在jq中返回键/值对

Question

我有以下json输出（由ansible生成）和一个看似简单的任务，它通过jq提取了一些键/值对。 但是，我似乎无法获得所需的输出。

{
"custom_stats": {}, 
"plays": [
    {
        "play": {
            "id": "001dd8b7-1cca-07c6-2280-00000000043a", 
            "name": "Ansible Ad-Hoc"
        }, 
        "tasks": [
            {
                "hosts": {
                    "hostname01-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname02-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname03-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname04-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname05-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname06-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname07-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname01-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname02-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname03-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname04-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname05-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname01-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname02-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname03-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname04-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname05-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname06-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }, 
                    "hostname07-con": {
                        "_ansible_no_log": false, 
                        "_ansible_verbose_always": true, 
                        "action": "debug", 
                        "changed": false, 
                        "hw_system_serial": "<SERIALNUMBER>"
                    }
                }, 
                "task": {
                    "id": "001dd8b7-1cca-07c6-2280-00000000043c", 
                    "name": "debug"
                }
            }
        ]
    }
], 
"stats": {
    "hostname01-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname02-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname03-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname04-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname05-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname06-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname07-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname01-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname02-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname03-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname04-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname05-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname01-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname02-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname03-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname04-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname05-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname06-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }, 
    "hostname07-con": {
        "changed": 0, 
        "failures": 0, 
        "ok": 1, 
        "skipped": 0, 
        "unreachable": 0
    }
}

}

基本上，我只想将最里面的对象的键以及它的hw_system_serial值返回到同一行。 像这样：

hostname01-con: <SERIAL_NUMBER_1>
hostname02-con: <SERIAL_NUMBER_2>
etc

我觉得这应该是微不足道的（这次我可能写了一些ruby或python脚本...），但是尝试一下可能无法正确理解。 我已经尝试了各种各样的方法，但是最后要么遍历每个序列号的主机列表，要么返回两个单独的列表（一个主机和一个序列号）。

例如，这：

.plays[].tasks[].hosts | keys as $hosts | .[].hw_system_serial as $serial | $hosts | join(": ") + $serial

返回一行中每个主机名的列表，后跟一个序列号。

我认为 ，如果我可以将$serial转换$serial数组，则可以使用，但是我使用split()尝试也失败了（例如， $serial | split("\\r")返回单项数组而不是数组的列表）项）。

我在这里想念什么？ 我觉得jq对此应该很轻松（再次，任何带有JSON解析器的脚本语言...），但这是否不是正确的工具？

Answer 1

是的，这对于jq工具是可行的：

jq -r '.plays[].tasks[].hosts | to_entries[] | "\(.key +": "+ .value.hw_system_serial)"' input.json

输出：

hostname01-con: <SERIALNUMBER>
hostname02-con: <SERIALNUMBER>
hostname03-con: <SERIALNUMBER>
hostname04-con: <SERIALNUMBER>
hostname05-con: <SERIALNUMBER>
hostname06-con: <SERIALNUMBER>
hostname07-con: <SERIALNUMBER>