github.com/stellar/stellar-etl@v1.0.1-0.20240312145900-4874b6bf2b89/internal/transform/claimable_balance.go (about)

     1  package transform
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/stellar/go/ingest"
     7  	"github.com/stellar/go/xdr"
     8  	"github.com/stellar/stellar-etl/internal/utils"
     9  )
    10  
    11  func transformClaimants(claimants []xdr.Claimant) []Claimant {
    12  	var transformed []Claimant
    13  	for _, c := range claimants {
    14  		cv0 := c.MustV0()
    15  		transformed = append(transformed, Claimant{
    16  			Destination: cv0.Destination.Address(),
    17  			Predicate:   cv0.Predicate,
    18  		})
    19  	}
    20  	return transformed
    21  }
    22  
    23  // TransformClaimableBalance converts a claimable balance from the history archive ingestion system into a form suitable for BigQuery
    24  func TransformClaimableBalance(ledgerChange ingest.Change, header xdr.LedgerHeaderHistoryEntry) (ClaimableBalanceOutput, error) {
    25  	ledgerEntry, changeType, outputDeleted, err := utils.ExtractEntryFromChange(ledgerChange)
    26  	if err != nil {
    27  		return ClaimableBalanceOutput{}, err
    28  	}
    29  
    30  	balanceEntry, balanceFound := ledgerEntry.Data.GetClaimableBalance()
    31  	if !balanceFound {
    32  		return ClaimableBalanceOutput{}, fmt.Errorf("could not extract claimable balance data from ledger entry; actual type is %s", ledgerEntry.Data.Type)
    33  	}
    34  	balanceID, err := xdr.MarshalHex(balanceEntry.BalanceId)
    35  	if err != nil {
    36  		return ClaimableBalanceOutput{}, fmt.Errorf("Invalid balanceId in op: %d", uint32(ledgerEntry.LastModifiedLedgerSeq))
    37  	}
    38  	outputFlags := uint32(balanceEntry.Flags())
    39  	outputAsset, err := transformSingleAsset(balanceEntry.Asset)
    40  	if err != nil {
    41  		return ClaimableBalanceOutput{}, err
    42  	}
    43  	outputClaimants := transformClaimants(balanceEntry.Claimants)
    44  	outputAmount := balanceEntry.Amount
    45  
    46  	outputLastModifiedLedger := uint32(ledgerEntry.LastModifiedLedgerSeq)
    47  
    48  	closedAt, err := utils.TimePointToUTCTimeStamp(header.Header.ScpValue.CloseTime)
    49  	if err != nil {
    50  		return ClaimableBalanceOutput{}, err
    51  	}
    52  
    53  	ledgerSequence := header.Header.LedgerSeq
    54  
    55  	transformed := ClaimableBalanceOutput{
    56  		BalanceID:          balanceID,
    57  		AssetCode:          outputAsset.AssetCode,
    58  		AssetIssuer:        outputAsset.AssetIssuer,
    59  		AssetType:          outputAsset.AssetType,
    60  		AssetID:            outputAsset.ID,
    61  		Claimants:          outputClaimants,
    62  		AssetAmount:        float64(outputAmount) / 1.0e7,
    63  		Sponsor:            ledgerEntrySponsorToNullString(ledgerEntry),
    64  		LastModifiedLedger: outputLastModifiedLedger,
    65  		LedgerEntryChange:  uint32(changeType),
    66  		Flags:              outputFlags,
    67  		Deleted:            outputDeleted,
    68  		ClosedAt:           closedAt,
    69  		LedgerSequence:     uint32(ledgerSequence),
    70  	}
    71  	return transformed, nil
    72  }