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types.go
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/
types.go
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// Copyright (c) 2020 The Meter.io developers
// Distributed under the GNU Lesser General Public License v3.0 software license, see the accompanying
// file LICENSE or <https://www.gnu.org/licenses/lgpl-3.0.html>
package subscriptions
import (
"github.com/saolacoincom/saolacoin/block"
"github.com/saolacoincom/saolacoin/chain"
"github.com/saolacoincom/saolacoin/meter"
"github.com/saolacoincom/saolacoin/tx"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/math"
)
//BlockMessage block piped by websocket
type BlockMessage struct {
Number uint32 `json:"number"`
ID meter.Bytes32 `json:"id"`
Size uint32 `json:"size"`
ParentID meter.Bytes32 `json:"parentID"`
Timestamp uint64 `json:"timestamp"`
GasLimit uint64 `json:"gasLimit"`
Beneficiary meter.Address `json:"beneficiary"`
GasUsed uint64 `json:"gasUsed"`
TotalScore uint64 `json:"totalScore"`
TxsRoot meter.Bytes32 `json:"txsRoot"`
StateRoot meter.Bytes32 `json:"stateRoot"`
ReceiptsRoot meter.Bytes32 `json:"receiptsRoot"`
Signer meter.Address `json:"signer"`
Transactions []meter.Bytes32 `json:"transactions"`
Obsolete bool `json:"obsolete"`
}
func convertBlock(b *chain.Block) (*BlockMessage, error) {
header := b.Header()
signer, err := header.Signer()
if err != nil {
return nil, err
}
txs := b.Transactions()
txIds := make([]meter.Bytes32, len(txs))
for i, tx := range txs {
txIds[i] = tx.ID()
}
return &BlockMessage{
Number: header.Number(),
ID: header.ID(),
ParentID: header.ParentID(),
Timestamp: header.Timestamp(),
TotalScore: header.TotalScore(),
GasLimit: header.GasLimit(),
GasUsed: header.GasUsed(),
Beneficiary: header.Beneficiary(),
Signer: signer,
Size: uint32(b.Size()),
StateRoot: header.StateRoot(),
ReceiptsRoot: header.ReceiptsRoot(),
TxsRoot: header.TxsRoot(),
Transactions: txIds,
Obsolete: b.Obsolete,
}, nil
}
type LogMeta struct {
BlockID meter.Bytes32 `json:"blockID"`
BlockNumber uint32 `json:"blockNumber"`
BlockTimestamp uint64 `json:"blockTimestamp"`
TxID meter.Bytes32 `json:"txID"`
TxOrigin meter.Address `json:"txOrigin"`
}
//TransferMessage transfer piped by websocket
type TransferMessage struct {
Sender meter.Address `json:"sender"`
Recipient meter.Address `json:"recipient"`
Amount *math.HexOrDecimal256 `json:"amount"`
Token byte `json:"token"`
Meta LogMeta `json:"meta"`
Obsolete bool `json:"obsolete"`
}
func convertTransfer(header *block.Header, tx *tx.Transaction, transfer *tx.Transfer, obsolete bool) (*TransferMessage, error) {
signer, err := tx.Signer()
if err != nil {
return nil, err
}
return &TransferMessage{
Sender: transfer.Sender,
Recipient: transfer.Recipient,
Amount: (*math.HexOrDecimal256)(transfer.Amount),
Token: transfer.Token,
Meta: LogMeta{
BlockID: header.ID(),
BlockNumber: header.Number(),
BlockTimestamp: header.Timestamp(),
TxID: tx.ID(),
TxOrigin: signer,
},
Obsolete: obsolete,
}, nil
}
//EventMessage event piped by websocket
type EventMessage struct {
Address meter.Address `json:"address"`
Topics []meter.Bytes32 `json:"topics"`
Data string `json:"data"`
Meta LogMeta `json:"meta"`
Obsolete bool `json:"obsolete"`
}
func convertEvent(header *block.Header, tx *tx.Transaction, event *tx.Event, obsolete bool) (*EventMessage, error) {
signer, err := tx.Signer()
if err != nil {
return nil, err
}
return &EventMessage{
Address: event.Address,
Data: hexutil.Encode(event.Data),
Meta: LogMeta{
BlockID: header.ID(),
BlockNumber: header.Number(),
BlockTimestamp: header.Timestamp(),
TxID: tx.ID(),
TxOrigin: signer,
},
Topics: event.Topics,
Obsolete: obsolete,
}, nil
}
// EventFilter contains options for contract event filtering.
type EventFilter struct {
Address *meter.Address // restricts matches to events created by specific contracts
Topic0 *meter.Bytes32
Topic1 *meter.Bytes32
Topic2 *meter.Bytes32
Topic3 *meter.Bytes32
Topic4 *meter.Bytes32
}
// Match returs whether event matches filter
func (ef *EventFilter) Match(event *tx.Event) bool {
if (ef.Address != nil) && (*ef.Address != event.Address) {
return false
}
matchTopic := func(topic *meter.Bytes32, index int) bool {
if topic != nil {
if len(event.Topics) <= index {
return false
}
if *topic != event.Topics[index] {
return false
}
}
return true
}
return matchTopic(ef.Topic0, 0) &&
matchTopic(ef.Topic1, 1) &&
matchTopic(ef.Topic2, 2) &&
matchTopic(ef.Topic3, 3) &&
matchTopic(ef.Topic4, 4)
}
// TransferFilter contains options for contract transfer filtering.
type TransferFilter struct {
TxOrigin *meter.Address // who send transaction
Sender *meter.Address // who transferred tokens
Recipient *meter.Address // who received tokens
}
// Match returs whether transfer matches filter
func (tf *TransferFilter) Match(transfer *tx.Transfer, origin meter.Address) bool {
if (tf.TxOrigin != nil) && (*tf.TxOrigin != origin) {
return false
}
if (tf.Sender != nil) && (*tf.Sender != transfer.Sender) {
return false
}
if (tf.Recipient != nil) && (*tf.Recipient != transfer.Recipient) {
return false
}
return true
}
type BeatMessage struct {
Number uint32 `json:"number"`
ID meter.Bytes32 `json:"id"`
ParentID meter.Bytes32 `json:"parentID"`
Timestamp uint64 `json:"timestamp"`
Bloom string `json:"bloom"`
K uint32 `json:"k"`
Obsolete bool `json:"obsolete"`
}