template_workflow.zh.mdx 18 KB

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  1. import { CodeGroup } from '../code.tsx'
  2. import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from '../md.tsx'
  3. # Workflow 应用 API
  4. Workflow 应用无会话支持,适合用于翻译/文章写作/总结 AI 等等。
  5. <div>
  6. ### Base URL
  7. <CodeGroup title="Code" targetCode={props.appDetail.api_base_url}>
  8. ```javascript
  9. ```
  10. </CodeGroup>
  11. ### Authentication
  12. Dify Service API 使用 `API-Key` 进行鉴权。
  13. <i>**强烈建议开发者把 `API-Key` 放在后端存储,而非分享或者放在客户端存储,以免 `API-Key` 泄露,导致财产损失。**</i>
  14. 所有 API 请求都应在 **`Authorization`** HTTP Header 中包含您的 `API-Key`,如下所示:
  15. <CodeGroup title="Code">
  16. ```javascript
  17. Authorization: Bearer {API_KEY}
  18. ```
  19. </CodeGroup>
  20. </div>
  21. ---
  22. <Heading
  23. url='/workflows/run'
  24. method='POST'
  25. title='执行 workflow'
  26. name='#Execute-Workflow'
  27. />
  28. <Row>
  29. <Col>
  30. 执行 workflow,没有已发布的 workflow,不可执行。
  31. ### Request Body
  32. - `inputs` (object) Required
  33. 允许传入 App 定义的各变量值。
  34. inputs 参数包含了多组键值对(Key/Value pairs),每组的键对应一个特定变量,每组的值则是该变量的具体值。
  35. - `response_mode` (string) Required
  36. 返回响应模式,支持:
  37. - `streaming` 流式模式(推荐)。基于 SSE(**[Server-Sent Events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events)**)实现类似打字机输出方式的流式返回。
  38. - `blocking` 阻塞模式,等待执行完毕后返回结果。(请求若流程较长可能会被中断)。
  39. <i>由于 Cloudflare 限制,请求会在 100 秒超时无返回后中断。</i>
  40. - `user` (string) Required
  41. 用户标识,用于定义终端用户的身份,方便检索、统计。
  42. 由开发者定义规则,需保证用户标识在应用内唯一。
  43. - `files` (array[object]) Optional
  44. 文件列表,适用于传入文件(图片)结合文本理解并回答问题,仅当模型支持 Vision 能力时可用。
  45. - `type` (string) 支持类型:图片 `image`(目前仅支持图片格式)。
  46. - `transfer_method` (string) 传递方式,`remote_url` 图片地址 / `local_file` 上传文件
  47. - `url` (string) 图片地址(仅当传递方式为 `remote_url` 时)
  48. - `upload_file_id` (string) (string) 上传文件 ID(仅当传递方式为 `local_file` 时)
  49. ### Response
  50. 当 `response_mode` 为 `blocking` 时,返回 CompletionResponse object。
  51. 当 `response_mode` 为 `streaming`时,返回 ChunkCompletionResponse object 流式序列。
  52. ### CompletionResponse
  53. 返回完整的 App 结果,`Content-Type` 为 `application/json` 。
  54. - `workflow_run_id` (string) workflow 执行 ID
  55. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  56. - `data` (object) 详细内容
  57. - `id` (string) workflow 执行 ID
  58. - `workflow_id` (string) 关联 Workflow ID
  59. - `status` (string) 执行状态, `running` / `succeeded` / `failed` / `stopped`
  60. - `outputs` (json) Optional 输出内容
  61. - `error` (string) Optional 错误原因
  62. - `elapsed_time` (float) Optional 耗时(s)
  63. - `total_tokens` (int) Optional 总使用 tokens
  64. - `total_steps` (int) 总步数(冗余),默认 0
  65. - `created_at` (timestamp) 开始时间
  66. - `finished_at` (timestamp) 结束时间
  67. ### ChunkCompletionResponse
  68. 返回 App 输出的流式块,`Content-Type` 为 `text/event-stream`。
  69. 每个流式块均为 data: 开头,块之间以 `\n\n` 即两个换行符分隔,如下所示:
  70. <CodeGroup>
  71. ```streaming {{ title: 'Response' }}
  72. data: {"event": "message", "task_id": "900bbd43-dc0b-4383-a372-aa6e6c414227", "id": "663c5084-a254-4040-8ad3-51f2a3c1a77c", "answer": "Hi", "created_at": 1705398420}\n\n
  73. ```
  74. </CodeGroup>
  75. 流式块中根据 `event` 不同,结构也不同,包含以下类型:
  76. - `event: workflow_started` workflow 开始执行
  77. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  78. - `workflow_run_id` (string) workflow 执行 ID
  79. - `event` (string) 固定为 `workflow_started`
  80. - `data` (object) 详细内容
  81. - `id` (string) workflow 执行 ID
  82. - `workflow_id` (string) 关联 Workflow ID
  83. - `sequence_number` (int) 自增序号,App 内自增,从 1 开始
  84. - `created_at` (timestamp) 开始时间
  85. - `event: node_started` node 开始执行
  86. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  87. - `workflow_run_id` (string) workflow 执行 ID
  88. - `event` (string) 固定为 `node_started`
  89. - `data` (object) 详细内容
  90. - `id` (string) workflow 执行 ID
  91. - `node_id` (string) 节点 ID
  92. - `node_type` (string) 节点类型
  93. - `title` (string) 节点名称
  94. - `index` (int) 执行序号,用于展示 Tracing Node 顺序
  95. - `predecessor_node_id` (string) 前置节点 ID,用于画布展示执行路径
  96. - `inputs` (array[object]) 节点中所有使用到的前置节点变量内容
  97. - `created_at` (timestamp) 开始时间
  98. - `event: node_finished` node 执行结束,成功失败同一事件中不同状态
  99. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  100. - `workflow_run_id` (string) workflow 执行 ID
  101. - `event` (string) 固定为 `node_finished`
  102. - `data` (object) 详细内容
  103. - `id` (string) node 执行 ID
  104. - `node_id` (string) 节点 ID
  105. - `index` (int) 执行序号,用于展示 Tracing Node 顺序
  106. - `predecessor_node_id` (string) optional 前置节点 ID,用于画布展示执行路径
  107. - `inputs` (array[object]) 节点中所有使用到的前置节点变量内容
  108. - `process_data` (json) Optional 节点过程数据
  109. - `outputs` (json) Optional 输出内容
  110. - `status` (string) 执行状态 `running` / `succeeded` / `failed` / `stopped`
  111. - `error` (string) Optional 错误原因
  112. - `elapsed_time` (float) Optional 耗时(s)
  113. - `execution_metadata` (json) 元数据
  114. - `total_tokens` (int) optional 总使用 tokens
  115. - `total_price` (decimal) optional 总费用
  116. - `currency` (string) optional 货币,如 `USD` / `RMB`
  117. - `created_at` (timestamp) 开始时间
  118. - `event: workflow_finished` workflow 执行结束,成功失败同一事件中不同状态
  119. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  120. - `workflow_run_id` (string) workflow 执行 ID
  121. - `event` (string) 固定为 `workflow_finished`
  122. - `data` (object) 详细内容
  123. - `id` (string) workflow 执行 ID
  124. - `workflow_id` (string) 关联 Workflow ID
  125. - `status` (string) 执行状态 `running` / `succeeded` / `failed` / `stopped`
  126. - `outputs` (json) Optional 输出内容
  127. - `error` (string) Optional 错误原因
  128. - `elapsed_time` (float) Optional 耗时(s)
  129. - `total_tokens` (int) Optional 总使用 tokens
  130. - `total_steps` (int) 总步数(冗余),默认 0
  131. - `created_at` (timestamp) 开始时间
  132. - `finished_at` (timestamp) 结束时间
  133. - `event: tts_message` TTS 音频流事件,即:语音合成输出。内容是Mp3格式的音频块,使用 base64 编码后的字符串,播放的时候直接解码即可。(开启自动播放才有此消息)
  134. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  135. - `message_id` (string) 消息唯一 ID
  136. - `audio` (string) 语音合成之后的音频块使用 Base64 编码之后的文本内容,播放的时候直接 base64 解码送入播放器即可
  137. - `created_at` (int) 创建时间戳,如:1705395332
  138. - `event: tts_message_end` TTS 音频流结束事件,收到这个事件表示音频流返回结束。
  139. - `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口
  140. - `message_id` (string) 消息唯一 ID
  141. - `audio` (string) 结束事件是没有音频的,所以这里是空字符串
  142. - `created_at` (int) 创建时间戳,如:1705395332
  143. - `event: ping` 每 10s 一次的 ping 事件,保持连接存活。
  144. ### Errors
  145. - 400,`invalid_param`,传入参数异常
  146. - 400,`app_unavailable`,App 配置不可用
  147. - 400,`provider_not_initialize`,无可用模型凭据配置
  148. - 400,`provider_quota_exceeded`,模型调用额度不足
  149. - 400,`model_currently_not_support`,当前模型不可用
  150. - 400,`workflow_request_error`,workflow 执行失败
  151. - 500,服务内部异常
  152. </Col>
  153. <Col sticky>
  154. <CodeGroup title="Request" tag="POST" label="/workflows/run" targetCode={`curl -X POST '${props.appDetail.api_base_url}/workflows/run' \\\n--header 'Authorization: Bearer {api_key}' \\\n--header 'Content-Type: application/json' \\\n--data-raw '{\n "inputs": ${JSON.stringify(props.inputs)},\n "response_mode": "streaming",\n "user": "abc-123"\n}'\n`}>
  155. ```bash {{ title: 'cURL' }}
  156. curl -X POST '${props.appDetail.api_base_url}/workflows/run' \
  157. --header 'Authorization: Bearer {api_key}' \
  158. --header 'Content-Type: application/json' \
  159. --data-raw '{
  160. "inputs": {},
  161. "response_mode": "streaming",
  162. "user": "abc-123"
  163. }'
  164. ```
  165. </CodeGroup>
  166. ### Blocking Mode
  167. <CodeGroup title="Response">
  168. ```json {{ title: 'Response' }}
  169. {
  170. "workflow_run_id": "djflajgkldjgd",
  171. "task_id": "9da23599-e713-473b-982c-4328d4f5c78a",
  172. "data": {
  173. "id": "fdlsjfjejkghjda",
  174. "workflow_id": "fldjaslkfjlsda",
  175. "status": "succeeded",
  176. "outputs": {
  177. "text": "Nice to meet you."
  178. },
  179. "error": null,
  180. "elapsed_time": 0.875,
  181. "total_tokens": 3562,
  182. "total_steps": 8,
  183. "created_at": 1705407629,
  184. "finished_at": 1727807631
  185. }
  186. }
  187. ```
  188. </CodeGroup>
  189. ### Streaming Mode
  190. <CodeGroup title="Response">
  191. ```streaming {{ title: 'Response' }}
  192. data: {"event": "workflow_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "sequence_number": 1, "created_at": 1679586595}}
  193. data: {"event": "node_started", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "created_at": 1679586595}}
  194. data: {"event": "node_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "node_id": "dfjasklfjdslag", "node_type": "start", "title": "Start", "index": 0, "predecessor_node_id": "fdljewklfklgejlglsd", "inputs": {}, "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "execution_metadata": {"total_tokens": 63127864, "total_price": 2.378, "currency": "USD"}, "created_at": 1679586595}}
  195. data: {"event": "workflow_finished", "task_id": "5ad4cb98-f0c7-4085-b384-88c403be6290", "workflow_run_id": "5ad498-f0c7-4085-b384-88cbe6290", "data": {"id": "5ad498-f0c7-4085-b384-88cbe6290", "workflow_id": "dfjasklfjdslag", "outputs": {}, "status": "succeeded", "elapsed_time": 0.324, "total_tokens": 63127864, "total_steps": "1", "created_at": 1679586595, "finished_at": 1679976595}}
  196. data: {"event": "tts_message", "conversation_id": "23dd85f3-1a41-4ea0-b7a9-062734ccfaf9", "message_id": "a8bdc41c-13b2-4c18-bfd9-054b9803038c", "created_at": 1721205487, "task_id": "3bf8a0bb-e73b-4690-9e66-4e429bad8ee7", "audio": "qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq"}
  197. data: {"event": "tts_message_end", "conversation_id": "23dd85f3-1a41-4ea0-b7a9-062734ccfaf9", "message_id": "a8bdc41c-13b2-4c18-bfd9-054b9803038c", "created_at": 1721205487, "task_id": "3bf8a0bb-e73b-4690-9e66-4e429bad8ee7", "audio": ""}
  198. ```
  199. </CodeGroup>
  200. </Col>
  201. </Row>
  202. ---
  203. <Heading
  204. url='/workflows/run/:workflow_id'
  205. method='GET'
  206. title='获取workflow执行情况'
  207. name='#get-workflow-run-detail'
  208. />
  209. <Row>
  210. <Col>
  211. 根据 workflow 执行 ID 获取 workflow 任务当前执行结果
  212. ### Path
  213. - `workflow_id` (string) workflow 执行 ID,可在流式返回 Chunk 中获取
  214. ### Response
  215. - `id` (string) workflow 执行 ID
  216. - `workflow_id` (string) 关联的 Workflow ID
  217. - `status` (string) 执行状态 `running` / `succeeded` / `failed` / `stopped`
  218. - `inputs` (json) 任务输入内容
  219. - `outputs` (json) 任务输出内容
  220. - `error` (string) 错误原因
  221. - `total_steps` (int) 任务执行总步数
  222. - `total_tokens` (int) 任务执行总 tokens
  223. - `created_at` (timestamp) 任务开始时间
  224. - `finished_at` (timestamp) 任务结束时间
  225. - `elapsed_time` (float) 耗时(s)
  226. </Col>
  227. <Col sticky>
  228. ### Request Example
  229. <CodeGroup title="Request" tag="GET" label="/workflows/run/:workflow_id" targetCode={`curl -X GET '${props.appDetail.api_base_url}/workflows/run/:workflow_id' \\\n-H 'Authorization: Bearer {api_key}' \\\n-H 'Content-Type: application/json'`}>
  230. ```bash {{ title: 'cURL' }}
  231. curl -X GET '${props.appDetail.api_base_url}/workflows/run/:workflow_id' \
  232. -H 'Authorization: Bearer {api_key}' \
  233. -H 'Content-Type: application/json'
  234. ```
  235. </CodeGroup>
  236. ### Response Example
  237. <CodeGroup title="Response">
  238. ```json {{ title: 'Response' }}
  239. {
  240. "id": "b1ad3277-089e-42c6-9dff-6820d94fbc76",
  241. "workflow_id": "19eff89f-ec03-4f75-b0fc-897e7effea02",
  242. "status": "succeeded",
  243. "inputs": "{\"sys.files\": [], \"sys.user_id\": \"abc-123\"}",
  244. "outputs": null,
  245. "error": null,
  246. "total_steps": 3,
  247. "total_tokens": 0,
  248. "created_at": "Thu, 18 Jul 2024 03:17:40 -0000",
  249. "finished_at": "Thu, 18 Jul 2024 03:18:10 -0000",
  250. "elapsed_time": 30.098514399956912
  251. }
  252. ```
  253. </CodeGroup>
  254. </Col>
  255. </Row>
  256. ---
  257. <Heading
  258. url='/workflows/tasks/:task_id/stop'
  259. method='POST'
  260. title='停止响应'
  261. name='#stop-generatebacks'
  262. />
  263. <Row>
  264. <Col>
  265. 仅支持流式模式。
  266. ### Path
  267. - `task_id` (string) 任务 ID,可在流式返回 Chunk 中获取
  268. ### Request Body
  269. - `user` (string) Required
  270. 用户标识,用于定义终端用户的身份,必须和发送消息接口传入 user 保持一致。
  271. ### Response
  272. - `result` (string) 固定返回 "success"
  273. </Col>
  274. <Col sticky>
  275. ### Request Example
  276. <CodeGroup title="Request" tag="POST" label="/workflows/tasks/:task_id/stop" targetCode={`curl -X POST '${props.appDetail.api_base_url}/workflows/tasks/:task_id/stop' \\\n-H 'Authorization: Bearer {api_key}' \\\n-H 'Content-Type: application/json' \\\n--data-raw '{"user": "abc-123"}'`}>
  277. ```bash {{ title: 'cURL' }}
  278. curl -X POST '${props.appDetail.api_base_url}/workflows/tasks/:task_id/stop' \
  279. -H 'Authorization: Bearer {api_key}' \
  280. -H 'Content-Type: application/json' \
  281. --data-raw '{
  282. "user": "abc-123"
  283. }'
  284. ```
  285. </CodeGroup>
  286. ### Response Example
  287. <CodeGroup title="Response">
  288. ```json {{ title: 'Response' }}
  289. {
  290. "result": "success"
  291. }
  292. ```
  293. </CodeGroup>
  294. </Col>
  295. </Row>
  296. ---
  297. <Heading
  298. url='/parameters'
  299. method='GET'
  300. title='获取应用配置信息'
  301. name='#parameters'
  302. />
  303. <Row>
  304. <Col>
  305. 用于进入页面一开始,获取功能开关、输入参数名称、类型及默认值等使用。
  306. ### Query
  307. <Properties>
  308. <Property name='user' type='string' key='user'>
  309. 用户标识,由开发者定义规则,需保证用户标识在应用内唯一。
  310. </Property>
  311. </Properties>
  312. ### Response
  313. - `user_input_form` (array[object]) 用户输入表单配置
  314. - `text-input` (object) 文本输入控件
  315. - `label` (string) 控件展示标签名
  316. - `variable` (string) 控件 ID
  317. - `required` (bool) 是否必填
  318. - `default` (string) 默认值
  319. - `paragraph` (object) 段落文本输入控件
  320. - `label` (string) 控件展示标签名
  321. - `variable` (string) 控件 ID
  322. - `required` (bool) 是否必填
  323. - `default` (string) 默认值
  324. - `select` (object) 下拉控件
  325. - `label` (string) 控件展示标签名
  326. - `variable` (string) 控件 ID
  327. - `required` (bool) 是否必填
  328. - `default` (string) 默认值
  329. - `options` (array[string]) 选项值
  330. - `file_upload` (object) 文件上传配置
  331. - `image` (object) 图片设置
  332. 当前仅支持图片类型:`png`, `jpg`, `jpeg`, `webp`, `gif`
  333. - `enabled` (bool) 是否开启
  334. - `number_limits` (int) 图片数量限制,默认 3
  335. - `transfer_methods` (array[string]) 传递方式列表,remote_url , local_file,必选一个
  336. - `system_parameters` (object) 系统参数
  337. - `image_file_size_limit` (string) 图片文件上传大小限制(MB)
  338. </Col>
  339. <Col sticky>
  340. <CodeGroup title="Request" tag="GET" label="/parameters" targetCode={` curl -X GET '${props.appDetail.api_base_url}/parameters?user=abc-123'`}>
  341. ```bash {{ title: 'cURL' }}
  342. curl -X GET '${props.appDetail.api_base_url}/parameters?user=abc-123' \
  343. --header 'Authorization: Bearer {api_key}'
  344. ```
  345. </CodeGroup>
  346. <CodeGroup title="Response">
  347. ```json {{ title: 'Response' }}
  348. {
  349. "user_input_form": [
  350. {
  351. "paragraph": {
  352. "label": "Query",
  353. "variable": "query",
  354. "required": true,
  355. "default": ""
  356. }
  357. }
  358. ],
  359. "file_upload": {
  360. "image": {
  361. "enabled": false,
  362. "number_limits": 3,
  363. "detail": "high",
  364. "transfer_methods": [
  365. "remote_url",
  366. "local_file"
  367. ]
  368. }
  369. },
  370. "system_parameters": {
  371. "image_file_size_limit": "10"
  372. }
  373. }
  374. ```
  375. </CodeGroup>
  376. </Col>
  377. </Row>