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request handler and response screener for seed node api service

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This commit is contained in:
Ian Norden 2019-05-21 14:27:24 -05:00
parent 34393ffb3f
commit 1dc46640cf
18 changed files with 862 additions and 113 deletions
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2
db/migrations/00028_create_header_cids_table.sql
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@ -4,7 +4,7 @@ CREATE TABLE public.header_cids (
block_number BIGINT NOT NULL,
block_hash VARCHAR(66) NOT NULL,
cid TEXT NOT NULL,
uncle BOOLEAN NOT NULL,
final BOOLEAN NOT NULL,
UNIQUE (block_number, block_hash)
);

25
pkg/ipfs/api.go
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@ -18,7 +18,6 @@ package ipfs
import (
"context"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/rpc"
)
@ -29,26 +28,36 @@ const APIName = "vulcanizedb"
// APIVersion is the version of the state diffing service API
const APIVersion = "0.0.1"
// PublicSeedNodeAPI
// PublicSeedNodeAPI is the public api for the seed node
type PublicSeedNodeAPI struct {
snp SyncPublishAndServe
snp SyncPublishScreenAndServe
}
// NewPublicSeedNodeAPI
func NewPublicSeedNodeAPI(snp SyncPublishAndServe) *PublicSeedNodeAPI {
// NewPublicSeedNodeAPI creates a new PublicSeedNodeAPI with the provided underlying SyncPublishScreenAndServe process
func NewPublicSeedNodeAPI(snp SyncPublishScreenAndServe) *PublicSeedNodeAPI {
return &PublicSeedNodeAPI{
snp: snp,
}
}
// Subscribe is the public method to setup a subscription that fires off state-diff payloads as they are created
func (api *PublicSeedNodeAPI) Subscribe(ctx context.Context, payloadChan chan ResponsePayload, params *Params) (*rpc.Subscription, error) {
func (api *PublicSeedNodeAPI) Subscribe(ctx context.Context, payloadChanForTypeDefOnly chan ResponsePayload) (*rpc.Subscription, error) {
// ensure that the RPC connection supports subscriptions
notifier, supported := rpc.NotifierFromContext(ctx)
if !supported {
return nil, rpc.ErrNotificationsUnsupported
}
streamFilters := StreamFilters{}
streamFilters.HeaderFilter.FinalOnly = true
streamFilters.TrxFilter.Src = []string{"0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe"}
streamFilters.TrxFilter.Dst = []string{"0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe"}
streamFilters.ReceiptFilter.Topic0s = []string{
"0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef",
"0x930a61a57a70a73c2a503615b87e2e54fe5b9cdeacda518270b852296ab1a377",
}
streamFilters.StateFilter.Addresses = []string{"0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe"}
streamFilters.StorageFilter.Off = true
// create subscription and start waiting for statediff events
rpcSub := notifier.CreateSubscription()
@ -56,7 +65,7 @@ func (api *PublicSeedNodeAPI) Subscribe(ctx context.Context, payloadChan chan Re
// subscribe to events from the state diff service
payloadChannel := make(chan ResponsePayload)
quitChan := make(chan bool)
api.snp.Subscribe(rpcSub.ID, payloadChannel, quitChan, params)
go api.snp.Subscribe(rpcSub.ID, payloadChannel, quitChan, &streamFilters)
// loop and await state diff payloads and relay them to the subscriber with then notifier
for {
@ -79,4 +88,4 @@ func (api *PublicSeedNodeAPI) Subscribe(ctx context.Context, payloadChan chan Re
}()
return rpcSub, nil
}
}

1
pkg/ipfs/api_test.go Normal file
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@ -0,0 +1 @@
package ipfs

4
pkg/ipfs/converter.go
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@ -73,8 +73,8 @@ func (pc *Converter) Convert(payload statediff.Payload) (*IPLDPayload, error) {
return nil, err
}
txMeta := &TrxMetaData{
To: handleNullAddr(trx.To()),
From: from.Hex(),
Dst: handleNullAddr(trx.To()),
Src: from.Hex(),
}
// txMeta will have same index as its corresponding trx in the convertedPayload.BlockBody
convertedPayload.TrxMetaData = append(convertedPayload.TrxMetaData, txMeta)

154
pkg/ipfs/fetcher.go
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@ -19,36 +19,174 @@ package ipfs
import (
"context"
"github.com/ethereum/go-ethereum/common"
"github.com/ipfs/go-block-format"
"github.com/ipfs/go-blockservice"
"github.com/ipfs/go-cid"
log "github.com/sirupsen/logrus"
)
// IPLDFetcher is the underlying struct which supports a IPLD fetching interface
type IPLDFetcher struct {
// IPLDFethcer is an interface for fetching IPLDs
type IPLDFetcher interface {
FetchCIDs(cids cidWrapper) (*ipfsBlockWrapper, error)
}
// EthIPLDFetcher is used to fetch ETH IPLD objects from IPFS
type EthIPLDFetcher struct {
BlockService blockservice.BlockService
}
// NewIPLDFetcher creates a pointer to a new IPLDFetcher
func NewIPLDFetcher(ipfsPath string) (*IPLDFetcher, error) {
func NewIPLDFetcher(ipfsPath string) (*EthIPLDFetcher, error) {
blockService, err := InitIPFSBlockService(ipfsPath)
if err != nil {
return nil, err
}
return &IPLDFetcher{
return &EthIPLDFetcher{
BlockService: blockService,
}, nil
}
// Fetch is used to fetch a single block of IPFS data by cid
func (f *IPLDFetcher) Fetch(cid cid.Cid) (blocks.Block, error) {
// FetchCIDs is the exported method for fetching and returning all the cids passed in a cidWrapper
func (f *EthIPLDFetcher) FetchCIDs(cids cidWrapper) (*ipfsBlockWrapper, error) {
blocks := &ipfsBlockWrapper{
Headers: make([]blocks.Block, 0),
Transactions: make([]blocks.Block, 0),
Receipts: make([]blocks.Block, 0),
StateNodes: make(map[common.Hash]blocks.Block),
StorageNodes: make(map[common.Hash]map[common.Hash]blocks.Block),
}
err := f.fetchHeaders(cids, blocks)
if err != nil {
return nil, err
}
err = f.fetchTrxs(cids, blocks)
if err != nil {
return nil, err
}
err = f.fetchRcts(cids, blocks)
if err != nil {
return nil, err
}
err = f.fetchStorage(cids, blocks)
if err != nil {
return nil, err
}
err = f.fetchState(cids, blocks)
if err != nil {
return nil, err
}
return blocks, nil
}
// fetchHeaders fetches headers
// It uses the f.fetchBatch method
func (f *EthIPLDFetcher) fetchHeaders(cids cidWrapper, blocks *ipfsBlockWrapper) error {
headerCids := make([]cid.Cid, 0, len(cids.Headers))
for _, c := range cids.Headers {
dc, err := cid.Decode(c)
if err != nil {
return err
}
headerCids = append(headerCids, dc)
}
blocks.Headers = f.fetchBatch(headerCids)
if len(blocks.Headers) != len(headerCids) {
log.Errorf("ipfs fetcher: number of header blocks returned (%d) does not match number expected (%d)", len(blocks.Headers), len(headerCids))
}
return nil
}
// fetchTrxs fetches transactions
// It uses the f.fetchBatch method
func (f *EthIPLDFetcher) fetchTrxs(cids cidWrapper, blocks *ipfsBlockWrapper) error {
trxCids := make([]cid.Cid, 0, len(cids.Transactions))
for _, c := range cids.Transactions {
dc, err := cid.Decode(c)
if err != nil {
return err
}
trxCids = append(trxCids, dc)
}
blocks.Transactions = f.fetchBatch(trxCids)
if len(blocks.Transactions) != len(trxCids) {
log.Errorf("ipfs fetcher: number of transaction blocks returned (%d) does not match number expected (%d)", len(blocks.Transactions), len(trxCids))
}
return nil
}
// fetchRcts fetches receipts
// It uses the f.fetchBatch method
func (f *EthIPLDFetcher) fetchRcts(cids cidWrapper, blocks *ipfsBlockWrapper) error {
rctCids := make([]cid.Cid, 0, len(cids.Receipts))
for _, c := range cids.Receipts {
dc, err := cid.Decode(c)
if err != nil {
return err
}
rctCids = append(rctCids, dc)
}
blocks.Receipts = f.fetchBatch(rctCids)
if len(blocks.Receipts) != len(rctCids) {
log.Errorf("ipfs fetcher: number of receipt blocks returned (%d) does not match number expected (%d)", len(blocks.Receipts), len(rctCids))
}
return nil
}
// fetchState fetches state nodes
// It uses the single f.fetch method instead of the batch fetch, because it
// needs to maintain the data's relation to state keys
func (f *EthIPLDFetcher) fetchState(cids cidWrapper, blocks *ipfsBlockWrapper) error {
for _, stateNode := range cids.StateNodes {
if stateNode.CID == "" || stateNode.Key == "" {
continue
}
dc, err := cid.Decode(stateNode.CID)
if err != nil {
return err
}
block, err := f.fetch(dc)
if err != nil {
return err
}
blocks.StateNodes[common.HexToHash(stateNode.Key)] = block
}
return nil
}
// fetchStorage fetches storage nodes
// It uses the single f.fetch method instead of the batch fetch, because it
// needs to maintain the data's relation to state and storage keys
func (f *EthIPLDFetcher) fetchStorage(cids cidWrapper, blocks *ipfsBlockWrapper) error {
for _, storageNode := range cids.StorageNodes {
if storageNode.CID == "" || storageNode.Key == "" || storageNode.StateKey == "" {
continue
}
dc, err := cid.Decode(storageNode.CID)
if err != nil {
return err
}
block, err := f.fetch(dc)
if err != nil {
return err
}
blocks.StorageNodes[common.HexToHash(storageNode.StateKey)][common.HexToHash(storageNode.Key)] = block
}
return nil
}
// fetch is used to fetch a single cid
func (f *EthIPLDFetcher) fetch(cid cid.Cid) (blocks.Block, error) {
return f.BlockService.GetBlock(context.Background(), cid)
}
// FetchBatch is used to fetch a batch of IPFS data blocks by cid
// fetchBatch is used to fetch a batch of IPFS data blocks by cid
// There is no guarantee all are fetched, and no error in such a case, so
// downstream we will need to confirm which CIDs were fetched in the result set
func (f *IPLDFetcher) FetchBatch(cids []cid.Cid) []blocks.Block {
func (f *EthIPLDFetcher) fetchBatch(cids []cid.Cid) []blocks.Block {
fetchedBlocks := make([]blocks.Block, 0, len(cids))
blockChan := f.BlockService.GetBlocks(context.Background(), cids)
for block := range blockChan {

13
pkg/ipfs/helpers.go
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@ -19,6 +19,8 @@ package ipfs
import (
"context"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ipfs/go-blockservice"
"github.com/ipfs/go-ipfs/core"
"github.com/ipfs/go-ipfs/repo/fsrepo"
@ -41,3 +43,14 @@ func InitIPFSBlockService(ipfsPath string) (blockservice.BlockService, error) {
}
return ipfsNode.Blocks, nil
}
// AddressToKey hashes an address
func AddressToKey(address common.Address) common.Hash {
return crypto.Keccak256Hash(address[:])
}
// HexToKey hashes a hex (0x leading) string
func HexToKey(hex string) common.Hash {
addr := common.HexToAddress(hex)
return crypto.Keccak256Hash(addr[:])
}

2
pkg/ipfs/publisher.go
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@ -209,7 +209,7 @@ func (pub *Publisher) publishStorageNodes(storageNodes map[common.Hash][]Storage
return nil, errors.New("single CID expected to be returned for storage leaf")
}
storageLeafCids[addr] = append(storageLeafCids[addr], StorageNodeCID{
Key: node.Key,
Key: node.Key.Hex(),
CID: storageNodeCid[0],
Leaf: node.Leaf,
})

19
pkg/ipfs/repository.go
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@ -14,7 +14,6 @@
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// Still seeing some errors from tx and storage indexing processes... due to fk constraints being broken
package ipfs
import (
@ -24,6 +23,8 @@ import (
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
)
// Still seeing some errors from tx and storage indexing processes... due to fk constraints being broken
// CIDRepository is an interface for indexing CIDPayloads
type CIDRepository interface {
Index(cidPayload *CIDPayload) error
@ -70,17 +71,17 @@ func (repo *Repository) Index(cidPayload *CIDPayload) error {
func (repo *Repository) indexHeaderCID(tx *sqlx.Tx, cid, blockNumber, hash string) (int64, error) {
var headerID int64
err := tx.QueryRowx(`INSERT INTO public.header_cids (block_number, block_hash, cid, uncle) VALUES ($1, $2, $3, $4)
ON CONFLICT (block_number, block_hash) DO UPDATE SET (cid, uncle) = ($3, $4)
err := tx.QueryRowx(`INSERT INTO public.header_cids (block_number, block_hash, cid, final) VALUES ($1, $2, $3, $4)
ON CONFLICT (block_number, block_hash) DO UPDATE SET (cid, final) = ($3, $4)
RETURNING id`,
blockNumber, hash, cid, false).Scan(&headerID)
blockNumber, hash, cid, true).Scan(&headerID)
return headerID, err
}
func (repo *Repository) indexUncleCID(tx *sqlx.Tx, cid, blockNumber, hash string) error {
_, err := tx.Queryx(`INSERT INTO public.header_cids (block_number, block_hash, cid, uncle) VALUES ($1, $2, $3, $4)
ON CONFLICT (block_number, block_hash) DO UPDATE SET (cid, uncle) = ($3, $4)`,
blockNumber, hash, cid, true)
_, err := tx.Queryx(`INSERT INTO public.header_cids (block_number, block_hash, cid, final) VALUES ($1, $2, $3, $4)
ON CONFLICT (block_number, block_hash) DO UPDATE SET (cid, final) = ($3, $4)`,
blockNumber, hash, cid, false)
return err
}
@ -91,7 +92,7 @@ func (repo *Repository) indexTransactionAndReceiptCIDs(payload *CIDPayload, head
err := tx.QueryRowx(`INSERT INTO public.transaction_cids (header_id, tx_hash, cid, dst, src) VALUES ($1, $2, $3, $4, $5)
ON CONFLICT (header_id, tx_hash) DO UPDATE SET (cid, dst, src) = ($3, $4, $5)
RETURNING id`,
headerID, hash.Hex(), trxCidMeta.CID, trxCidMeta.To, trxCidMeta.From).Scan(&txID)
headerID, hash.Hex(), trxCidMeta.CID, trxCidMeta.Dst, trxCidMeta.Src).Scan(&txID)
if err != nil {
tx.Rollback()
return err
@ -140,6 +141,6 @@ func (repo *Repository) indexStateAndStorageCIDs(payload *CIDPayload, headerID i
func (repo *Repository) indexStorageCID(tx *sqlx.Tx, storageCID StorageNodeCID, stateID int64) error {
_, err := repo.db.Exec(`INSERT INTO public.storage_cids (state_id, storage_key, cid, leaf) VALUES ($1, $2, $3, $4)
ON CONFLICT (state_id, storage_key) DO UPDATE SET (cid, leaf) = ($3, $4)`,
stateID, storageCID.Key.Hex(), storageCID.CID, storageCID.Leaf)
stateID, storageCID.Key, storageCID.CID, storageCID.Leaf)
return err
}

86
pkg/ipfs/resolver.go Normal file
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@ -0,0 +1,86 @@
// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ipfs
import (
"github.com/ethereum/go-ethereum/common"
"github.com/ipfs/go-block-format"
)
type IPLDResolver interface {
ResolveIPLDs(ipfsBlocks ipfsBlockWrapper) (*ResponsePayload, error)
}
type EthIPLDResolver struct{}
func NewIPLDResolver() *EthIPLDResolver {
return &EthIPLDResolver{}
}
func (eir *EthIPLDResolver) ResolveIPLDs(ipfsBlocks ipfsBlockWrapper) (*ResponsePayload, error) {
response := new(ResponsePayload)
eir.resolveHeaders(ipfsBlocks.Headers, response)
eir.resolveTransactions(ipfsBlocks.Transactions, response)
eir.resolveReceipts(ipfsBlocks.Receipts, response)
eir.resolveState(ipfsBlocks.StateNodes, response)
eir.resolveStorage(ipfsBlocks.StorageNodes, response)
return response, nil
}
func (eir *EthIPLDResolver) resolveHeaders(blocks []blocks.Block, response *ResponsePayload) {
for _, block := range blocks {
raw := block.RawData()
response.HeadersRlp = append(response.HeadersRlp, raw)
}
}
func (eir *EthIPLDResolver) resolveTransactions(blocks []blocks.Block, response *ResponsePayload) {
for _, block := range blocks {
raw := block.RawData()
response.TransactionsRlp = append(response.TransactionsRlp, raw)
}
}
func (eir *EthIPLDResolver) resolveReceipts(blocks []blocks.Block, response *ResponsePayload) {
for _, block := range blocks {
raw := block.RawData()
response.ReceiptsRlp = append(response.ReceiptsRlp, raw)
}
}
func (eir *EthIPLDResolver) resolveState(blocks map[common.Hash]blocks.Block, response *ResponsePayload) {
if response.StateNodesRlp == nil {
response.StateNodesRlp = make(map[common.Hash][]byte)
}
for key, block := range blocks {
raw := block.RawData()
response.StateNodesRlp[key] = raw
}
}
func (eir *EthIPLDResolver) resolveStorage(blocks map[common.Hash]map[common.Hash]blocks.Block, response *ResponsePayload) {
if response.StateNodesRlp == nil {
response.StorageNodesRlp = make(map[common.Hash]map[common.Hash][]byte)
}
for stateKey, storageBlocks := range blocks {
for storageKey, storageVal := range storageBlocks {
raw := storageVal.RawData()
response.StorageNodesRlp[stateKey][storageKey] = raw
}
}
}

195
pkg/ipfs/retreiver.go
View File

@ -15,3 +15,198 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ipfs
import (
"github.com/jmoiron/sqlx"
"github.com/lib/pq"
"github.com/vulcanize/vulcanizedb/pkg/datastore/postgres"
)
type CIDRetriever interface {
RetrieveCIDs(streamFilters StreamFilters) ([]cidWrapper, error)
}
type EthCIDRetriever struct {
db *postgres.DB
}
func NewCIDRetriever(db *postgres.DB) *EthCIDRetriever {
return &EthCIDRetriever{
db: db,
}
}
func (ecr *EthCIDRetriever) GetLastBlockNumber() (int64, error) {
var blockNumber int64
err := ecr.db.Get(&blockNumber, "SELECT block_number FROM header_cids ORDER BY block_number DESC LIMIT 1 ")
return blockNumber, err
}
func (ecr *EthCIDRetriever) RetrieveCIDs(streamFilters StreamFilters) ([]cidWrapper, error) {
var endingBlock int64
var err error
if streamFilters.EndingBlock <= 0 || streamFilters.EndingBlock <= streamFilters.StartingBlock {
endingBlock, err = ecr.GetLastBlockNumber()
if err != nil {
return nil, err
}
}
cids := make([]cidWrapper, 0, endingBlock+1-streamFilters.StartingBlock)
tx, err := ecr.db.Beginx()
if err != nil {
return nil, err
}
for i := streamFilters.StartingBlock; i <= endingBlock; i++ {
cw := &cidWrapper{
BlockNumber: i,
Headers: make([]string, 0),
Transactions: make([]string, 0),
Receipts: make([]string, 0),
StateNodes: make([]StateNodeCID, 0),
StorageNodes: make([]StorageNodeCID, 0),
}
if !streamFilters.HeaderFilter.Off {
err = ecr.retrieveHeaderCIDs(tx, streamFilters, cw, i)
if err != nil {
tx.Rollback()
return nil, err
}
}
var trxIds []int64
if !streamFilters.TrxFilter.Off {
trxIds, err = ecr.retrieveTrxCIDs(tx, streamFilters, cw, i)
if err != nil {
tx.Rollback()
return nil, err
}
}
if !streamFilters.ReceiptFilter.Off {
err = ecr.retrieveRctCIDs(tx, streamFilters, cw, i, trxIds)
if err != nil {
tx.Rollback()
return nil, err
}
}
if !streamFilters.StateFilter.Off {
err = ecr.retrieveStateCIDs(tx, streamFilters, cw, i)
if err != nil {
tx.Rollback()
return nil, err
}
}
if !streamFilters.StorageFilter.Off {
err = ecr.retrieveStorageCIDs(tx, streamFilters, cw, i)
if err != nil {
tx.Rollback()
return nil, err
}
}
cids = append(cids, *cw)
}
return cids, err
}
func (ecr *EthCIDRetriever) retrieveHeaderCIDs(tx *sqlx.Tx, streamFilters StreamFilters, cids *cidWrapper, blockNumber int64) error {
var pgStr string
if streamFilters.HeaderFilter.FinalOnly {
pgStr = `SELECT cid FROM header_cids
WHERE block_number = $1
AND final IS TRUE`
} else {
pgStr = `SELECT cid FROM header_cids
WHERE block_number = $1`
}
return tx.Select(cids.Headers, pgStr, blockNumber)
}
func (ecr *EthCIDRetriever) retrieveTrxCIDs(tx *sqlx.Tx, streamFilters StreamFilters, cids *cidWrapper, blockNumber int64) ([]int64, error) {
args := make([]interface{}, 0, 3)
type result struct {
Id int64 `db:"id"`
Cid string `db:"cid"`
}
results := make([]result, 0)
pgStr := `SELECT transaction_cids.id, transaction_cids.cid FROM transaction_cids INNER JOIN header_cids ON (transaction_cids.header_id = header_cids.id)
WHERE header_cids.block_number = $1`
args = append(args, blockNumber)
if len(streamFilters.TrxFilter.Dst) > 0 {
pgStr += ` AND transaction_cids.dst = ANY($2::VARCHAR(66)[])`
args = append(args, pq.Array(streamFilters.TrxFilter.Dst))
}
if len(streamFilters.TrxFilter.Src) > 0 {
pgStr += ` AND transaction_cids.src = ANY($3::VARCHAR(66)[])`
args = append(args, pq.Array(streamFilters.TrxFilter.Src))
}
err := tx.Select(results, pgStr, args...)
if err != nil {
return nil, err
}
ids := make([]int64, 0)
for _, res := range results {
cids.Transactions = append(cids.Transactions, res.Cid)
ids = append(ids, res.Id)
}
return ids, nil
}
func (ecr *EthCIDRetriever) retrieveRctCIDs(tx *sqlx.Tx, streamFilters StreamFilters, cids *cidWrapper, blockNumber int64, trxIds []int64) error {
args := make([]interface{}, 0, 2)
pgStr := `SELECT receipt_cids.cid FROM receipt_cids, transaction_cids, header_cids
WHERE receipt_cids.tx_id = transaction_cids.id
AND transaction_cids.header_id = header_cids.id
AND header_cids.block_number = $1`
args = append(args, blockNumber)
if len(streamFilters.ReceiptFilter.Topic0s) > 0 {
pgStr += ` AND (receipt_cids.topic0s && $2::VARCHAR(66)[]`
args = append(args, pq.Array(streamFilters.ReceiptFilter.Topic0s))
}
if len(trxIds) > 0 {
pgStr += ` OR receipt_cids.tx_id = ANY($3::INTEGER[]))`
args = append(args, pq.Array(trxIds))
} else {
pgStr += `)`
}
return tx.Select(cids.Receipts, pgStr, args...)
}
func (ecr *EthCIDRetriever) retrieveStateCIDs(tx *sqlx.Tx, streamFilters StreamFilters, cids *cidWrapper, blockNumber int64) error {
args := make([]interface{}, 0, 2)
pgStr := `SELECT state_cids.cid, state_cids.state_key FROM state_cids INNER JOIN header_cids ON (state_cids.header_id = header_cids.id)
WHERE header_cids.block_number = $1`
args = append(args, blockNumber)
addrLen := len(streamFilters.StateFilter.Addresses)
if addrLen > 0 {
keys := make([]string, 0, addrLen)
for _, addr := range streamFilters.StateFilter.Addresses {
keys = append(keys, HexToKey(addr).Hex())
}
pgStr += ` AND state_cids.state_key = ANY($2::VARCHAR(66)[])`
args = append(args, pq.Array(keys))
}
return tx.Select(cids.StateNodes, pgStr, args...)
}
func (ecr *EthCIDRetriever) retrieveStorageCIDs(tx *sqlx.Tx, streamFilters StreamFilters, cids *cidWrapper, blockNumber int64) error {
args := make([]interface{}, 0, 3)
pgStr := `SELECT storage_cids.cid, state_cids.state_key, storage_cids.storage_key FROM storage_cids, state_cids, header_cids
WHERE storage_cids.state_id = state_cids.id
AND state_cids.header_id = header_cids.id
AND header_cids.block_number = $1`
args = append(args, blockNumber)
addrLen := len(streamFilters.StorageFilter.Addresses)
if addrLen > 0 {
keys := make([]string, 0, addrLen)
for _, addr := range streamFilters.StorageFilter.Addresses {
keys = append(keys, HexToKey(addr).Hex())
}
pgStr += ` AND state_cids.state_key = ANY($2::VARCHAR(66)[])`
args = append(args, pq.Array(keys))
}
if len(streamFilters.StorageFilter.StorageKeys) > 0 {
pgStr += ` AND storage_cids.storage_key = ANY($3::VARCHAR(66)[])`
args = append(args, pq.Array(streamFilters.StorageFilter.StorageKeys))
}
return tx.Select(cids.StorageNodes, pgStr, args...)
}
// ADD IF LEAF ONLY!!

1
pkg/ipfs/retreiver_test.go Normal file
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@ -0,0 +1 @@
package ipfs

218
pkg/ipfs/screener.go Normal file
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@ -0,0 +1,218 @@
// VulcanizeDB
// Copyright © 2019 Vulcanize
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package ipfs
import (
"bytes"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/rlp"
)
// ResponseScreener is the inteface used to screen eth data and package appropriate data into a response payload
type ResponseScreener interface {
ScreenResponse(streamFilters *StreamFilters, payload IPLDPayload) (*ResponsePayload, error)
}
// Screener is the underlying struct for the ReponseScreener interface
type Screener struct{}
// NewResponseScreener creates a new Screener satisfyign the ReponseScreener interface
func NewResponseScreener() *Screener {
return &Screener{}
}
// ScreenResponse is used to filter through eth data to extract and package requested data into a ResponsePayload
func (s *Screener) ScreenResponse(streamFilters *StreamFilters, payload IPLDPayload) (*ResponsePayload, error) {
response := new(ResponsePayload)
err := s.filterHeaders(streamFilters, response, payload)
if err != nil {
return nil, err
}
txHashes, err := s.filterTransactions(streamFilters, response, payload)
if err != nil {
return nil, err
}
err = s.filerReceipts(streamFilters, response, payload, txHashes)
if err != nil {
return nil, err
}
err = s.filterState(streamFilters, response, payload)
if err != nil {
return nil, err
}
err = s.filterStorage(streamFilters, response, payload)
if err != nil {
return nil, err
}
return response, nil
}
func (s *Screener) filterHeaders(streamFilters *StreamFilters, response *ResponsePayload, payload IPLDPayload) error {
if !streamFilters.HeaderFilter.Off && checkRange(streamFilters.StartingBlock, streamFilters.EndingBlock, payload.BlockNumber.Int64()) {
response.HeadersRlp = append(response.HeadersRlp, payload.HeaderRLP)
if !streamFilters.HeaderFilter.FinalOnly {
for _, uncle := range payload.BlockBody.Uncles {
uncleRlp, err := rlp.EncodeToBytes(uncle)
if err != nil {
return err
}
response.UnclesRlp = append(response.UnclesRlp, uncleRlp)
}
}
}
return nil
}
func checkRange(start, end, actual int64) bool {
if (end <= 0 || end >= actual) && start <= actual {
return true
}
return false
}
func (s *Screener) filterTransactions(streamFilters *StreamFilters, response *ResponsePayload, payload IPLDPayload) ([]common.Hash, error) {
trxHashes := make([]common.Hash, 0, len(payload.BlockBody.Transactions))
if !streamFilters.TrxFilter.Off && checkRange(streamFilters.StartingBlock, streamFilters.EndingBlock, payload.BlockNumber.Int64()) {
for i, trx := range payload.BlockBody.Transactions {
if checkTransactions(streamFilters.TrxFilter.Src, streamFilters.TrxFilter.Dst, payload.TrxMetaData[i].Src, payload.TrxMetaData[i].Dst) {
trxBuffer := new(bytes.Buffer)
err := trx.EncodeRLP(trxBuffer)
if err != nil {
return nil, err
}
trxHashes = append(trxHashes, trx.Hash())
response.TransactionsRlp = append(response.TransactionsRlp, trxBuffer.Bytes())
}
}
}
return trxHashes, nil
}
func checkTransactions(wantedSrc, wantedDst []string, actualSrc, actualDst string) bool {
// If we aren't filtering for any addresses, every transaction is a go
if len(wantedDst) == 0 && len(wantedSrc) == 0 {
return true
}
for _, src := range wantedSrc {
if src == actualSrc {
return true
}
}
for _, dst := range wantedDst {
if dst == actualDst {
return true
}
}
return false
}
func (s *Screener) filerReceipts(streamFilters *StreamFilters, response *ResponsePayload, payload IPLDPayload, trxHashes []common.Hash) error {
if !streamFilters.ReceiptFilter.Off && checkRange(streamFilters.StartingBlock, streamFilters.EndingBlock, payload.BlockNumber.Int64()) {
for i, receipt := range payload.Receipts {
if checkReceipts(receipt, streamFilters.ReceiptFilter.Topic0s, payload.ReceiptMetaData[i].Topic0s, trxHashes) {
receiptBuffer := new(bytes.Buffer)
err := receipt.EncodeRLP(receiptBuffer)
if err != nil {
return err
}
response.ReceiptsRlp = append(response.ReceiptsRlp, receiptBuffer.Bytes())
}
}
}
return nil
}
func checkReceipts(rct *types.Receipt, wantedTopics, actualTopics []string, wantedTrxHashes []common.Hash) bool {
// If we aren't filtering for any topics, all topics are a go
if len(wantedTopics) == 0 {
return true
}
for _, wantedTrxHash := range wantedTrxHashes {
if bytes.Equal(wantedTrxHash.Bytes(), rct.TxHash.Bytes()) {
return true
}
}
for _, wantedTopic := range wantedTopics {
for _, actualTopic := range actualTopics {
if wantedTopic == actualTopic {
return true
}
}
}
return false
}
func (s *Screener) filterState(streamFilters *StreamFilters, response *ResponsePayload, payload IPLDPayload) error {
response.StateNodesRlp = make(map[common.Hash][]byte)
if !streamFilters.StateFilter.Off && checkRange(streamFilters.StartingBlock, streamFilters.EndingBlock, payload.BlockNumber.Int64()) {
keyFilters := make([]common.Hash, 0, len(streamFilters.StateFilter.Addresses))
for _, addr := range streamFilters.StateFilter.Addresses {
keyFilter := AddressToKey(common.HexToAddress(addr))
keyFilters = append(keyFilters, keyFilter)
}
for key, stateNode := range payload.StateNodes {
if checkNodeKeys(keyFilters, key) {
if stateNode.Leaf || streamFilters.StateFilter.IntermediateNodes {
response.StateNodesRlp[key] = stateNode.Value
}
}
}
}
return nil
}
func checkNodeKeys(wantedKeys []common.Hash, actualKey common.Hash) bool {
// If we aren't filtering for any specific keys, all nodes are a go
if len(wantedKeys) == 0 {
return true
}
for _, key := range wantedKeys {
if bytes.Equal(key.Bytes(), actualKey.Bytes()) {
return true
}
}
return false
}
func (s *Screener) filterStorage(streamFilters *StreamFilters, response *ResponsePayload, payload IPLDPayload) error {
if !streamFilters.StorageFilter.Off && checkRange(streamFilters.StartingBlock, streamFilters.EndingBlock, payload.BlockNumber.Int64()) {
stateKeyFilters := make([]common.Hash, 0, len(streamFilters.StorageFilter.Addresses))
for _, addr := range streamFilters.StorageFilter.Addresses {
keyFilter := AddressToKey(common.HexToAddress(addr))
stateKeyFilters = append(stateKeyFilters, keyFilter)
}
storageKeyFilters := make([]common.Hash, 0, len(streamFilters.StorageFilter.StorageKeys))
for _, store := range streamFilters.StorageFilter.StorageKeys {
keyFilter := HexToKey(store)
storageKeyFilters = append(storageKeyFilters, keyFilter)
}
for stateKey, storageNodes := range payload.StorageNodes {
if checkNodeKeys(stateKeyFilters, stateKey) {
response.StorageNodesRlp[stateKey] = make(map[common.Hash][]byte)
for _, storageNode := range storageNodes {
if checkNodeKeys(storageKeyFilters, storageNode.Key) {
response.StorageNodesRlp[stateKey][storageNode.Key] = storageNode.Value
}
}
}
}
}
return nil
}

1
pkg/ipfs/screener_test.go Normal file
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@ -0,0 +1 @@
package ipfs

124
pkg/ipfs/service.go
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@ -32,22 +32,22 @@ import (
const payloadChanBufferSize = 800 // 1/10th max eth sub buffer size
// SyncAndPublish is an interface for streaming, converting to IPLDs, publishing, and indexing all Ethereum data
// This is the top-level interface used by the syncAndPublish command
type SyncPublishAndServe interface {
// SyncPublishScreenAndServe is an interface for streaming, converting to IPLDs, publishing,
// indexing all Ethereum data screening this data, and serving it up to subscribed clients
type SyncPublishScreenAndServe interface {
// APIs(), Protocols(), Start() and Stop()
node.Service
// Main event loop for syncAndPublish processes
SyncAndPublish(wg *sync.WaitGroup, forwardPayloadChan chan<- IPLDPayload, forwardQuitchan chan<- bool) error
// Main event loop for handling client pub-sub
Serve(wg *sync.WaitGroup, receivePayloadChan <-chan IPLDPayload, receiveQuitchan <-chan bool)
ScreenAndServe(wg *sync.WaitGroup, receivePayloadChan <-chan IPLDPayload, receiveQuitchan <-chan bool)
// Method to subscribe to receive state diff processing output
Subscribe(id rpc.ID, sub chan<- ResponsePayload, quitChan chan<- bool, params *Params)
Subscribe(id rpc.ID, sub chan<- ResponsePayload, quitChan chan<- bool, streamFilters *StreamFilters)
// Method to unsubscribe from state diff processing
Unsubscribe(id rpc.ID) error
}
// Processor is the underlying struct for the SyncAndPublish interface
// Service is the underlying struct for the SyncAndPublish interface
type Service struct {
// Used to sync access to the Subscriptions
sync.Mutex
@ -59,6 +59,14 @@ type Service struct {
Publisher IPLDPublisher
// Interface for indexing the CIDs of the published ETH-IPLDs in Postgres
Repository CIDRepository
// Interface for filtering and serving data according to subscribed clients according to their specification
Screener ResponseScreener
// Interface for fetching ETH-IPLD objects from IPFS
Fetcher IPLDFetcher
// Interface for searching and retrieving CIDs from Postgres index
Retriever CIDRetriever
// Interface for resolving ipfs blocks to their data types
Resolver IPLDResolver
// Chan the processor uses to subscribe to state diff payloads from the Streamer
PayloadChan chan statediff.Payload
// Used to signal shutdown of the service
@ -68,18 +76,27 @@ type Service struct {
}
// NewIPFSProcessor creates a new Processor interface using an underlying Processor struct
func NewIPFSProcessor(ipfsPath string, db *postgres.DB, ethClient core.EthClient, rpcClient core.RpcClient, qc chan bool) (SyncPublishAndServe, error) {
func NewIPFSProcessor(ipfsPath string, db *postgres.DB, ethClient core.EthClient, rpcClient core.RpcClient, qc chan bool) (SyncPublishScreenAndServe, error) {
publisher, err := NewIPLDPublisher(ipfsPath)
if err != nil {
return nil, err
}
fetcher, err := NewIPLDFetcher(ipfsPath)
if err != nil {
return nil, err
}
return &Service{
Streamer: NewStateDiffStreamer(rpcClient),
Repository: NewCIDRepository(db),
Converter: NewPayloadConverter(ethClient),
Publisher: publisher,
PayloadChan: make(chan statediff.Payload, payloadChanBufferSize),
QuitChan: qc,
Streamer: NewStateDiffStreamer(rpcClient),
Repository: NewCIDRepository(db),
Converter: NewPayloadConverter(ethClient),
Publisher: publisher,
Screener: NewResponseScreener(),
Fetcher: fetcher,
Retriever: NewCIDRetriever(db),
Resolver: NewIPLDResolver(),
PayloadChan: make(chan statediff.Payload, payloadChanBufferSize),
QuitChan: qc,
Subscriptions: make(map[rpc.ID]Subscription),
}, nil
}
@ -121,6 +138,8 @@ func (sap *Service) SyncAndPublish(wg *sync.WaitGroup, forwardPayloadChan chan<-
log.Error(err)
continue
}
// If we have a ScreenAndServe process running, forward the payload to it
// If the ScreenAndServe process loop is slower than this one, will it miss some incoming payloads??
select {
case forwardPayloadChan <- *ipldPayload:
default:
@ -137,6 +156,7 @@ func (sap *Service) SyncAndPublish(wg *sync.WaitGroup, forwardPayloadChan chan<-
case err = <-sub.Err():
log.Error(err)
case <-sap.QuitChan:
// If we have a ScreenAndServe process running, forward the quit signal to it
select {
case forwardQuitchan <- true:
default:
@ -151,16 +171,19 @@ func (sap *Service) SyncAndPublish(wg *sync.WaitGroup, forwardPayloadChan chan<-
return nil
}
func (sap *Service) Serve(wg *sync.WaitGroup, receivePayloadChan <-chan IPLDPayload, receiveQuitchan <-chan bool) {
// ScreenAndServe is the processing loop used to screen data streamed from the state diffing eth node and send the appropriate data to a requesting client subscription
func (sap *Service) ScreenAndServe(wg *sync.WaitGroup, receivePayloadChan <-chan IPLDPayload, receiveQuitchan <-chan bool) {
wg.Add(1)
go func() {
for {
select {
case payload := <-receivePayloadChan:
println(payload.BlockNumber.Int64())
// Method for using subscription parameters to filter payload and stream relevent info to sub channel
err := sap.processResponse(payload)
if err != nil {
log.Error(err)
}
case <-receiveQuitchan:
log.Info("quiting Serve process")
log.Info("quiting ScreenAndServe process")
wg.Done()
return
}
@ -168,15 +191,59 @@ func (sap *Service) Serve(wg *sync.WaitGroup, receivePayloadChan <-chan IPLDPayl
}()
}
// Subscribe is used by the API to subscribe to the StateDiffingService loop
func (sap *Service) Subscribe(id rpc.ID, sub chan<- ResponsePayload, quitChan chan<- bool, params *Params) {
func (sap *Service) processResponse(payload IPLDPayload) error {
for id, sub := range sap.Subscriptions {
response, err := sap.Screener.ScreenResponse(sub.StreamFilters, payload)
if err != nil {
return err
}
sap.serve(id, *response)
}
return nil
}
// Subscribe is used by the API to subscribe to the service loop
func (sap *Service) Subscribe(id rpc.ID, sub chan<- ResponsePayload, quitChan chan<- bool, streamFilters *StreamFilters) {
log.Info("Subscribing to the statediff service")
sap.Lock()
sap.Subscriptions[id] = Subscription{
PayloadChan: sub,
QuitChan: quitChan,
PayloadChan: sub,
QuitChan: quitChan,
StreamFilters: streamFilters,
}
sap.Unlock()
// If the subscription requests a backfill, use the Postgres index to lookup and retrieve historical data
// Otherwise we only filter new data as it is streamed in from the state diffing geth node
if streamFilters.BackFill {
// Retrieve cached CIDs relevant to this subscriber
cids, err := sap.Retriever.RetrieveCIDs(*streamFilters)
if err != nil {
log.Error(err)
sap.serve(id, ResponsePayload{
Err: err,
})
return
}
for _, cid := range cids {
blocksWrapper, err := sap.Fetcher.FetchCIDs(cid)
if err != nil {
log.Error(err)
sap.serve(id, ResponsePayload{
Err: err,
})
return
}
backFillIplds, err := sap.Resolver.ResolveIPLDs(*blocksWrapper)
if err != nil {
log.Error(err)
sap.serve(id, ResponsePayload{
Err: err,
})
return
}
sap.serve(id, *backFillIplds)
}
}
}
// Unsubscribe is used to unsubscribe to the StateDiffingService loop
@ -192,28 +259,29 @@ func (sap *Service) Unsubscribe(id rpc.ID) error {
return nil
}
// Start is used to begin the StateDiffingService
// Start is used to begin the service
func (sap *Service) Start(*p2p.Server) error {
log.Info("Starting statediff service")
wg := new(sync.WaitGroup)
payloadChan := make(chan IPLDPayload)
quitChan := make(chan bool)
go sap.SyncAndPublish(wg, payloadChan, quitChan)
go sap.Serve(wg, payloadChan, quitChan)
sap.SyncAndPublish(wg, payloadChan, quitChan)
sap.ScreenAndServe(wg, payloadChan, quitChan)
return nil
}
// Stop is used to close down the StateDiffingService
// Stop is used to close down the service
func (sap *Service) Stop() error {
log.Info("Stopping statediff service")
close(sap.QuitChan)
return nil
}
// send is used to fan out and serve a payload to any subscriptions
func (sap *Service) send(payload ResponsePayload) {
// serve is used to send screened payloads to their requesting sub
func (sap *Service) serve(id rpc.ID, payload ResponsePayload) {
sap.Lock()
for id, sub := range sap.Subscriptions {
sub, ok := sap.Subscriptions[id]
if ok {
select {
case sub.PayloadChan <- payload:
log.Infof("sending state diff payload to subscription %s", id)

1
pkg/ipfs/test_helpers/mocks/api.go Normal file
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@ -0,0 +1 @@
package mocks

1
pkg/ipfs/test_helpers/mocks/screener.go Normal file
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@ -0,0 +1 @@
package mocks

22
pkg/ipfs/test_helpers/test_data.go
View File

@ -24,18 +24,12 @@ import (
"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/crypto"
"github.com/ethereum/go-ethereum/rlp"
"github.com/ethereum/go-ethereum/statediff"
"github.com/vulcanize/vulcanizedb/pkg/ipfs"
)
// AddressToLeafKey hashes an returns an address
func AddressToLeafKey(address common.Address) common.Hash {
return common.BytesToHash(crypto.Keccak256(address[:]))
}
// Test variables
var (
BlockNumber = big.NewInt(rand.Int63())
@ -55,9 +49,9 @@ var (
}}
emptyStorage = make([]statediff.StorageDiff, 0)
address = common.HexToAddress("0xaE9BEa628c4Ce503DcFD7E305CaB4e29E7476592")
ContractLeafKey = AddressToLeafKey(address)
ContractLeafKey = ipfs.AddressToKey(address)
anotherAddress = common.HexToAddress("0xaE9BEa628c4Ce503DcFD7E305CaB4e29E7476593")
AnotherContractLeafKey = AddressToLeafKey(anotherAddress)
AnotherContractLeafKey = ipfs.AddressToKey(anotherAddress)
testAccount = state.Account{
Nonce: NewNonceValue,
Balance: big.NewInt(NewBalanceValue),
@ -143,14 +137,14 @@ var (
HeaderCID: "mockHeaderCID",
TransactionCIDs: map[common.Hash]*ipfs.TrxMetaData{
common.HexToHash("0x0"): {
CID: "mockTrxCID1",
To: "mockTo1",
From: "mockFrom1",
CID: "mockTrxCID1",
Dst: "mockTo1",
Src: "mockFrom1",
},
common.HexToHash("0x1"): {
CID: "mockTrxCID2",
To: "mockTo2",
From: "mockFrom2",
CID: "mockTrxCID2",
Dst: "mockTo2",
Src: "mockFrom2",
},
},
ReceiptCIDs: map[common.Hash]*ipfs.ReceiptMetaData{

106
pkg/ipfs/types.go
View File

@ -20,23 +20,28 @@ import (
"encoding/json"
"math/big"
"github.com/ipfs/go-block-format"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
)
//
// Subscription holds the information for an individual client subscription
type Subscription struct {
PayloadChan chan<- ResponsePayload
QuitChan chan<- bool
PayloadChan chan<- ResponsePayload
QuitChan chan<- bool
StreamFilters *StreamFilters
}
// ResponsePayload holds the data returned from the seed node to the requesting client
type ResponsePayload struct {
HeadersRlp [][]byte `json:"headersRlp"`
UnclesRlp [][]byte `json:"unclesRlp"`
TransactionsRlp [][]byte `json:"transactionsRlp"`
ReceiptsRlp [][]byte `json:"receiptsRlp"`
StateNodesRlp [][]byte `json:"stateNodesRlp"`
StorageNodesRlp [][]byte `json:"storageNodesRlp"`
HeadersRlp [][]byte `json:"headersRlp"`
UnclesRlp [][]byte `json:"unclesRlp"`
TransactionsRlp [][]byte `json:"transactionsRlp"`
ReceiptsRlp [][]byte `json:"receiptsRlp"`
StateNodesRlp map[common.Hash][]byte `json:"stateNodesRlp"`
StorageNodesRlp map[common.Hash]map[common.Hash][]byte `json:"storageNodesRlp"`
Err error `json:"error"`
encoded []byte
err error
@ -60,6 +65,23 @@ func (sd *ResponsePayload) Encode() ([]byte, error) {
return sd.encoded, sd.err
}
type cidWrapper struct {
BlockNumber int64
Headers []string
Transactions []string
Receipts []string
StateNodes []StateNodeCID
StorageNodes []StorageNodeCID
}
type ipfsBlockWrapper struct {
Headers []blocks.Block
Transactions []blocks.Block
Receipts []blocks.Block
StateNodes map[common.Hash]blocks.Block
StorageNodes map[common.Hash]map[common.Hash]blocks.Block
}
// IPLDPayload is a custom type which packages ETH data for the IPFS publisher
type IPLDPayload struct {
HeaderRLP []byte
@ -73,11 +95,13 @@ type IPLDPayload struct {
StorageNodes map[common.Hash][]StorageNode
}
// StateNode struct used to flag node as leaf or not
type StateNode struct {
Value []byte
Leaf bool
}
// StorageNode struct used to flag node as leaf or not
type StorageNode struct {
Key common.Hash
Value []byte
@ -96,15 +120,19 @@ type CIDPayload struct {
StorageNodeCIDs map[common.Hash][]StorageNodeCID
}
// StateNodeCID is used to associate a leaf flag with a state node cid
type StateNodeCID struct {
CID string
Leaf bool
Key string `db:"state_key"`
}
// StorageNodeCID is used to associate a leaf flag with a storage node cid
type StorageNodeCID struct {
Key common.Hash
CID string
Leaf bool
Key string `db:"storage_key"`
CID string
Leaf bool
StateKey string `db:"state_key"`
}
// ReceiptMetaData wraps some additional data around our receipt CIDs for indexing
@ -115,45 +143,39 @@ type ReceiptMetaData struct {
// TrxMetaData wraps some additional data around our transaction CID for indexing
type TrxMetaData struct {
CID string
To string
From string
CID string
Src string
Dst string
}
// Params are set by the client to tell the server how to filter that is fed into their subscription
type Params struct {
HeaderFilter struct {
Off bool
StartingBlock int64
EndingBlock int64 // set to 0 or a negative value to have no ending block
Uncles bool
// StreamFilters are defined by the client to specifiy which data to receive from the seed node
type StreamFilters struct {
BackFill bool
BackFillOnly bool
StartingBlock int64
EndingBlock int64 // set to 0 or a negative value to have no ending block
HeaderFilter struct {
Off bool
FinalOnly bool
}
TrxFilter struct {
Off bool
StartingBlock int64
EndingBlock int64
Src string
Dst string
Off bool
Src []string
Dst []string
}
ReceiptFilter struct {
Off bool
StartingBlock int64
EndingBlock int64
Topic0s []string
Off bool
Topic0s []string
}
StateFilter struct {
Off bool
StartingBlock int64
EndingBlock int64
Address string // is converted to state key by taking its keccak256 hash
LeafsOnly bool
Off bool
Addresses []string // is converted to state key by taking its keccak256 hash
IntermediateNodes bool
}
StorageFilter struct {
Off bool
StartingBlock int64
EndingBlock int64
Address string
StorageKey string
LeafsOnly bool
Off bool
Addresses []string
StorageKeys []string
IntermediateNodes bool
}
}