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feat(rfq-api): active api schema changes #3248

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feat(rfq-api): active api schema changes #3248

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55d0dfd
Feat: deduct fixed fee from dest amount
dwasse Oct 3, 2024
ac59d5e
Fix: correct quote type
dwasse Oct 3, 2024
994cd52
[goreleaser]
dwasse Oct 7, 2024
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7 changes: 0 additions & 7 deletions services/rfq/api/model/request.go
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Original file line number Diff line number Diff line change
Expand Up @@ -42,13 +42,6 @@ type PutRFQRequest struct {
Data QuoteData `json:"data"`
}

// QuoteRequest represents a request for a quote.
type QuoteRequest struct {
RequestID string `json:"request_id"`
Data QuoteData `json:"data"`
CreatedAt time.Time `json:"created_at"`
}

// QuoteData represents the data within a quote request.
type QuoteData struct {
OriginChainID int `json:"origin_chain_id"`
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6 changes: 3 additions & 3 deletions services/rfq/api/rest/server.go
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Expand Up @@ -557,9 +557,9 @@ func (r *QuoterAPIServer) PutRFQRequest(c *gin.Context) {
Reason: "no quotes found",
}
} else {
quoteType := quoteTypeActive
if activeQuote == nil {
quoteType = quoteTypePassive
quoteType := quoteTypePassive
if quote.QuoteID == activeQuote.QuoteID {
quoteType = quoteTypeActive
}
span.SetAttributes(
attribute.String("quote_type", quoteType),
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18 changes: 15 additions & 3 deletions services/rfq/relayer/quoter/quoter.go
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Original file line number Diff line number Diff line change
Expand Up @@ -340,13 +340,25 @@ func (m *Manager) generateActiveRFQ(ctx context.Context, msg *model.ActiveRFQMes
if err != nil {
return nil, fmt.Errorf("error generating quote: %w", err)
}
span.SetAttributes(attribute.String("dest_amount", rawQuote.DestAmount))
fixedFee, ok := new(big.Int).SetString(rawQuote.FixedFee, 10)
if !ok {
return nil, fmt.Errorf("error parsing fixed fee: %s", rawQuote.FixedFee)
}
rawDestAmount, ok := new(big.Int).SetString(rawQuote.DestAmount, 10)
if !ok {
return nil, fmt.Errorf("error parsing dest amount: %s", rawQuote.DestAmount)
}
destAmountNet := new(big.Int).Sub(rawDestAmount, fixedFee)
span.SetAttributes(
attribute.String("dest_amount", rawQuote.DestAmount),
attribute.String("fixed_fee", rawQuote.FixedFee),
attribute.String("dest_amount_net", destAmountNet.String()),
)

rfqResp := model.WsRFQResponse{
RequestID: rfqRequest.RequestID,
DestAmount: rawQuote.DestAmount,
DestAmount: destAmountNet.String(),
Comment on lines +343 to +360
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🛠️ Refactor suggestion

Improve error handling and consider using decimal arithmetic for financial calculations.

The changes introduce logic to calculate the net destination amount after deducting a fixed fee. While the implementation is generally correct, there are a few areas that could be improved:

  1. Error handling: The code uses if !ok checks for parsing strings to big.Int. Consider using more descriptive error messages or custom errors for better debugging.

  2. Precision concerns: Financial calculations often require high precision. Consider using a decimal arithmetic library like shopspring/decimal for more accurate calculations, especially when dealing with fees and amounts.

  3. Negative amount check: There's no check to ensure that the destAmountNet doesn't become negative after subtracting the fixed fee. This could lead to unexpected behavior.

Here's a suggested refactoring using the shopspring/decimal library:

import (
    "github.com/shopspring/decimal"
    // ... other imports
)

// ... inside generateActiveRFQ method
fixedFee, err := decimal.NewFromString(rawQuote.FixedFee)
if err != nil {
    return nil, fmt.Errorf("error parsing fixed fee: %w", err)
}

rawDestAmount, err := decimal.NewFromString(rawQuote.DestAmount)
if err != nil {
    return nil, fmt.Errorf("error parsing dest amount: %w", err)
}

destAmountNet := rawDestAmount.Sub(fixedFee)
if destAmountNet.IsNegative() {
    return nil, fmt.Errorf("net destination amount is negative: %s", destAmountNet)
}

span.SetAttributes(
    attribute.String("dest_amount", rawQuote.DestAmount),
    attribute.String("fixed_fee", rawQuote.FixedFee),
    attribute.String("dest_amount_net", destAmountNet.String()),
)

rfqResp := model.WsRFQResponse{
    RequestID:  rfqRequest.RequestID,
    DestAmount: destAmountNet.String(),
}

This refactoring improves precision, error handling, and adds a check for negative net amounts.

}
span.SetAttributes(attribute.String("dest_amount", rawQuote.DestAmount))
respBytes, err := json.Marshal(rfqResp)
if err != nil {
return nil, fmt.Errorf("error serializing response: %w", err)
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