feat: adding latest value for thawingUntil on Indexer and Provision

Author: juanmardefago

schema.graphql

@@ -831,6 +831,8 @@ type Indexer @entity(immutable: false) {
   lastDelegationParameterUpdate: Int!
   "Count of how many times this indexer has been forced to close an allocation"
   forcedClosures: Int!
+  "[Horizon only] Latest value for thaw request thawingUntil"
+  thawingUntil: BigInt!
 
   # Provisioning
   provisions: [Provision!]! @derivedFrom(field: "indexer")
@@ -996,6 +998,8 @@ type Provision @entity(immutable: false) {
   delegatedStakeRatio: BigDecimal!
   "Percentage of indexers' own rewards received in relation to its own stake. 1 (100%) means that the indexer is receiving the exact amount that is generated by his own stake, the value can be over 100% or below depending on the amount of delegation and cuts set"
   indexerRewardsOwnGenerationRatio: BigDecimal!
+  "Latest value for thaw request thawingUntil"
+  thawingUntil: BigInt!
 
   "Service registry URL for the indexer"
   url: String

src/mappings/helpers/helpers.ts

@@ -176,6 +176,7 @@ export function createOrLoadIndexer(indexerAddress: Bytes, timestamp: BigInt ):
     indexer.forcedClosures = 0
     indexer.allocationCount = 0
     indexer.totalAllocationCount = BigInt.fromI32(0)
+    indexer.thawingUntil = BigInt.fromI32(0)
 
     indexer.totalReturn = BigDecimal.fromString('0')
     indexer.annualizedReturn = BigDecimal.fromString('0')
@@ -241,6 +242,7 @@ export function createOrLoadProvision(indexerAddress: Bytes, verifierAddress: By
     provision.delegatedTokens = BigInt.fromI32(0)
     provision.delegatorShares = BigInt.fromI32(0)
     provision.delegationExchangeRate = BigInt.fromI32(0).toBigDecimal()
+    provision.thawingUntil = BigInt.fromI32(0)
     provision.ownStakeRatio = BigInt.fromI32(0).toBigDecimal()
     provision.delegatedStakeRatio = BigInt.fromI32(0).toBigDecimal()
     provision.indexerRewardsOwnGenerationRatio = BigInt.fromI32(0).toBigDecimal()

src/mappings/horizonStaking.ts

@@ -270,6 +270,14 @@ export function handleThawRequestCreated(event: ThawRequestCreated): void {
         throw new Error("Invalid thaw request type")
     }
     request.save()
+
+    // update latest thawingUntil for provision and indexer
+    let provision = createOrLoadProvision(event.params.serviceProvider, event.params.verifier, event.block.timestamp)
+    provision.thawingUntil = event.params.thawingUntil
+    provision.save()
+
+    indexer.thawingUntil = event.params.thawingUntil
+    indexer.save()
 }
 
 export function handleThawRequestFulfilled(event: ThawRequestFulfilled): void {