[英]Azure Blob Trigger Python Function to Write To CosmosDB Error
I have JSON documents being uploaded into an Azure Blob Container and I have written an Azure Python Function to write the JSON into CosmosDB. 触发工作正常,但我得到一个错误。 这是 Python function:
import logging
import azure.functions as func
def main(myblob: func.InputStream, doc: func.Out[func.Document]):
logging.info(f"Python blob trigger function processed blob \n"
f"Name: {myblob.name}\n"
f"Blob Size: {myblob.length} bytes")
json_data = myblob.read()
try:
# Store output data using Cosmos DB output binding
doc.set(func.Document.from_json(json_data))
except Exception as e:
logging.info(f"Error: {e}")
print('Error:')
print(e)
这是 function.json 文件:
{
"scriptFile": "__init__.py",
"bindings": [
{
"name": "myblob",
"type": "blobTrigger",
"direction": "in",
"path": "cloud-save-blob-container/{name}",
"connection": "cloudsavestorage_STORAGE"
},
{
"type": "cosmosDB",
"name": "userJson",
"databaseName": "ToDoList",
"collectionName": "Items",
"createIfNotExists": false,
"connectionStringSetting": "MyCosmosDBConnectionString",
"direction": "out"
}
],
"disabled": false
}
这是我在 Azure 门户中看到的错误:
Result: Failure Exception: FunctionLoadError: cannot load the JsonBlobTrigger1 function: the following parameters are declared in Python but not in function.json: {'doc'} Stack: File "/azure-functions-host/workers/python/3.8/LINUX /X64/azure_functions_worker/dispatcher.py”,第 290 行,在 _handle__function_load_request self._functions.add_function(文件“/azure-functions-host/workers/python/3.8/LINUX/X64/azure_functions_worker/functions.py”,第 112 行,在 add_function 中引发 FunctionLoadError(
感谢您的帮助。
我已经解决了这个问题,我的 Python Function 被触发并将数据放入 Cosmos DB,就像我想要的那样。 问题出在我的 Python 代码上。 我在两个应该是“userJson”的地方有“doc”。 一,在“def main(...):”行中,再次在“try:”块中,“doc.set(...)”,它与function.Z466DEEC76ECDF5FCA65D3875中的Output绑定名称不匹配。 一旦我将两次出现的“doc”更改为“userJson”,它就起作用了。
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