python - FunctionApp 未导入 python 模块

Question

我花了几天时间尝试使用 Terraform 部署函数应用。它使用 requests python 模块。

我已将问题范围缩小到 Azure 未在 requests.txt 中导入 python 模块。文件。

为了测试，我创建了一个简单的 httptrigger 函数应用程序，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，一切都按预期进行。

但是，如果更改我的 python 脚本 (__init__.py) 以导入 python 模块“urllib3”和/或“requests”， 即使简单的 python 脚本实际上没有使用模块中的任何方法或类，该函数也会失败。部署该功能时没有错误。从 url 调用时失败。

我验证了这些模块是否列在requirements.txt 文件中。

可以肯定的是，如果我注释掉导入请求和 urllib3，一切都会正常。

如有任何意见或建议，我们将不胜感激。

简单测试脚本(__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

经过一番努力，我找到了问题所在。感谢@HuryShen 和@AnkitKumar 为我指明了正确的方向。

我没有在函数 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(从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 脚本就可以正常工作了。