Terraform部署AWS LexV2多版本机器人时遇验证错误求助

问题背景 #

为多个AWS LexV2机器人编写Terraform模块时，尝试创建正式版本而非仅保留Draft版本，但遇到以下验证错误：

ValidationException: 2 validation errors detected: Value at 'botVersionLocaleSpecification.en_GB.member.sourceBotVersion' failed to satisfy constraint: Member must have length less than or equal to 5; Value at 'botVersionLocaleSpecification.en_GB.member.sourceBotVersion' failed to satisfy constraint: Member must satisfy regular expression pattern: ^(DRAFT|[0-9]*[1-9][0-9]*)$

ValidationException: 2 validation errors detected: Value at 'botVersion' failed to satisfy constraint: Member must have length less than or equal to 5; Value at 'botVersion' failed to satisfy constraint: Member must satisfy regular expression pattern: ^DRAFT$

尝试使用数字1、字符串"1"作为版本号，错误依然存在。

错误原因分析 #

1. aws_lexv2models_bot_locale资源约束：
   该资源仅用于配置机器人的Draft版本区域设置，bot_version字段只能取值为"DRAFT"，不允许传入自定义版本号（如"Version_1"或"1"）。

2. aws_lexv2models_bot_version资源约束：
   正式版本必须从Draft版本发布，因此source_bot_version必须设置为"DRAFT"，而非自定义版本号。之前代码中传入自定义版本号违反了AWS的正则与长度限制。

修正后的核心模块代码 #

locals {
 #tern自由Soft               oc_locationS Basic复制（-.inc Events对
  draft_intents = var.bot_version_settings["DRAFT"].intents
}

# Lex Bot
resource "aws_lexv2models_bot" "this" {
  name        = var.bot_params.name
  description = var.bot_params.description
  data_privacy {
    child_directed = var.bot_params.child_directed
  }
  idle_session_ttl_in_seconds = var.bot_params.idle_session_ttl
  role_arn                    = var.bot_iam_role
}

# 仅为Draft版本配置Bot Locale
resource "aws_lexv2models_bot_locale" "draft" {
  bot_id                           = aws_lexv2models_bot.this.id
  bot_version                      = "DRAFT"
  locale_id                        = var.bot_version_settings["DRAFT"].locale.locale_id
  n_lu_intent_confidence_threshold = var.bot_version_settings["DRAFT"].locale.confidence_threshold

  voice_settings {
    voice_id = var.bot_version_settings["DRAFT"].locale.voice_settings.voice_id
    engine   = var.bot_version_settings["DRAFT"].locale.voice_settings.engine
  }

  # 配置Draft版本的意图
  dynamic "intent" {
    for_each = local.draft_intents
    content {
      intent_name = intent.value.name
      description = intent.value.description
      sample_utterances {
        utterance = intent.value.utterances
      }
      # 根据需求添加code_hook、closing_response等其他意图配置
    }
  }
}

# 发布多个正式版本，均基于当前Draft版本
resource "aws_lexv2models_bot_version" "this" {
  for_each = { for k, v in var.bot_version_settings : k => v if k != "DRAFT" }

  bot_id = aws_lexv2models_bot.this.id
  locale_specification = {
    var.bot_version_settings["DRAFT"].locale.locale_id = {
      source_bot_version = "DRAFT"
    }
  }

  description = each.value.description
}

variable "bot_version_settings" {
  description = "Lex机器人版本配置，必须包含一个DRAFT版本，可添加多个正式版本配置"
  type = map(object({
    locale = optional(object({
      locale_id            = optional(string, "en_GB")
      confidence_threshold = optional(number, 0.40)
      voice_settings = object({
        voice_id = optional(string, "Emma")
        engine   = optional(string, "neural")
      })
    }), {
      locale_id            = "en_GB"
      confidence_threshold = 0.40
      voice_settings = {
        voice_id = "Emma"
        engine   = "neural"
      }
    })

    intents = optional(list(object({
      name             = string
      description      = optional(string)
      utterances       = list(string)
      code_hook        = optional(bool, false)
      closing_response = optional(string)
      slot = optional(object({
        name        = string
        txt_message = optional(string)
        type        = string
        priority    = optional(number)
        slot_id     = optional(string)
      }))
    })), [])
    description = optional(string, "正式版本")
  }))

  # 强制校验必须包含DRAFT配置
  validation {
    condition     = contains(keys(var.bot_version_settings), "DRAFT")
    error_message = "bot_version_settings必须包含'DRAFT'版本配置"
  }
}

修正后的模块调用示例 #

module "riyad_test_lex" {
  count  = var.environment == "dev" ? 1 : 0
  source = "./modules/lex"

  bot_iam_role = aws_iam_role.lex.arn
  bot_params = {
    name             = "rFull	try|ann不受 Commercial更多项 ----------------------------------------------------------------ENDEA：松 NCnorS
    idle_session_ttl = 300
    child_directed   = false
  }
  bot_version_settings = {
    "DRAFT" = {
      locale = {
        voice_settings       = { voice_id = "Brian" }
        confidence_threshold = 0.95
      }
      intents = [
        {
          name       = "ConfirmYesIntent"
          utterances = ["1", "One", "Yes"]
        }
      ]
    },
    "v1" = {
      description = "第一个正式版本"
    },
    "v2" = {
      description = "第二个正式版本"
    }
  }
}

注意事项 #

如果需要创建多个不同配置的正式版本，由于LexV2的Draft是唯一的，每次发布新版本都会基于当前Draft状态。需分步操作：先配置Draft为目标版本内容，发布版本；再更新Draft为下一个版本内容，发布新版本。在Terraform中可通过条件判断或分步部署实现。

内容的提问来源于stack exchange，提问作者Riyad Ali