Commit Graph

4 Commits

Author SHA1 Message Date
Sina M 064f37d6f6
eth/tracers: live chain tracing with hooks (#29189)
Here we add a Go API for running tracing plugins within the main block import process. 

As an advanced user of geth, you can now create a Go file in eth/tracers/live/, and within
that file register your custom tracer implementation. Then recompile geth and select your tracer
on the command line. Hooks defined in the tracer will run whenever a block is processed.

The hook system is defined in package core/tracing. It uses a struct with callbacks, instead of 
requiring an interface, for several reasons:

- We plan to keep this API stable long-term. The core/tracing hook API does not depend on
  on deep geth internals.
- There are a lot of hooks, and tracers will only need some of them. Using a struct allows you
   to implement only the hooks you want to actually use.

All existing tracers in eth/tracers/native have been rewritten to use the new hook system.

This change breaks compatibility with the vm.EVMLogger interface that we used to have.
If you are a user of vm.EVMLogger, please migrate to core/tracing, and sorry for breaking
your stuff. But we just couldn't have both the old and new tracing APIs coexist in the EVM.

---------

Co-authored-by: Matthieu Vachon <matthieu.o.vachon@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
Co-authored-by: Martin HS <martin@swende.se>
2024-03-22 18:53:53 +01:00
Martin Holst Swende 2c6dda5ad7
eth/tracers: use non-threaded tracechain (#24283)
This makes non-JS tracers execute all block txs on a single goroutine.
In the previous implementation, we used to prepare every tx pre-state
on one goroutine, and then run the transactions again with tracing enabled.
Native tracers are usually faster, so it is faster overall to use their output as
the pre-state for tracing the next transaction.

Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
2023-01-10 15:11:53 +01:00
Martin Holst Swende 1f35988a00
eth/tracers, core/vm: remove `time` from trace output and tracing interface (#26291)
This removes the 'time' field from logs, as well as from the tracer interface. This change makes the trace output deterministic.  If a tracer needs the time they can measure it themselves. No need for evm to do this.

Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
2022-12-05 16:57:47 +01:00
Sina Mahmoodi 53b624b56d
eth/tracers: add multiplexing tracer (#26086)
* eth/tracers: add native multiplexing tracer

* minor improv callTracer

* mv evm cancellation to api
2022-11-08 10:16:52 +01:00