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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| package customtokens | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "io" | ||
| "net/http" | ||
| ) | ||
|
|
||
| type USDCService struct { | ||
| attestationApi string | ||
| } | ||
|
|
||
| type USDCAttestationResponse struct { | ||
| Status USDCAttestationStatus `json:"status"` | ||
| Attestation string `json:"attestation"` | ||
| } | ||
|
|
||
| const ( | ||
| version = "v1" | ||
| attestationPath = "attestations" | ||
| ) | ||
|
|
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| type USDCAttestationStatus string | ||
|
|
||
| const ( | ||
| USDCAttestationStatusSuccess USDCAttestationStatus = "complete" | ||
| USDCAttestationStatusPending USDCAttestationStatus = "pending_confirmations" | ||
| ) | ||
|
|
||
| func NewUSDCService(usdcAttestationApi string) *USDCService { | ||
| return &USDCService{attestationApi: usdcAttestationApi} | ||
| } | ||
|
|
||
| func (usdc *USDCService) TryGetAttestation(messageHash string) (USDCAttestationResponse, error) { | ||
| fullAttestationUrl := fmt.Sprintf("%s/%s/%s/%s", usdc.attestationApi, version, attestationPath, messageHash) | ||
| req, err := http.NewRequest("GET", fullAttestationUrl, nil) | ||
| if err != nil { | ||
| return USDCAttestationResponse{}, err | ||
| } | ||
| req.Header.Add("accept", "application/json") | ||
| res, err := http.DefaultClient.Do(req) | ||
| if err != nil { | ||
| return USDCAttestationResponse{}, err | ||
| } | ||
| defer res.Body.Close() | ||
| body, err := io.ReadAll(res.Body) | ||
| if err != nil { | ||
| return USDCAttestationResponse{}, err | ||
| } | ||
|
|
||
| var response USDCAttestationResponse | ||
| err = json.Unmarshal(body, &response) | ||
| if err != nil { | ||
| return USDCAttestationResponse{}, err | ||
| } | ||
|
|
||
| return response, nil | ||
| } | ||
|
|
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| func (usdc *USDCService) IsAttestationComplete(messageHash string) (bool, string, error) { | ||
| response, err := usdc.TryGetAttestation(messageHash) | ||
| if err != nil { | ||
| return false, "", err | ||
| } | ||
| if response.Status == USDCAttestationStatusSuccess { | ||
| return true, response.Attestation, nil | ||
| } | ||
| return false, "", nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package customtokens | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "net/http" | ||
| "net/http/httptest" | ||
| "testing" | ||
|
|
||
| "github.com/stretchr/testify/require" | ||
| ) | ||
|
|
||
| func TestUSDCService_TryGetAttestation(t *testing.T) { | ||
| t.Skipf("Skipping test because it uses the real USDC attestation API") | ||
| usdcMessageHash := "0x912f22a13e9ccb979b621500f6952b2afd6e75be7eadaed93fc2625fe11c52a2" | ||
| usdcService := NewUSDCService("https://iris-api-sandbox.circle.com") | ||
|
|
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| attestation, err := usdcService.TryGetAttestation(usdcMessageHash) | ||
| require.NoError(t, err) | ||
|
|
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| require.Equal(t, USDCAttestationStatusPending, attestation.Status) | ||
| require.Equal(t, "PENDING", attestation.Attestation) | ||
| } | ||
|
|
||
| func TestUSDCService_TryGetAttestationMock(t *testing.T) { | ||
| response := USDCAttestationResponse{ | ||
| Status: USDCAttestationStatusSuccess, | ||
| Attestation: "720502893578a89a8a87982982ef781c18b193", | ||
| } | ||
|
|
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| ts := getMockUSDCEndpoint(t, response) | ||
| defer ts.Close() | ||
|
|
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| usdcService := NewUSDCService(ts.URL) | ||
| attestation, err := usdcService.TryGetAttestation("0x912f22a13e9ccb979b621500f6952b2afd6e75be7eadaed93fc2625fe11c52a2") | ||
| require.NoError(t, err) | ||
|
|
||
| require.Equal(t, response.Status, attestation.Status) | ||
| require.Equal(t, response.Attestation, attestation.Attestation) | ||
| } | ||
|
|
||
| func TestUSDCService_TryGetAttestationMockError(t *testing.T) { | ||
| ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| w.WriteHeader(http.StatusInternalServerError) | ||
| })) | ||
| defer ts.Close() | ||
|
|
||
| usdcService := NewUSDCService(ts.URL) | ||
| _, err := usdcService.TryGetAttestation("0x912f22a13e9ccb979b621500f6952b2afd6e75be7eadaed93fc2625fe11c52a2") | ||
| require.Error(t, err) | ||
| } | ||
|
|
||
| func TestUSDCService_IsAttestationComplete(t *testing.T) { | ||
| response := USDCAttestationResponse{ | ||
| Status: USDCAttestationStatusSuccess, | ||
| Attestation: "720502893578a89a8a87982982ef781c18b193", | ||
| } | ||
|
|
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| ts := getMockUSDCEndpoint(t, response) | ||
| defer ts.Close() | ||
|
|
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| usdcService := NewUSDCService(ts.URL) | ||
| isReady, attestation, err := usdcService.IsAttestationComplete("0x912f22a13e9ccb979b621500f6952b2afd6e75be7eadaed93fc2625fe11c52a2") | ||
| require.NoError(t, err) | ||
|
|
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| require.True(t, isReady) | ||
| require.Equal(t, response.Attestation, attestation) | ||
| } | ||
|
|
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| func getMockUSDCEndpoint(t *testing.T, response USDCAttestationResponse) *httptest.Server { | ||
| responseBytes, err := json.Marshal(response) | ||
| require.NoError(t, err) | ||
|
|
||
| return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { | ||
| _, err := w.Write(responseBytes) | ||
| require.NoError(t, err) | ||
| })) | ||
| } |
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