Propose: add the KubeVela project as a integration

[barnettZQG]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

The KubeVela community focuses on the practice of application specification, and we agree with the Gateway API in terms of the application gateway rules, so we integrate the specification.

Does this PR introduce a user-facing change?:

NONE

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: barnettZQG / name: barnettZQG (9d23716)

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[robscott]

Hey @barnettZQG, thanks for the PR! Trying to understand how this integration works, could it be used with any Gateway API implementation or is it really just tied to Traefik? So far the integrations we have listed can be used with any implementation of the API.

[barnettZQG]

@robscott thanks for your reply, we provide the user's APIs (the trait in OAM, including http-route, https-route, tcp-route, udp-route) based on Gateway API. The traefik is only a provider, we will integrate other providers that support the Gateway API. For users, they only change the provider name, and no need to change other configurations, when they move the application to other environments.

[robscott]

Hey @barnettZQG, I brought this up in today's community meeting, some notes:

1. We haven't clearly defined what qualifies something to be listed as an integration yet
2. We want to limit it to integrations that support multiple implementations of the API

I'm going to work on a PR to resolve the first item. It sounds like you're going to add support for additional Gateway API implementations soon, maybe we can just leave this PR open until KubeVela is able to support more than Traefik?

[barnettZQG]

@robscott OK, we will do it.

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[barnettZQG]

@robscott Hi, I am sorry to update it after a long time. Currently, we make an addon based on the Gateway API and provide two implementation addons. Traefik and Istio Gateway. Based on the same user-side experience, we could integrate more implementations.

[k8s-ci-robot]

@barnettZQG: PR needs rebase.

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[gyohuangxin]

A small typo.

Suggested change

	KubeVela using the Gateway API provides the standard management ability regarding the application access rules. It currently publishes a [gateway-traits][addon] to provide the user API. There are two implementation addon, [Traefik][traefik] and [Istio gateway][istio]. You can refer to the [installation document][document] to install the KubeVela and enable the gateway-traits addon.
	KubeVela using the Gateway API provides the standard management ability regarding the application access rules. It currently publishes a [gateway-traits][addon] to provide the user API. There are two implementation addons, [Traefik][traefik] and [Istio gateway][istio]. You can refer to the [installation document][document] to install the KubeVela and enable the gateway-traits addon.

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[Xunzhuo]

/lgtm

Need to resolve some conflicts and a rebase.

[k8s-ci-robot]

@barnettZQG: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-gateway-api-verify	071f9a5	link	true	/test pull-gateway-api-verify
pull-gateway-api-test	071f9a5	link	true	/test pull-gateway-api-test

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[Xunzhuo]

/hold after kubevela/catalog#598 gets finished.

[shaneutt]

/hold after kubevela/catalog#598 gets finished.

I see we're waiting on kubevela/catalog#598 before this PR can move forward. Looking at that issue it appears there is a significant amount of work that needs to be completed. Any thoughts on maybe closing this PR for the moment, so it doesn't have to linger, and then opening a PR when this is ready?

[barnettZQG]

@shaneutt OK. I will open a new PR after kubevela/catalog#598 is complete.