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feat: transaction context #107

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Oct 18, 2023
Merged

feat: transaction context #107

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44 changes: 40 additions & 4 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@ Events are created with a simple schema.
{
"type": "event type",
"timestamp": "wall clock timestamp of event",
"context": "metadata about the event",
"payload": "the full event specific payload"
}
```
Expand All @@ -28,10 +29,14 @@ The chainsync input produces three event types: `block`, `rollback`, and
block:
```json
{
"payload": {
"context": {
"blockNumber": 123,
"blockHash": "abcd123...",
"slotNumber": 1234567,
},
"payload": {
"blockBodySize": 123,
"issuerVkey": "a712f81ab2eac...",
"blockHash": "abcd123...",
"blockCbor": "85828a1a000995c21..."
}
}
Expand All @@ -50,12 +55,43 @@ rollback:
transaction:
```json
{
"payload": {
"context": {
"blockNumber": 123,
"blockHash": "abcd123...",
"slotNumber": 1234567,
"transactionHash": "0deadbeef123...",
"transactionIdx": 0,
},
"payload": {
"blockHash": "abcd123...",
"transactionCbor": "a500828258200a1ad..."
"inputs": [
"abcdef123...#0",
"abcdef123...#1",
],
"outputs": [
{
"address": "addr1qwerty123...",
"amount": 12345687,
"assets": [
{
"name": "Foo",
"nameHex": "abcd123...",
"amount": 123,
"fingerprint": "asset1abcd...",
"policyId": "54321..."
}
]
}
],
"metadata": {
674: {
"msg": [
"Test message"
]
}
},
"fee": 1234567,
"ttl": 123
}
}
```
Expand Down
10 changes: 5 additions & 5 deletions input/chainsync/chainsync.go
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Original file line number Diff line number Diff line change
Expand Up @@ -220,8 +220,8 @@ func (c *ChainSync) handleRollForward(blockType uint, blockData interface{}, tip
}
blockEvt := event.New("chainsync.block", time.Now(), NewBlockHeaderContext(v), NewBlockEvent(block, c.includeCbor))
c.eventChan <- blockEvt
for _, transaction := range block.Transactions() {
txEvt := event.New("chainsync.transaction", time.Now(), nil, NewTransactionEvent(block, transaction, c.includeCbor))
for t, transaction := range block.Transactions() {
txEvt := event.New("chainsync.transaction", time.Now(), NewTransactionContext(block, transaction, uint32(t)), NewTransactionEvent(block, transaction, c.includeCbor))
c.eventChan <- txEvt
}
c.updateStatus(v.SlotNumber(), v.BlockNumber(), v.Hash(), tip.Point.Slot, hex.EncodeToString(tip.Point.Hash))
Expand All @@ -230,10 +230,10 @@ func (c *ChainSync) handleRollForward(blockType uint, blockData interface{}, tip
}

func (c *ChainSync) handleBlockFetchBlock(block ledger.Block) error {
blockEvt := event.New("chainsync.block", time.Now(), nil, NewBlockEvent(block, c.includeCbor))
blockEvt := event.New("chainsync.block", time.Now(), NewBlockContext(block), NewBlockEvent(block, c.includeCbor))
c.eventChan <- blockEvt
for _, transaction := range block.Transactions() {
txEvt := event.New("chainsync.transaction", time.Now(), nil, NewTransactionEvent(block, transaction, c.includeCbor))
for t, transaction := range block.Transactions() {
txEvt := event.New("chainsync.transaction", time.Now(), NewTransactionContext(block, transaction, uint32(t)), NewTransactionEvent(block, transaction, c.includeCbor))
c.eventChan <- txEvt
}
c.updateStatus(block.SlotNumber(), block.BlockNumber(), block.Hash(), c.bulkRangeEnd.Slot, hex.EncodeToString(c.bulkRangeEnd.Hash))
Expand Down
27 changes: 21 additions & 6 deletions input/chainsync/tx.go
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Original file line number Diff line number Diff line change
Expand Up @@ -19,25 +19,40 @@ import (
"github.com/blinklabs-io/gouroboros/ledger"
)

type TransactionContext struct {
BlockNumber uint64 `json:"blockNumber"`
SlotNumber uint64 `json:"slotNumber"`
TransactionHash string `json:"transactionHash"`
TransactionIdx uint32 `json:"transactionIdx"`
}

type TransactionEvent struct {
BlockNumber uint64 `json:"blockNumber"`
BlockHash string `json:"blockHash"`
SlotNumber uint64 `json:"slotNumber"`
TransactionHash string `json:"transactionHash"`
TransactionCbor byteSliceJsonHex `json:"transactionCbor,omitempty"`
Inputs []ledger.TransactionInput `json:"inputs"`
Outputs []ledger.TransactionOutput `json:"outputs"`
Metadata *cbor.Value `json:"metadata,omitempty"`
Fee uint64 `json:"fee"`
TTL uint64 `json:"ttl,omitempty"`
}

func NewTransactionEvent(block ledger.Block, tx ledger.Transaction, includeCbor bool) TransactionEvent {
evt := TransactionEvent{
func NewTransactionContext(block ledger.Block, tx ledger.Transaction, index uint32) TransactionContext {
ctx := TransactionContext{
BlockNumber: block.BlockNumber(),
BlockHash: block.Hash(),
SlotNumber: block.SlotNumber(),
TransactionHash: tx.Hash(),
TransactionIdx: index,
}
return ctx
}

func NewTransactionEvent(block ledger.Block, tx ledger.Transaction, includeCbor bool) TransactionEvent {
evt := TransactionEvent{
BlockHash: block.Hash(),
Inputs: tx.Inputs(),
Outputs: tx.Outputs(),
Fee: tx.Fee(),
TTL: tx.TTL(),
}
if includeCbor {
evt.TransactionCbor = tx.Cbor()
Expand Down
14 changes: 10 additions & 4 deletions output/notify/notify.go
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Original file line number Diff line number Diff line change
Expand Up @@ -97,16 +97,22 @@ func (n *NotifyOutput) Start() error {
if payload == nil {
panic(fmt.Errorf("ERROR: %v", payload))
}
context := evt.Context
if context == nil {
panic(fmt.Errorf("ERROR: %v", context))
}

te := payload.(chainsync.TransactionEvent)
tc := context.(chainsync.TransactionContext)
err := beeep.Notify(
n.title,
fmt.Sprintf("New Transaction!\nBlockNumber: %d, SlotNumber: %d\nInputs: %d, Outputs: %d\nHash: %s",
te.BlockNumber,
te.SlotNumber,
fmt.Sprintf("New Transaction!\nBlockNumber: %d, SlotNumber: %d\nInputs: %d, Outputs: %d\nFee: %d\nHash: %s",
tc.BlockNumber,
tc.SlotNumber,
len(te.Inputs),
len(te.Outputs),
te.TransactionHash,
te.Fee,
tc.TransactionHash,
),
"assets/snek-icon.png",
)
Expand Down
14 changes: 10 additions & 4 deletions output/push/push.go
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Original file line number Diff line number Diff line change
Expand Up @@ -114,17 +114,23 @@ func (p *PushOutput) Start() error {
if payload == nil {
panic(fmt.Errorf("ERROR: %v", payload))
}
context := evt.Context
if context == nil {
panic(fmt.Errorf("ERROR: %v", context))
}

te := payload.(chainsync.TransactionEvent)
tc := context.(chainsync.TransactionContext)

// Create notification message
title := "Snek"
body := fmt.Sprintf("New Transaction!\nBlockNumber: %d, SlotNumber: %d\nInputs: %d, Outputs: %d\nHash: %s",
te.BlockNumber,
te.SlotNumber,
body := fmt.Sprintf("New Transaction!\nBlockNumber: %d, SlotNumber: %d\nInputs: %d, Outputs: %d\nFee: %d\nHash: %s",
tc.BlockNumber,
tc.SlotNumber,
len(te.Inputs),
len(te.Outputs),
te.TransactionHash,
te.Fee,
tc.TransactionHash,
)

// Send notification
Expand Down
13 changes: 9 additions & 4 deletions output/webhook/webhook.go
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Original file line number Diff line number Diff line change
Expand Up @@ -155,14 +155,15 @@ func formatWebhook(e *event.Event, format string) []byte {
})
case "chainsync.transaction":
te := e.Payload.(chainsync.TransactionEvent)
tc := e.Context.(chainsync.TransactionContext)
dme.Title = "New Cardano Transaction"
dmefs = append(dmefs, &DiscordMessageEmbedField{
Name: "Block Number",
Value: fmt.Sprintf("%d", te.BlockNumber),
Value: fmt.Sprintf("%d", tc.BlockNumber),
})
dmefs = append(dmefs, &DiscordMessageEmbedField{
Name: "Slot Number",
Value: fmt.Sprintf("%d", te.SlotNumber),
Value: fmt.Sprintf("%d", tc.SlotNumber),
})
dmefs = append(dmefs, &DiscordMessageEmbedField{
Name: "Inputs",
Expand All @@ -172,12 +173,16 @@ func formatWebhook(e *event.Event, format string) []byte {
Name: "Outputs",
Value: fmt.Sprintf("%d", len(te.Outputs)),
})
dmefs = append(dmefs, &DiscordMessageEmbedField{
Name: "Fee",
Value: fmt.Sprintf("%d", te.Fee),
})
dmefs = append(dmefs, &DiscordMessageEmbedField{
Name: "Transaction Hash",
Value: te.TransactionHash,
Value: tc.TransactionHash,
})
// TODO: fix this URL for different networks
dme.URL = fmt.Sprintf("https://cexplorer.io/tx/%s", te.TransactionHash)
dme.URL = fmt.Sprintf("https://cexplorer.io/tx/%s", tc.TransactionHash)
default:
dwe.Content = fmt.Sprintf("%v", e.Payload)
}
Expand Down
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