aphgrpc

var (
	//ErrDatabaseQuery represents database query related errors
	ErrDatabaseQuery = newError("Database query error")
	//ErrDatabaseInsert represents database insert related errors
	ErrDatabaseInsert = newError("Database insert error")
	//ErrDatabaseUpdate represents database update related errors
	ErrDatabaseUpdate = newError("Database update error")
	//ErrDatabaseDelete represents database update delete errors
	ErrDatabaseDelete = newError("Database delete error")
	//ErrNotFound represents the absence of an HTTP resource
	ErrNotFound = newError("Resource not found")
	//ErrExists represents the presence of an HTTP resource
	ErrExists = newError("Resource already exists")
	//ErrJSONEncoding represents any json encoding error
	ErrJSONEncoding = newError("JSON encoding error")
	//ErrStructMarshal represents any error with marshalling structure
	ErrStructMarshal = newError("Structure marshalling error")
	//ErrIncludeParam represents any error with invalid include query parameter
	ErrIncludeParam = newErrorWithParam("Invalid include query parameter", "include")
	//ErrSparseFieldSets represents any error with invalid sparse fieldsets query parameter
	ErrFields = newErrorWithParam("Invalid field query parameter", "field")
	//ErrFilterParam represents any error with invalid filter query paramter
	ErrFilterParam = newErrorWithParam("Invalid filter query parameter", "filter")
	//ErrNotAcceptable represents any error with wrong or inappropriate http Accept header
	ErrNotAcceptable = newError("Accept header is not acceptable")
	//ErrUnsupportedMedia represents any error with unsupported media type in http header
	ErrUnsupportedMedia = newError("Media type is not supported")
	//ErrInValidParam represents any error with validating input parameters
	ErrInValidParam = newError("Invalid parameters")
	//ErrRetrieveMetadata represents any error to retrieve grpc metadata from the running context
	ErrRetrieveMetadata = errors.New("unable to retrieve metadata")
	//ErrXForwardedHost represents any failure or absence of x-forwarded-host HTTP header in the grpc context
	ErrXForwardedHost = errors.New("x-forwarded-host header is absent")
	//ErrAuthentication represents the absence of valid authentication credentials
	ErrAuthentication = newError("Invalid credentials for authentication")
	//ErrMessagingReply represents any error in request reply messaging
	ErrMessagingReply = newError("messaging reply error")
	//ErrMessagingReq represents any error in request reply messaging
	ErrMessagingReq = newError("messaging request error")
	//ErrMessagingSub represents any error in publish subscribe messaging
	ErrMessagingSub = newError("messaging subscription error")
	//ErrMessagingPub represents any error in publish subscribe messaging
	ErrMessagingPub = newError("messaging publication error")
	//ErrOuthExchange represents any error in exchanging a code for a token with the oauth server
	ErrOauthExchange = newError("Unable to exchange token for code")
	//ErrUserRetrieval represents any error in retrieving user information from an oauth provider
	ErrUserRetrieval = newError("Unable to retrieve user information")
)