FunctionApp 未导入 python 模块

Question

我花了几天时间尝试使用 Terraform 部署 function 应用程序。 它利用了请求 python 模块。

我已将问题缩小到 Azure 没有在 requirements.txt 中导入 python 模块。 文件。

为了测试，我创建了一个简单的 httptrigger function 应用程序，它只返回一个 url 参数。 我的部署脚本压缩目录并使用 terraform 部署应用程序。 一切都很好，一切都按预期工作。

But, if change my python script ( __init__.py ) to import the python modules “urllib3” and/or “requests,” The function fails, even though the simple python script doesn't actually use any methods or classes from the modules. 部署 function 时没有错误。 从 url 调用时失败。

我验证了这些模块在 requirements.txt 文件中列出。

可以肯定的是，如果我注释掉导入请求和 urllib3，一切正常。

任何意见或建议将不胜感激。

简单的测试脚本（ __init__.py ）：

import logging
import azure.functions as func
# function fails with the following line.  Works if commented out.
import urllib3



def main(req: func.HttpRequest) -> func.HttpResponse:
    logging.info('Python HTTP trigger function processed a request.')

    target = req.params.get('target')
    if target:
        return func.HttpResponse("Pretending to use " + target, status_code = 503)
    else:
        return func.HttpResponse("No Taget Specified", status_code = 400)

requirements.txt（7/15 更新）

azure-functions==1.2.1
future==0.18.2
pefile==2019.4.18
PyInstaller==3.6
pylint==2.5.3
pywin32-ctypes==0.2.0
PyYAML==5.3.1
urllib3==1.25.9
requests==2.24.1

7/16 更新：Terraform 文件：

variable "prefix" {
    type = "string"
    default = "jis"
}

variable "location" {
    type = "string"
    default = "eastus"
}

variable "environment" {
    type = "string"
    default = "dev"
}

variable "functionapp" {
    type = "string"
    default = "./testit.zip"
}

resource "random_string" "storage_name" {
    length = 24
    upper = false
    lower = true
    number = true
    special = false
}

provider "azurerm" {
  version = "~>2.1.0"
  features {}
}

# Create Storage Account

resource "azurerm_resource_group" "rg" {
    name = "${var.prefix}-${var.environment}"
    location = "${var.location}"
}

resource "azurerm_storage_account" "storage" {
    name = "${random_string.storage_name.result}"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    location = "${var.location}"
    account_tier = "Standard"
    account_replication_type = "LRS"
}

resource "azurerm_storage_container" "deployments" {
    name = "function-releases"
    storage_account_name = "${azurerm_storage_account.storage.name}"
    container_access_type = "private"
}

# upload zip file

resource "azurerm_storage_blob" "appcode" {
    name = "functionapp.zip"
    storage_account_name = "${azurerm_storage_account.storage.name}"
    storage_container_name = "${azurerm_storage_container.deployments.name}"
    type = "Block"
    source = "${var.functionapp}"
}

# Create function app

data "azurerm_storage_account_sas" "sas" {
    connection_string = "${azurerm_storage_account.storage.primary_connection_string}"
    https_only = true
    start = "2020-07-10"
    expiry = "2023-12-31"
    resource_types {
        object = true
        container = false
        service = false
    }
    services {
        blob = true
        queue = false
        table = false
        file = false
    }
    permissions {
        read = true
        write = false
        delete = false
        list = false
        add = false
        create = false
        update = false
        process = false
    }
}

resource "azurerm_app_service_plan" "asp" {
    name = "${var.prefix}-plan"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    location = "${var.location}"
    kind = "Linux"
    reserved = true
    sku {
        tier = "Dynamic"
        size = "Y1"
    }
}

resource "azurerm_function_app" "functions" {
    name = "${var.prefix}-${var.environment}"
    location = "${var.location}"
    resource_group_name = "${azurerm_resource_group.rg.name}"
    app_service_plan_id = "${azurerm_app_service_plan.asp.id}"
    storage_connection_string = "${azurerm_storage_account.storage.primary_connection_string}"
    version = "~2"

    app_settings = {
        https_only = true
        FUNCTIONS_WORKER_RUNTIME = "python"
        WEBSITE_NODE_DEFAULT_VERSION = "~10"
        FUNCTION_APP_EDIT_MODE = "readonly"
        HASH = "${base64encode(filesha256("${var.functionapp}"))}"
        WEBSITE_RUN_FROM_PACKAGE = "https://${azurerm_storage_account.storage.name}.blob.core.windows.net/${azurerm_storage_container.deployments.name}/${azurerm_storage_blob.appcode.name}${data.azurerm_storage_account_sas.sas.sas}"
    }
}

# 

Answer 1

可能是版本兼容性问题。

您使用的 urllib3 和 requests 的版本来自 2018 年 6 月，其他（未检查全部）似乎是最新版本。

为什么需要使用旧版本？

Answer 2

经过一番挣扎，我发现了问题所在。 感谢@HuryShen 和@AnkitKumar 为我指明了正确的方向。

我没有在 function zip 文件中包含模块 urllib3 和 requests。 它们需要安装到<funcname>.python_packages/lib/site-packages directory 。 最简单的方法（来自 requirements.txt 文件）是

pip install  --target="azure/.python_packages/lib/site-packages"  -r requirements.txt

下载模块后，它们可以包含在 zip 文件中。 之后，terraform 脚本工作正常。