Merge pull request #12 from graphprotocol/juanmardefago/subgraph-tran…

…sfer

feat: add support for Subgraph Transfer event

schema.graphql

@@ -41,6 +41,7 @@ type CounterEntity @entity {
   subgraphL2TransferFinalizedEventCount: BigInt!
   curatorBalanceReceivedEventCount: BigInt!
   curatorBalanceReturnedToBeneficiaryEventCount: BigInt!
+  subgraphTransferredEventCount: BigInt!
   #interface counters
   eventCount: BigInt!
   subgraphEventCount: BigInt!
@@ -595,6 +596,36 @@ type SubgraphL2TransferFinalizedEvent implements SubgraphEvent & Event @entity(i
   tx_cumulativeGasUsed: BigInt!
 }
 
+type SubgraphTransferredEvent implements SubgraphEvent & GraphAccountEvent & Event
+  @entity(immutable: true) {
+  id: ID!
+
+  timestamp: BigInt!
+
+  blockNumber: BigInt!
+
+  tx_hash: Bytes!
+
+  typename: String!
+
+  subgraph: Subgraph!
+
+  from: GraphAccount!
+
+  to: GraphAccount!
+
+  "User that triggered the Event"
+  accounts: [GraphAccount!]!
+
+  tx_gasLimit: BigInt!
+
+  tx_gasPrice: BigInt!
+
+  tx_gasUsed: BigInt!
+
+  tx_cumulativeGasUsed: BigInt!
+}
+
 # Profile events (includes Indexer, Curator and Delegator events)
 
 interface GraphAccountEvent {

src/mappings/gns.ts

@@ -21,6 +21,7 @@ import {
   SubgraphVersionUpdated,
   LegacySubgraphClaimed,
   GNS,
+  Transfer,
 } from '../types/GNS/GNS'
 
 import {
@@ -41,6 +42,7 @@ import {
   ParameterUpdatedEvent,
   SetDefaultNameEvent,
   SubgraphVersionMetadataUpdatedEvent,
+  SubgraphTransferredEvent,
 } from '../types/schema'
 
 import { 
@@ -885,3 +887,48 @@ export function handleSubgraphVersionUpdated(event: SubgraphVersionUpdated): voi
 export function handleLegacySubgraphClaimed(event: LegacySubgraphClaimed): void {
   let eventId = event.transaction.hash.toHexString().concat('-').concat(event.logIndex.toString())
 }
+
+// - event: Transfer(indexed address,indexed address,indexed uint256)
+//   handler: handleTransfer
+
+export function handleTransfer(event: Transfer): void {
+  let eventId = event.transaction.hash.toHexString().concat('-').concat(event.logIndex.toString())
+  let newOwner = createOrLoadGraphAccount(event.params.to.toHexString())
+  let oldOwner = createOrLoadGraphAccount(event.params.from.toHexString())
+  let subgraphID = convertBigIntSubgraphIDToBase58(event.params.tokenId)
+  let accounts = new Array<String>()
+  accounts.push(oldOwner.id)
+  accounts.push(newOwner.id)
+
+  // Update subgraph v2
+  let subgraph = createOrLoadSubgraph(
+    subgraphID,
+    event.transaction.from
+  )
+  subgraph.owner = newOwner.id
+  subgraph.save()
+
+  //todo
+  let otherEventEntity = new SubgraphTransferredEvent(eventId)
+  otherEventEntity.timestamp = event.block.timestamp
+  otherEventEntity.tx_gasLimit = event.transaction.gasLimit
+  otherEventEntity.tx_gasPrice = event.transaction.gasPrice
+  otherEventEntity.tx_gasUsed = event.receipt!.gasUsed
+  otherEventEntity.tx_cumulativeGasUsed = event.receipt!.cumulativeGasUsed
+  otherEventEntity.blockNumber = event.block.number
+  otherEventEntity.tx_hash = event.transaction.hash
+  otherEventEntity.typename = 'SubgraphTransferredEvent'
+  otherEventEntity.subgraph = subgraph.id
+  otherEventEntity.from = oldOwner.id
+  otherEventEntity.to = newOwner.id
+  otherEventEntity.accounts = accounts
+  otherEventEntity.save()
+
+  let counter = getCounter()
+  counter.subgraphEventCount = counter.subgraphEventCount.plus(BIGINT_ONE)
+  counter.graphAccountEventCount = counter.graphAccountEventCount.plus(BIGINT_ONE)
+  counter.eventCount = counter.eventCount.plus(BIGINT_ONE)
+  counter.subgraphTransferredEventCount = counter.subgraphTransferredEventCount.plus(BIGINT_ONE)
+  counter.save()
+}
+

src/mappings/helpers.ts

@@ -72,6 +72,7 @@ export function getCounter(): CounterEntity {
     counter.subgraphL2TransferFinalizedEventCount = BIGINT_ZERO
     counter.curatorBalanceReceivedEventCount = BIGINT_ZERO
     counter.curatorBalanceReturnedToBeneficiaryEventCount = BIGINT_ZERO
+    counter.subgraphTransferredEventCount = BIGINT_ZERO
     // Interface counters
     counter.eventCount = BIGINT_ZERO
     counter.subgraphEventCount = BIGINT_ZERO

subgraph.template.yaml

@@ -152,6 +152,33 @@ dataSources:
           handler: handleCuratorBalanceReturnedToBeneficiary
           receipt: true
 {{/isL1}}
+  - kind: ethereum/contract
+    name: SubgraphNFT
+    network: {{network}}
+    source:
+      address: "{{subgraphNFT}}"
+      abi: SubgraphNFT
+      startBlock: {{blockNumber}}
+    mapping:
+      kind: ethereum/events
+      apiVersion: 0.0.7
+      language: wasm/assemblyscript
+      file: ./src/mappings/gns.ts
+      entities:
+        - Subgraph
+        - SubgraphVersion
+        - SubgraphDeployment
+        - GraphAccount
+        - NameSignal
+      abis:
+        - name: SubgraphNFT
+          file: ./node_modules/@graphprotocol/contracts/dist/abis/SubgraphNFT.json
+        - name: EpochManager
+          file: ./node_modules/@graphprotocol/contracts/dist/abis/EpochManager.json
+      eventHandlers:
+        - event: Transfer(indexed address,indexed address,indexed uint256)
+          handler: handleTransfer
+          receipt: true
   - kind: ethereum/contract
     name: ServiceRegistry
     network: {{network}}