Push tracing of Parlia system transactions so that live tracers can properly traces those state changes #2772
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Description
See #2768 for context and details.
This introduced
OnSystemTxStart/OnSystemTxEnd
and renamedOnSystemTxEnd
toOnSystemTxFixIntrinsicGas
(soOnSystemTxEnd
can be re-used for other purposes).The Parlia engine is now tracing it's system transaction properly which was not the case before.
Rationale
This PR ensure that system transactions are properly tested when using live tracers.
Changes
Consensus engine is now receiving a
tracer *tracing.Hooks
that Parlia engine then uses when needing to apply system transactions.