'Cannot find type for url' error for items of google.protobuf.Any type

[pmirek]

Description

How Any type is handled, as I have issues to get it working.
I have offer_item, that is defined as

message OfferItem {
  google.protobuf.Any offer_item = 1;
}

But got errors related to finding class referenced from that item.

Message being sent:

grpcurl -plaintext -import-path ./protos -proto stub/offer/proto/OfferSvc.proto -d '
{
  "offer_id": "newoffer001",
  "ttl": { "seconds": 900 },
  "offer_to_add": {
    "offer_items": [
      {
        "offer_item": {
          "value": "newoffer001",
          "@type": "type.googleapis.com/google.protobuf.StringValue"
        }
      }
    ]
  }
}' localhost:50000 stub.offer.proto.OfferSvc/addOffer

From logs I got:

Message:
offer_id: "newoffer001"
ttl {
  seconds: 900
}
offer_to_add {
  offer_items {
    offer_item {
      type_url: "type.googleapis.com/google.protobuf.StringValue"
      value: "\n\032newoffer001"
    }
  }
}

And exception stack:

Caused by: com.google.protobuf.InvalidProtocolBufferException: Cannot find type for url: type.googleapis.com/google.protobuf.StringValue
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printAny(JsonFormat.java:886) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.access$1000(JsonFormat.java:714) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl$1.print(JsonFormat.java:787) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:766) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1263) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1128) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printField(JsonFormat.java:1052) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:1030) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:769) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1263) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1128) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printRepeatedFieldValue(JsonFormat.java:1066) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printField(JsonFormat.java:1050) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:1030) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:769) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1263) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printSingleFieldValue(JsonFormat.java:1128) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.printField(JsonFormat.java:1052) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:1030) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$PrinterImpl.print(JsonFormat.java:769) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$Printer.appendTo(JsonFormat.java:372) ~[protobuf-java-util-3.19.2.jar:na]
        at com.google.protobuf.util.JsonFormat$Printer.print(JsonFormat.java:382) ~[protobuf-java-util-3.19.2.jar:na]

Though, when on container, it looks like StringValue is there:

/usr/src/java-code/build/classes# find . | grep String
./java/main/com/google/protobuf/StringValueOrBuilder.class
./java/main/com/google/protobuf/StringValue$1.class
./java/main/com/google/protobuf/StringValue$Builder.class
./java/main/com/google/protobuf/StringValue.class

Is this code issue, or I need to make corrections in test set or mock configuration to make it working?

[pmirek]

Looks like similar issue was here: protocolbuffers/protobuf#6584
and testing from google including Any type for json printing: https://github.com/protocolbuffers/protobuf/blob/main/java/util/src/test/java/com/google/protobuf/util/JsonFormatTest.java