[英]replace arguements in a json using jq
{
"containers": [
{
"args": [
"water",
"fight",
"--homein",
"$(POD_NAMESPACE).svc.cluster.local",
"--proxyLogLevel=warning",
"--proxyComponentLogLevel=misc:error",
"--log_output_level=default:info",
"ms-madison",
"--trust-domain=cluster.local"
]}]
}
I am able to replace ms-madison with mr-harmison with an ugly solution .containers[0].args[8] |= "mr-harmison"'我可以用丑陋的解决方案 .containers[0].args[8] |= "mr-harmison"' 用 mr-harmison 替换 ms-madison
ms-madison can come at any position. ms-madison 可以出现在任何位置。 Can you suggest to me a better way to deal with this?
你能给我建议一个更好的方法来处理这个问题吗?
A prosaic but robust solution:一个平凡但强大的解决方案:
(.containers[0].args | index("ms-madison")) as $ix
| if $ix then .containers[0].args[$ix] = "mr-harmison" else . end
First, here's a solution which is completely agnostic about where "ms-madison" appears but which will change every occurrence of the target string:首先,这是一个解决方案,它与“ms-madison”出现的位置完全无关,但会改变目标字符串的每次出现:
walk(if . == "ms-madison" then "mr-harmison" else . end)
Second, if one only wanted to change at most one occurrence:其次,如果只想更改最多一次:
. as $in
| (first(paths | select(. as $p | $in | getpath($p) == "ms-madison")) // null) as $p
| if $p then setpath($p; "mr-harmison") else . end
Here's an illustration of how to "walk" .containers
to change all occurrences of the target string that occur as top-level elements of every array-valued "args" keys:这是如何“走”
.containers
以更改作为每个数组值“args”键的顶级元素出现的所有目标字符串的示例:
.containers |= walk( if type=="object"
and (.args|type)=="array"
then .args
|= map_values(
if . == "ms-madison"
then "mr-harmison"
else . end)
else . end)
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