[Feature][3.3] Enhance JsonCompatibilityUtil to support triple protocol

[AlbumenJ]

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Apache Dubbo Component

Java SDK (apache/dubbo)

Descriptions

Enhance JsonCompatibilityUtil to support triple protocol none-annotation mode (application/json)

• Check all the type that Dubbo can support
• Generate the demo json struct
• Log warn to notify users that this object might to compatiable with triple none-annotation mode

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[hengyoush]

I can try solve it, please assign to me

[CrazyHZM]

@hengyoush Go ahead

[hengyoush]

Before I start, I have some questions about this issue:

• Check all the types that Dubbo can support: I guess the current JsonCompatibilityUtil already has the functionality to check the compatibility of classes. Is it the same usage as JsonCompatibilityUtil in RestProtocol, and should we also use JsonCompatibilityUtil to do the same thing in TripleProtocol?

// this is the JsonCompatibilityUtil in RestProtocol
private void checkJsonCompatibility(Class<?> clazz, String jsonCheckLevel) throws RpcException {

        if (jsonCheckLevel == null || JSON_CHECK_LEVEL_WARN.equals(jsonCheckLevel)) {
        //....
        List<String> unsupportedMethods = JsonCompatibilityUtil.getUnsupportedMethods(clazz);
        } else if (JSON_CHECK_LEVEL_STRICT.equals(jsonCheckLevel)) {
        // ...
        }
    }

• Generate the demo json struct: Does JsonCompatibilityUtil need to generate corresponding sample JSON structures based on interface parameters during the validation process?

[AlbumenJ]

Before I start, I have some questions about this issue:

• Check all the types that Dubbo can support: I guess the current JsonCompatibilityUtil already has the functionality to check the compatibility of classes. Is it the same usage as JsonCompatibilityUtil in RestProtocol, and should we also use JsonCompatibilityUtil to do the same thing in TripleProtocol?

// this is the JsonCompatibilityUtil in RestProtocol
private void checkJsonCompatibility(Class<?> clazz, String jsonCheckLevel) throws RpcException {

        if (jsonCheckLevel == null || JSON_CHECK_LEVEL_WARN.equals(jsonCheckLevel)) {
        //....
        List<String> unsupportedMethods = JsonCompatibilityUtil.getUnsupportedMethods(clazz);
        } else if (JSON_CHECK_LEVEL_STRICT.equals(jsonCheckLevel)) {
        // ...
        }
    }

• Generate the demo json struct: Does JsonCompatibilityUtil need to generate corresponding sample JSON structures based on interface parameters during the validation process?

• In TripleProtocol
• No. This is a explict feature. @oxsean Do you have any ideas?

[hengyoush]

Before I start, I have some questions about this issue:

• Check all the types that Dubbo can support: I guess the current JsonCompatibilityUtil already has the functionality to check the compatibility of classes. Is it the same usage as JsonCompatibilityUtil in RestProtocol, and should we also use JsonCompatibilityUtil to do the same thing in TripleProtocol?

// this is the JsonCompatibilityUtil in RestProtocol
private void checkJsonCompatibility(Class<?> clazz, String jsonCheckLevel) throws RpcException {

        if (jsonCheckLevel == null || JSON_CHECK_LEVEL_WARN.equals(jsonCheckLevel)) {
        //....
        List<String> unsupportedMethods = JsonCompatibilityUtil.getUnsupportedMethods(clazz);
        } else if (JSON_CHECK_LEVEL_STRICT.equals(jsonCheckLevel)) {
        // ...
        }
    }

• Generate the demo json struct: Does JsonCompatibilityUtil need to generate corresponding sample JSON structures based on interface parameters during the validation process?

• In TripleProtocol
• No. This is a explict feature. @oxsean Do you have any ideas?

I have completed the 1. and 3, but I am still confused about the second(Generate the demo json struct).
Assuming we have a class like:

 public class DemoClass {
      private String str;
      private Set<String> set;
  }

and get a String through String demoStruct = JsonCompatibilityUtil.generateDemoJsonStruct(Class clazz):

{
	"str": "foobar",
	"set": ["v1", "v2"]
}

Is my understanding correct?

[oxsean]

@AlbumenJ Sorry for later to noticed this
Should the focus be on leveraging JsonCompatibilityUtil in TripleProtocol to check compatibility? This should already be available. Generating the demo json structure may not be needed currently, but it could be useful for future support of OpenAPI.