feat: add qrcode tool for QR code generation (#2699)

api/core/tools/provider/_position.yaml

@@ -18,3 +18,4 @@
 - vectorizer
 - gaode
 - wecom
+- qrcode

api/core/tools/provider/builtin/qrcode/_assets/icon.svg

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Uploaded to: SVG Repo, www.svgrepo.com, Generator: SVG Repo Mixer Tools -->
+<svg width="800px" height="800px" viewBox="0 0 24 24" xmlns="http://www.w3.org/2000/svg">
+    <g>
+        <path fill="none" d="M0 0h24v24H0z"/>
+        <path d="M16 17v-1h-3v-3h3v2h2v2h-1v2h-2v2h-2v-3h2v-1h1zm5 4h-4v-2h2v-2h2v4zM3 3h8v8H3V3zm2 2v4h4V5H5zm8-2h8v8h-8V3zm2 2v4h4V5h-4zM3 13h8v8H3v-8zm2 2v4h4v-4H5zm13-2h3v2h-3v-2zM6 6h2v2H6V6zm0 10h2v2H6v-2zM16 6h2v2h-2V6z"/>
+    </g>
+</svg>
\ No newline at end of file

api/core/tools/provider/builtin/qrcode/qrcode.py

+from typing import Any
+
+from core.tools.errors import ToolProviderCredentialValidationError
+from core.tools.provider.builtin.qrcode.tools.qrcode_generator import QRCodeGeneratorTool
+from core.tools.provider.builtin_tool_provider import BuiltinToolProviderController
+
+
+class QRCodeProvider(BuiltinToolProviderController):
+    def _validate_credentials(self, credentials: dict[str, Any]) -> None:
+        try:
+            QRCodeGeneratorTool().invoke(user_id='',
+                                         tool_parameters={
+                                            'content': 'Dify 123 😊'
+                                        })
+        except Exception as e:
+            raise ToolProviderCredentialValidationError(str(e))

api/core/tools/provider/builtin/qrcode/qrcode.yaml

+identity:
+  author: Bowen Liang
+  name: qrcode
+  label:
+    en_US: QRCode
+    zh_Hans: 二维码工具
+    pt_BR: QRCode
+  description:
+    en_US: A tool for generating QR code (quick-response code) image.
+    zh_Hans: 一个二维码工具
+    pt_BR: A tool for generating QR code (quick-response code) image.
+  icon: icon.svg

api/core/tools/provider/builtin/qrcode/tools/qrcode_generator.py

+import io
+import logging
+from typing import Any, Union
+
+import qrcode
+from qrcode.image.pure import PyPNGImage
+
+from core.tools.entities.tool_entities import ToolInvokeMessage
+from core.tools.tool.builtin_tool import BuiltinTool
+
+
+class QRCodeGeneratorTool(BuiltinTool):
+    def _invoke(self,
+                user_id: str,
+                tool_parameters: dict[str, Any],
+                ) -> Union[ToolInvokeMessage, list[ToolInvokeMessage]]:
+        """
+            invoke tools
+        """
+        # get expression
+        content = tool_parameters.get('content', '')
+        if not content:
+            return self.create_text_message('Invalid parameter content')
+
+        try:
+            img = qrcode.make(data=content, image_factory=PyPNGImage)
+            byte_stream = io.BytesIO()
+            img.save(byte_stream)
+            byte_array = byte_stream.getvalue()
+            return self.create_blob_message(blob=byte_array,
+                                            meta={'mime_type': 'image/png'},
+                                            save_as=self.VARIABLE_KEY.IMAGE.value)
+        except Exception:
+            logging.exception(f'Failed to generate QR code for content: {content}')
+            return self.create_text_message('Failed to generate QR code')

api/core/tools/provider/builtin/qrcode/tools/qrcode_generator.yaml

+identity:
+  name: qrcode_generator
+  author: Bowen Liang
+  label:
+    en_US: QR Code Generator
+    zh_Hans: 二维码生成器
+    pt_BR: QR Code Generator
+description:
+  human:
+    en_US: A tool for generating QR code image
+    zh_Hans: 一个用于生成二维码的工具
+    pt_BR: A tool for generating QR code image
+  llm: A tool for generating QR code image
+parameters:
+  - name: content
+    type: string
+    required: true
+    label:
+      en_US: content text for QR code
+      zh_Hans: 二维码文本内容
+      pt_BR: content text for QR code
+    human_description:
+      en_US: content text for QR code
+      zh_Hans: 二维码文本内容
+      pt_BR: 二维码文本内容
+    form: llm

api/requirements.txt

@@ -70,3 +70,4 @@ numexpr~=2.9.0
 duckduckgo-search==4.4.3
 arxiv==2.1.0
 yarl~=1.9.4
+qrcode~=7.4.2