// Retrieve returns the credentials value or error if no provider returned
// without error.
//
// If a provider is found it will be cached and any calls to IsExpired()
// will return the expired state of the cached provider.
func (c *ChainProvider) Retrieve() (Value, error) {
var errs []error
for _, p := range c.Providers {
creds, err := p.Retrieve()
if err == nil {
c.curr = p
return creds, nil
}
errs = append(errs, err)
}
c.curr = nil
var err error
err = ErrNoValidProvidersFoundInChain
if c.VerboseErrors {
err = awserr.NewBatchError("NoCredentialProviders", "no valid providers in chain", errs)
}
return Value{}, err
}
func TestChainProviderWithNoValidProviderWithVerboseEnabled(t *testing.T) {
errs := []error{
awserr.New("FirstError", "first provider error", nil),
awserr.New("SecondError", "second provider error", nil),
}
p := &ChainProvider{
VerboseErrors: true,
Providers: []Provider{
&stubProvider{err: errs[0]},
&stubProvider{err: errs[1]},
},
}
assert.True(t, p.IsExpired(), "Expect expired with no providers")
_, err := p.Retrieve()
assert.Equal(t,
awserr.NewBatchError("NoCredentialProviders", "no valid providers in chain", errs),
err,
"Expect no providers error returned")
}
func unmarshalInvalidChangeBatchError(r *request.Request, requestBody []byte) {
resp := &invalidChangeBatchXMLErrorResponse{}
err := xml.Unmarshal(requestBody, resp)
if err != nil {
r.Error = awserr.New("SerializationError", "failed to decode query XML error response", err)
return
}
const errorCode = "InvalidChangeBatch"
errors := []error{}
for _, msg := range resp.Messages {
errors = append(errors, awserr.New(errorCode, msg, nil))
}
r.Error = awserr.NewRequestFailure(
awserr.NewBatchError(errorCode, "ChangeBatch errors occurred", errors),
r.HTTPResponse.StatusCode,
r.RequestID,
)
}
// OrigErr returns the invalid parameters as a awserr.BatchedErrors value
func (e ErrInvalidParams) OrigErr() error {
return awserr.NewBatchError(
InvalidParameterErrCode, e.Message(), e.OrigErrs())
}