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@github-actions github-actions released this 24 Feb 15:38
· 6 commits to firehose-fh3.0 since this release
geth-v1.15.2-fh3.0
c667ec8

This new Firehose 3.0 geth tracer is built on the new geth Core Tracing API introduced in Geth 1.14. This new version changes how one must start the geth binary.

Here what you need when you will update your reader-node's reader-node-arguments field when using this version:

  • Remove --firehose-enabled and any flag starting with --firehose-....
  • Add --vmtrace=firehose flag which activates Firehose output (Important do not miss this change, otherwise you will not process new blocks, will make it the default soon).
  • Add --syncmode=full flag which is not set automatically anymore.

Block Model

The Ethereum block model has been updated to account for upcoming Prague fork. Namely, we added support for the new SetCode transaction's type, added extracted SetCodeAuthorization elements from the transaction and added new gas changes that were introduced in the hard fork.

Also, totalDifficulty field is now deprecated, it has been removed entirely from geth codebase which means future reprocessing of data wouldn't be able to populated that field anymore. If you used that field somehow, you should stop using it. At some point
we will remove the field entirely.

Also, from Prague hard-fork and onward, the Block model will now switch to version 4 of the block model (a.k.a Firehose Ethereum Block 3.0). This means that for a given network, block.number < Prague, block will be using version 3 (a.k.a Firehose Ethereum Block 2.3) and when block.number >= Prague, it will be version 4. This is deterministic per network as the Prague block is deterministic.

This does not change at the structure of the various element, everything stays the same in that aspect so the version 4 model is
backward compatible. What the new version changes:

  • Does not populate accountCreations field anymore, this was bogus from day 1 and should never be used.
  • Fix executedCode field to be more accurate now, as soon as one opcode is executed, this will be set now and not otherwise.
  • The root's call BeginOrdinal is now fixed and not always 0.
  • Ordinals in presence of system calls are now correctly ordered.
  • The returnData is now properly populated.
  • The keccakPreimage data being "." is now fixed.
  • The call's input field is now properly populated on contract creation, it was omitted before.
  • There is new gas changed behind recorded now mainly for full view of how gas is allocated, consumed and returned.
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