I am trying to get key#value pairs of JSON file below using jq
{
"STUFF_RELATED1": "STUFF_RELATED1",
"STUFF_RELATED2": "STUFF_RELATED2",
"THINGS": {
"THING_2": {
"details": {
"stuff_branch": "user/dev"
},
"repository": "path/to/repo",
"branch": "master",
"revision": "dsfkes4s34jlis4jsj4lis4sli3"
},
"THING_1": {
"details": {
"stuff_branch": "master"
},
"repository": "path/to/repo",
"branch": "master",
"revision": "dsfkes4s34jlis4jsj4lis4sli3"
}
},
"STUFF": {
"revision": "4u324i324iy32g",
"branch": "master"
}
}
The key#value pair should look like this:
THING_1#dsfkes4s34jlis4jsj4lis4sli3
Currently I have tried this on my own:
jq -r ' .THINGS | keys[] as $k | "($k)#(.[$k].revision)" ' things.json
But it does not give the resul that I really want.:( Thanks in advance!
You need to escape ( :
jq -r ' .THINGS | keys[] as $k | "\($k)#\(.[$k].revision)" ' things.json
Related
I have the following json files:
File1:
[
{
"id": 1,
"name": "serviceName",
"owner": {
"id": 1,
"name": "Nicole"
}
}
]
and File2:
[
{
"id": 1,
"name": "Nicole",
"email": "nicole#email.com"
}
]
I would like to have them merged like this:
[
{
"id": 1,
"name": "serviceName",
"owner": {
"id": 1,
"name": "Nicole",
"email": "nicole#email.com"
}
}
]
I'm trying the approach from here and try to use the following:
jq --argfile new file2.json '
($new | INDEX(.ID)) as $dict
| .owner
|= (if $dict[.ID] then . + $dict[.ID] else . end)
' file1.json
But that just results in an error.
Can anyone maybe provide me with some tips?
Your approach fails because of the followings:
Field names are case-sensitive. Having {"id": 1}, use .id, not .ID.
Field names are strings. Having {"id": 1} and INDEX(.id) as $dict, use $dict[.id | tostring] or $dict[.id | #text] or $dict["\(.id)"] to convert the number 1 into the string "1" in the object index.
Your files contain arrays. While INDEX defaults to read .[] from file2.json, you need to do it for file1.json yourself.
jq --argfile new file2.json '
($new | INDEX(.id)) as $dict | .[].owner |= (
if $dict[.id | #text] then . + $dict[.id | #text] else . end
)
' file1.json
[
{
"id": 1,
"name": "serviceName",
"owner": {
"id": 1,
"name": "Nicole",
"email": "nicole#email.com"
}
}
]
As a suggestion, you could also employ JOIN to merge on a given key:
jq '
JOIN(
INDEX(input[]; .id); .[]; .id | #text; .[0].owner += .[1] | .[0]
)
' file1.json file2.json
[
{
"id": 1,
"name": "serviceName",
"owner": {
"id": 1,
"name": "Nicole",
"email": "nicole#email.com"
}
}
]
Demo
IF I have json that looks like
{
"items": [
{
"name": "issue1",
"spec": {
"config": {
"setting1": abc,
"setting2": {
"name": "xyz"
}
},
"files": {
"name": "cde",
"path": "/home"
},
"program": {
"name": "apache"
}
}
}
]
}
and I want to have iteration at .items[0].spec where the key config,files,program's contents can be shown.. something like
config:
{
"setting1": abc,
"setting2": {
"name": "xyz"
}
}
files:
{
"name": "cde",
"path": "/home"
}
program:
{
"name": "apache"
}
and there might be things more or less than config/files/programs for each items.
I know that I can get the list of keys by jq -r '.items[0].spec| to_entries[].key' but not sure about formating the output and getting the contents of .items[].spec.xxxxx like above.
I also got very close by jq -r '{test: .items[0].spec | with_entries(select(.value != null)) }' but I want to seperate each item per key
Also this got me even closer! but how do you get the json syntax of the object to display uncompressed?
jq -r '.items[].spec | keys[] as $k | "\($k):\n \(.[$k])"'
The "," operator is the magic ingredient you seem to be looking for:
.items[].spec | keys[] as $k | $k, .[$k]
I'm using JQ CLI to merge JSON from document to another. The issue I am facing is that I have select by the value of a property, rather than by a numeric array index
The first file contains a chunk of JSON jqtest.json:
{
"event": [
{
"listen": "test",
"script": {
"exec": [],
"type": "text/javascript"
}
}
]
}
The second file is where I want to merge the JSON into under "accounts" collection.json:
{
"item": [
{
"name": "accounts",
"item": [
{
"name": "Retrieves the collection of Account resources."
}
]
},
{
"name": "accounts mapped",
"item": [
{
"name": "Retrieves the collection of AccountMapped resources."
}
]
}
]
}
What i am trying to do is merge it under "accounts" and under "name": "Retrieves the collection of Account resources." I use the command:
jq -s '
.[0].event += .[1].item |
map(select(.name=="accounts")) |
.[].item
' jqtest.json collection.json
But when executed nothing is outputted. What am doing wrong with JQ or is there another tool i can use to accomplish this?
{
"item": [
{
"name": "accounts",
"item": [
{
"name": "Retrieves the collection of Account resources.",
"event": [
{
"listen": "test",
"script": {
"exec": [],
"type": "text/javascript"
}
}
]
},
{
"name": "accounts mapped",
"item": [
{
"name": "Retrieves the collection of AccountMapped resources."
}
]
}
]
}
]
}
To merge two objects, one can use obj1 + obj2. From this, it follows that obj1 += obj2 can be used to merge an object (obj2) into another existing object (obj1).
Maybe that's what you trying to use. If so, you were missing parens around the expression producing the object to merge into (causing the code to be misparsed), you have the operands to += backwards, you don't actually produce the correct objects on each side of += (or even objects at all), and you didn't narrow down your output (accidentally including jqtest in the output).
Fixed:
jq -s '
( .[1].item[] | select( .name == "accounts" ) | .item[] ) += .[0] | .[1]
' jqtest.json collection.json
Demo on jqplay
I find the following clearer (less mental overhead):
jq -s '
.[0] as $to_insert |
.[1] | ( .item[] | select( .name == "accounts" ) | .item[] ) += $to_insert
' jqtest.json collection.json
Demo
That said, I would avoid slurping in favour of --argfile.
jq --argfile to_insert jqtest.json '
( .item[] | select( .name == "accounts" ) | .item[] ) += $to_insert
' collection.json
Demo on jqplay
In case, I have an original json look like the following:
{
"taskDefinition": {
"containerDefinitions": [
{
"name": "web",
"image": "my-image",
"environment": [
{
"name": "DB_HOST",
"value": "localhost"
},
{
"name": "DB_USERNAME",
"value": "user"
}
]
}
]
}
}
And I would like to inplace modify the value for the matched key like so:
jq '.taskDefinition.containerDefinitions[0].environment[] | select(.name=="DB_USERNAME") | .value="new"' json
I got the output
{
"name": "DB_USERNAME",
"value": "new"
}
But I want more like in-place modify or the whole json from the original with new value modified, like this:
{
"taskDefinition": {
"containerDefinitions": [
{
"name": "web",
"image": "my-image",
"environment": [
{
"name": "DB_HOST",
"value": "localhost"
},
{
"name": "DB_USERNAME",
"value": "new"
}
]
}
]
}
}
Is it possible to do with jq or any known workaround?
Thank you.
Updated
For anyone looking for editing multi-values,
here is the approach I use
JQ=""
for e in DB_HOST=rds DB_USERNAME=xxx; do
k=${e%=*}
v=${e##*=}
JQ+="(.taskDefinition.containerDefinitions[0].environment[] | select(.name==\"$k\") | .value) |= \"$v\" | "
done
jq '${JQ%??}' json
I think there should be more concise way, but this seems working fine.
It is enough to assign to the path, if you are using |=, e.g.
jq '
(.taskDefinition.containerDefinitions[0].environment[] |
select(.name=="DB_USERNAME") | .value) |= "new"
' infile.json
Output:
{
"taskDefinition": {
"containerDefinitions": [
{
"name": "web",
"image": "my-image",
"environment": [
{
"name": "DB_HOST",
"value": "localhost"
},
{
"name": "DB_USERNAME",
"value": "new"
}
]
}
]
}
}
Here is a select-free solution using |=:
.taskDefinition.containerDefinitions[0].environment |=
map(if .name=="DB_USERNAME" then .value = "new"
else . end)
Avoiding select within the expression on the LHS of |= makes the solution more robust w.r.t. the version of jq being used.
You might like to consider this alternative to using |=:
walk( if type=="object" and .name=="DB_USERNAME"
then .value="new" else . end)
I'd like to know a quick way to insert a json to json.
$ cat source.json
{
"AWSEBDockerrunVersion": 2,
"containerDefinitions": [
{
"environment": [
{
"name": "SERVICE_MANIFEST",
"value": ""
},
{
"name": "SERVICE_PORT",
"value": "4321"
}
]
}
]
}
The SERVICE_MANIFEST is content of another json file
$ cat service_manifest.json
{
"connections": {
"port": "1234"
},
"name": "foo"
}
I try to make it with jq command
cat service_manifest.json |jq --arg SERVICE_MANIFEST - < source.json
But seems it doesn't work
Any ideas? The final result still should be a valid json file
{
"AWSEBDockerrunVersion": 2,
"containerDefinitions": [
{
"environment": [
{
"name": "SERVICE_MANIFEST",
"value": {
"connections": {
"port": "1234"
},
"name": "foo"
}
},
...
]
}
],
...
}
Updates.
Thanks, here is the command I run from your sample.
$ jq --slurpfile sm service_manifest.json '.containerDefinitions[].environment[] |= (select(.name=="SERVICE_MANIFEST").value=$sm)' source.json
But the result is an array, not list.
{
"AWSEBDockerrunVersion": 2,
"containerDefinitions": [
{
"environment": [
{
"name": "SERVICE_MANIFEST",
"value": [
{
"connections": {
"port": "1234"
},
"name": "foo"
}
]
},
{
"name": "SERVICE_PORT",
"value": "4321"
}
]
}
]
}
You can try this jq command:
jq --slurpfile sm SERVICE_MANIFEST '.containerDefinitions[].environment[] |= (select(.name=="SERVICE_MANIFEST").value=$sm[])' file
--slurpfile assigns the content of the file to the variable sm
The filter replaces the array .containerDefinitions[].environment[] with the content of the file only on the element having SERVICE_MANIFEST as name.
A simple solution would use --argfile and avoid select:
< source.json jq --argfile sm service_manifest.json '
.containerDefinitions[0].environment[0].value = $sm '
Or if you want only to update the object(s) with .name == "SERVICE_MANIFEST" you could use the filter:
.containerDefinitions[].environment
|= map(if .name == "SERVICE_MANIFEST"
then .value = $sm
else . end)
Variations
There is no need for any "--arg"-style parameter at all, as illustrated by the following:
jq -s '.[1] as $sm
| .[0] | .containerDefinitions[0].environment[0].value = $sm
' source.json service_manifest.json