[Feature/NifiCluster] Add ability to set container port network protocol

[mh013370]

Q	A
Bug fix?	no
New feature?	yes
API breaks?	no
Deprecations?	no
Related tickets	fixes #319
License	Apache 2.0

What's in this PR?

Adds the ability to set the NiFi container port network protocol. This field is new and optional, defaulting to TCP. If one wished to set the protocol for all container ports, you would use the following:

  listenersConfig:
    internalListeners:
      - type: "https"
        name: "https"
        containerPort: 8443
        protocol: "TCP"
      - type: "cluster"
        name: "cluster"
        containerPort: 6007
        protocol: "TCP"
      - type: "s2s"
        name: "s2s"
        containerPort: 10000
        protocol: "TCP"
      - type: "prometheus"
        name: "prometheus"
        containerPort: 9090
        protocol: "TCP"
      - type: "load-balance"
        name: "load-balance"
        containerPort: 6342
        protocol: "TCP"
      - name: "my-custom-listener-port"
        containerPort: 1234
        protocol: "UDP"
    sslSecrets:
      tlsSecretName: "test-nifikop"
      create: true

Why?

It's not currently possible to set anything other than TCP.

Checklist

• Implementation tested
• Error handling code meets the guideline
• Logging code meets the guideline
• User guide and development docs updated (if needed)
• Append changelog with changes

[mh013370]

@juldrixx : FYI This requires pushing a new build image, merging #321, and then rebasing this PR on master.

Still some issue

[juldrixx]

That still doesn't work. If you change the default value to UDP is still defaulting on TCP.

[mh013370]

That still doesn't work. If you change the default value to UDP is still defaulting on TCP.

well isn't this a fun problem 😄

[juldrixx]

That still doesn't work. If you change the default value to UDP is still defaulting on TCP.

well isn't this a fun problem 😄

Even more when we have

// +kubebuilder:validation:Enum={"DO_NOT_LOAD_BALANCE","PARTITION_BY_ATTRIBUTE","ROUND_ROBIN","SINGLE"}
type ConnectionLoadBalanceStrategy string

// how to load balance the data in this Connection across the nodes in the cluster.
// +kubebuilder:default="DO_NOT_LOAD_BALANCE"
LoadBalanceStrategy ConnectionLoadBalanceStrategy `json:"loadBalanceStrategy,omitempty"

that gives us

loadBalanceStrategy:
 default: DO_NOT_LOAD_BALANCE
 enum:
 - DO_NOT_LOAD_BALANCE
 - PARTITION_BY_ATTRIBUTE
 - ROUND_ROBIN
 - SINGLE
 type: string

And I can change the default value

[juldrixx]

If you change the type from corev1.Protocol to string it works 😕

[juldrixx]

I guess, you can rollback to how it was before without default annotation. It's fine.

[mh013370]

If you change the type from corev1.Protocol to string it works 😕

Hmm. I was hoping to use the k8s types for ease of use and to avoid converting to/from string and corev1.Protocol, but i think due to the // +enum annotation on corev1.Protocol we might not be able to.

I can either change it to a string or remove the default. Which would you prefer?

[juldrixx]

If you change the type from corev1.Protocol to string it works 😕

Hmm. I was hoping to use the k8s types for ease of use and to avoid converting to/from string and corev1.Protocol, but i think due to the // +enum annotation on corev1.Protocol we might not be able to.

I can either change it to a string or remove the default. Which would you prefer?

Remove the default, I asked on Kubebuilder slack how to do it. I'm still waiting for an answer, but depending on the response, I'll make the appropriate change in the future.

[mh013370]

If you change the type from corev1.Protocol to string it works 😕

Hmm. I was hoping to use the k8s types for ease of use and to avoid converting to/from string and corev1.Protocol, but i think due to the // +enum annotation on corev1.Protocol we might not be able to.
I can either change it to a string or remove the default. Which would you prefer?

Remove the default, I asked on Kubebuilder slack how to do it. I'm still waiting for an answer, but depending on the response, I'll make the appropriate change in the future.

pushed