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fix(baseapp): Use CometBFT's ComputeProtoSizeForTxs in defaultTxSelector.SelectTxForProposal #18551

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merged 2 commits into from
Nov 30, 2023

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@lllleven lllleven commented Nov 23, 2023

Description

ref: #18547

Tx byte size calculations are consistent with cometbft

PrepareProposalHandler SelectTxForProposal Tx bytes the inconsistent calculation methods are causing block production failures.


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Summary by CodeRabbit

  • Bug Fixes

    • Fixed an issue in the transaction selection process where the calculation of transaction byte size was inconsistent with CometBFT standards.
  • Documentation

    • Updated the changelog to reflect the fix in the transaction byte size calculation method.

@lllleven lllleven requested a review from a team as a code owner November 23, 2023 13:14
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Walkthrough

Walkthrough

The changes involve a fix to the SelectTxForProposal function in the baseapp module, ensuring the method for calculating transaction byte size aligns with CometBFT's approach. This update is likely to enhance the accuracy and consistency of transaction size computation during the proposal selection process. The modifications include adjustments to the function itself and corresponding test cases, as well as documentation updates in the CHANGELOG.md.

Changes

File Change Summary
baseapp/abci_utils.go Updated SelectTxForProposal function to use tmtypes.ComputeProtoSizeForTxs for transaction size calculation. Added tmtypes package import.
baseapp/abci_utils_test.go Added new test case and updated existing ones to reflect changes in transaction size calculation. Introduced txDataSize variable and adjusted MaxTxBytes.
CHANGELOG.md Documented the fix for transaction byte size calculation in SelectTxForProposal, ensuring consistency with CometBFT.

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Review Status

Actionable comments generated: 1

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 875a71c and eb5eb16ea28268fabcc84a40f80df512e83658a8.
Files selected for processing (1)
  • baseapp/abci_utils.go (2 hunks)
Additional comments: 1
baseapp/abci_utils.go (1)
  • 10-16: The import of the tmtypes package from github.com/cometbft/cometbft/types is correctly added to use the ComputeProtoSizeForTxs function. Ensure that there are no existing functions within the Cosmos SDK that already provide the same functionality to avoid redundancy.

Comment on lines 369 to 375
}

func (ts *defaultTxSelector) SelectTxForProposal(_ context.Context, maxTxBytes, maxBlockGas uint64, memTx sdk.Tx, txBz []byte) bool {
txSize := uint64(len(txBz))
txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))

var txGasLimit uint64
if memTx != nil {
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The SelectTxForProposal function now uses tmtypes.ComputeProtoSizeForTxs to compute the size of transactions, which aligns with the cometbft calculation methods. However, there is a potential issue with the check for memTx != nil after the txSize has been calculated. If memTx is nil, the txGasLimit will remain uninitialized, potentially leading to incorrect behavior when adding the transaction to the proposal. This should be handled before attempting to cast memTx to GasTx.

- txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))
- 
- var txGasLimit uint64
- if memTx != nil {
+ txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))
+ var txGasLimit uint64
+ if memTx == nil {
+     return true // or handle the error appropriately
+ }

Commitable suggestion

IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation.

Suggested change
}
func (ts *defaultTxSelector) SelectTxForProposal(_ context.Context, maxTxBytes, maxBlockGas uint64, memTx sdk.Tx, txBz []byte) bool {
txSize := uint64(len(txBz))
txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))
var txGasLimit uint64
if memTx != nil {
}
func (ts *defaultTxSelector) SelectTxForProposal(_ context.Context, maxTxBytes, maxBlockGas uint64, memTx sdk.Tx, txBz []byte) bool {
txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))
var txGasLimit uint64
if memTx == nil {
return true // or handle the error appropriately
}

@julienrbrt julienrbrt changed the title fix: defaultTxSelector fix(baseapp): defaultTxSelector Nov 23, 2023
@facundomedica
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This looks good to me but I would love to see if there's a way to do this without having to use more Comet methods. Or maybe we do this now but we think about having a configurable "TxSize" per consensus engine

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Commits Files that changed from the base of the PR and between eb5eb16ea28268fabcc84a40f80df512e83658a8 and b09ea240e408e9520009436051c929f8930b4a5d.
Files selected for processing (1)
  • CHANGELOG.md (1 hunks)
Additional comments: 1
CHANGELOG.md (1)
  • 77-77:
    The changelog entry is clear and accurately reflects the changes made in the pull request.

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Commits Files that changed from the base of the PR and between 875a71c and d43715dd97848467dbe2f22769134a8483fcc64a.
Files selected for processing (2)
  • CHANGELOG.md (1 hunks)
  • baseapp/abci_utils.go (2 hunks)
Additional comments: 3
CHANGELOG.md (1)
baseapp/abci_utils.go (2)
  • 10-16:
    The import of tmtypes from github.com/cometbft/cometbft/types is correctly added to use ComputeProtoSizeForTxs.

  • 369-375:
    The issue with the check for memTx != nil after the txSize has been calculated is still present. If memTx is nil, the txGasLimit will remain uninitialized, potentially leading to incorrect behavior when adding the transaction to the proposal. This should be handled before attempting to cast memTx to GasTx.

@@ -368,7 +369,7 @@ func (ts *defaultTxSelector) Clear() {
}

func (ts *defaultTxSelector) SelectTxForProposal(_ context.Context, maxTxBytes, maxBlockGas uint64, memTx sdk.Tx, txBz []byte) bool {
txSize := uint64(len(txBz))
txSize := uint64(tmtypes.ComputeProtoSizeForTxs([]tmtypes.Tx{txBz}))
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Can you add a test?

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Sure, adding a case there works!

@@ -10,6 +10,7 @@ import (
cryptoenc "github.com/cometbft/cometbft/crypto/encoding"
cmtprotocrypto "github.com/cometbft/cometbft/proto/tendermint/crypto"
cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
tmtypes "github.com/cometbft/cometbft/types"
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Suggested change
tmtypes "github.com/cometbft/cometbft/types"
cmttypes "github.com/cometbft/cometbft/types"

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Commits Files that changed from the base of the PR and between 875a71c and 8f5efb1030020a61a74e9e145236e978c10b2db8.
Files selected for processing (2)
  • CHANGELOG.md (1 hunks)
  • baseapp/abci_utils.go (2 hunks)
Additional comments: 3
CHANGELOG.md (1)
baseapp/abci_utils.go (2)
  • 10-16:
    The import of cmttypes is correctly added to support the new transaction size calculation method.

  • 369-375:
    The change to use cmttypes.ComputeProtoSizeForTxs for calculating txSize is correctly implemented and aligns with CometBFT standards.

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Actionable comments generated: 1

Configuration used: CodeRabbit UI

Commits Files that changed from the base of the PR and between 875a71c and 029bb69b53caafd8153c73456afb3b0f51504cfd.
Files selected for processing (3)
  • CHANGELOG.md (1 hunks)
  • baseapp/abci_utils.go (2 hunks)
  • baseapp/abci_utils_test.go (5 hunks)
Additional comments: 7
baseapp/abci_utils.go (2)
  • 10-16:
    The import of cmttypes from "github.com/cometbft/cometbft/types" is correctly added to facilitate the use of ComputeProtoSizeForTxs.

  • 369-375:
    The change to calculate txSize using cmttypes.ComputeProtoSizeForTxs aligns with the CometBFT standards as described in the summary.

baseapp/abci_utils_test.go (5)
  • 3-8:
    The import alias cmttypes for the package github.com/cometbft/cometbft/types is correctly added to facilitate the use of the ComputeProtoSizeForTxs function.

  • 311-315:
    The test case now correctly calculates the transaction size using ComputeProtoSizeForTxs from the cmttypes package, aligning with the CometBFT standards.

  • 335-360: > Note: This review was outside the patches, so it was mapped to the patch with the greatest overlap. Original lines [335-367]

The test cases "small max tx bytes" and "small max gas" have been updated with new MaxTxBytes values to accommodate the changes in transaction size calculation.

  • 335-360: > Note: This review was outside the patches, so it was mapped to the patch with the greatest overlap. Original lines [342-368]

New test cases "large max tx bytes" and "large max tx bytes len calculation" have been added to validate the transaction size calculation for different MaxTxBytes limits.

  • 372-378:
    The loop in the test case ensures that the transaction selector is cleared each time, which is a good practice to avoid state leakage between iterations.

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We do not use the CometBFT ComputeProtoSizeForTxs API anywhere in the codebase. I'd like to better understand what and where the failures are for you. Note, we use len(txBz) as the tx in many places, e.g. gas computation.


EDIT: Apologies, I somehow missed the created issue for this. I understand now 👍

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Commits Files that changed from the base of the PR and between 029bb69b53caafd8153c73456afb3b0f51504cfd and ff7f1fa76a3d3a900c57844929a912b946f53923.
Files selected for processing (1)
  • CHANGELOG.md (1 hunks)

@@ -78,6 +78,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
* (client/server) [#18345](https://github.com/cosmos/cosmos-sdk/pull/18345) Consistently set viper prefix in client and server. It defaults for the binary name for both client and server.
* (simulation) [#17911](https://github.com/cosmos/cosmos-sdk/pull/17911) Fix all problems with executing command `make test-sim-custom-genesis-fast` for simulation test.
* (simulation) [#18196](https://github.com/cosmos/cosmos-sdk/pull/18196) Fix the problem of `validator set is empty after InitGenesis` in simulation test.
* (baseapp) [#18551](https://github.com/cosmos/cosmos-sdk/pull/18551) Fix SelectTxForProposal the calculation method of tx bytes size is inconsistent with CometBFT
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The changelog entry could be more descriptive by mentioning the specific method tmtypes.ComputeProtoSizeForTxs used for transaction size calculation to align with CometBFT standards.

@tac0turtle
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@LX-Xiang could you run make lint-fix then we can merge the pr

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Commits Files that changed from the base of the PR and between ff7f1fa76a3d3a900c57844929a912b946f53923 and 76b219bd1409f8f432f74a73cb0f1738adb29dbd.
Files selected for processing (1)
  • CHANGELOG.md (1 hunks)
Additional comments: 1
CHANGELOG.md (1)
  • 83-83: The changelog entry could be more descriptive by mentioning the specific method tmtypes.ComputeProtoSizeForTxs used for transaction size calculation to align with CometBFT standards.

@lllleven
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@tac0turtle i running make lint only one issues , but this issues not committed by me
image

@julienrbrt
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@tac0turtle i running make lint only one issues , but this issues not committed by me image

Yes, you should run make lint-fix:
image

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Commits Files that changed from the base of the PR and between 7aa5635 and e75ae01.
Files selected for processing (3)
  • CHANGELOG.md (1 hunks)
  • baseapp/abci_utils.go (2 hunks)
  • baseapp/abci_utils_test.go (5 hunks)
Files skipped from review due to trivial changes (1)
  • CHANGELOG.md
Additional comments: 8
baseapp/abci_utils.go (1)
  • 369-375: The use of ComputeProtoSizeForTxs from the cmttypes package for calculating transaction size is a good change for consistency with CometBFT standards. However, ensure that the ComputeProtoSizeForTxs function is thoroughly tested, especially since transaction size calculation is critical for block production.
baseapp/abci_utils_test.go (7)
  • 8-14: The import alias cmttypes has been removed in the diff summary, but it is still present in the hunk. Please ensure that the code reflects the intended changes.

  • 314-315: The update to use types.ComputeProtoSizeForTxs for calculating txDataSize is consistent with the summary and the hunk. Ensure that the types package provides the same functionality as the cmttypes package to avoid any unexpected behavior.

  • 350-356: The summary mentions the addition of a new test case "large max tx bytes len calculation," which seems to be a new scenario within the existing test cases. Ensure that this new scenario is adequately tested and that the expected behavior aligns with the changes made to the transaction byte size calculation.

  • 338-338: The MaxTxBytes value in the test case "small max gas" has been updated. Verify that this value is consistent with the expected transaction size after the changes to the transaction byte size calculation.

  • 346-346: The MaxTxBytes value in the test case "large max tx bytes" has been updated. Verify that this value is consistent with the expected transaction size after the changes to the transaction byte size calculation.

  • 354-354: The MaxTxBytes value in the test case "large max tx bytes len calculation" has been updated. Verify that this value is consistent with the expected transaction size after the changes to the transaction byte size calculation.

  • 366-366: The MaxTxBytes value in the test case "max gas and tx bytes" has been updated. Verify that this value is consistent with the expected transaction size after the changes to the transaction byte size calculation.

@lllleven
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@julienrbrt sorry, I didn't pay attention to this modification,I recommitted

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Commits Files that changed from the base of the PR and between e75ae01 and 600590f.
Files selected for processing (1)
  • CHANGELOG.md (1 hunks)

@julienrbrt julienrbrt changed the title fix(baseapp): defaultTxSelector fix(baseapp): Use CometBFT's ComputeProtoSizeForTxs in defaultTxSelector.SelectTxForProposal Nov 30, 2023
@julienrbrt julienrbrt added this pull request to the merge queue Nov 30, 2023
Merged via the queue into cosmos:main with commit d52bd92 Nov 30, 2023
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Block Proposal Failure(proposal block parts exceeds maximum block bytes)
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