FlatCallTracer had a crasher when it was passed `onlyTopCall: true` as config.
This PR ignores config fields inherited from the normal call tracer.
Co-authored-by: minh-bq <97180373+minh-bq@users.noreply.github.com>
Use the new atomic types in package eth/tracers
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Co-authored-by: s7v7nislands <s7v7nislands@gmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
This includes a semantic change to the `callTracer` as well as `flatCallTracer`.
The value of field `gas` in the **first** call frame will change as follows:
- It previously contained gas available after initial deductions (i.e. tx costs)
- It will now contain the full tx gasLimit value
Signed-off-by: jsvisa <delweng@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
This PR fixes OOM panic in the callTracer as well as panicing on
opcode validation errors (e.g. stack underflow) in callTracer and
prestateTracer.
Co-authored-by: jwasinger <j-wasinger@hotmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
Adds support for a native call tracer with the Parity format, which outputs call frames
in a flat array. This tracer accepts the following options:
- `convertParityErrors: true` will convert error messages to match those of Parity
- `includePrecompiles: true` will report all calls to precompiles. The default
matches Parity's behavior where CALL and STATICCALLs to precompiles are excluded
Incompatibilities with Parity include:
- Parity removes the result object in case of failure. This behavior is maintained
with the exception of reverts. Revert output usually contains useful information,
i.e. Solidity revert reason.
- The `gasUsed` field accounts for intrinsic gas (e.g. 21000 for simple transfers)
and refunds unlike Parity
- Block rewards are not reported
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
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: Martin Holst Swende <martin@swende.se>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
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>
Use noopTracer as a base for other native tracers to avoid extra boilerplate for unimplemented hooks.
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
* eth/tracers: add native multiplexing tracer
* minor improv callTracer
* mv evm cancellation to api
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
In some cases, it is desirable to capture what is triggered by each trace, when using the `callTracer`. For example: call `USDT.transfer` will trigger a `Transfer(from, to, value)` event.
This PR adds the option to capture logs to the call tracer, by specifying `{"withLog": true}` in the tracerconfig.
Any logs belonging to failed/reverted call-scopes are removed from the output, to prevent interpretation mistakes.
Signed-off-by: Delweng <delweng@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
Inner call reverts will now return the reason similar to the top-level call. Separately, if top-level call is of type CREATE and it fails, its `to` field will now be cleared to `0x00...00` instead of being set to the created address.
Co-authored-by: Nicolas Gotchac <ngotchac@gmail.com>
* eth/tracers: fix gasUsed in call tracer
* fix js tracers gasUsed
* fix legacy prestate tracer
* fix restGas in test
* drop intrinsicGas field from js tracers
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
The prestate tracer did not report accounts that existed at a given address prior to a contract being created at that address.
Signed-off-by: Delweng <delweng@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
Co-authored-by: Sina Mahmoodi <itz.s1na@gmail.com>
In some cases, inner contract creation may not be successful, and an inner contract was not created. This PR fixes a crash that could occur when doing tracing in such situations.
Co-authored-by: Delweng <delweng@gmail.com>
Backwards compatibility warning: The result will from now on omit empty fields instead
of including a zero value (e.g. no more `balance: '0x'`).
The prestateTracer will now take an option `diffMode: bool`. In this mode
the tracer will output the pre state and post data for the modified parts of state.
Read-only accesses will be completely omitted. Creations (be it account or slot)
will be signified by omission in the `pre` list and inclusion in `post`. Whereas
deletion (be it account or slot) will be signified by inclusion in `pre` and omission
in `post` list.
Signed-off-by: Delweng <delweng@gmail.com>
Co-authored-by: Delweng <delweng@gmail.com>
* eth/tracers: add revertReason to callTracer
* update callframe gen json
* add revertal to calltrace test
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
The call tracer and prestate tracer store data JSON-encoded in memory. In order to support alternative encodings (specifically RLP), it's better to keep data a native format during tracing. This PR does marshalling at the end, using gencodec.
OBS!
This PR changes the call tracer result slightly:
- Order of type and value fields are changed (should not matter).
- Output fields are completely omitted when they're empty (no more output: "0x"). Previously, this was only _sometimes_ omitted (e.g. when call ended in a non-revert error) and otherwise 0x when the output was actually empty.
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
Adds a native tracer that returns that in case of failure returns the error message or the revert reason of a transaction.
Co-authored-by: Philip Fan <fanwengang@hotmail.com>
Co-authored-by: Martin Holst Swende <martin@swende.se>
* core,eth: add empty tx logger hooks
* core,eth: add initial and remaining gas to tx hooks
* store tx gasLimit in js tracer
* use gasLimit to compute intrinsic cost for js tracer
* re-use rules in transitiondb
* rm logs
* rm logs
* Mv some fields from Start to TxStart
* simplify sender lookup in prestate tracer
* mv env to TxStart
* Revert "mv env to TxStart"
This reverts commit 656939634b9aff19f55a1cd167345faf8b1ec310.
* Revert "simplify sender lookup in prestate tracer"
This reverts commit ab65bce48007cab99e68232e7aac2fe008338d50.
* Revert "Mv some fields from Start to TxStart"
This reverts commit aa50d3d9b2559addc80df966111ef5fb5d0c1b6b.
* fix intrinsic gas for prestate tracer
* add comments
* refactor
* fix test case
* simplify consumedGas calc in prestate tracer
Co-authored-by: Sina Mahmoodi <1591639+s1na@users.noreply.github.com>
* feat: rename Tracer interface to EVMLogger;
minor changes in API
refine api_tracer.go
refine Tracer interface
* fix: broken tracer tests
* feat: add BenchmarkTransactionTrace
* feat: tracer CaptureEnter CaptureExit in evm
* feat: upgrade js tracers with geth upstream
* chore: clean test
* feat: eth/tracers: support for golang tracers + add golang callTracer
cf. https://github.com/ethereum/go-ethereum/pull/23708
* chore: clean testdata json
* fix: change test due to IntrinsicGas is not upgraded
* feat: make native Tracer the default Tracer
* fix: update tracers.New in api
* fix: addr prefix in callTracer
* fix: remove `native` in BenchmarkTracers
* fix: return consensus error of InsufficientBalance for tx, instead of vmerr
* chore: drop js tracers: call and noop
