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import { CodeGroup } from '../code.tsx' | |
import { Row, Col, Properties, Property, Heading, SubProperty, Paragraph } from '../md.tsx' | |
# Workflow 应用 API | |
Workflow 应用无会话支持,适合用于翻译/文章写作/总结 AI 等等。 | |
<div> | |
### Base URL | |
<CodeGroup title="Code" targetCode={props.appDetail.api_base_url}> | |
```javascript | |
``` | |
</CodeGroup> | |
### Authentication | |
Dify Service API 使用 `API-Key` 进行鉴权。 | |
<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> | |
所有 API 请求都应在 **`Authorization`** HTTP Header 中包含您的 `API-Key`,如下所示: | |
<CodeGroup title="Code"> | |
```javascript | |
Authorization: Bearer {API_KEY} | |
``` | |
</CodeGroup> | |
</div> | |
--- | |
<Heading | |
url='/workflows/run' | |
method='POST' | |
title='执行 workflow' | |
name='#Execute-Workflow' | |
/> | |
<Row> | |
<Col> | |
执行 workflow,没有已发布的 workflow,不可执行。 | |
### Request Body | |
- `inputs` (object) Required | |
允许传入 App 定义的各变量值。 | |
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。 | |
- `response_mode` (string) Required | |
返回响应模式,支持: | |
- `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。 | |
- `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)。 | |
<i>由于 Cloudflare 限制,请求会在 100 秒超时无返回后中断。</i> | |
- `user` (string) Required | |
用户标识,用于定义终端用户的身份,方便检索、统计。 | |
由开发者定义规则,需保证用户标识在应用内唯一。 | |
- `files` (array[object]) Optional | |
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。 | |
- `type` (string) 支持类型:图片 `image`(目前仅支持图片格式)。 | |
- `transfer_method` (string) 传递方式,`remote_url` 图片地址 / `local_file` 上传文件 | |
- `url` (string) 图片地址(仅当传递方式为 `remote_url` 时) | |
- `upload_file_id` (string) (string) 上传文件 ID(仅当传递方式为 `local_file` 时) | |
### Response | |
当 `response_mode` 为 `blocking` 时,返回 CompletionResponse object。 | |
当 `response_mode` 为 `streaming`时,返回 ChunkCompletionResponse object 流式序列。 | |
### CompletionResponse | |
返回完整的 App 结果,`Content-Type` 为 `application/json` 。 | |
- `workflow_run_id` (string) workflow 执行 ID | |
- `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口 | |
- `data` (object) 详细内容 | |
- `id` (string) workflow 执行 ID | |
- `workflow_id` (string) 关联 Workflow ID | |
- `status` (string) 执行状态, `running` / `succeeded` / `failed` / `stopped` | |
- `outputs` (json) Optional 输出内容 | |
- `error` (string) Optional 错误原因 | |
- `elapsed_time` (float) Optional 耗时(s) | |
- `total_tokens` (int) Optional 总使用 tokens | |
- `total_steps` (int) 总步数(冗余),默认 0 | |
- `created_at` (timestamp) 开始时间 | |
- `finished_at` (timestamp) 结束时间 | |
### ChunkCompletionResponse | |
返回 App 输出的流式块,`Content-Type` 为 `text/event-stream`。 | |
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: | |
<CodeGroup> | |
```streaming {{ title: 'Response' }} | |
data: {"event": "message", "task_id": "900bbd43-dc0b-4383-a372-aa6e6c414227", "id": "663c5084-a254-4040-8ad3-51f2a3c1a77c", "answer": "Hi", "created_at": 1705398420}\n\n | |
``` | |
</CodeGroup> | |
流式块中根据 `event` 不同,结构也不同,包含以下类型: | |
- `event: workflow_started` workflow 开始执行 | |
- `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口 | |
- `workflow_run_id` (string) workflow 执行 ID | |
- `event` (string) 固定为 `workflow_started` | |
- `data` (object) 详细内容 | |
- `id` (string) workflow 执行 ID | |
- `workflow_id` (string) 关联 Workflow ID | |
- `sequence_number` (int) 自增序号,App 内自增,从 1 开始 | |
- `created_at` (timestamp) 开始时间 | |
- `event: node_started` node 开始执行 | |
- `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口 | |
- `workflow_run_id` (string) workflow 执行 ID | |
- `event` (string) 固定为 `node_started` | |
- `data` (object) 详细内容 | |
- `id` (string) workflow 执行 ID | |
- `node_id` (string) 节点 ID | |
- `node_type` (string) 节点类型 | |
- `title` (string) 节点名称 | |
- `index` (int) 执行序号,用于展示 Tracing Node 顺序 | |
- `predecessor_node_id` (string) 前置节点 ID,用于画布展示执行路径 | |
- `inputs` (array[object]) 节点中所有使用到的前置节点变量内容 | |
- `created_at` (timestamp) 开始时间 | |
- `event: node_finished` node 执行结束,成功失败同一事件中不同状态 | |
- `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口 | |
- `workflow_run_id` (string) workflow 执行 ID | |
- `event` (string) 固定为 `node_finished` | |
- `data` (object) 详细内容 | |
- `id` (string) node 执行 ID | |
- `node_id` (string) 节点 ID | |
- `index` (int) 执行序号,用于展示 Tracing Node 顺序 | |
- `predecessor_node_id` (string) optional 前置节点 ID,用于画布展示执行路径 | |
- `inputs` (array[object]) 节点中所有使用到的前置节点变量内容 | |
- `process_data` (json) Optional 节点过程数据 | |
- `outputs` (json) Optional 输出内容 | |
- `status` (string) 执行状态 `running` / `succeeded` / `failed` / `stopped` | |
- `error` (string) Optional 错误原因 | |
- `elapsed_time` (float) Optional 耗时(s) | |
- `execution_metadata` (json) 元数据 | |
- `total_tokens` (int) optional 总使用 tokens | |
- `total_price` (decimal) optional 总费用 | |
- `currency` (string) optional 货币,如 `USD` / `RMB` | |
- `created_at` (timestamp) 开始时间 | |
- `event: workflow_finished` workflow 执行结束,成功失败同一事件中不同状态 | |
- `task_id` (string) 任务 ID,用于请求跟踪和下方的停止响应接口 | |
- `workflow_run_id` (string) workflow 执行 ID | |
- `event` (string) 固定为 `workflow_finished` | |
- `data` (object) 详细内容 | |
- `id` (string) workflow 执行 ID | |
- `workflow_id` (string) 关联 Workflow ID | |
- `status` (string) 执行状态 `running` / `succeeded` / `failed` / `stopped` | |
- `outputs` (json) Optional 输出内容 | |
- `error` (string) Optional 错误原因 | |
- `elapsed_time` (float) Optional 耗时(s) | |
- `total_tokens` (int) Optional 总使用 tokens | |
- `total_steps` (int) 总步数(冗余),默认 0 | |
- `created_at` (timestamp) 开始时间 | |
- `finished_at` (timestamp) 结束时间 | |
- `event: ping` 每 10s 一次的 ping 事件,保持连接存活。 | |
### Errors | |
- 400,`invalid_param`,传入参数异常 | |
- 400,`app_unavailable`,App 配置不可用 | |
- 400,`provider_not_initialize`,无可用模型凭据配置 | |
- 400,`provider_quota_exceeded`,模型调用额度不足 | |
- 400,`model_currently_not_support`,当前模型不可用 | |
- 400,`workflow_request_error`,workflow 执行失败 | |
- 500,服务内部异常 | |
</Col> | |
<Col sticky> | |
<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": ${JSON.stringify(props.inputs)},\n "response_mode": "streaming",\n "user": "abc-123"\n}'\n`}> | |
```bash {{ title: 'cURL' }} | |
curl -X POST '${props.appDetail.api_base_url}/workflows/run' \ | |
--header 'Authorization: Bearer {api_key}' \ | |
--header 'Content-Type: application/json' \ | |
--data-raw '{ | |
"inputs": {}, | |
"response_mode": "streaming", | |
"user": "abc-123" | |
}' | |
``` | |
</CodeGroup> | |
### Blocking Mode | |
<CodeGroup title="Response"> | |
```json {{ title: 'Response' }} | |
{ | |
"workflow_run_id": "djflajgkldjgd", | |
"task_id": "9da23599-e713-473b-982c-4328d4f5c78a", | |
"data": { | |
"id": "fdlsjfjejkghjda", | |
"workflow_id": "fldjaslkfjlsda", | |
"status": "succeeded", | |
"outputs": { | |
"text": "Nice to meet you." | |
}, | |
"error": null, | |
"elapsed_time": 0.875, | |
"total_tokens": 3562, | |
"total_steps": 8, | |
"created_at": 1705407629, | |
"finished_at": 1727807631 | |
} | |
} | |
``` | |
</CodeGroup> | |
### Streaming Mode | |
<CodeGroup title="Response"> | |
```streaming {{ title: 'Response' }} | |
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}} | |
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}} | |
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}} | |
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}} | |
``` | |
</CodeGroup> | |
</Col> | |
</Row> | |
--- | |
<Heading | |
url='/workflows/:task_id/stop' | |
method='POST' | |
title='停止响应' | |
name='#stop-generatebacks' | |
/> | |
<Row> | |
<Col> | |
仅支持流式模式。 | |
### Path | |
- `task_id` (string) 任务 ID,可在流式返回 Chunk 中获取 | |
### Request Body | |
- `user` (string) Required | |
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。 | |
### Response | |
- `result` (string) 固定返回 "success" | |
</Col> | |
<Col sticky> | |
### Request Example | |
<CodeGroup title="Request" tag="POST" label="/workflows/:task_id/stop" targetCode={`curl -X POST '${props.appDetail.api_base_url}/workflows/:task_id/stop' \\\n-H 'Authorization: Bearer {api_key}' \\\n-H 'Content-Type: application/json' \\\n--data-raw '{"user": "abc-123"}'`}> | |
```bash {{ title: 'cURL' }} | |
curl -X POST '${props.appDetail.api_base_url}/workflows/:task_id/stop' \ | |
-H 'Authorization: Bearer {api_key}' \ | |
-H 'Content-Type: application/json' \ | |
--data-raw '{ | |
"user": "abc-123" | |
}' | |
``` | |
</CodeGroup> | |
### Response Example | |
<CodeGroup title="Response"> | |
```json {{ title: 'Response' }} | |
{ | |
"result": "success" | |
} | |
``` | |
</CodeGroup> | |
</Col> | |
</Row> | |
--- | |
<Heading | |
url='/parameters' | |
method='GET' | |
title='获取应用配置信息' | |
name='#parameters' | |
/> | |
<Row> | |
<Col> | |
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。 | |
### Query | |
<Properties> | |
<Property name='user' type='string' key='user'> | |
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。 | |
</Property> | |
</Properties> | |
### Response | |
- `user_input_form` (array[object]) 用户输入表单配置 | |
- `text-input` (object) 文本输入控件 | |
- `label` (string) 控件展示标签名 | |
- `variable` (string) 控件 ID | |
- `required` (bool) 是否必填 | |
- `default` (string) 默认值 | |
- `paragraph` (object) 段落文本输入控件 | |
- `label` (string) 控件展示标签名 | |
- `variable` (string) 控件 ID | |
- `required` (bool) 是否必填 | |
- `default` (string) 默认值 | |
- `select` (object) 下拉控件 | |
- `label` (string) 控件展示标签名 | |
- `variable` (string) 控件 ID | |
- `required` (bool) 是否必填 | |
- `default` (string) 默认值 | |
- `options` (array[string]) 选项值 | |
- `file_upload` (object) 文件上传配置 | |
- `image` (object) 图片设置 | |
当前仅支持图片类型:`png`, `jpg`, `jpeg`, `webp`, `gif` | |
- `enabled` (bool) 是否开启 | |
- `number_limits` (int) 图片数量限制,默认 3 | |
- `transfer_methods` (array[string]) 传递方式列表,remote_url , local_file,必选一个 | |
- `system_parameters` (object) 系统参数 | |
- `image_file_size_limit` (string) 图片文件上传大小限制(MB) | |
</Col> | |
<Col sticky> | |
<CodeGroup title="Request" tag="GET" label="/parameters" targetCode={` curl -X GET '${props.appDetail.api_base_url}/parameters?user=abc-123'`}> | |
```bash {{ title: 'cURL' }} | |
curl -X GET '${props.appDetail.api_base_url}/parameters?user=abc-123' \ | |
--header 'Authorization: Bearer {api_key}' | |
``` | |
</CodeGroup> | |
<CodeGroup title="Response"> | |
```json {{ title: 'Response' }} | |
{ | |
"user_input_form": [ | |
{ | |
"paragraph": { | |
"label": "Query", | |
"variable": "query", | |
"required": true, | |
"default": "" | |
} | |
} | |
], | |
"file_upload": { | |
"image": { | |
"enabled": false, | |
"number_limits": 3, | |
"detail": "high", | |
"transfer_methods": [ | |
"remote_url", | |
"local_file" | |
] | |
} | |
}, | |
"system_parameters": { | |
"image_file_size_limit": "10" | |
} | |
} | |
``` | |
</CodeGroup> | |
</Col> | |
</Row> | |