Hi all, I’m trying to construct an exercise command by hand and send it to the LedgerAPI using Postman. Unfortunately, I’m getting an error, and I was hoping someone could point me to what’s going wrong. The choice I want to exercise is: choice CreateProposals : (ContractId TransactionManifest, …

Also, is there a simple config setting for the sandbox / ledger API, such that it prints all commands it receives into the logs? Then I could simply grab it from there after executing the exercise through Navigator.

The protobuf encoding is a lot more explicit than in the JSON API. You have to explicitly specify types everywhere. Here is an example of a record with two fields where the first is a single contract id and the second is a list of contract ids: choice_argument { record { fields { label:…

[image] Darko: Unfortunately I don’t know where value is expected. Looking at the code ( here and here ) it looks like you might be missing something in a record or variant. It’s weird that this points to subId apparently though. [image] Darko: Also, is there a simple config setting for th…

Thanks a lot for everyone’s input. I’ve made some progress, but I’m again hitting the same error. Can someone please verify if the encoding of the Optional Text type is correct? My understanding was, that it should look like this: "optional": { "value": { "text": "mySomeValue" } } What wa…

That looks right. To encode None, simply omit the value field. All fields of message types are optional in protobuf. "optional": { }

Thank you! Phew, that was a tough one. If someone in the future is looking for a slightly bigger example, here is a successful encoding of the choice CreateProposals as defined as follows: choice CreateProposals : (ContractId TransactionManifest, [ContractId TransferProposal]) with messageI…

Dear Future Self, If you get this error message… MISSING_FIELD(8,subId): The submitted command is missing a mandatory field: value … for something like this… "fields": [ { "label": "operator", "value:": { "party": "operator::12200...1de9f" } }, …check that you’re not doing…

Constructing a gRPC exercise command by Hand

App Development

WallaceKelly January 13, 2023, 4:21pm 3

FYI… I found gRPC UI to be very helpful for assembling gRPC payloads.

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Constructing a gRPC exercise command by Hand

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