fix(rollup-relayer): address underestimation of commitBatch gas in low-tx batches (#980)

Co-authored-by: colinlyguo <colinlyguo@users.noreply.github.com>

common/version/version.go

@@ -5,7 +5,7 @@ import (
 	"runtime/debug"
 )
 
-var tag = "v4.3.29"
+var tag = "v4.3.30"
 
 var commit = func() string {
 	if info, ok := debug.ReadBuildInfo(); ok {

rollup/internal/controller/watcher/batch_proposer.go

@@ -177,6 +177,7 @@ func (p *BatchProposer) proposeBatchChunks() ([]*orm.Chunk, *types.BatchMeta, er
 	}
 
 	// Add extra gas costs
+	totalL1CommitGas += 100000                       // constant to account for ops like _getAdmin, _implementation, _requireNotPaused, etc
 	totalL1CommitGas += 4 * 2100                     // 4 one-time cold sload for commitBatch
 	totalL1CommitGas += 20000                        // 1 time sstore
 	totalL1CommitGas += 21000                        // base fee for tx

rollup/internal/controller/watcher/batch_proposer_test.go

@@ -68,7 +68,7 @@ func testBatchProposerLimits(t *testing.T) {
 		{
 			name:                       "MaxL1CommitGasPerBatchIsFirstChunk",
 			maxChunkNum:                10,
-			maxL1CommitGas:             100000,
+			maxL1CommitGas:             200000,
 			maxL1CommitCalldataSize:    1000000,
 			batchTimeoutSec:            1000000000000,
 			expectedBatchesLen:         1,
@@ -199,6 +199,6 @@ func testBatchCommitGasAndCalldataSizeEstimation(t *testing.T) {
 		assert.Equal(t, types.ProvingTaskUnassigned, types.ProvingStatus(chunk.ProvingStatus))
 	}
 
-	assert.Equal(t, uint64(153916), batches[0].TotalL1CommitGas)
+	assert.Equal(t, uint64(253916), batches[0].TotalL1CommitGas)
 	assert.Equal(t, uint32(6033), batches[0].TotalL1CommitCalldataSize)
 }