Google.Protobuf.WellKnownTypes.Mixin

Declares an API to be included in this API.

Summary

The including API must redeclare all the methods from the included API, but documentation and options are inherited as follows:

• If after comment and whitespace stripping, the documentation string of the redeclared method is empty, it will be inherited from the original method.
• Each annotation belonging to the service config (http, visibility) which is not set in the redeclared method will be inherited.
• If an http annotation is inherited, the path pattern will be modified as follows. Any version prefix will be replaced by the version of the including API plus the root path if specified.

Example of a simple mixin:

package google.acl.v1;
service AccessControl {
  // Get the underlying ACL object.
  rpc GetAcl(GetAclRequest) returns (Acl) {
    option (google.api.http).get = "/v1/{resource=**}:getAcl";
  }
}

package google.storage.v2;
service Storage {
  rpc GetAcl(GetAclRequest) returns (Acl);

  // Get a data record.
  rpc GetData(GetDataRequest) returns (Data) {
    option (google.api.http).get = "/v2/{resource=**}";
  }
}

Example of a mixin configuration:

apis:
- name: google.storage.v2.Storage
  mixins:
  - name: google.acl.v1.AccessControl

The mixin construct implies that all methods in AccessControl are also declared with same name and request/response types in Storage. A documentation generator or annotation processor will see the effective Storage.GetAcl method after inheriting documentation and annotations as follows:

service Storage {
  // Get the underlying ACL object.
  rpc GetAcl(GetAclRequest) returns (Acl) {
    option (google.api.http).get = "/v2/{resource=**}:getAcl";
  }
  ...
}

Note how the version in the path pattern changed from v1 to v2.

If the root field in the mixin is specified, it should be a relative path under which inherited HTTP paths are placed. Example:

apis:
- name: google.storage.v2.Storage
  mixins:
  - name: google.acl.v1.AccessControl
    root: acls

This implies the following inherited HTTP annotation:

service Storage {
  // Get the underlying ACL object.
  rpc GetAcl(GetAclRequest) returns (Acl) {
    option (google.api.http).get = "/v2/acls/{resource=**}:getAcl";
  }
  ...
}

Inheritance

Properties

pbr::MessageDescriptor Descriptor

pbr::MessageDescriptor pb::IMessage. Descriptor

string Name

pb::MessageParser< Mixin > Parser

string Root

const int NameFieldNumber = 1

const int RootFieldNumber = 2

int CalculateSize()

Mixin Clone()

override bool Equals(
  object other
)

bool Equals(
  Mixin other
)

override int GetHashCode()

void MergeFrom(
  Mixin other
)

void MergeFrom(
  pb::CodedInputStream input
)

 Mixin()

 Mixin(
  Mixin other
)

override string ToString()

void WriteTo(
  pb::CodedOutputStream output
)