feat: knowledge pipeline (#25360)

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api/tests/fixtures/workflow/simple_passthrough_workflow.yml

@@ -0,0 +1,124 @@
+app:
+  description: 'This workflow receive a "query" and output the same content.'
+  icon: 🤖
+  icon_background: '#FFEAD5'
+  mode: workflow
+  name: echo
+  use_icon_as_answer_icon: false
+dependencies: []
+kind: app
+version: 0.3.1
+workflow:
+  conversation_variables: []
+  environment_variables: []
+  features:
+    file_upload:
+      allowed_file_extensions:
+      - .JPG
+      - .JPEG
+      - .PNG
+      - .GIF
+      - .WEBP
+      - .SVG
+      allowed_file_types:
+      - image
+      allowed_file_upload_methods:
+      - local_file
+      - remote_url
+      enabled: false
+      fileUploadConfig:
+        audio_file_size_limit: 50
+        batch_count_limit: 5
+        file_size_limit: 15
+        image_file_size_limit: 10
+        video_file_size_limit: 100
+        workflow_file_upload_limit: 10
+      image:
+        enabled: false
+        number_limits: 3
+        transfer_methods:
+        - local_file
+        - remote_url
+      number_limits: 3
+    opening_statement: ''
+    retriever_resource:
+      enabled: true
+    sensitive_word_avoidance:
+      enabled: false
+    speech_to_text:
+      enabled: false
+    suggested_questions: []
+    suggested_questions_after_answer:
+      enabled: false
+    text_to_speech:
+      enabled: false
+      language: ''
+      voice: ''
+  graph:
+    edges:
+    - data:
+        isInIteration: false
+        isInLoop: false
+        sourceType: start
+        targetType: end
+      id: 1754154032319-source-1754154034161-target
+      source: '1754154032319'
+      sourceHandle: source
+      target: '1754154034161'
+      targetHandle: target
+      type: custom
+      zIndex: 0
+    nodes:
+    - data:
+        desc: ''
+        selected: false
+        title: Start
+        type: start
+        variables:
+        - label: query
+          max_length: null
+          options: []
+          required: true
+          type: text-input
+          variable: query
+      height: 90
+      id: '1754154032319'
+      position:
+        x: 30
+        y: 227
+      positionAbsolute:
+        x: 30
+        y: 227
+      selected: false
+      sourcePosition: right
+      targetPosition: left
+      type: custom
+      width: 244
+    - data:
+        desc: ''
+        outputs:
+        - value_selector:
+          - '1754154032319'
+          - query
+          value_type: string
+          variable: query
+        selected: true
+        title: End
+        type: end
+      height: 90
+      id: '1754154034161'
+      position:
+        x: 334
+        y: 227
+      positionAbsolute:
+        x: 334
+        y: 227
+      selected: true
+      sourcePosition: right
+      targetPosition: left
+      type: custom
+      width: 244
+    viewport:
+      x: 0
+      y: 0
+      zoom: 0.7