How to use Timer output

[Chenguoqing2008]

Thank you for sharing these code samples of using azure functions. I am learning how to use it now it is helpful. I have one concern today of how to add input and output in Timer function. From the official document function reference I read that "Input" and "Output" bindings seem to be not allowed in Timer functions.

Bindings Type | 1.x | 2.x1 | Trigger | Input | Output| Timer | ✔ | ✔ | ✔ |  -- | -- |

I also spent some time to research the material on the web and think a workaround to reloved this. This is because my project manager ask me to move the VM script to azure functions.

When i saw your code example of Timer i think maybe this is what i want. But, can you explain this to me?

{
      "type": "documentDB",
      "name": "outputDocument",
      "databaseName": "functions2docdb",
      "collectionName": "indexstats",
      "createIfNotExists": true,
      "connection": "<Connection string for your documentdb account>",
      "direction": "out"
    }

How can you use the "direction": "out"? This usage seems contrdict to the Microsoft azure functions document usage.

Thanks.

[yokawasa]

@Chenguoqing2008 You can configure output binding with Timer Trigger without any tricks. Here are references:

• CosmosDB output binding for V1 functions: https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-cosmosdb
• CosmosDB output binding for V2 functions: https://docs.microsoft.com/en-us/azure/azure-functions/functions-bindings-cosmosdb-v2

By the way, which version are you going to use- V1 or V2?

[yokawasa]

@Chenguoqing2008 FYI

I added V2 Function Timer Tigger sample: https://github.com/yokawasa/azure-functions-python-samples/tree/master/v2functions/timer-trigger-cosmosdb-output-binding

Hope it would help

[Chenguoqing2008]

@yokawasa I am using Azure functions V2. Since your code is workable. Why MicroSoft did document the Timer trigger as this?

Bindings Type | 1.x | 2.x1 | Trigger | Input | Output| Timer | ✔ | ✔ | ✔ | -- | -- |

This bring me a lot of confusing.

[yokawasa]

@Chenguoqing2008 I've submit PR to fix the document. https://github.com/MicrosoftDocs/azure-docs/pull/24041

[Chenguoqing2008]

That's great. Thanks.