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block_vm.go
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block_vm.go
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// Copyright (C) 2019-2024, Ava Labs, Inc. All rights reserved.
// See the file LICENSE for licensing terms.
package metervm
import (
"context"
"github.com/prometheus/client_golang/prometheus"
"github.com/ava-labs/avalanchego/api/metrics"
"github.com/ava-labs/avalanchego/database"
"github.com/ava-labs/avalanchego/ids"
"github.com/ava-labs/avalanchego/snow"
"github.com/ava-labs/avalanchego/snow/consensus/snowman"
"github.com/ava-labs/avalanchego/snow/engine/common"
"github.com/ava-labs/avalanchego/snow/engine/snowman/block"
"github.com/ava-labs/avalanchego/utils/timer/mockable"
)
var (
_ block.ChainVM = (*blockVM)(nil)
_ block.BuildBlockWithContextChainVM = (*blockVM)(nil)
_ block.BatchedChainVM = (*blockVM)(nil)
_ block.StateSyncableVM = (*blockVM)(nil)
)
type blockVM struct {
block.ChainVM
buildBlockVM block.BuildBlockWithContextChainVM
batchedVM block.BatchedChainVM
ssVM block.StateSyncableVM
blockMetrics
clock mockable.Clock
}
func NewBlockVM(vm block.ChainVM) block.ChainVM {
buildBlockVM, _ := vm.(block.BuildBlockWithContextChainVM)
batchedVM, _ := vm.(block.BatchedChainVM)
ssVM, _ := vm.(block.StateSyncableVM)
return &blockVM{
ChainVM: vm,
buildBlockVM: buildBlockVM,
batchedVM: batchedVM,
ssVM: ssVM,
}
}
func (vm *blockVM) Initialize(
ctx context.Context,
chainCtx *snow.Context,
db database.Database,
genesisBytes,
upgradeBytes,
configBytes []byte,
toEngine chan<- common.Message,
fxs []*common.Fx,
appSender common.AppSender,
) error {
registerer := prometheus.NewRegistry()
err := vm.blockMetrics.Initialize(
vm.buildBlockVM != nil,
vm.batchedVM != nil,
vm.ssVM != nil,
"",
registerer,
)
if err != nil {
return err
}
optionalGatherer := metrics.NewOptionalGatherer()
multiGatherer := metrics.NewMultiGatherer()
if err := multiGatherer.Register("metervm", registerer); err != nil {
return err
}
if err := multiGatherer.Register("", optionalGatherer); err != nil {
return err
}
if err := chainCtx.Metrics.Register(multiGatherer); err != nil {
return err
}
chainCtx.Metrics = optionalGatherer
return vm.ChainVM.Initialize(ctx, chainCtx, db, genesisBytes, upgradeBytes, configBytes, toEngine, fxs, appSender)
}
func (vm *blockVM) BuildBlock(ctx context.Context) (snowman.Block, error) {
start := vm.clock.Time()
blk, err := vm.ChainVM.BuildBlock(ctx)
end := vm.clock.Time()
duration := float64(end.Sub(start))
if err != nil {
vm.blockMetrics.buildBlockErr.Observe(duration)
return nil, err
}
vm.blockMetrics.buildBlock.Observe(duration)
return &meterBlock{
Block: blk,
vm: vm,
}, nil
}
func (vm *blockVM) ParseBlock(ctx context.Context, b []byte) (snowman.Block, error) {
start := vm.clock.Time()
blk, err := vm.ChainVM.ParseBlock(ctx, b)
end := vm.clock.Time()
duration := float64(end.Sub(start))
if err != nil {
vm.blockMetrics.parseBlockErr.Observe(duration)
return nil, err
}
vm.blockMetrics.parseBlock.Observe(duration)
return &meterBlock{
Block: blk,
vm: vm,
}, nil
}
func (vm *blockVM) GetBlock(ctx context.Context, id ids.ID) (snowman.Block, error) {
start := vm.clock.Time()
blk, err := vm.ChainVM.GetBlock(ctx, id)
end := vm.clock.Time()
duration := float64(end.Sub(start))
if err != nil {
vm.blockMetrics.getBlockErr.Observe(duration)
return nil, err
}
vm.blockMetrics.getBlock.Observe(duration)
return &meterBlock{
Block: blk,
vm: vm,
}, nil
}
func (vm *blockVM) SetPreference(ctx context.Context, id ids.ID) error {
start := vm.clock.Time()
err := vm.ChainVM.SetPreference(ctx, id)
end := vm.clock.Time()
vm.blockMetrics.setPreference.Observe(float64(end.Sub(start)))
return err
}
func (vm *blockVM) LastAccepted(ctx context.Context) (ids.ID, error) {
start := vm.clock.Time()
lastAcceptedID, err := vm.ChainVM.LastAccepted(ctx)
end := vm.clock.Time()
vm.blockMetrics.lastAccepted.Observe(float64(end.Sub(start)))
return lastAcceptedID, err
}
func (vm *blockVM) GetBlockIDAtHeight(ctx context.Context, height uint64) (ids.ID, error) {
start := vm.clock.Time()
blockID, err := vm.ChainVM.GetBlockIDAtHeight(ctx, height)
end := vm.clock.Time()
vm.blockMetrics.getBlockIDAtHeight.Observe(float64(end.Sub(start)))
return blockID, err
}