mirror of
https://github.com/hanzo-fi/payments.git
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Maxence MaireauxandGitHub
5a241a5de2
Add network-scoped symbol resolution (e.g. BASEUSDC → USDC) to handle Coinbase Prime assets that expose network aliases. Introduce thread-safe lazy loading of currencies via sync.Mutex with double-checked locking pattern (ensureCurrencies). Document gross amount convention across models and connector template.
78 lines
2.3 KiB
Plaintext
78 lines
2.3 KiB
Plaintext
package {{ .Connector }}
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import (
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"context"
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"encoding/json"
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"github.com/formancehq/payments/internal/models"
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"github.com/formancehq/payments/internal/utils/pagination"
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)
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type paymentsState struct {
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// TODO: paymentsState will be used to know at what point we're at when
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// fetching the PSP payments. We highly recommend to use this state to not
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// poll data already polled.
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// This struct will be stored as a raw json, you're free to put whatever
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// you want.
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// Example:
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// LastPage int `json:"lastPage"`
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// LastIDCreated int64 `json:"lastIDCreated"`
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}
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func (p *Plugin) fetchNextPayments(ctx context.Context, req models.FetchNextPaymentsRequest) (models.FetchNextPaymentsResponse, error) {
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var oldState paymentsState
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if req.State != nil {
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if err := json.Unmarshal(req.State, &oldState); err != nil {
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return models.FetchNextPaymentsResponse{}, err
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}
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}
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// TODO: if needed, uncomment the following lines to get the related account in request
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// var from models.PSPAccount
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// if req.FromPayload == nil {
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// return models.FetchNextPaymentsResponse{}, models.ErrMissingFromPayloadInRequest
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// }
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// if err := json.Unmarshal(req.FromPayload, &from); err != nil {
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// return models.FetchNextPaymentsResponse{}, err
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// }
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newState := paymentsState{
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// TODO: fill new state with old state values
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}
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payments := make([]models.PSPPayment, 0, req.PageSize)
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needMore := false
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hasMore := false
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for /* TODO: range over pages or others */ page := 0; ; page++ {
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pagedTransactions, err := p.client.GetTransactions(ctx, page, req.PageSize)
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if err != nil {
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return models.FetchNextPaymentsResponse{}, err
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}
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// TODO: transfer PSP object into formance object.
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// Use gross amount convention: report the full amount before any fee
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// deduction. Store PSP fees in metadata, never subtract them from Amount.
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payments = append(payments, models.PSPPayment{})
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needMore, hasMore = pagination.ShouldFetchMore(payments, pagedTransactions, req.PageSize)
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if !needMore || !hasMore {
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break
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}
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}
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if !needMore {
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payments = payments[:req.PageSize]
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}
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// TODO: don't forget to update your state accordingly
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payload, err := json.Marshal(newState)
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if err != nil {
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return models.FetchNextPaymentsResponse{}, err
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}
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return models.FetchNextPaymentsResponse{
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Payments: payments,
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NewState: payload,
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HasMore: hasMore,
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}, nil
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} |