我有一个很深的json。有时，我需要查找包含某个单词的键的 json 路径。
{
"apiVersion": "v1",
"kind": "Pod",
"metadata": {
"creationTimestamp": "2019-03-28T21:09:42Z",
"labels": {
"bu": "finance",
"env": "prod"
},
"name": "auth",
"namespace": "default",
"resourceVersion": "2786",
"selfLink": "/api/v1/namespaces/default/pods/auth",
"uid": "ce73565a-519d-11e9-bcb7-0242ac110009"
},
"spec": {
"containers": [
{
"command": [
"sleep",
"4800"
],
"image": "busybox",
"imagePullPolicy": "Always",
"name": "busybox",
"resources": {},
"terminationMessagePath": "/dev/termination-log",
"terminationMessagePolicy": "File",
"volumeMounts": [
{
"mountPath": "/var/run/secrets/kubernetes.io/serviceaccount",
"name": "default-token-dbpcm",
"readOnly": true
}
]
}
],
"dnsPolicy": "ClusterFirst",
"nodeName": "node01",
"priority": 0,
"restartPolicy": "Always",
"schedulerName": "default-scheduler",
"securityContext": {},
"serviceAccount": "default",
"serviceAccountName": "default",
"terminationGracePeriodSeconds": 30,
"tolerations": [
{
"effect": "NoExecute",
"key": "node.kubernetes.io/not-ready",
"operator": "Exists",
"tolerationSeconds": 300
},
{
"effect": "NoExecute",
"key": "node.kubernetes.io/unreachable",
"operator": "Exists",
"tolerationSeconds": 300
}
],
"volumes": [
{
"name": "default-token-dbpcm",
"secret": {
"defaultMode": 420,
"secretName": "default-token-dbpcm"
}
}
]
},
"status": {
"conditions": [
{
"lastProbeTime": null,
"lastTransitionTime": "2019-03-28T21:09:42Z",
"status": "True",
"type": "Initialized"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2019-03-28T21:09:50Z",
"status": "True",
"type": "Ready"
},
{
"lastProbeTime": null,
"lastTransitionTime": null,
"status": "True",
"type": "ContainersReady"
},
{
"lastProbeTime": null,
"lastTransitionTime": "2019-03-28T21:09:42Z",
"status": "True",
"type": "PodScheduled"
}
],
"containerStatuses": [
{
"containerID": "docker://b5be8275555ad70939401d658bb4e504b52215b70618ad43c2d0d02c35e1ae27",
"image": "busybox:latest",
"imageID": "docker-pullable://busybox@sha256:061ca9704a714ee3e8b80523ec720c64f6209ad3f97c0ff7cb9ec7d19f15149f",
"lastState": {},
"name": "busybox",
"ready": true,
"restartCount": 0,
"state": {
"running": {
"startedAt": "2019-03-28T21:09:49Z"
}
}
}
],
"hostIP": "172.17.0.37",
"phase": "Running",
"podIP": "10.32.0.4",
"qosClass": "BestEffort",
"startTime": "2019-03-28T21:09:42Z"
}
}
目前，如果我需要 podIP，那么我会通过这种方式找到具有搜索关键字的对象，然后构建路径
curl myson | jq "[paths]" | grep "IP" --context=10
有什么好的捷径可以简化这个过程吗？我真正需要的是 - 所有可能具有匹配 key 的路径。
spec.podIP
spec.hostIP
最佳答案
选择 路径在最后一个元素中包含关键字，并使用join(".")生成您想要的输出。
paths
| select(.[-1] | type == "string" and contains("keyword"))
| join(".")
.[-1]返回数组的最后一个元素，type == "string"是必需的，因为数组索引是数字，并且无法检查数字和字符串是否包含它们。
您可能需要指定-r选项。
正如 @JeffMercado 隐式建议的那样，您可以从命令行设置查询，而无需触摸脚本:
jq -r 'paths
| select(.[-1] | type == "string" and contains($q))
| join(".")' file.json --arg q 'keyword'
关于json - 使用一些关键字从 JQ 构建 json 路径，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/55406838/