE_DEFERRED_ID activation.
… the getAllBuiltinFeatureDigestsToPreactivate function in Node.py #6115
…to test the NO_DUPLICATE_DEFERRED_ID protocol feature. #6115

Updated the deferred_test test contract to support testing requirements 
of new test.
@arhag arhag marked this pull request as ready for review April 9, 2019 01:01
@taokayan taokayan self-requested a review April 11, 2019 01:07
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2 participants