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02110d3f34
## Why this should be merged Adds logging of `libevm` modification of default behaviour. ## How this works 1. Introduces `log.Lazy` functions to allow expensive logging operations to be computed i.f.f. required by the logging level. 2. Adds `Info` logging for registration of types and `Debug` logging for all else. 3. Only paths that change behaviour in a potentially unpredictable manner are logged; of note, RLP / JSON encoding is _not_ considered unpredictable given that registered extras are logged. 4. The minimal viable package, `set`, was necessary because we don't want to depend on `avalanchego` and the `hashicorp/go-set` latest version requires a later version of Go. #153 tracks a swap to the latter when possible. The `eth/tracers/internal/tracetest` test flaked at least twice (unrelated to these changes) so I've marked it as such since it's not worth a separate PR. ## How this was tested New unit test on `log.Lazy` + `set` methods. Existing CI for the rest as it's a refactor.
45 lines
1.6 KiB
Go
45 lines
1.6 KiB
Go
// Copyright 2025 the libevm authors.
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//
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// The libevm additions to go-ethereum are free software: you can redistribute
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// them and/or modify them under the terms of the GNU Lesser General Public License
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// as published by the Free Software Foundation, either version 3 of the License,
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// or (at your option) any later version.
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//
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// The libevm additions are distributed in the hope that they will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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// General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see
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// <http://www.gnu.org/licenses/>.
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package vm
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import (
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"github.com/ava-labs/libevm/common"
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"github.com/ava-labs/libevm/libevm"
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"github.com/ava-labs/libevm/log"
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)
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// canCreateContract is a convenience wrapper for calling the
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// [params.RulesHooks.CanCreateContract] hook.
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func (evm *EVM) canCreateContract(caller ContractRef, contractToCreate common.Address, gas uint64) (remainingGas uint64, _ error) {
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addrs := &libevm.AddressContext{Origin: evm.Origin, Caller: caller.Address(), Self: contractToCreate}
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gas, err := evm.chainRules.Hooks().CanCreateContract(addrs, gas, evm.StateDB)
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// NOTE that this block only performs logging and that all paths propagate
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// `(gas, err)` unmodified.
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if err != nil {
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log.Debug(
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"Contract creation blocked by libevm hook",
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"origin", addrs.Origin,
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"caller", addrs.Caller,
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"contract", addrs.Self,
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"hooks", log.TypeOf(evm.chainRules.Hooks()),
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"reason", err,
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)
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}
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return gas, err
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}
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