Pub/sub schema validation fails for Import "google/protobuf/any.proto" has not been loaded

[nitish bhardwaj]

I am new to GCP. I am trying to use Pub/Sub service with schema definition using protobuf.

Schema:

syntax = "proto3";

import "google/protobuf/any.proto";

message Endorsement {

  string endorserId=1;

  google.protobuf.Any data = 2;

  string signature=3;

  bool isVerified=4;

}

message TransactionPayload {

  string policyId =1;

  string txnId =2;

  repeated Endorsement endorsements=3;

}

Validation of this schema fails with an error

Invalid Protocol Buffer schema. Import "google/protobuf/any.proto" has not been loaded.

I need to use google.protobuf.Any, is there any other way to use/define this?

[Ismail (Cloud Platform Support)]

Currently, imports are not supported with Pub/Sub's schema support. You'd have to define the message type yourself in the definition for your message type. Note also that the current schema support only allows a single message top-message type to be defined, so you'd also have to embed the `Endorsement` definition inside the `TransactionPayload` definition. 

As clarified on this Stack thread.