AWS Terraform Lambda 预置并发

Question

我正在尝试配置并发性以与 API 网关支持的 Lambda 函数配合使用。

以下配置不起作用，AWS 似乎完全忽略预配置并发并且将冷启动。

resource "aws_lambda_function" "user_history" {
  publish          = true
  filename         = "../distribution/target/distribution/user-history.jar"
  function_name    = "user-history_${var.user}_${terraform.workspace}"
  role             = aws_iam_role.lambda.arn
  source_code_hash = filebase64sha256("../distribution/target/distribution/user-history.jar")
  runtime          = "java11"
  timeout          = 240
  memory_size      = 512
}

resource "aws_api_gateway_integration" "user_history" {
  rest_api_id             = aws_api_gateway_rest_api.vnm_api.id
  resource_id             = aws_api_gateway_resource.user_history.id
  http_method             = aws_api_gateway_method.user_history.http_method
  integration_http_method = "POST"
  type                    = "AWS_PROXY"
  uri                     = aws_lambda_function.user_history.invoke_arn
}

resource "aws_lambda_provisioned_concurrency_config" "user_history_provisioning" {
  function_name = aws_lambda_function.user_history.function_name
  provisioned_concurrent_executions = 2
  count = var.provisioning == true ? 1 : 0
  qualifier = aws_lambda_function.user_history.version
}

认为这可能与未指定的版本有关，我尝试按照此处接受的答案添加配置：Terraform - What is the URI to invoke lambda via alias?

resource "aws_lambda_alias" "user_history_alias"{
  name = "user_history_version"
  description = "Versioned alias"
  function_name = aws_lambda_function.user_history.arn
  function_version = aws_lambda_function.user_history.version
}

data "aws_lambda_function" "user_history" {
  function_name = aws_lambda_function.user_history.function_name
  qualifier = "user_history_version"
}

resource "aws_api_gateway_integration" "user_history" {
  uri = aws_lambda_function.user_history.user_history_version.invoke_arn
}

但现在我收到一个错误，指出This object has no argument, nested block, or exported attribute named "user_history_version"

有谁知道如何让我的预配置并发工作？

Answer 1

您走在正确的轨道上 - 如果您使用不合格的 lambda arn，您将引用 $LATEST 处的版本，而您的预配置并发将使用最新发布的版本。

您可以通过引用别名 ARN ( aws_lambda_alias. user_history_alias.arn) 来解决问题，或者，如果您不需要其他别名，则引用aws_lambda_function.user_history.qualified_arn，这将是最新发布的版本。