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package aws
import (
"bytes"
"encoding/json"
"io"
"io/ioutil"
"net/http"
"reflect"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
type testData struct {
Data string
}
func body(str string) io.ReadCloser {
return ioutil.NopCloser(bytes.NewReader([]byte(str)))
}
func unmarshal(req *Request) {
defer req.HTTPResponse.Body.Close()
if req.Data != nil {
json.NewDecoder(req.HTTPResponse.Body).Decode(req.Data)
}
return
}
func unmarshalError(req *Request) {
bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
if err != nil {
req.Error = err
return
}
if len(bodyBytes) == 0 {
req.Error = APIError{
StatusCode: req.HTTPResponse.StatusCode,
Message: req.HTTPResponse.Status,
}
return
}
var jsonErr jsonErrorResponse
if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
req.Error = err
return
}
req.Error = APIError{
StatusCode: req.HTTPResponse.StatusCode,
Code: jsonErr.Code,
Message: jsonErr.Message,
}
}
type jsonErrorResponse struct {
Code string `json:"__type"`
Message string `json:"message"`
}
func TestRequestRecoverRetry(t *testing.T) {
reqNum := 0
reqs := []http.Response{
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 200, Body: body(`{"data":"valid"}`)},
}
s := NewService(&Config{MaxRetries: -1})
s.Handlers.Unmarshal.PushBack(unmarshal)
s.Handlers.UnmarshalError.PushBack(unmarshalError)
s.Handlers.Send.Init() // mock sending
s.Handlers.Send.PushBack(func(r *Request) {
r.HTTPResponse = &reqs[reqNum]
reqNum++
})
out := &testData{}
r := NewRequest(s, &Operation{Name: "Operation"}, nil, out)
err := r.Send()
assert.Nil(t, err)
assert.Equal(t, 2, int(r.RetryCount))
assert.Equal(t, "valid", out.Data)
}
func TestRequestExhaustRetries(t *testing.T) {
delays := []time.Duration{}
sleepDelay = func(delay time.Duration) {
delays = append(delays, delay)
}
reqNum := 0
reqs := []http.Response{
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
http.Response{StatusCode: 500, Body: body(`{"__type":"UnknownError","message":"An error occurred."}`)},
}
s := NewService(&Config{MaxRetries: -1})
s.Handlers.Unmarshal.PushBack(unmarshal)
s.Handlers.UnmarshalError.PushBack(unmarshalError)
s.Handlers.Send.Init() // mock sending
s.Handlers.Send.PushBack(func(r *Request) {
r.HTTPResponse = &reqs[reqNum]
reqNum++
})
r := NewRequest(s, &Operation{Name: "Operation"}, nil, nil)
err := r.Send()
apiErr := Error(err)
assert.NotNil(t, err)
assert.NotNil(t, apiErr)
assert.Equal(t, 500, apiErr.StatusCode)
assert.Equal(t, "UnknownError", apiErr.Code)
assert.Equal(t, "An error occurred.", apiErr.Message)
assert.Equal(t, 3, int(r.RetryCount))
assert.True(t, reflect.DeepEqual([]time.Duration{30 * time.Millisecond, 60 * time.Millisecond, 120 * time.Millisecond}, delays))
}
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