github.com/ablease/cli@v6.37.1-0.20180613014814-3adbb7d7fb19+incompatible/api/cloudcontroller/ccv2/errors.go (about)

     1  package ccv2
     2  
     3  import (
     4  	"encoding/json"
     5  	"net/http"
     6  
     7  	"code.cloudfoundry.org/cli/api/cloudcontroller"
     8  	"code.cloudfoundry.org/cli/api/cloudcontroller/ccerror"
     9  )
    10  
    11  // errorWrapper is the wrapper that converts responses with 4xx and 5xx status
    12  // codes to an error.
    13  type errorWrapper struct {
    14  	connection cloudcontroller.Connection
    15  }
    16  
    17  func newErrorWrapper() *errorWrapper {
    18  	return new(errorWrapper)
    19  }
    20  
    21  // Make converts RawHTTPStatusError, which represents responses with 4xx and
    22  // 5xx status codes, to specific errors.
    23  func (e *errorWrapper) Make(request *cloudcontroller.Request, passedResponse *cloudcontroller.Response) error {
    24  	err := e.connection.Make(request, passedResponse)
    25  
    26  	if rawHTTPStatusErr, ok := err.(ccerror.RawHTTPStatusError); ok {
    27  		if passedResponse.HTTPResponse.StatusCode >= http.StatusInternalServerError {
    28  			return convert500(rawHTTPStatusErr)
    29  		}
    30  
    31  		return convert400(rawHTTPStatusErr)
    32  	}
    33  	return err
    34  }
    35  
    36  // Wrap wraps a Cloud Controller connection in this error handling wrapper.
    37  func (e *errorWrapper) Wrap(innerconnection cloudcontroller.Connection) cloudcontroller.Connection {
    38  	e.connection = innerconnection
    39  	return e
    40  }
    41  
    42  func convert400(rawHTTPStatusErr ccerror.RawHTTPStatusError) error {
    43  	// Try to unmarshal the raw error into a CC error. If unmarshaling fails,
    44  	// either we're not talking to a CC, or the CC returned invalid json.
    45  	var errorResponse ccerror.V2ErrorResponse
    46  	err := json.Unmarshal(rawHTTPStatusErr.RawResponse, &errorResponse)
    47  	if err != nil {
    48  		// ccv2/info.go converts this error to an APINotFoundError.
    49  		return ccerror.UnknownHTTPSourceError{StatusCode: rawHTTPStatusErr.StatusCode, RawResponse: rawHTTPStatusErr.RawResponse}
    50  	}
    51  
    52  	switch rawHTTPStatusErr.StatusCode {
    53  	case http.StatusBadRequest: // 400
    54  		return handleBadRequest(errorResponse)
    55  	case http.StatusUnauthorized: // 401
    56  		return handleUnauthorized(errorResponse)
    57  	case http.StatusForbidden: // 403
    58  		return ccerror.ForbiddenError{Message: errorResponse.Description}
    59  	case http.StatusNotFound: // 404
    60  		return ccerror.ResourceNotFoundError{Message: errorResponse.Description}
    61  	case http.StatusUnprocessableEntity: // 422
    62  		return ccerror.UnprocessableEntityError{Message: errorResponse.Description}
    63  	default:
    64  		return ccerror.V2UnexpectedResponseError{
    65  			RequestIDs:      rawHTTPStatusErr.RequestIDs,
    66  			ResponseCode:    rawHTTPStatusErr.StatusCode,
    67  			V2ErrorResponse: errorResponse,
    68  		}
    69  	}
    70  }
    71  
    72  func convert500(rawHTTPStatusErr ccerror.RawHTTPStatusError) error {
    73  	return ccerror.V2UnexpectedResponseError{
    74  		ResponseCode: rawHTTPStatusErr.StatusCode,
    75  		RequestIDs:   rawHTTPStatusErr.RequestIDs,
    76  		V2ErrorResponse: ccerror.V2ErrorResponse{
    77  			Description: string(rawHTTPStatusErr.RawResponse),
    78  		},
    79  	}
    80  }
    81  
    82  func handleBadRequest(errorResponse ccerror.V2ErrorResponse) error {
    83  	switch errorResponse.ErrorCode {
    84  	case "CF-AppStoppedStatsError":
    85  		return ccerror.ApplicationStoppedStatsError{Message: errorResponse.Description}
    86  	case "CF-InstancesError":
    87  		return ccerror.InstancesError{Message: errorResponse.Description}
    88  	case "CF-InvalidRelation":
    89  		return ccerror.InvalidRelationError{Message: errorResponse.Description}
    90  	case "CF-NotStaged":
    91  		return ccerror.NotStagedError{Message: errorResponse.Description}
    92  	case "CF-ServiceBindingAppServiceTaken":
    93  		return ccerror.ServiceBindingTakenError{Message: errorResponse.Description}
    94  	default:
    95  		return ccerror.BadRequestError{Message: errorResponse.Description}
    96  	}
    97  }
    98  
    99  func handleUnauthorized(errorResponse ccerror.V2ErrorResponse) error {
   100  	if errorResponse.ErrorCode == "CF-InvalidAuthToken" {
   101  		return ccerror.InvalidAuthTokenError{Message: errorResponse.Description}
   102  	}
   103  
   104  	return ccerror.UnauthorizedError{Message: errorResponse.Description}
   105  }