064f37d6f6
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> |
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| .. | ||
| testdata | ||
| README.md | ||
| calltrace_test.go | ||
| flat_calltrace_test.go | ||
| makeTest.js | ||
| prestate_test.go | ||
| util.go | ||
README.md
Filling test cases
To fill test cases for the built-in tracers, the makeTest.js script can be used. Given a transaction on a dev/test network, makeTest.js will fetch its prestate and then traces with the given configuration.
In the Geth console do:
let tx = '0x...'
loadScript('makeTest.js')
makeTest(tx, { tracer: 'callTracer' })