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payments_handler.go
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/
payments_handler.go
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package httphandler
import (
"context"
"encoding/json"
"errors"
"fmt"
"net/http"
"github.com/go-chi/chi/v5"
"github.com/stellar/go/support/http/httpdecode"
"github.com/stellar/go/support/log"
"github.com/stellar/go/support/render/httpjson"
"github.com/stellar/stellar-disbursement-platform-backend/db"
"github.com/stellar/stellar-disbursement-platform-backend/internal/data"
"github.com/stellar/stellar-disbursement-platform-backend/internal/events"
"github.com/stellar/stellar-disbursement-platform-backend/internal/events/schemas"
"github.com/stellar/stellar-disbursement-platform-backend/internal/serve/httperror"
"github.com/stellar/stellar-disbursement-platform-backend/internal/serve/httpresponse"
"github.com/stellar/stellar-disbursement-platform-backend/internal/serve/middleware"
"github.com/stellar/stellar-disbursement-platform-backend/internal/serve/validators"
"github.com/stellar/stellar-disbursement-platform-backend/internal/services"
"github.com/stellar/stellar-disbursement-platform-backend/internal/utils"
"github.com/stellar/stellar-disbursement-platform-backend/stellar-auth/pkg/auth"
)
type PaymentsHandler struct {
Models *data.Models
DBConnectionPool db.DBConnectionPool
AuthManager auth.AuthManager
EventProducer events.Producer
}
type RetryPaymentsRequest struct {
PaymentIDs []string `json:"payment_ids"`
}
func (r *RetryPaymentsRequest) validate() *httperror.HTTPError {
validator := validators.NewValidator()
validator.Check(len(r.PaymentIDs) != 0, "payment_ids", "payment_ids should not be empty")
if validator.HasErrors() {
return httperror.BadRequest("", nil, validator.Errors)
}
return nil
}
func (p PaymentsHandler) GetPayment(w http.ResponseWriter, r *http.Request) {
payment_id := chi.URLParam(r, "id")
payment, err := p.Models.Payment.Get(r.Context(), payment_id, p.DBConnectionPool)
if err != nil {
if errors.Is(data.ErrRecordNotFound, err) {
errorResponse := fmt.Sprintf("Cannot retrieve payment with ID: %s", payment_id)
httperror.NotFound(errorResponse, err, nil).Render(w)
return
} else {
ctx := r.Context()
msg := fmt.Sprintf("Cannot retrieve payment with id %s", payment_id)
httperror.InternalError(ctx, msg, err, nil).Render(w)
return
}
}
httpjson.RenderStatus(w, http.StatusOK, payment, httpjson.JSON)
}
func (p PaymentsHandler) GetPayments(w http.ResponseWriter, r *http.Request) {
validator := validators.NewPaymentQueryValidator()
queryParams := validator.ParseParametersFromRequest(r)
var err error
if validator.HasErrors() {
httperror.BadRequest("request invalid", nil, validator.Errors).Render(w)
return
}
queryParams.Filters = validator.ValidateAndGetPaymentFilters(queryParams.Filters)
if validator.HasErrors() {
httperror.BadRequest("request invalid", nil, validator.Errors).Render(w)
return
}
ctx := r.Context()
response, err := p.getPaymentsWithCount(ctx, queryParams)
if err != nil {
httperror.InternalError(ctx, "Cannot retrieve payments", err, nil).Render(w)
return
}
if response.Total == 0 {
httpjson.RenderStatus(w, http.StatusOK, httpresponse.NewEmptyPaginatedResponse(), httpjson.JSON)
} else {
response, errGet := httpresponse.NewPaginatedResponse(r, response.Result, queryParams.Page, queryParams.PageLimit, response.Total)
if errGet != nil {
httperror.InternalError(ctx, "Cannot create paginated payments response", errGet, nil).Render(w)
return
}
httpjson.RenderStatus(w, http.StatusOK, response, httpjson.JSON)
}
}
func (p PaymentsHandler) RetryPayments(rw http.ResponseWriter, req *http.Request) {
ctx := req.Context()
token, ok := ctx.Value(middleware.TokenContextKey).(string)
if !ok {
httperror.Unauthorized("", nil, nil).Render(rw)
return
}
user, err := p.AuthManager.GetUser(ctx, token)
if err != nil {
httperror.InternalError(ctx, "", err, nil).Render(rw)
return
}
var reqBody RetryPaymentsRequest
if err = httpdecode.DecodeJSON(req, &reqBody); err != nil {
httperror.BadRequest("", err, nil).Render(rw)
return
}
if err := reqBody.validate(); err != nil {
err.Render(rw)
return
}
opts := db.TransactionOptions{
DBConnectionPool: p.DBConnectionPool,
AtomicFunctionWithPostCommit: func(dbTx db.DBTransaction) (postCommitFn db.PostCommitFunction, err error) {
err = p.Models.Payment.RetryFailedPayments(ctx, dbTx, user.Email, reqBody.PaymentIDs...)
if err != nil {
return nil, fmt.Errorf("retrying failed payments: %w", err)
}
// Producing event to send ready payments to TSS
var payments []*data.Payment
payments, err = p.Models.Payment.GetReadyByID(ctx, dbTx, reqBody.PaymentIDs...)
if err != nil {
return nil, fmt.Errorf("getting ready payments by IDs: %w", err)
}
if len(payments) > 0 {
postCommitFn = func() error {
return p.producePaymentsReadyEvents(ctx, payments)
}
}
return postCommitFn, nil
},
}
err = db.RunInTransactionWithPostCommit(ctx, &opts)
if err != nil {
if errors.Is(err, data.ErrMismatchNumRowsAffected) {
httperror.BadRequest("Invalid payment ID(s) provided. All payment IDs must exist and be in the 'FAILED' state.", err, nil).Render(rw)
return
}
httperror.InternalError(ctx, "", err, nil).Render(rw)
return
}
httpjson.RenderStatus(rw, http.StatusOK, map[string]string{"message": "Payments retried successfully"}, httpjson.JSON)
}
func (p PaymentsHandler) producePaymentsReadyEvents(ctx context.Context, payments []*data.Payment) error {
msg, msgErr := events.NewMessage(ctx, events.PaymentReadyToPayTopic, "", events.PaymentReadyToPayRetryFailedPayment, nil)
if msgErr != nil {
return fmt.Errorf("creating a new message: %w", msgErr)
}
paymentsReadyToPay := schemas.EventPaymentsReadyToPayData{TenantID: msg.TenantID}
for _, payment := range payments {
paymentsReadyToPay.Payments = append(paymentsReadyToPay.Payments, schemas.PaymentReadyToPay{ID: payment.ID})
}
msg.Data = paymentsReadyToPay
if p.EventProducer != nil {
err := p.EventProducer.WriteMessages(ctx, *msg)
if err != nil {
return fmt.Errorf("writing message %s on event producer: %w", msg, err)
}
} else {
log.Ctx(ctx).Errorf("event producer is nil, could not publish message %+v", msg)
}
return nil
}
func (p PaymentsHandler) getPaymentsWithCount(ctx context.Context, queryParams *data.QueryParams) (*utils.ResultWithTotal, error) {
return db.RunInTransactionWithResult(ctx, p.DBConnectionPool, nil, func(dbTx db.DBTransaction) (response *utils.ResultWithTotal, innerErr error) {
totalPayments, innerErr := p.Models.Payment.Count(ctx, queryParams, dbTx)
if innerErr != nil {
return nil, fmt.Errorf("error counting payments: %w", innerErr)
}
var payments []data.Payment
if totalPayments != 0 {
payments, innerErr = p.Models.Payment.GetAll(ctx, queryParams, dbTx)
if innerErr != nil {
return nil, fmt.Errorf("error querying payments: %w", innerErr)
}
}
return utils.NewResultWithTotal(totalPayments, payments), nil
})
}
type PatchPaymentStatusRequest struct {
Status string `json:"status"`
}
type UpdatePaymentStatusResponseBody struct {
Message string `json:"message"`
}
func (p PaymentsHandler) PatchPaymentStatus(w http.ResponseWriter, r *http.Request) {
var patchRequest PatchPaymentStatusRequest
err := json.NewDecoder(r.Body).Decode(&patchRequest)
if err != nil {
httperror.BadRequest("invalid request body", err, nil).Render(w)
return
}
// validate request
toStatus, err := data.ToPaymentStatus(patchRequest.Status)
if err != nil {
httperror.BadRequest("invalid status", err, nil).Render(w)
return
}
paymentManagementService := services.NewPaymentManagementService(p.Models, p.DBConnectionPool)
response := UpdatePaymentStatusResponseBody{}
ctx := r.Context()
paymentID := chi.URLParam(r, "id")
switch toStatus {
case data.CanceledPaymentStatus:
err = paymentManagementService.CancelPayment(ctx, paymentID)
response.Message = "Payment canceled"
default:
err = services.ErrPaymentStatusCantBeChanged
}
if err != nil {
switch {
case errors.Is(err, services.ErrPaymentNotFound):
httperror.NotFound(services.ErrPaymentNotFound.Error(), err, nil).Render(w)
case errors.Is(err, services.ErrPaymentNotReadyToCancel):
httperror.BadRequest(services.ErrPaymentNotReadyToCancel.Error(), err, nil).Render(w)
case errors.Is(err, services.ErrPaymentStatusCantBeChanged):
httperror.BadRequest(services.ErrPaymentStatusCantBeChanged.Error(), err, nil).Render(w)
default:
msg := fmt.Sprintf("Cannot update payment ID %s with status: %s", paymentID, toStatus)
httperror.InternalError(ctx, msg, err, nil).Render(w)
}
return
}
httpjson.RenderStatus(w, http.StatusOK, response, httpjson.JSON)
}