Telegram Chat with Buffering

工作流概述

这是一个包含22个节点的复杂工作流,主要用于自动化处理各种任务。

工作流源代码

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{
  "id": "DnHvQ3KL8v8r5L5Z",
  "meta": {
    "instanceId": "ac63467607103d9c95dd644384984672b90b1cb03e07edbaf18fe72b2a6c45bb",
    "templateCredsSetupCompleted": true
  },
  "name": "Telegram Chat with Buffering",
  "tags": [],
  "nodes": [
    {
      "id": "a3cc74e9-c696-48de-a04e-d48555641897",
      "name": "Sticky Note",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1640,
        -800
      ],
      "parameters": {
        "color": 7,
        "width": 220,
        "height": 280,
        "content": "## 1. Receive Message

"
      },
      "typeVersion": 1
    },
    {
      "id": "ff18667d-0a31-4768-acf8-ed0d53b2f382",
      "name": "Sticky Note1",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        160,
        -840
      ],
      "parameters": {
        "color": 7,
        "width": 600,
        "height": 520,
        "content": "## 3. AI Assistant
"
      },
      "typeVersion": 1
    },
    {
      "id": "ce90f954-19b6-4224-ae88-b20c4da639e6",
      "name": "Reply",
      "type": "n8n-nodes-base.telegram",
      "position": [
        920,
        -700
      ],
      "webhookId": "e3313c88-0d56-4d06-81cf-b48870dfe2fe",
      "parameters": {
        "text": "={{ $json.output }}",
        "chatId": "={{ $('Receive Message').item.json.message.chat.id }}",
        "additionalFields": {
          "appendAttribution": false
        }
      },
      "credentials": {
        "telegramApi": {
          "id": "lvrGkOs0ywXp5agp",
          "name": "Telegram bsde.ai"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "6f46d89b-034c-47ea-a217-8d007bec1531",
      "name": "Receive Message",
      "type": "n8n-nodes-base.telegramTrigger",
      "position": [
        -1580,
        -680
      ],
      "webhookId": "5047a673-ca1d-4e87-b51b-893108de0a59",
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "credentials": {
        "telegramApi": {
          "id": "lvrGkOs0ywXp5agp",
          "name": "Telegram bsde.ai"
        }
      },
      "typeVersion": 1.1
    },
    {
      "id": "0f391daa-0e74-4058-8923-52f3c050c9ad",
      "name": "Wait 10 Seconds",
      "type": "n8n-nodes-base.wait",
      "position": [
        -1000,
        -580
      ],
      "webhookId": "87994c9a-fd20-48b6-8dbe-9af36dc40b2f",
      "parameters": {
        "amount": 10
      },
      "typeVersion": 1.1
    },
    {
      "id": "8e6495d8-db6e-4692-ade5-45239049de34",
      "name": "Sticky Note3",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1320,
        -760
      ],
      "parameters": {
        "color": 7,
        "width": 1400,
        "height": 440,
        "content": "## 2. Buffer Incoming Messages"
      },
      "typeVersion": 1
    },
    {
      "id": "d4876fd2-2e0b-4f82-9dc3-553f926310bd",
      "name": "Add to Queued Messages",
      "type": "n8n-nodes-base.supabase",
      "position": [
        -1240,
        -680
      ],
      "parameters": {
        "tableId": "message_queue",
        "fieldsUi": {
          "fieldValues": [
            {
              "fieldId": "user_id",
              "fieldValue": "={{ $json.message.chat.id }}"
            },
            {
              "fieldId": "message",
              "fieldValue": "={{ $json.message.text }}"
            },
            {
              "fieldId": "message_id",
              "fieldValue": "={{ $json.message.message_id }}"
            }
          ]
        }
      },
      "credentials": {
        "supabaseApi": {
          "id": "1iEg1EzFrF29iqp2",
          "name": "Supabase (bsde.ai)"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "a2eeb77f-2d74-44ac-9812-c3659d2e2803",
      "name": "No Operation, do nothing",
      "type": "n8n-nodes-base.noOp",
      "position": [
        -340,
        -460
      ],
      "parameters": {},
      "typeVersion": 1
    },
    {
      "id": "638fc82e-aba1-4deb-b506-33dcf4746896",
      "name": "Aggregate",
      "type": "n8n-nodes-base.aggregate",
      "position": [
        220,
        -700
      ],
      "parameters": {
        "options": {},
        "fieldsToAggregate": {
          "fieldToAggregate": [
            {
              "fieldToAggregate": "message"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "772f60e5-e52f-4779-aa03-e4d532ee4b5c",
      "name": "Delete Queued Messages",
      "type": "n8n-nodes-base.supabase",
      "position": [
        -100,
        -700
      ],
      "parameters": {
        "filters": {
          "conditions": [
            {
              "keyName": "user_id",
              "keyValue": "={{ $json.user_id }}",
              "condition": "eq"
            }
          ]
        },
        "tableId": "message_queue",
        "operation": "delete"
      },
      "credentials": {
        "supabaseApi": {
          "id": "1iEg1EzFrF29iqp2",
          "name": "Supabase (bsde.ai)"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "16b46a70-85a0-4c8c-94ba-172ebe9aafa4",
      "name": "Sticky Note2",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        860,
        -780
      ],
      "parameters": {
        "color": 7,
        "width": 280,
        "height": 260,
        "content": "## 4. Send Reply


"
      },
      "typeVersion": 1
    },
    {
      "id": "9162f110-465f-4cd6-9f03-17751d7e43a4",
      "name": "OpenAI Chat Model",
      "type": "@n8n/n8n-nodes-langchain.lmChatOpenAi",
      "position": [
        380,
        -460
      ],
      "parameters": {
        "model": {
          "__rl": true,
          "mode": "list",
          "value": "gpt-4o-mini"
        },
        "options": {}
      },
      "credentials": {
        "openAiApi": {
          "id": "1OMpAMAKR9l3eUDI",
          "name": "OpenAi account"
        }
      },
      "typeVersion": 1.2
    },
    {
      "id": "b47ef0c9-725b-4837-b9e9-96a4ff2b3636",
      "name": "Sort by Message ID",
      "type": "n8n-nodes-base.sort",
      "position": [
        -580,
        -680
      ],
      "parameters": {
        "options": {},
        "sortFieldsUi": {
          "sortField": [
            {
              "fieldName": "message_id"
            }
          ]
        }
      },
      "typeVersion": 1
    },
    {
      "id": "1aa80c99-eec8-4174-bcf3-c6873354ed0f",
      "name": "Get Queued Messages",
      "type": "n8n-nodes-base.supabase",
      "position": [
        -780,
        -680
      ],
      "parameters": {
        "filters": {
          "conditions": [
            {
              "keyName": "user_id",
              "keyValue": "={{ $('Receive Message').item.json.message.from.id }}",
              "condition": "eq"
            }
          ]
        },
        "tableId": "message_queue",
        "operation": "getAll",
        "returnAll": true
      },
      "credentials": {
        "supabaseApi": {
          "id": "1iEg1EzFrF29iqp2",
          "name": "Supabase (bsde.ai)"
        }
      },
      "typeVersion": 1
    },
    {
      "id": "85050328-b5aa-47fe-802c-7d9f31f225cb",
      "name": "Check Most Recent Message",
      "type": "n8n-nodes-base.if",
      "position": [
        -360,
        -680
      ],
      "parameters": {
        "options": {},
        "conditions": {
          "options": {
            "version": 2,
            "leftValue": "",
            "caseSensitive": true,
            "typeValidation": "loose"
          },
          "combinator": "and",
          "conditions": [
            {
              "id": "8852bab7-230e-442a-a4a2-994e979c8f9f",
              "operator": {
                "type": "number",
                "operation": "equals"
              },
              "leftValue": "={{ $input.last().json.message_id }}
",
              "rightValue": "={{ $('Receive Message').item.json.message.message_id }}"
            }
          ]
        },
        "looseTypeValidation": true
      },
      "typeVersion": 2.2
    },
    {
      "id": "bed86d81-bb57-42ce-aaa7-4bdc21e1651c",
      "name": "AI Agent",
      "type": "@n8n/n8n-nodes-langchain.agent",
      "position": [
        420,
        -700
      ],
      "parameters": {
        "text": "={{ $json.message.join(String.fromCharCode(10)) }}",
        "options": {},
        "promptType": "define"
      },
      "typeVersion": 1.7
    },
    {
      "id": "4f468a14-fbea-44ec-a2b8-e4b3785c0362",
      "name": "Postgres Chat Memory",
      "type": "@n8n/n8n-nodes-langchain.memoryPostgresChat",
      "position": [
        560,
        -460
      ],
      "parameters": {
        "sessionKey": "={{ $('Receive Message').item.json.message.chat.id }}",
        "sessionIdType": "customKey"
      },
      "credentials": {
        "postgres": {
          "id": "tzLXHvhykxvYghPC",
          "name": "bsde.ai Supabase (Session Pooler)"
        }
      },
      "typeVersion": 1.3
    },
    {
      "id": "610516e8-d4ad-448e-ac97-17aad1a31862",
      "name": "Sticky Note4",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -2420,
        -820
      ],
      "parameters": {
        "width": 700,
        "height": 420,
        "content": "## Allow Users to Send a Sequence of Messages to an AI Agent in Telegram with Supabase
### Use Case
When creating chatbots that interface through applications such as **Telegram** and **WhatsApp**, users can often sends multiple shorter messages in quick succession, in place of a single, longer message. This workflow accounts for this behaviour.
### What it Does
This workflow allows users to send several messages in quick succession, treating them as one coherent conversation instead of separate messages requiring individual responses. 
### How it Works
1. When messages arrive, they are stored in a **Supabase PostgreSQL** table
2. The system waits briefly to see if additional messages arrive
3. If no new messages arrive within the waiting period, all queued messages are:
   - Combined and processed as a single conversation
   - Responded to with one unified reply
   - Deleted from the queue"
      },
      "typeVersion": 1
    },
    {
      "id": "c8bd8777-fb0f-4941-8674-f5bb7c264506",
      "name": "Sticky Note5",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1640,
        -1060
      ],
      "parameters": {
        "width": 520,
        "height": 220,
        "content": "### Setup
1. Create a table in Supabase called **message_queue**. It needs to have the following columns: **user_id** (`uint8`), **message** (`text`), and **message_id** (`uint8`)
2. Add your **Telegram**, **Supabase**, **OpenAI**, and **PostgreSQL** credentials
3. Activate the workflow and test by sending multiple messages the Telegram bot in one go
4. Wait ten seconds after which you will receive a single reply to all of your messages"
      },
      "typeVersion": 1
    },
    {
      "id": "24604fc7-7957-4e20-8303-b31f2ce1e257",
      "name": "Sticky Note6",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        -1060,
        -700
      ],
      "parameters": {
        "color": 5,
        "width": 220,
        "height": 280,
        "content": "### Modification
Change the value of *Wait Amount* to vary the buffering window"
      },
      "typeVersion": 1
    },
    {
      "id": "24f388f3-5655-4bd4-9c30-978efb2dc400",
      "name": "Sticky Note8",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        180,
        -480
      ],
      "parameters": {
        "color": 5,
        "width": 340,
        "height": 140,
        "content": "### Modification
Replace this sub-node 
to use a different language
 model"
      },
      "typeVersion": 1
    },
    {
      "id": "3db12526-6b97-4e3a-b53d-987f5d20c46e",
      "name": "Sticky Note9",
      "type": "n8n-nodes-base.stickyNote",
      "position": [
        380,
        -800
      ],
      "parameters": {
        "color": 5,
        "width": 340,
        "height": 240,
        "content": "### Modification
Add a **System Message** to tailor the chatbot to your use case"
      },
      "typeVersion": 1
    }
  ],
  "active": true,
  "pinData": {},
  "settings": {
    "callerPolicy": "workflowsFromSameOwner",
    "executionOrder": "v1"
  },
  "versionId": "e415eb18-1bb9-426b-b759-0ba269db1f8f",
  "connections": {
    "AI Agent": {
      "main": [
        [
          {
            "node": "Reply",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Aggregate": {
      "main": [
        [
          {
            "node": "AI Agent",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Receive Message": {
      "main": [
        [
          {
            "node": "Add to Queued Messages",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Wait 10 Seconds": {
      "main": [
        [
          {
            "node": "Get Queued Messages",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "OpenAI Chat Model": {
      "ai_languageModel": [
        [
          {
            "node": "AI Agent",
            "type": "ai_languageModel",
            "index": 0
          }
        ]
      ]
    },
    "Sort by Message ID": {
      "main": [
        [
          {
            "node": "Check Most Recent Message",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Queued Messages": {
      "main": [
        [
          {
            "node": "Sort by Message ID",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Postgres Chat Memory": {
      "ai_memory": [
        [
          {
            "node": "AI Agent",
            "type": "ai_memory",
            "index": 0
          }
        ]
      ]
    },
    "Add to Queued Messages": {
      "main": [
        [
          {
            "node": "Wait 10 Seconds",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Delete Queued Messages": {
      "main": [
        [
          {
            "node": "Aggregate",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Check Most Recent Message": {
      "main": [
        [
          {
            "node": "Delete Queued Messages",
            "type": "main",
            "index": 0
          }
        ],
        [
          {
            "node": "No Operation, do nothing",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  }
}

功能特点

  • 自动检测新邮件
  • AI智能内容分析
  • 自定义分类规则
  • 批量处理能力
  • 详细的处理日志

技术分析

节点类型及作用

  • Stickynote
  • Telegram
  • Telegramtrigger
  • Wait
  • Supabase

复杂度评估

配置难度:
★★★★☆
维护难度:
★★☆☆☆
扩展性:
★★★★☆

实施指南

前置条件

  • 有效的Gmail账户
  • n8n平台访问权限
  • Google API凭证
  • AI分类服务订阅

配置步骤

  1. 在n8n中导入工作流JSON文件
  2. 配置Gmail节点的认证信息
  3. 设置AI分类器的API密钥
  4. 自定义分类规则和标签映射
  5. 测试工作流执行
  6. 配置定时触发器(可选)

关键参数

参数名称 默认值 说明
maxEmails 50 单次处理的最大邮件数量
confidenceThreshold 0.8 分类置信度阈值
autoLabel true 是否自动添加标签

最佳实践

优化建议

  • 定期更新AI分类模型以提高准确性
  • 根据邮件量调整处理批次大小
  • 设置合理的分类置信度阈值
  • 定期清理过期的分类规则

安全注意事项

  • 妥善保管API密钥和认证信息
  • 限制工作流的访问权限
  • 定期审查处理日志
  • 启用双因素认证保护Gmail账户

性能优化

  • 使用增量处理减少重复工作
  • 缓存频繁访问的数据
  • 并行处理多个邮件分类任务
  • 监控系统资源使用情况

故障排除

常见问题

邮件未被正确分类

检查AI分类器的置信度阈值设置,适当降低阈值或更新训练数据。

Gmail认证失败

确认Google API凭证有效且具有正确的权限范围,重新进行OAuth授权。

调试技巧

  • 启用详细日志记录查看每个步骤的执行情况
  • 使用测试邮件验证分类逻辑
  • 检查网络连接和API服务状态
  • 逐步执行工作流定位问题节点

错误处理

工作流包含以下错误处理机制:

  • 网络超时自动重试(最多3次)
  • API错误记录和告警
  • 处理失败邮件的隔离机制
  • 异常情况下的回滚操作