ipld-eth-server/pkg/eth/test_helpers/chain_indexer.go

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package test_helpers
import (
"context"
"math/big"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/state"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/statediff"
"github.com/cerc-io/ipld-eth-server/v5/pkg/shared"
)
type IndexChainParams struct {
Blocks []*types.Block
Receipts []types.Receipts
StateCache state.Database
ChainConfig *params.ChainConfig
StateDiffParams statediff.Params
TotalDifficulty *big.Int
// Whether to skip indexing state nodes (state_cids, storage_cids)
SkipStateNodes bool
// Whether to skip indexing IPLD blocks
SkipIPLDs bool
}
func IndexChain(params IndexChainParams) error {
indexer := shared.SetupTestStateDiffIndexer(context.Background(), params.ChainConfig, Genesis.Hash())
builder := statediff.NewBuilder(params.StateCache)
// iterate over the blocks, generating statediff payloads, and transforming the data into Postgres
for i, block := range params.Blocks {
var args statediff.Args
var rcts types.Receipts
if i == 0 {
args = statediff.Args{
OldStateRoot: common.Hash{},
NewStateRoot: block.Root(),
BlockNumber: block.Number(),
BlockHash: block.Hash(),
}
} else {
args = statediff.Args{
OldStateRoot: params.Blocks[i-1].Root(),
NewStateRoot: block.Root(),
BlockNumber: block.Number(),
BlockHash: block.Hash(),
}
rcts = params.Receipts[i-1]
}
diff, err := builder.BuildStateDiffObject(args, params.StateDiffParams)
if err != nil {
return err
}
tx, err := indexer.PushBlock(block, rcts, params.TotalDifficulty)
if err != nil {
return err
}
if !params.SkipStateNodes {
for _, node := range diff.Nodes {
if err = indexer.PushStateNode(tx, node, block.Hash().String()); err != nil {
return err
}
}
}
if !params.SkipIPLDs {
for _, ipld := range diff.IPLDs {
if err := indexer.PushIPLD(tx, ipld); err != nil {
return err
}
}
}
if err = tx.Submit(err); err != nil {
return err
}
}
return nil
}