如何使用jq遍歷Nagios JSON

我想弄清楚如何解析下面的JSON，而不必明確指出多個命令中的數組索引。我只需要將主機組與所有主機信息關聯在一行上。如何使用jq遍歷Nagios JSON

{ 
    "data": { 
    "selectors": { 
    }, 
    "hostgroups": [ 
     { 
     "name": "ATL", 
     "hosts": [ 
      { 
      "name": "ATL-SERVER1", 
      "time_up": 2496629, 
      "time_down": 8970, 
      "time_unreachable": 0, 
      "scheduled_time_up": 0, 
      "scheduled_time_down": 0, 
      "scheduled_time_unreachable": 0, 
      "time_indeterminate_nodata": 0, 
      "time_indeterminate_notrunning": 0 
      }, 
      { 
      "name": "ATL-SERVER2", 
      "time_up": 2505525, 
      "time_down": 74, 
      "time_unreachable": 0, 
      "scheduled_time_up": 0, 
      "scheduled_time_down": 0, 
      "scheduled_time_unreachable": 0, 
      "time_indeterminate_nodata": 0, 
      "time_indeterminate_notrunning": 0 
      } 
     ] 
     }, 
     { 
     "name": "LAX", 
     "hosts": [ 
      { 
      "name": "LAX-SERVER1", 
      "time_up": 2505599, 
      "time_down": 0, 
      "time_unreachable": 0, 
      "scheduled_time_up": 0, 
      "scheduled_time_down": 0, 
      "scheduled_time_unreachable": 0, 
      "time_indeterminate_nodata": 0, 
      "time_indeterminate_notrunning": 0 
      }, 
      { 
      "name": "LAX-SERVER2", 
      "time_up": 2505599, 
      "time_down": 0, 
      "time_unreachable": 0, 
      "scheduled_time_up": 0, 
      "scheduled_time_down": 0, 
      "scheduled_time_unreachable": 0, 
      "time_indeterminate_nodata": 0, 
      "time_indeterminate_notrunning": 0 
      } 
     ] 
     } 
    ] 
    } 
}

以下命令將得到我我需要什麼：

.data.hostgroups[0].name as $Group | {$Group} + .data.hostgroups[0].hosts[] | [.Group, .name, .time_up, .time_down, .time_unreachable, .scheduled_time_up, .scheduled_time_down, .scheduled_time_unreachable, .time_indeterminate_nodata, .time_indeterminate_notrunning] | @csv 
.data.hostgroups[1].name as $Group | {$Group} + .data.hostgroups[1].hosts[] | [.Group, .name, .time_up, .time_down, .time_unreachable, .scheduled_time_up, .scheduled_time_down, .scheduled_time_unreachable, .time_indeterminate_nodata, .time_indeterminate_notrunning] | @csv

但我一直在試圖找出如何在一行中做到這一點。我有20個主機組，所以這是我的腳本中的20個命令。

我發現的所有可比較的例子似乎只適用於從數組中拉出單個字段（在我的例子中它是主機[]）。例如，這將很好地工作：

map(.data.hostgroups | map({Group: .name, Host: .hosts[].name} | [.Group, .Host])) | add[] | @csv

，輸出是：

"ATL","ATL-SERVER1" 
"ATL","ATL-SERVER2" 
"LAX","LAX-SERVER1" 
"LAX","LAX-SERVER2"

但是當我在添加其他字段，例如：

map(.data.hostgroups | map({Group: .name, Host: .hosts[].name, Uptime: .hosts[].time_up} | [.Group, .Host, .Uptime])) | add[] | @csv

的輸出是：

"ATL","ATL-SERVER1",2496629 
"ATL","ATL-SERVER1",2505525 
"ATL","ATL-SERVER2",2496629 
"ATL","ATL-SERVER2",2505525 
"LAX","LAX-SERVER1",2505599 
"LAX","LAX-SERVER1",2505599 
"LAX","LAX-SERVER2",2505599 
"LAX","LAX-SERVER2",2505599

對於每個字段I a dd，它基本上將它們相乘。我很確定我明白這是爲什麼，但我仍然試圖弄清楚如何排除這種情況，同時避免將結果以指數方式組合的問題。

任何人都可以幫我嗎？

謝謝！

來源

2016-03-02 Brook Warren

$ cat extract.jq 
.data.hostgroups[] 
| .name as $Group 
| .hosts[] 
| [$Group, .name, .time_up, .time_down, .time_unreachable, 
    .scheduled_time_up, .scheduled_time_down, 
    .scheduled_time_unreachable, .time_indeterminate_nodata, 
    .time_indeterminate_notrunning] 
| @csv 


$ jq -r -f extract.jq in.json 
"ATL","ATL-SERVER1",2496629,8970,0,0,0,0,0,0 
"ATL","ATL-SERVER2",2505525,74,0,0,0,0,0,0 
"LAX","LAX-SERVER1",2505599,0,0,0,0,0,0,0 
"LAX","LAX-SERVER2",2505599,0,0,0,0,0,0,0

來源

2016-03-02 23:09:56 peak

非常感謝。它對我有效，我明白爲什麼現在這是必要的。我明白了| .host []正常運行，我明白現在循環是如何工作的。非常感謝！ –

如何使用jq遍歷Nagios JSON

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