策略生成：按策略验证

使用策略创作服务根据自然语言生成策略时，会在生成过程中对每个策略进行验证和分析。

工作原理

示例：生成并验证策略

检索生成结果分为两个步骤：首先检查生成状态，然后列出生成的资产以查看策略及其验证结果。

开始生成策略：

aws bedrock-agentcore-control start-policy-generation \
  --policy-engine-id MyEngine-abc123 \
  --name RefundPolicy \
  --content '{
    "rawText": "Allow customer service agents to process refunds up to 500 dollars for orders placed within the last 30 days"
  }' \
  --resource '{
    "arn": "arn:aws:bedrock-agentcore:us-east-1:123456789012:gateway/MyGateway-xyz789"
  }'

响应包括策略生成 ID 和状态：

{
  "policyGenerationId": "RefundPolicy-def456",
  "policyEngineId": "MyEngine-abc123",
  "status": "GENERATING"
}

使用get-policy-generation以下方法检查生成状态：

aws bedrock-agentcore-control get-policy-generation \
  --policy-engine-id MyEngine-abc123 \
  --policy-generation-id RefundPolicy-def456

响应显示了总体生成状态：

{
  "policyGenerationId": "RefundPolicy-def456",
  "status": "GENERATED",
  "statusReasons": []
}

状态变为后GENERATED，列出生成的资产以检索策略及其每个策略的验证结果：

aws bedrock-agentcore-control list-policy-generation-assets \
  --policy-engine-id MyEngine-abc123 \
  --policy-generation-id RefundPolicy-def456

响应包括每份生成的策略及其Cedar定义和验证结果：

{
  "policyGenerationAssets": [
    {
      "policyGenerationAssetId": "asset-1",
      "definition": {
        "cedar": {
          "statement": "permit(\n  principal is AgentCore::OAuthUser,\n  action == AgentCore::Action::\"RefundTool___process_refund\",\n  resource == AgentCore::Gateway::\"arn:aws:bedrock-agentcore:us-east-1:123456789012:gateway/MyGateway-xyz789\"\n) when {\n  context.input.amount <= 500\n};"
        }
      },
      "findings": [
        {
          "type": "VALID"
        }
      ],
      "rawTextFragment": "Allow customer service agents to process refunds up to 500 dollars"
    },
    {
      "policyGenerationAssetId": "asset-2",
      "definition": {
        "cedar": {
          "statement": "permit(\n  principal,\n  action == AgentCore::Action::\"RefundTool___view_order_history\",\n  resource\n);"
        }
      },
      "findings": [
        {
          "type": "ALLOW_ALL",
          "description": "Overly Permissive: Policy Engine will allow every request for the specified principal (AgentCore::OAuthUser), action (RefundTool___view_order_history) and resource (gateway/*) combination if the policy is added or updated"
        }
      ],
      "rawTextFragment": "Allow customer service agents to view order history"
    }
  ]
}

每项策略的验证结果

生成的每个保单资产都包含一个Finding对象findings数组，每个对象都有type和description。以下示例显示了不同的查找结果类型：

通过验证和分析的策略：

{
  "findings": [
    {
      "type": "VALID"
    }
  ]
}

被标记为过于宽松的政策：

{
  "findings": [
    {
      "type": "ALLOW_ALL",
      "description": "Overly Permissive: Policy Engine will allow every request for the specified principal (AgentCore::OAuthUser), action (RefundTool___view_order_history) and resource (gateway/*) combination if the policy is added or updated"
    }
  ]
}

无法从自然语言输入中生成的策略：

{
  "findings": [
    {
      "type": "NOT_TRANSLATABLE",
      "description": "Unsupported Condition Error: The request includes conditions that rely on data or attributes currently not supported."
    }
  ]
}

生成的策略的常见发现

下表描述了生成的策略可以返回的查找结果类型：