Cannot make the graphql:ListenerConfiguration as a configurable variable

[TharmiganK]

Description

When I try to make the graphql:ListenerConfiguration record value as a configurable. The program fails at runtime

Steps to Reproduce

Run the following Ballerina code:

import ballerina/graphql;

# Represents the default GraphQL port. Default value is 9092
public configurable int graphqlPort = 9092;

# Represents the default GraphQL listener configurations
public configurable graphql:ListenerConfiguration graphqlListenerConfigs = {};

# Represents a GraphQL listener that can be used by multiple services
public listener graphql:Listener graphqlListener = new(graphqlPort, graphqlListenerConfigs);

service /graphql on graphqlListener {
    resource function get greeting() returns string {
        return "Hello, World";
    }
}

Runtime error:

error: {ballerina/lang.map}InherentTypeViolation {"message":"cannot update 'readonly' field 'httpVersion' in record of type '(graphql:ListenerConfiguration & readonly)'"}
        at ballerina.graphql.1.Listener:init(listener.bal:41)

This is because we are trying to overwrite the httpVersion in the listener init function - https://github.com/ballerina-platform/module-ballerina-graphql/blob/73ddff7b7627eed9f263ddeb88dc6a3144c80c28/ballerina/listener.bal#L41 which fails for values from configurable variable since the value is readonly.

Version

Ballerina Swan Lake Update 10

Environment Details (with versions)

No response