// UnmarshalError unmarshals a response error for the REST JSON protocol.
func UnmarshalError(r *service.Request) {
code := r.HTTPResponse.Header.Get("X-Amzn-Errortype")
bodyBytes, err := ioutil.ReadAll(r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.New("SerializationError", "failed reading REST JSON error response", err)
return
}
if len(bodyBytes) == 0 {
r.Error = awserr.NewRequestFailure(
awserr.New("SerializationError", r.HTTPResponse.Status, nil),
r.HTTPResponse.StatusCode,
"",
)
return
}
var jsonErr jsonErrorResponse
if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
r.Error = awserr.New("SerializationError", "failed decoding REST JSON error response", err)
return
}
if code == "" {
code = jsonErr.Code
}
codes := strings.SplitN(code, ":", 2)
r.Error = awserr.NewRequestFailure(
awserr.New(codes[0], jsonErr.Message, nil),
r.HTTPResponse.StatusCode,
"",
)
}
func TestConvertFromListError(t *testing.T) {
// Test that we get an error using ConvertFromList to convert to a map.
var actual map[string]interface{}
expected := awserr.New("SerializationError", `v must be a non-nil pointer to an array or slice, got *map[string]interface {}`, nil).Error()
if err := ConvertFromList(nil, &actual); err == nil {
t.Errorf("ConvertFromList with input %#v returned no error, expected error `%s`", nil, expected)
} else if err.Error() != expected {
t.Errorf("ConvertFromList with input %#v returned error `%s`, expected error `%s`", nil, err, expected)
}
// Test that we get an error using ConvertFromList to convert to a struct.
var actual2 myComplexStruct
expected = awserr.New("SerializationError", `v must be a non-nil pointer to an array or slice, got *dynamodbattribute.myComplexStruct`, nil).Error()
if err := ConvertFromList(nil, &actual2); err == nil {
t.Errorf("ConvertFromList with input %#v returned no error, expected error `%s`", nil, expected)
} else if err.Error() != expected {
t.Errorf("ConvertFromList with input %#v returned error `%s`, expected error `%s`", nil, err, expected)
}
// Test that we get an error using ConvertFromList to convert to an interface{}.
var actual3 interface{}
expected = awserr.New("SerializationError", `v must be a non-nil pointer to an array or slice, got *interface {}`, nil).Error()
if err := ConvertFromList(nil, &actual3); err == nil {
t.Errorf("ConvertFromList with input %#v returned no error, expected error `%s`", nil, expected)
} else if err.Error() != expected {
t.Errorf("ConvertFromList with input %#v returned error `%s`, expected error `%s`", nil, err, expected)
}
}
func unmarshalError(req *Request) {
bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
if err != nil {
req.Error = awserr.New("UnmarshaleError", req.HTTPResponse.Status, err)
return
}
if len(bodyBytes) == 0 {
req.Error = awserr.NewRequestFailure(
awserr.New("UnmarshaleError", req.HTTPResponse.Status, fmt.Errorf("empty body")),
req.HTTPResponse.StatusCode,
"",
)
return
}
var jsonErr jsonErrorResponse
if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
req.Error = awserr.New("UnmarshaleError", "JSON unmarshal", err)
return
}
req.Error = awserr.NewRequestFailure(
awserr.New(jsonErr.Code, jsonErr.Message, nil),
req.HTTPResponse.StatusCode,
"",
)
}
func TestAfterRetryRefreshCreds(t *testing.T) {
os.Clearenv()
credProvider := &mockCredsProvider{}
svc := NewService(&aws.Config{Credentials: credentials.NewCredentials(credProvider), MaxRetries: aws.Int(1)})
svc.Handlers.Clear()
svc.Handlers.ValidateResponse.PushBack(func(r *Request) {
r.Error = awserr.New("UnknownError", "", nil)
r.HTTPResponse = &http.Response{StatusCode: 400}
})
svc.Handlers.UnmarshalError.PushBack(func(r *Request) {
r.Error = awserr.New("ExpiredTokenException", "", nil)
})
svc.Handlers.AfterRetry.PushBack(func(r *Request) {
AfterRetryHandler(r)
})
assert.True(t, svc.Config.Credentials.IsExpired(), "Expect to start out expired")
assert.False(t, credProvider.retrieveCalled)
req := NewRequest(svc, &Operation{Name: "Operation"}, nil, nil)
req.Send()
assert.True(t, svc.Config.Credentials.IsExpired())
assert.False(t, credProvider.retrieveCalled)
_, err := svc.Config.Credentials.Get()
assert.NoError(t, err)
assert.True(t, credProvider.retrieveCalled)
}
// UnmarshalError unmarshals an error response for a JSON RPC service.
func UnmarshalError(req *service.Request) {
defer req.HTTPResponse.Body.Close()
bodyBytes, err := ioutil.ReadAll(req.HTTPResponse.Body)
if err != nil {
req.Error = awserr.New("SerializationError", "failed reading JSON RPC error response", err)
return
}
if len(bodyBytes) == 0 {
req.Error = awserr.NewRequestFailure(
awserr.New("SerializationError", req.HTTPResponse.Status, nil),
req.HTTPResponse.StatusCode,
"",
)
return
}
var jsonErr jsonErrorResponse
if err := json.Unmarshal(bodyBytes, &jsonErr); err != nil {
req.Error = awserr.New("SerializationError", "failed decoding JSON RPC error response", err)
return
}
codes := strings.SplitN(jsonErr.Code, "#", 2)
req.Error = awserr.NewRequestFailure(
awserr.New(codes[len(codes)-1], jsonErr.Message, nil),
req.HTTPResponse.StatusCode,
"",
)
}
// loadProfiles loads from the file pointed to by shared credentials filename for profile.
// The credentials retrieved from the profile will be returned or error. Error will be
// returned if it fails to read from the file, or the data is invalid.
func loadProfile(filename, profile string) (Value, error) {
config, err := ini.LoadFile(filename)
if err != nil {
return Value{}, awserr.New("SharedCredsLoad", "failed to load shared credentials file", err)
}
iniProfile := config.Section(profile)
id, ok := iniProfile["aws_access_key_id"]
if !ok {
return Value{}, awserr.New("SharedCredsAccessKey",
fmt.Sprintf("shared credentials %s in %s did not contain aws_access_key_id", profile, filename),
nil)
}
secret, ok := iniProfile["aws_secret_access_key"]
if !ok {
return Value{}, awserr.New("SharedCredsSecret",
fmt.Sprintf("shared credentials %s in %s did not contain aws_secret_access_key", profile, filename),
nil)
}
token := iniProfile["aws_session_token"]
return Value{
AccessKeyID: id,
SecretAccessKey: secret,
SessionToken: token,
}, nil
}
func unmarshalError(r *service.Request) {
defer r.HTTPResponse.Body.Close()
if r.HTTPResponse.ContentLength == int64(0) {
// No body, use status code to generate an awserr.Error
r.Error = awserr.NewRequestFailure(
awserr.New(strings.Replace(r.HTTPResponse.Status, " ", "", -1), r.HTTPResponse.Status, nil),
r.HTTPResponse.StatusCode,
"",
)
return
}
resp := &xmlErrorResponse{}
err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
if err != nil && err != io.EOF {
r.Error = awserr.New("SerializationError", "failed to decode S3 XML error response", nil)
} else {
r.Error = awserr.NewRequestFailure(
awserr.New(resp.Code, resp.Message, nil),
r.HTTPResponse.StatusCode,
"",
)
}
}
func TestChainProviderWithNoValidProvider(t *testing.T) {
p := &ChainProvider{
Providers: []Provider{
&stubProvider{err: awserr.New("FirstError", "first provider error", nil)},
&stubProvider{err: awserr.New("SecondError", "second provider error", nil)},
},
}
assert.True(t, p.IsExpired(), "Expect expired with no providers")
_, err := p.Retrieve()
assert.Equal(t, ErrNoValidProvidersFoundInChain, err, "Expect no providers error returned")
}
// UnmarshalError unmarshals a response error for the EC2 protocol.
func UnmarshalError(r *service.Request) {
defer r.HTTPResponse.Body.Close()
resp := &xmlErrorResponse{}
err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
if err != nil && err != io.EOF {
r.Error = awserr.New("SerializationError", "failed decoding EC2 Query error response", err)
} else {
r.Error = awserr.NewRequestFailure(
awserr.New(resp.Code, resp.Message, nil),
r.HTTPResponse.StatusCode,
resp.RequestID,
)
}
}
// SendHandler is a request handler to send service request using HTTP client.
func SendHandler(r *Request) {
var err error
r.HTTPResponse, err = r.Service.Config.HTTPClient.Do(r.HTTPRequest)
if err != nil {
// Capture the case where url.Error is returned for error processing
// response. e.g. 301 without location header comes back as string
// error and r.HTTPResponse is nil. Other url redirect errors will
// comeback in a similar method.
if e, ok := err.(*url.Error); ok {
if s := reStatusCode.FindStringSubmatch(e.Error()); s != nil {
code, _ := strconv.ParseInt(s[1], 10, 64)
r.HTTPResponse = &http.Response{
StatusCode: int(code),
Status: http.StatusText(int(code)),
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}
return
}
}
if r.HTTPResponse == nil {
// Add a dummy request response object to ensure the HTTPResponse
// value is consistent.
r.HTTPResponse = &http.Response{
StatusCode: int(0),
Status: http.StatusText(int(0)),
Body: ioutil.NopCloser(bytes.NewReader([]byte{})),
}
}
// Catch all other request errors.
r.Error = awserr.New("RequestError", "send request failed", err)
r.Retryable = aws.Bool(true) // network errors are retryable
}
}
// Build builds a JSON payload for a JSON RPC request.
func Build(req *service.Request) {
var buf []byte
var err error
if req.ParamsFilled() {
buf, err = jsonutil.BuildJSON(req.Params)
if err != nil {
req.Error = awserr.New("SerializationError", "failed encoding JSON RPC request", err)
return
}
} else {
buf = emptyJSON
}
if req.Service.TargetPrefix != "" || string(buf) != "{}" {
req.SetBufferBody(buf)
}
if req.Service.TargetPrefix != "" {
target := req.Service.TargetPrefix + "." + req.Operation.Name
req.HTTPRequest.Header.Add("X-Amz-Target", target)
}
if req.Service.JSONVersion != "" {
jsonVersion := req.Service.JSONVersion
req.HTTPRequest.Header.Add("Content-Type", "application/x-amz-json-"+jsonVersion)
}
}
// Retrieve retrieves credentials from the EC2 service.
// Error will be returned if the request fails, or unable to extract
// the desired credentials.
func (m *EC2RoleProvider) Retrieve() (credentials.Value, error) {
if m.Client == nil {
m.Client = ec2metadata.New(nil)
}
credsList, err := requestCredList(m.Client)
if err != nil {
return credentials.Value{}, err
}
if len(credsList) == 0 {
return credentials.Value{}, awserr.New("EmptyEC2RoleList", "empty EC2 Role list", nil)
}
credsName := credsList[0]
roleCreds, err := requestCred(m.Client, credsName)
if err != nil {
return credentials.Value{}, err
}
m.SetExpiration(roleCreds.Expiration, m.ExpiryWindow)
return credentials.Value{
AccessKeyID: roleCreds.AccessKeyID,
SecretAccessKey: roleCreds.SecretAccessKey,
SessionToken: roleCreds.Token,
}, nil
}
func buildHeader(r *service.Request, v reflect.Value, name string) {
str, err := convertType(v)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to encode REST request", err)
} else if str != nil {
r.HTTPRequest.Header.Add(name, *str)
}
}
func buildQueryString(r *service.Request, v reflect.Value, name string, query url.Values) {
str, err := convertType(v)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to encode REST request", err)
} else if str != nil {
query.Set(name, *str)
}
}
// requestCredList requests a list of credentials from the EC2 service.
// If there are no credentials, or there is an error making or receiving the request
func requestCredList(client *ec2metadata.Client) ([]string, error) {
resp, err := client.GetMetadata(iamSecurityCredsPath)
if err != nil {
return nil, awserr.New("EC2RoleRequestError", "failed to list EC2 Roles", err)
}
credsList := []string{}
s := bufio.NewScanner(strings.NewReader(resp))
for s.Scan() {
credsList = append(credsList, s.Text())
}
if err := s.Err(); err != nil {
return nil, awserr.New("SerializationError", "failed to read list of EC2 Roles", err)
}
return credsList, nil
}
func unmarshalError(r *service.Request) {
defer r.HTTPResponse.Body.Close()
_, err := ioutil.ReadAll(r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.New("SerializationError", "unable to unmarshal EC2 metadata error respose", err)
}
// TODO extract the error...
}
// Unmarshal unmarshals a response for a JSON RPC service.
func Unmarshal(req *service.Request) {
defer req.HTTPResponse.Body.Close()
if req.DataFilled() {
err := jsonutil.UnmarshalJSON(req.Data, req.HTTPResponse.Body)
if err != nil {
req.Error = awserr.New("SerializationError", "failed decoding JSON RPC response", err)
}
}
return
}
func unmarshalHandler(r *service.Request) {
defer r.HTTPResponse.Body.Close()
b, err := ioutil.ReadAll(r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.New("SerializationError", "unable to unmarshal EC2 metadata respose", err)
}
data := r.Data.(*metadataOutput)
data.Content = string(b)
}
func TestConvertFromMapError(t *testing.T) {
// Test that we get an error using ConvertFromMap to convert to an interface{}.
var actual interface{}
expected := awserr.New("SerializationError", `v must be a non-nil pointer to a map[string]interface{} or struct, got *interface {}`, nil).Error()
if err := ConvertFromMap(nil, &actual); err == nil {
t.Errorf("ConvertFromMap with input %#v returned no error, expected error `%s`", nil, expected)
} else if err.Error() != expected {
t.Errorf("ConvertFromMap with input %#v returned error `%s`, expected error `%s`", nil, err, expected)
}
// Test that we get an error using ConvertFromMap to convert to a slice.
var actual2 []interface{}
expected = awserr.New("SerializationError", `v must be a non-nil pointer to a map[string]interface{} or struct, got *[]interface {}`, nil).Error()
if err := ConvertFromMap(nil, &actual2); err == nil {
t.Errorf("ConvertFromMap with input %#v returned no error, expected error `%s`", nil, expected)
} else if err.Error() != expected {
t.Errorf("ConvertFromMap with input %#v returned error `%s`, expected error `%s`", nil, err, expected)
}
}
// internal logic for deciding whether to upload a single part or use a
// multipart upload.
func (u *uploader) upload() (*UploadOutput, error) {
u.init()
if u.opts.PartSize < MinUploadPartSize {
msg := fmt.Sprintf("part size must be at least %d bytes", MinUploadPartSize)
return nil, awserr.New("ConfigError", msg, nil)
}
// Do one read to determine if we have more than one part
buf, err := u.nextReader()
if err == io.EOF || err == io.ErrUnexpectedEOF { // single part
return u.singlePart(buf)
} else if err != nil {
return nil, awserr.New("ReadRequestBody", "read upload data failed", err)
}
mu := multiuploader{uploader: u}
return mu.upload(buf)
}
func buildHeaderMap(r *service.Request, v reflect.Value, prefix string) {
for _, key := range v.MapKeys() {
str, err := convertType(v.MapIndex(key))
if err != nil {
r.Error = awserr.New("SerializationError", "failed to encode REST request", err)
} else if str != nil {
r.HTTPRequest.Header.Add(prefix+key.String(), *str)
}
}
}
func buildURI(r *service.Request, v reflect.Value, name string) {
value, err := convertType(v)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to encode REST request", err)
} else if value != nil {
uri := r.HTTPRequest.URL.Path
uri = strings.Replace(uri, "{"+name+"}", EscapePath(*value, true), -1)
uri = strings.Replace(uri, "{"+name+"+}", EscapePath(*value, false), -1)
r.HTTPRequest.URL.Path = uri
}
}
// Unmarshal unmarshals a payload response for the REST XML protocol.
func Unmarshal(r *service.Request) {
if t := rest.PayloadType(r.Data); t == "structure" || t == "" {
defer r.HTTPResponse.Body.Close()
decoder := xml.NewDecoder(r.HTTPResponse.Body)
err := xmlutil.UnmarshalXML(r.Data, decoder, "")
if err != nil {
r.Error = awserr.New("SerializationError", "failed to decode REST XML response", err)
return
}
}
}
// Unmarshal unmarshals a response for an AWS Query service.
func Unmarshal(r *service.Request) {
defer r.HTTPResponse.Body.Close()
if r.DataFilled() {
decoder := xml.NewDecoder(r.HTTPResponse.Body)
err := xmlutil.UnmarshalXML(r.Data, decoder, r.Operation.Name+"Result")
if err != nil {
r.Error = awserr.New("SerializationError", "failed decoding Query response", err)
return
}
}
}
// ConvertFromMap accepts a map[string]*dynamodb.AttributeValue and converts it to a
// map[string]interface{} or struct.
//
// If v points to a struct, the result is first converted it to a
// map[string]interface{}, then JSON encoded/decoded it to convert to a struct,
// so `json` struct tags are respected.
func ConvertFromMap(item map[string]*dynamodb.AttributeValue, v interface{}) (err error) {
defer func() {
if r := recover(); r != nil {
if e, ok := r.(runtime.Error); ok {
err = e
} else if s, ok := r.(string); ok {
err = fmt.Errorf(s)
} else {
err = r.(error)
}
item = nil
}
}()
rv := reflect.ValueOf(v)
if rv.Kind() != reflect.Ptr || rv.IsNil() {
return awserr.New("SerializationError",
fmt.Sprintf("v must be a non-nil pointer to a map[string]interface{} or struct, got %s",
rv.Type()),
nil)
}
if rv.Elem().Kind() != reflect.Struct && !(rv.Elem().Kind() == reflect.Map && rv.Elem().Type().Key().Kind() == reflect.String) {
return awserr.New("SerializationError",
fmt.Sprintf("v must be a non-nil pointer to a map[string]interface{} or struct, got %s",
rv.Type()),
nil)
}
m := make(map[string]interface{})
for k, v := range item {
m[k] = convertFrom(v)
}
if isTyped(reflect.TypeOf(v)) {
err = convertToTyped(m, v)
} else {
rv.Elem().Set(reflect.ValueOf(m))
}
return err
}
// ConvertFromList accepts a []*dynamodb.AttributeValue and converts it to an array or
// slice.
//
// If v contains any structs, the result is first converted it to a
// []interface{}, then JSON encoded/decoded it to convert to a typed array or
// slice, so `json` struct tags are respected.
func ConvertFromList(item []*dynamodb.AttributeValue, v interface{}) (err error) {
defer func() {
if r := recover(); r != nil {
if e, ok := r.(runtime.Error); ok {
err = e
} else if s, ok := r.(string); ok {
err = fmt.Errorf(s)
} else {
err = r.(error)
}
item = nil
}
}()
rv := reflect.ValueOf(v)
if rv.Kind() != reflect.Ptr || rv.IsNil() {
return awserr.New("SerializationError",
fmt.Sprintf("v must be a non-nil pointer to an array or slice, got %s",
rv.Type()),
nil)
}
if rv.Elem().Kind() != reflect.Array && rv.Elem().Kind() != reflect.Slice {
return awserr.New("SerializationError",
fmt.Sprintf("v must be a non-nil pointer to an array or slice, got %s",
rv.Type()),
nil)
}
l := make([]interface{}, 0, len(item))
for _, v := range item {
l = append(l, convertFrom(v))
}
if isTyped(reflect.TypeOf(v)) {
err = convertToTyped(l, v)
} else {
rv.Elem().Set(reflect.ValueOf(l))
}
return err
}
// ValidateParameters is a request handler to validate the input parameters.
// Validating parameters only has meaning if done prior to the request being sent.
func ValidateParameters(r *Request) {
if r.ParamsFilled() {
v := validator{errors: []string{}}
v.validateAny(reflect.ValueOf(r.Params), "")
if count := len(v.errors); count > 0 {
format := "%d validation errors:\n- %s"
msg := fmt.Sprintf(format, count, strings.Join(v.errors, "\n- "))
r.Error = awserr.New("InvalidParameter", msg, nil)
}
}
}
func TestChainProviderGet(t *testing.T) {
p := &ChainProvider{
Providers: []Provider{
&stubProvider{err: awserr.New("FirstError", "first provider error", nil)},
&stubProvider{err: awserr.New("SecondError", "second provider error", nil)},
&stubProvider{
creds: Value{
AccessKeyID: "AKID",
SecretAccessKey: "SECRET",
SessionToken: "",
},
},
},
}
creds, err := p.Retrieve()
assert.Nil(t, err, "Expect no error")
assert.Equal(t, "AKID", creds.AccessKeyID, "Expect access key ID to match")
assert.Equal(t, "SECRET", creds.SecretAccessKey, "Expect secret access key to match")
assert.Empty(t, creds.SessionToken, "Expect session token to be empty")
}
// ConvertToList accepts an array or slice and converts it to a
// []*dynamodb.AttributeValue.
//
// If in contains any structs, it is first JSON encoded/decoded it to convert it
// to a []interface{}, so `json` struct tags are respected.
func ConvertToList(in interface{}) (item []*dynamodb.AttributeValue, err error) {
defer func() {
if r := recover(); r != nil {
if e, ok := r.(runtime.Error); ok {
err = e
} else if s, ok := r.(string); ok {
err = fmt.Errorf(s)
} else {
err = r.(error)
}
item = nil
}
}()
if in == nil {
return nil, awserr.New("SerializationError",
"in must be an array or slice, got <nil>",
nil)
}
v := reflect.ValueOf(in)
if v.Kind() != reflect.Array && v.Kind() != reflect.Slice {
return nil, awserr.New("SerializationError",
fmt.Sprintf("in must be an array or slice, got %s",
v.Type().String()),
nil)
}
if isTyped(reflect.TypeOf(in)) {
var out []interface{}
in = convertToUntyped(in, out)
}
item = make([]*dynamodb.AttributeValue, 0, len(in.([]interface{})))
for _, v := range in.([]interface{}) {
item = append(item, convertTo(v))
}
return item, nil
}
func unmarshalBody(r *service.Request, v reflect.Value) {
if field, ok := v.Type().FieldByName("SDKShapeTraits"); ok {
if payloadName := field.Tag.Get("payload"); payloadName != "" {
pfield, _ := v.Type().FieldByName(payloadName)
if ptag := pfield.Tag.Get("type"); ptag != "" && ptag != "structure" {
payload := v.FieldByName(payloadName)
if payload.IsValid() {
switch payload.Interface().(type) {
case []byte:
b, err := ioutil.ReadAll(r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to decode REST response", err)
} else {
payload.Set(reflect.ValueOf(b))
}
case *string:
b, err := ioutil.ReadAll(r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to decode REST response", err)
} else {
str := string(b)
payload.Set(reflect.ValueOf(&str))
}
default:
switch payload.Type().String() {
case "io.ReadSeeker":
payload.Set(reflect.ValueOf(aws.ReadSeekCloser(r.HTTPResponse.Body)))
case "aws.ReadSeekCloser", "io.ReadCloser":
payload.Set(reflect.ValueOf(r.HTTPResponse.Body))
default:
r.Error = awserr.New("SerializationError",
"failed to decode REST response",
fmt.Errorf("unknown payload type %s", payload.Type()))
}
}
}
}
}
}
}