Question

我正在尝试使用aws API将VolumeId和卷的状态附加到计算机上。

代码

#!/usr/local/bin/ruby
require "aws-sdk"
require "rubygems"


list=Aws::EC2::Client.new(region: "us-east-1")
volume=list.describe_volumes()
volumes=%x( aws ec2 describe-volumes --region='us-east-1' )
puts volumes

下面是命令的示例输出 aws ec2 describe-volumes --region='us-east-1'。请帮助从下面获取VolumeID和状态

API（JSON）的示例输出：

{
"Volumes": [
    {
        "AvailabilityZone": "us-east-1d", 
        "Attachments": [
            {
                "AttachTime": "2015-02-02T07:31:36.000Z", 
                "InstanceId": "i-bca66353", 
                "VolumeId": "vol-892a2acd", 
                "State": "attached", 
                "DeleteOnTermination": true, 
                "Device": "/dev/sda1"
            }
        ], 
        "Encrypted": false, 
        "VolumeType": "gp2", 
        "VolumeId": "vol-892a2acd", 
        "State": "in-use", 
        "Iops": 100, 
        "SnapshotId": "snap-df910966", 
        "CreateTime": "2015-02-02T07:31:36.380Z", 
        "Size": 8
    }, 
 ]
}

Answer 1

仅获取volume_ids->

JSON.parse(volumes)['Volumes'].map{|v|v["VolumeId"]}

仅获取states->

JSON.parse(volumes)['Volumes'].map{|v|v["state"]}

用于获取以卷ID为键，其状态为值的哈希/映射->

JSON.parse(volumes)['Volumes'].map{|v| [v["VolumeId"],v["state"]] }.to_h

从Ruby中的JSON获取值

1 个答案: