将输出写入Azure函数中的Blob [英] Write output to Blob in Azure Functions
问题描述
我正在学习使用Azure功能.所以,我听起来可能很愚蠢.我正在编写一个计时器触发功能,该功能每1分钟运行一次,并将两个数字相加并写入文件.这可以正常工作,因为我可以将输出写入本地服务器上的文件.
I am learning to use Azure functions. So, I might sound stupid. I am writing a timer trigger function which runs every 1 minute and adds two number and writes to a file. This works fine since I can write the output to the file on the local server.
第二步,我想将输出写入Blob.下面是代码:
As a second step, I wanted to write the output to the blob. Below is the code:
import datetime
import logging
import azure.functions as func
a=4
b=5
sum=a+b
file_name= open("sum.txt","w+")
def main(mytimer: func.TimerRequest, outputBlob: func.Out[str]) -> None:
utc_timestamp = datetime.datetime.utcnow().replace(
tzinfo=datetime.timezone.utc).isoformat()
if mytimer.past_due:
global sum
global file_name
print("sum:", sum)
logging.info('The sum has been calculated!')
logging.info(sum)
logging.info('Python timer trigger function ran at %s', utc_timestamp)
with open("sum.txt", "a") as file_name:
file_name.seek(0)
file_name.write("\n")
file_name.write("Sum: %s" % sum)
outputBlob.set(file_name)
但是,当我运行该函数时,出现以下错误:
However, when I run the function I get the below error:
[10/02/2020 14:06:00] Executed 'Functions.CalcPayment' (Failed, Id=547f7a3d-03b4-4a02-98e7-f4bfb73e6f5e)
[10/02/2020 14:06:00] System.Private.CoreLib: Exception while executing function: Functions.CalcPayment. System.Private.CoreLib: Result: Failure
[10/02/2020 14:06:00] Exception: TypeError: unable to encode outgoing TypedData: unsupported type "<class 'azure_functions_worker.bindings.generic.GenericBinding'>" for Python type "int"
[10/02/2020 14:06:00] Stack: File "/usr/local/Cellar/azure-functions-core-tools@3/3.0.2106/workers/python/3.7/OSX/X64/azure_functions_worker/dispatcher.py", line 330, in _handle__invocation_request
[10/02/2020 14:06:00] pytype=out_type_info.pytype)
[10/02/2020 14:06:00] File "/usr/local/Cellar/azure-functions-core-tools@3/3.0.2106/workers/python/3.7/OSX/X64/azure_functions_worker/bindings/meta.py", line 83, in to_outgoing_proto
[10/02/2020 14:06:00] f'unable to encode outgoing TypedData: '
[10/02/2020 14:06:00] .
推荐答案
您不需要写入文件,只需创建一个对您而言有意义的字符串并将其推送到输出变量即可.您可以使用此示例作为起点.
you dont need to have a file to write to, just create a string that makes sense in your case and push it to the output variable. You can use this sample as a starting point.
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