Feat: add chat-gpt step and its example

Signed-off-by: FogDong <dongtianxin.tx@alibaba-inc.com>

charts/vela-workflow/templates/definitions/chat-gpt.yaml

@@ -0,0 +1,132 @@
+# Code generated by KubeVela templates. DO NOT EDIT. Please edit the original cue file.
+# Definition source cue file: vela-templates/definitions/internal/chat-gpt.cue
+apiVersion: core.oam.dev/v1beta1
+kind: WorkflowStepDefinition
+metadata:
+  annotations:
+    custom.definition.oam.dev/category: External Intergration
+    definition.oam.dev/alias: ""
+    definition.oam.dev/description: Send request to chat-gpt
+    definition.oam.dev/example-url: https://raw.githubusercontent.com/kubevela/workflow/main/examples/workflow-run/chat-gpt.yaml
+  name: chat-gpt
+  namespace: {{ include "systemDefinitionNamespace" . }}
+spec:
+  schematic:
+    cue:
+      template: |
+        import (
+        	"vela/op"
+        	"encoding/json"
+        	"encoding/base64"
+        )
+
+        token: op.#Steps & {
+        	if parameter.token.value != _|_ {
+        		value: parameter.token.value
+        	}
+        	if parameter.token.secretRef != _|_ {
+        		read: op.#Read & {
+        			value: {
+        				apiVersion: "v1"
+        				kind:       "Secret"
+        				metadata: {
+        					name:      parameter.token.secretRef.name
+        					namespace: context.namespace
+        				}
+        			}
+        		}
+
+        		stringValue: op.#ConvertString & {bt: base64.Decode(null, read.value.data[parameter.token.secretRef.key])}
+        		value:       stringValue.str
+        	}
+        }
+        http: op.#HTTPDo & {
+        	method: "POST"
+        	url:    "https://api.openai.com/v1/chat/completions"
+        	request: {
+        		timeout: parameter.timeout
+        		body:    json.Marshal({
+        			model: parameter.model
+        			messages: [{
+        				if parameter.prompt.type == "custom" {
+        					content: parameter.prompt.content
+        				}
+        				if parameter.prompt.type == "diagnose" {
+        					content: """
+        You are a professional kubernetes administrator.
+        Carefully read the provided information, being certain to spell out the diagnosis & reasoning, and don't skip any steps.
+        Answer in  \(parameter.prompt.lang).
+        ---
+        \(json.Marshal(parameter.prompt.content))
+        ---
+        What is wrong with this object and how to fix it?
+        """
+        				}
+        				if parameter.prompt.type == "audit" {
+        					content: """
+        You are a professional kubernetes administrator.
+        You inspect the object and find out the security misconfigurations and give advice.
+        Write down the possible problems in bullet points, using the imperative tense.
+        Remember to write only the most important points and do not write more than a few bullet points.
+        Answer in  \(parameter.prompt.lang).
+        ---
+        \(json.Marshal(parameter.prompt.content))
+        ---
+        What is the secure problem with this object and how to fix it?
+        """
+        				}
+        				if parameter.prompt.type == "quality-gate" {
+        					content: """
+        You are a professional kubernetes administrator.
+        You inspect the object and find out the security misconfigurations and rate the object. The max score is 100.
+        Answer with score only.
+        ---
+        \(json.Marshal(parameter.prompt.content))
+        ---
+        What is the score of this object?
+        """
+        				}
+        				role: "user"
+        			}]
+        		})
+        		header: {
+        			"Content-Type": "application/json"
+        			Authorization:  "Bearer \(token.value)"
+        		}
+        	}
+        }
+        response: json.Unmarshal(http.response.body)
+        fail:     op.#Steps & {
+        	if http.response.statusCode >= 400 {
+        		requestFail: op.#Fail & {
+        			message: "\(http.response.statusCode): failed to request: \(response.error.message)"
+        		}
+        	}
+        }
+        result: response.choices[0].message.content
+        log:    op.#Log & {
+        	data: result
+        }
+        parameter: {
+        	token: close({
+        		// +usage=the token value
+        		value: string
+        	}) | close({
+        		secretRef: {
+        			// +usage=name is the name of the secret
+        			name: string
+        			// +usage=key is the token key in the secret
+        			key: string
+        		}
+        	})
+        	// +usage=the model name
+        	model: *"gpt-3.5-turbo" | string
+        	// +usage=the prompt to use
+        	prompt: {
+        		type:    *"custom" | "diagnose" | "audit" | "quality-gate"
+        		lang:    *"English" | "Chinese"
+        		content: string | {...}
+        	}
+        	timeout: *"30s" | string
+        }
+

examples/workflow-run/chat-gpt.yaml

@@ -0,0 +1,49 @@
+apiVersion: core.oam.dev/v1alpha1
+kind: WorkflowRun
+metadata:
+  name: chat-gpt
+  namespace: default
+spec:
+  workflowSpec:
+    steps:
+    # apply a deployment with invalid image, this step will fail because of timeout
+    # the resource will be passed to chat-gpt step to anaylze
+    - name: apply
+      type: apply-deployment
+      timeout: 3s
+      outputs:
+        - name: resource
+          valueFrom: output.value
+      properties:
+        image: invalid
+
+    # if apply step failed, send the resource to chat-gpt to diagnose
+    - name: chat-diagnose
+      if: status.apply.failed
+      type: chat-gpt
+      inputs:
+        - from: resource
+          parameterKey: prompt.content
+      properties:
+        token: 
+          # specify your token
+          value: <your token>
+        prompt:
+          type: diagnose
+
+    # if apply step succeeded, send the resource to chat-gpt to audit
+    - name: chat-audit
+      if: status.apply.succeeded
+      type: chat-gpt
+      inputs:
+        - from: resource
+          parameterKey: prompt.content
+      properties:
+        token: 
+          # or read your token from secret
+          secretRef:
+            name: chat-gpt-token-secret
+            key: token
+        prompt:
+          type: audit
+          lang: Chinese