Invoke IBM Cloud functions from API Connect

ibm-cloud-function.yaml

swagger: '2.0'
info:
  version: 1.0.0
  title: IBM Cloud Functions
  x-ibm-name: ibm-cloud-functions
basePath: /ibm-cloud-functions
x-ibm-configuration:
  properties:
    function-url:
      value: YOUR-FUNCTION-URL
      description: URL of the IBM Cloud function endpoint
    iam-apikey:
      value: YOUR-API-KEY
      description: IBM Cloud IAM API KEY
  cors:
    enabled: true
  gateway: datapower-api-gateway
  type: rest
  phase: realized
  enforced: true
  testable: true
  assembly:
    execute:
      - set-variable:
          version: 2.0.0
          title: setup iam request
          actions:
            - set: message.headers.content-type
              value: application/x-www-form-urlencoded
              type: string
            - set: message.headers.accept
              value: application/json
              type: string
            - set: message.body
              type: string
              value: >-
                grant_type=urn:ibm:params:oauth:grant-type:apikey&apikey=$(iam-apikey)
      - invoke:
          version: 2.2.0
          title: 'invoke: iam'
          backend-type: json
          header-control:
            type: blocklist
            values: []
          parameter-control:
            type: allowlist
            values: []
          http-version: HTTP/1.1
          timeout: 60
          verb: POST
          chunked-uploads: false
          persistent-connection: false
          cache-response: time-to-live
          cache-ttl: 900
          stop-on-error: []
          websocket-upgrade: false
          target-url: https://iam.cloud.ibm.com/identity/token
          output: iam
          cache-key: iam-api-key
      - parse:
          version: 2.1.0
          title: parse response
          parse-settings-reference:
            default: apic-default-parsesettings
          use-content-type: true
          input: iam
          output: iam
      - set-variable:
          version: 2.0.0
          title: setup function call
          actions:
            - set: message.headers.authorization
              value: Bearer $(iam.body.access_token)
              type: string
            - set: message.body
              value: $(request.body)
              type: any
            - set: message.headers.accept
              value: application/json
              type: string
      - invoke:
          version: 2.2.0
          title: invoke functions
          backend-type: detect
          header-control:
            type: allowlist
            values:
              - Accept
              - Authorization
          parameter-control:
            type: allowlist
            values: []
          http-version: HTTP/1.1
          timeout: 60
          verb: POST
          chunked-uploads: true
          persistent-connection: true
          cache-response: protocol
          cache-ttl: 900
          stop-on-error: []
          graphql-send-type: detect
          websocket-upgrade: false
          target-url: $(function-url)
      - map:
          version: 2.0.0
          title: map
          inputs:
            input:
              schema:
                description: ''
                type: object
                properties:
                  activationId:
                    type: string
                    name: activationId
                  annotations:
                    type: array
                    items:
                      properties:
                        key:
                          type: string
                          name: key
                        value:
                          type: string
                          name: value
                      type: object
                    name: annotations
                  duration:
                    type: number
                    name: duration
                  end:
                    type: number
                    name: end
                  logs:
                    type: array
                    items:
                      required: []
                      properties: {}
                      type: object
                    name: logs
                  name:
                    type: string
                    name: name
                  namespace:
                    type: string
                    name: namespace
                  publish:
                    type: boolean
                    name: publish
                  response:
                    type: object
                    properties:
                      result:
                        type: object
                        properties:
                          message:
                            type: string
                            name: message
                        name: result
                      size:
                        type: number
                        name: size
                      status:
                        type: string
                        name: status
                      success:
                        type: boolean
                        name: success
                    name: response
                  start:
                    type: number
                    name: start
                  subject:
                    type: string
                    name: subject
                  version:
                    type: string
                    name: version
                example: >-
                  {"activationId":"ff02e385f2e44a2782e385f2e4fa2733","annotations":[{"key":"path","value":"dc6f8fa6-3ff5-4db6-8fb3-a6fc538c672b/example-function"},{"key":"waitTime","value":170},{"key":"transId","value":"a52036cf250abfe4dc55805a0f7b0d6e"},{"key":"kind","value":"nodejs:16"},{"key":"timeout","value":false},{"key":"limits","value":{"concurrency":1,"logs":10,"memory":256,"timeout":60000}}],"duration":3,"end":1664873207438,"logs":[],"name":"example-function","namespace":"dc6f8fa6-3ff5-4db6-8fb3-a6fc538c672b","publish":false,"response":{"result":{"message":"Hello
                  World"},"size":25,"status":"success","success":true},"start":1664873207435,"subject":"moorh@uk.ibm.com","version":"0.0.1"}
              variable: message.body
          outputs:
            output:
              schema:
                type: object
              variable: message.body
          actions:
            - set: output
              from: input.response.result
    finally: []
  activity-log:
    enabled: true
    success-content: activity
    error-content: payload
paths:
  /:
    get:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
    put:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
    post:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
    delete:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
    head:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
    patch:
      responses:
        '200':
          description: success
          schema:
            type: string
      consumes: []
      produces: []
securityDefinitions:
  clientID:
    type: apiKey
    in: header
    name: X-IBM-Client-Id
security:
  - clientID: []
schemes:
  - https