Create methods: Field behavior

This rule enforces that all Create standard methods have google.api.field_behavior set to REQUIRED on the field representing the resource, as mandated in AIP-133.

Details

This rule looks at any message matching Create*Request and complains if the resource field does not have a google.api.field_behavior annotation with a value of REQUIRED.

Examples

Incorrect code for this rule:

// Incorrect.
message CreateBooksRequest {
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference).type = "library.googleapis.com/Publisher"
  ];
  Book book = 2;  // Should also have (google.api.field_behavior) = REQUIRED.
}

Correct code for this rule:

// Correct.
message CreateBooksRequest {
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference).type = "library.googleapis.com/Publisher"
  ];
  Book book = 2 [(google.api.field_behavior) = REQUIRED];
}

Disabling

If you need to violate this rule, use a leading comment above the field. Remember to also include an aip.dev/not-precedent comment explaining why.

message CreateBooksRequest {
  string parent = 1 [
    (google.api.field_behavior) = REQUIRED,
    (google.api.resource_reference).type = "library.googleapis.com/Publisher"
  ];

  // (-- api-linter: core::0133::request-resource-behavior=disabled
  //     aip.dev/not-precedent: We need to do this because reasons. --)
  Book book = 2;
}

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