Question

我需要获取亚马逊图像列表，并且需要显示的值之一是布尔值（真/假）。

例如，我可以毫无问题地从列表中提取图像ID：

cat oneimage.json | jq -r '.Images[] | [.ImageId] | @csv'
"ami-000bd263d51e443f2"

但是我需要添加到列表中的下一个值是一个true / false值，并且在下一个命令处出现jq扼流圈：

cat oneimage.json | jq -r '.Images[] | [.ImageId, ([.BlockDeviceMappings[].Ebs.DeleteOnTermination] | join(","))] | @csv'
jq: error (at <stdin>:89): string ("") and boolean (true) cannot be added

json包含卷列表。 “ DeleteOnTermination”值对于列表中的每个卷都是唯一的，并且必须以csv格式进入相同的“单元”。

目标是将csv输出到电子表格，并使所有DeleteOnTermination值在每个图像的单元格中的一行上用逗号分隔。

这是我用于此测试的json：

{
"Images": [{
    "VirtualizationType": "hvm",
    "Description": "AB-P-RIDD-TRAN05-12-13-2018",
    "Hypervisor": "xen",
    "ImageId": "ami-000bd263d51e443f2",
    "State": "available",
    "BlockDeviceMappings": [{
            "DeviceName": "/dev/sda1",
            "Ebs": {
                "SnapshotId": "snap-0f1076dce3103833f",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 100,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdi",
            "Ebs": {
                "SnapshotId": "snap-0c7d71a9d3887a048",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 5,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdg",
            "Ebs": {
                "SnapshotId": "snap-00402196b9e023a72",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 10,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdk",
            "Ebs": {
                "SnapshotId": "snap-05f65a62735de2846",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 20,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdj",
            "Ebs": {
                "SnapshotId": "snap-0d350170b9d5c62bb",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 40,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdh",
            "Ebs": {
                "SnapshotId": "snap-04679d09d89609e79",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 30,
                "Encrypted": false
            }
        },
        {
            "DeviceName": "/dev/sdf",
            "Ebs": {
                "SnapshotId": "snap-0b5f861fd93da6b20",
                "DeleteOnTermination": true,
                "VolumeType": "gp2",
                "VolumeSize": 5,
                "Encrypted": false
            }
        }
    ],
    "Architecture": "x86_64",
    "ImageLocation": "123456789191/AB-P-RIDD-TRAN05-12-13-2018",
    "RootDeviceType": "ebs",
    "OwnerId": "123456789191",
    "RootDeviceName": "/dev/sda1",
    "CreationDate": "2018-12-14T01:39:31.000Z",
    "Public": false,
    "ImageType": "machine",
    "Name": "AB-P-RIDD-TRAN05-12-13-2018"
}]

}

如何使DeleteOnTermination值显示在一个csv单元格中，并用逗号分隔，每个卷中有一个DeleteOnTermination值？

Answer 1

您需要使用tostring。

.bool_value | tostring

您的情况下的用法：

jq -r '.Images[] | [.ImageId, ( [.BlockDeviceMappings[].Ebs.DeleteOnTermination | tostring] | join(",") )] | @csv' file

产量：

"ami-000bd263d51e443f2","true,true,true,true,true,true,true"

Answer 2

这里是join的定义，可以与jq的所有现有版本（即jq 1.3及更高版本）一起使用，并提供jq 1.6的灵活语义（即，仅要求所有数组中的项目为标量）：

def join(c):
  if length==0 then ""
  else reduce .[1:][] as $x (.[0]|tostring; . + c + ($x|tostring))
  end;

为便于参考：

tostring在jq的所有现有版本中均可用；
jq 1.3没有join/1（但确实有@csv）。

使用jq将布尔值添加到csv数组

2 个答案: