denier adapter is designed to always return a denial to precondition
checks. You can specify the exact error to return for these denials.
This adapter supports the checknothing template, the listentry template, and the quota template.
Configuration format for the Denier adapter.
Status type defines a logical error model that is suitable for
different programming environments, including REST APIs and RPC APIs. It is
used by gRPC. The error model is designed to be:
- Simple to use and understand for most users
- Flexible enough to meet unexpected needs
Status message contains three pieces of data: error code, error
message, and error details. The error code should be an enum value of
google.rpc.Code, but it may accept additional error codes
if needed. The error message should be a developer-facing English message
that helps developers understand and resolve the error. If a localized
user-facing error message is needed, put the localized message in the error
details or localize it in the client. The optional error details may contain
arbitrary information about the error. There is a predefined set of error
detail types in the package
google.rpc that can be used for common error
Status message is the logical representation of the error model, but it
is not necessarily the actual wire format. When the
Status message is
exposed in different client libraries and different wire protocols, it can be
mapped differently. For example, it will likely be mapped to some exceptions
in Java, but more likely mapped to some error codes in C.
The error model and the
Status message can be used in a variety of
environments, either with or without APIs, to provide a
consistent developer experience across different environments.
Example uses of this error model include:
Partial errors. If a service needs to return partial errors to the client, it may embed the
Statusin the normal response to indicate the partial errors.
Workflow errors. A typical workflow has multiple steps. Each step may have a
Statusmessage for error reporting.
Batch operations. If a client uses batch request and batch response, the
Statusmessage should be used directly inside batch response, one for each error sub-response.
Asynchronous operations. If an API call embeds asynchronous operation results in its response, the status of those operations should be represented directly using the
Logging. If some API errors are stored in logs, the message
Statuscould be used directly after any stripping needed for security/privacy reasons.