Azure / Azure/azure-functions-durable-python
Worker failed to load Durable Entity function when binding a Storage Queue
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- Python
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描述
🐛 **Describe the bug**
> I'm learning about Durable Entities , not sure if this is supported or not. I'm using counter sample provided [here](https://github.com/Azure/azure-functions-durable-python/tree/dev/samples/counter_entity) and trying to bind a Storage Queue . However worker complains about not finding the corresponding parameter:
```
[2022-07-22T15:02:30.124Z] Worker failed to load function: 'Counter' with function id: 'a80f6d9c-8814-4549-bc62-155546eaf880'.
[2022-07-22T15:02:30.125Z] Result: Failure
Exception: FunctionLoadError: cannot load the Counter function: the following parameters are declared in function.json but not in Python: {'outputQueueItem'}
```
🤔 **Expected behavior**
> What should have happened?
Worker is able to load Function
☕ **Steps to reproduce**
> What Durable Functions patterns are you using, if any?
HTTPTrigger > Orchestration > Entity
> Any minimal reproducer we can use?
https://github.com/enriqueayala/azure-function-counter.git
**_ _init.py_ _**
```
import logging
import json
import azure.functions as func
import azure.durable_functions as df
def entity_function(context: df.DurableEntityContext, outputQueueItem: func.Out[str]):
"""A Counter Durable Entity.
A simple example of a Durable Entity that implements
a simple counter.
Parameters
----------
context (df.DurableEntityContext):
The Durable Entity context, which exports an API
for implementing durable entities.
"""
current_value = context.get_state(lambda: 0)
operation = context.operation_name
if operation == "add":
amount = context.get_input()
current_value += amount
elif operation == "reset":
current_value = 0
elif operation == "get":
pass
context.set_state(current_value)
context.set_result(current_value)
outputQueueItem.set(current_value)
main = df.Entity.create(entity_function)
```
**function.json**
```
{
"scriptFile": "__init__.py",
"bindings": [
{
"name": "context",
"type": "entityTrigger",
"direction": "in"
},
{
"type": "queue",
"direction": "out",
"name": "outputQueueItem",
"queueName": "outqueue",
"connection": "AzureWebJobsStorage"
}
]
}
```
> Are you running this locally or on Azure?
Locally
贡献指南
调研方向
从已复现的 Counter 示例的 __init__.py 和 function.json 开始,然后跟踪 entity_function 入口点的加载方式,以及其 outputQueueItem 绑定的验证方式。运行本地 reproducer,并比较存在 queue 绑定时的函数加载情况;当 Counter 函数能够通过声明的 Storage Queue 输出成功加载时,即表示完成。
由索引模型根据 Issue 内容生成。
评估
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