Resource type name

This rule enforces that messages that have a google.api.resource annotation, have a properly formatted plural, as described in AIP-123.

Details

This rule scans messages with a google.api.resource annotation, and verifies the plural field exists.

Examples

Incorrect code for this rule:

// Incorrect.
message Book {
  // no plural annotation
  option (google.api.resource) = {
    type: "library.googleapis.com/BookShelf"
    pattern: "publishers/{publisher}/bookShelves/{book_shelf}"
  };

  string name = 1;
}

Correct code for this rule:

// Correct.
message Book {
  option (google.api.resource) = {
    type: "library.googleapis.com/BookShelf"
    pattern: "publishers/{publisher}/bookShelves/{book_shelf}"
    plural: "bookShelves",
  };

  string name = 1;
}

Disabling

If you need to violate this rule, use a leading comment above the message.

// (-- api-linter: core::0123::resource-plural=disabled
//     aip.dev/not-precedent: We need to do this because reasons. --)
message Book {
  option (google.api.resource) = {
    type: "library.googleapis.com/Genre/Mystery/Book"
    pattern: "publishers/{publisher}/books/{book}"
  };

  string name = 1;
}

If you need to violate this rule for an entire file, place the comment at the top of the file.