获取带有最新时间戳属性的JSON数组对象。

Question

我能够从List-action-executions的输出中得到满足一组过滤器的数组元素，这些元素是在 这个 问题 在返回的对象中，如何选择有最新值的对象作为 lastUpdateTime 属性

这是从链接问题的输出中获得的输入格式。

{
  "pipelineExecutionId": "",
  "actionExecutionId": "",
  "pipelineVersion": 2,
  "stageName": "DeployStage",
  "actionName": "PromoteToProdApprovalGate",
  "startTime": "2020-06-01T22:11:53-04:00",
  "lastUpdateTime": "2020-06-01T22:11:53-04:00",
  "status": "InProgress",
  "input": {
    "actionTypeId": {
      "category": "Approval",
      "owner": "AWS",
      "provider": "Manual",
      "version": "1"
    },
    "configuration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=#{SourceBuildVariables.BB_COMMIT_ID}",
      "ExternalEntityLink": "#{SourceBuildVariables.BB_URL}",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "resolvedConfiguration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=xxx1",
      "ExternalEntityLink": "http://",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "region": "us-east-1",
    "inputArtifacts": []
  },
  "output": {
    "outputArtifacts": [],
    "outputVariables": {}
  }
}
{
  "pipelineExecutionId": "",
  "actionExecutionId": "",
  "pipelineVersion": 1,
  "stageName": "DeployStage",
  "actionName": "PromoteToProdApprovalGate",
  "startTime": "2020-03-31T23:29:14.479000-04:00",
  "lastUpdateTime": "2020-04-03T19:04:51.646000-04:00",
  "status": "Succeeded",
  "input": {
    "actionTypeId": {
      "category": "Approval",
      "owner": "AWS",
      "provider": "Manual",
      "version": "1"
    },
    "configuration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=#{SourceBuildVariables.BB_COMMIT_ID}",
      "ExternalEntityLink": "#{SourceBuildVariables.BB_URL}",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "resolvedConfiguration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=xxx2",
      "ExternalEntityLink": "http://",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "region": "us-east-1",
    "inputArtifacts": []
  },
  "output": {
    "outputArtifacts": [],
    "executionResult": {
      "externalExecutionId": ",
      "externalExecutionSummary": "Approved by arn:aws:sts:"
    },
    "outputVariables": {}
  }
}
{
  "pipelineExecutionId": "",
  "actionExecutionId": "",
  "pipelineVersion": 1,
  "stageName": "DeployStage",
  "actionName": "PromoteToProdApprovalGate",
  "startTime": "2020-03-18T21:10:25.541000-04:00",
  "lastUpdateTime": "2020-03-25T21:10:25.965000-04:00",
  "status": "Failed",
  "input": {
    "actionTypeId": {
      "category": "Approval",
      "owner": "AWS",
      "provider": "Manual",
      "version": "1"
    },
    "configuration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=#{SourceBuildVariables.BB_COMMIT_ID}",
      "ExternalEntityLink": "#{SourceBuildVariables.BB_URL}",
      "NotificationArn": "arn:aws:sns:us-east-1"
    },
    "resolvedConfiguration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=xxx3",
      "ExternalEntityLink": "http://",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "region": "us-east-1",
    "inputArtifacts": []
  },
  "output": {
    "outputArtifacts": [],
    "executionResult": {
      "externalExecutionId": ""
    },
    "outputVariables": {}
  }
}
{
  "pipelineExecutionId": "",
  "actionExecutionId": "",
  "pipelineVersion": 1,
  "stageName": "DeployStage",
  "actionName": "PromoteToProdApprovalGate",
  "startTime": "2020-03-09T19:23:43.637000-04:00",
  "lastUpdateTime": "2020-03-10T14:48:30.069000-04:00",
  "status": "Failed",
  "input": {
    "actionTypeId": {
      "category": "Approval",
      "owner": "AWS",
      "provider": "Manual",
      "version": "1"
    },
    "configuration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=#{SourceBuildVariables.BB_COMMIT_ID}",
      "ExternalEntityLink": "#{SourceBuildVariables.BB_URL}",
      "NotificationArn": "arn:aws:sns:us-east-1"
    },
    "resolvedConfiguration": {
      "CustomData": "Deploy Service to Prod Approval Required for CommitID=xxx4",
      "ExternalEntityLink": "http://",
      "NotificationArn": "arn:aws:sns:us-east-1:"
    },
    "region": "us-east-1",
    "inputArtifacts": []
  },
  "output": {
    "outputArtifacts": [],
    "executionResult": {
      "externalExecutionId": "",
      "externalExecutionSummary": ""
    },
    "outputVariables": {}
  }
}

谢谢你

Answer 1

你可以使用 max_by 并提供一个路径表达式，使用它可以对对象数组进行排序。

.actionExecutionDetails
| max_by(.startTime)

这在功能上等同于通过字段进行排序，并获得数组中的最后一个元素。默认情况下 sort() 函数对这些值进行升序排序，并进行 不 提供一个参数来进行降序排序。

.actionExecutionDetails
| sort_by(.startTime)
| last