Unable to resolve @restJson1 trait

[jabalsad]

We define our service with the @restJson1 trait:

namespace my.service
use aws.protocols#restJson1
@restJson1
service MyService {
   ...
}

However, when running the gradle build step, we see a message:

Unable to find a protocol generator for my.service#MyService: The my.service#MyService service supports the following unsupported protocols [aws.protocols#restJson1]. The following protocol generators were found on the class path: []

Similarly, in Visual Studio using the Smithy plugin, we get an error:

Unable to resolve trait `aws.protocols#restJson1`. If this is a custom trait, then it must be defined before it can be used in a model.Smithy LSP

Any idea how to fix this? See our build.gradle.kts file below:

plugins {
    java
    id("software.amazon.smithy").version("0.6.0")
}

repositories {
    mavenLocal()
    mavenCentral()
}

buildscript {
    dependencies {
        classpath("software.amazon.smithy:smithy-openapi:1.17.0")
        classpath("software.amazon.smithy.go:smithy-go-codegen:0.1.0")
        // classpath("software.amazon.smithy:smithy-aws-apigateway-openapi:1.11.0")
        // The openapi plugin configured in the smithy-build.json example below
        // uses the restJson1 protocol defined in the aws-traits package. This
        // additional dependency must added to use that protocol.
        classpath("software.amazon.smithy:smithy-aws-traits:1.17.0")
        classpath("software.amazon.smithy:smithy-cli:1.17.0")
    }
}

dependencies {
    implementation("software.amazon.smithy:smithy-model:1.17.0")
    implementation("software.amazon.smithy:smithy-aws-traits:1.17.0")
    implementation("software.amazon.smithy.go:smithy-go-codegen:0.1.0")
    implementation("software.amazon.smithy.typescript:smithy-aws-typescript-codegen:0.8.0")
}

configure<software.amazon.smithy.gradle.SmithyExtension> {
    // Uncomment this to use a custom projection when building the JAR.
    // projection = "foo"
}

// Uncomment to disable creating a JAR.
tasks["jar"].enabled = false

[mtdowling]

This is for Go? The actual code generation for the restJson1 protocol, because it's an AWS protocol, comes from software.amazon.smithy:smithy-aws-go-codegen... which isn't published to Maven Central. Can you open this ticket on the smithy-go repo so they can either a) move the restJson1 codegen to smithy-go directly, or b) publish smithy-aws-go-codegen to Maven Central?

[jabalsad]

Just to confirm, we're currently publishing smithy-go-codegen to our own local Maven repository by checking out https://github.com/aws/smithy-go and running make smithy-publish-local, so the code generator works (for the most part). Is this what you are proposing or am I misunderstanding?

[mtdowling]

No, I'm saying the implementation for restJson1 is in the AWS SDK repo and it's not on Maven central. Thanks for opening that ticket. That's where we should track this.