For an input below:
[{
"commit": {
"author": {
"name": "Stephen Dolan",
"email": "mu#netsoc.tcd.ie",
"date": "2013-06-22T16:30:59Z"
},
"committer": {
"name": "Stephen Dolan",
"email": "mu#netsoc.tcd.ie",
"date": "2013-06-22T16:30:59Z"
},
"message": "Merge pull request #162 from stedolan/utf8-fixes\n\nUtf8 fixes. Closes #161"
"url":"https://api.github.com/repos/stedolan/jq/commits/d25341478381063d1c76e81b3a52e0592a7c997f"
},
{
...
}
}]
How can JQ generate a delimited string from different objects as shown below?
"Stephen Dolan", "https://api.github.com/repos/stedolan/jq/commits/d25341478381063d1c76e81b3a52e0592a7c997f", "2013-06-22T16:30:59Z"
Collect the fields you want in an array and use #csv to convert to a CSV row. Make sure you get the raw output.
jq -r '.[] | [ .commit.author.name, .commit.url, .commit.author.date ] | #csv' input.json
Related
I'm struggling evaluating a command inside a jq pipeline. Example will make it easier. Let's imagine I've got this simple json
{
"model": [{
"id": "an-id",
"path": [
"mypath1.txt"
],
"model": "foo"
},
{
"id": "an-id2",
"path": [
"mypath1.txt"
],
"model": "foo2"
}
]
}
And I want to convert into this
{
"model": [{
"id": "an-id",
"path": [
"mypath1.txt"
],
"model": "foo",
"alternative_model": "I am a computed value out of <foo>"
},
{
"id": "an-id2",
"path": [
"mypath1.txt"
],
"model": "foo2",
"alternative_model": "I am a computed value out of <foo2>"
}
]
}
I want to do something like this that allows me to delegate computing alternative model to a different bash script.
myNewJson=$(cat mappings.json | jq '[.model[]| {
id: .id,
path: .path
model: .model
alternative_model: //TODO}' ---> here I'd like to do something like "eval ./myscript $model"
])
Thanks!
Let's assume myscript contains following line :
echo "I am a computed value out of <$1>"
As jq does not allow to evaluate shell commands, you need something like :
#!/usr/bin/env bash
input=mappings.json
alternative-models(){
local result='{}' sres
for id in $(jq -r '.model[].id' $input); do
model="$(jq -r --arg id "$id" '.model[]|select(.id==$id).model' $input)"
amodel="$(./myscript $model)"
result="$(jq --arg id $id --arg amodel "$amodel" '. + { $id: $amodel }' <<< "$result")"
done
echo "$result"
}
jq --argjson amodels "$(alternative-models)" '.model|map({
id, path, model, "alternative_model": $amodels[.id] }
)' $input
Your mappings.json is not valid json because of a comma on the model line.
have a very large JSON data like below
{
"10.10.10.1": {
"asset_id": 1,
"referencekey": "ASSET-00001",
"hostname": "testDev01",
"fqdn": "ip-10-10.10.1.ap-northeast-2.compute.internal",
"network_zone": [
"DEV",
"Dev"
],
"service": {
"name": "TEST_SVC",
"account": "AWS_TEST",
"billing": "Testpay"
},
"aws": {
"tags": {
"Name": "testDev01",
"Service": "TEST_SVC",
"Usecase": "Dev",
"billing": "Testpay",
"OsVersion": "20.04"
},
"instance_type": "t3.micro",
"ami_imageid": "ami-e000001",
"state": "running"
}
},
"10.10.10.2": {
"asset_id": 3,
"referencekey": "ASSET-47728",
"hostname": "Infra_Live01",
"fqdn": "ip-10-10-10-2.ap-northeast-2.compute.internal",
"network_zone": [
"PROD",
"Live"
],
"service": {
"name": "Infra",
"account": "AWS_TEST",
"billing": "infra"
},
"aws": {
"tags": {
"Name": "Infra_Live01",
"Service": "Infra",
"Usecase": "Live",
"billing": "infra",
"OsVersion": "16.04"
},
"instance_type": "r5.large",
"ami_imageid": "ami-e592398b",
"state": "running"
}
}
}
Can I use JQ to make the conversion like below?
Or is there an easier way to solve it?
Thank you
Expected result
_key,asset_id,referencekey,hostname,fqdn,network_zone/0,network_zone/1,service/name,service/account,service/billing,aws/tags/Name,aws/tags/Service,aws/tags/Usecase,aws/tags/billing,aws/tags/OsVersion,aws/instance_type,aws/ami_imageid,aws/state
10.10.10.1,1,ASSET-00001,testDev01,ip-10-10.10.1.ap-northeast-2.compute.internal,DEV,Dev,TEST_SVC,AWS_TEST,Testpay,testDev01,TEST_SVC,Dev,Testpay,20.04,t3.micro,ami-e000001,running
10.10.10.2,3,ASSET-47728,Infra_Live01,ip-10-10-10-2.ap-northeast-2.compute.internal,PROD,Live,Infra,AWS_TEST,infra,Infra_Live01,Infra,Live,infra,16.04,r5.large,ami-e592398b,running
jq let's you do the conversion to CSV easily. The following code produces the desired output:
jq -r 'to_entries
| map([.key,
.value.asset_id, .value.referencekey, .value.hostname, .value.fqdn,
.value.network_zone[0], .value.network_zone[1],
.value.service.name, .value.service.account, .value.service.billing,
.value.aws.tags.Name, .value.aws.tags.Service, .value.aws.tags.Usecase, .value.aws.tags.billing, .value.aws.tags.OsVersion,
.value.aws.instance_type, .value.aws.ami_imageid, .value.aws.state])
| ["_key","asset_id","referencekey","hostname","fqdn","network_zone/0","network_zone/1","service/name","service/account","service/billing","aws/tags/Name","aws/tags/Service","aws/tags/Usecase","aws/tags/billing","aws/tags/OsVersion","aws/instance_type","aws/ami_imageid","aws/state"]
, .[]
| #csv' "$INPUT"
Remarks
If some nodes in the input JSON are missing, the code does not break but fills in empty values in the CSV file.
If more than two network zones are given, only the first two are covered in the CSV file
I have a json file named as param.json that looks as below:
[
{
"Value": "anshuman.ceg+Dev#gmail.com",
"Key": "AccountEmail"
},
{
"Value": "DevABC",
"Key": "AccountName"
},
{
"Value": "Security (ou-nzx5-8ajd1561)",
"Key": "ManagedOrganizationalUnit"
},
{
"Value": "anshuman.ceg+Dev#gmail.com",
"Key": "SSOUserEmail"
},
{
"Value": "John",
"Key": "SSOUserFirstName"
},
{
"Value": "Smith",
"Key": "SSOUserLastName"
}
]
I want to get only the Value for DevABC so that I can use while reading the -r line. I need only DevABC
I am using jq as follows which doesn't seem to work
jq -r .[1].Value param.json
Assuming all your Key values are distinct, you can first convert the array into an object and then access the "AccountName" property directly:
jq -r 'from_entries | .AccountName' param.json
from_entries will generate the following object, which allows you to easily access the value for a given key:
{
"AccountEmail": "anshuman.ceg+Dev#gmail.com",
"AccountName": "DevABC",
"ManagedOrganizationalUnit": "Security (ou-nzx5-8ajd1561)",
"SSOUserEmail": "anshuman.ceg+Dev#gmail.com",
"SSOUserFirstName": "John",
"SSOUserLastName": "Smith"
}
If the object keys in the input happen not to be "Key" and "Value" and you can't use from_entries, select would be a good approach:
jq --arg k 'AccountName' -r '.[] | select(.Key == $k).Value'
Here my document:
[
{
"id": "9f0e27fe-3b8f-4857-8e1d-e57e7a3f4c31",
"identifier": [
{
"system": {
"value": "urn:oid:1.3.6.1.4.1.19126.3"
},
"value": {
"value": "Y3454867M"
}
},
{
"system": {
"value": "urn:oid:2.16.724.4.9.10.2"
},
"value": {
"value": "108505134"
}
}
]
}
]
I need to pick only .identifier[where .system.value == "urn:oid:1.3.6.1.4.1.19126.3"] and project .identifier.value.value.
Desired output:
[
{
"id": "9f0e27fe-3b8f-4857-8e1d-e57e7a3f4c31",
"identifier": "Y3454867M"
}
]
I've been playing with map and select but I don't quite figure out what's the right way to get it.
Any ideas?
This approach uses first to get the first result, in case there is more than one array item matching the criteria.
jq --arg v "urn:oid:1.3.6.1.4.1.19126.3" '
map(.identifier |= first(.[] | select(.system.value == $v).value.value))
'
[
{
"id": "9f0e27fe-3b8f-4857-8e1d-e57e7a3f4c31",
"identifier": "Y3454867M"
}
]
Demo
Right on the money with the good ol' select tool, since you need data from an arbitrary index. I fumbled a bit before I unwrapped the inner array that gets piped to my select.
jq -r '.[] | [{id: .id, identifier: .identifier | .[] | select(.system.value | contains("urn:oid:1.3.6.1.4.1.19126.3")) | .value.value }]'
Still new to jq myself, so any feedback is welcome.
I am trying to extract kubeconfig data with jq.
kubectl config view --raw -o json | jq ...
There is a json produced of this kind:
{
"kind": "Config",
"apiVersion": "v1",
"preferences": {},
"clusters": [
{
"name": "some-name",
"cluster": {
"server": "https://some-url",
"certificate-authority-data": "some-cert"
}
},
{
"name": "another-name",
"cluster": {
"server": "https://another-url",
"certificate-authority-data": "another-cert"
}
}
],
"users": [
{
"name": "some-name",
"user": {
"username": "some-user",
"password": "some-password"
}
},
{
"name": "another-name",
"user": {
"username": "another-user",
"password": "another-password"
}
}
],
"contexts": [],
"current-context": "some-context"
}
Question #1:
For a given name ,"some-name", I'd like to extract json:
{
url: "https://some-url",
cert: "some-cert",
username: "some-user",
password: "some-password"
}
Question #2:
"users" sub-section can have other format
"users": [
{
"name": "...",
"user": {
"exec": {
...
}
Where .user.username or .user.password or both can be missing
In this case overall query should return "{}", even though, "clusters" query/branch has result
Question 3, as a follow up to Jeff Mercado answer:
I want to get all clusters, joined (grouped by) name:
Looking at the manual, https://stedolan.github.io/jq/manual/#Builtinoperatorsandfunctions ,
section "Multiplication, division, modulo: *, /, and %", example:
jq '{"k": {"a": 1, "b": 2}} * {"k": {"a": 0,"c": 3}}' => {"k": {"a": 0, "b": 2, "c": 3}}'
gives presumably right result, assuming "k" is value of "name". So, grouping by "k", merging (*) the results.
I produced following query:
echo "${json}" | jq -r '(.clusters[] | {(.name): {url: .cluster.server, cert: .cluster["certificate-authority-data"]}}) * (.users[] | {(.name): {user: .user.username, password: .user.password}})'
First part returns {"name": {url: cert}}, second part is {"name": {username, password}}
However, result is not merge as in jq Manual, but something else ... product ?
{
"some-name": {
"url": "https://some-url",
"cert": "some-cert",
"user": "some-user",
"password": "some-password"
}
}
{
"another-name": {
"url": "https://another-url",
"cert": "another-cert"
},
"some-name": {
"user": "some-user",
"password": "some-password"
}
}
{
"some-name": {
"url": "https://some-url",
"cert": "some-cert"
},
"another-name": {
"user": "another-user",
"password": "another-password"
}
}
{
"another-name": {
"url": "https://another-url",
"cert": "another-cert",
"user": "another-user",
"password": "another-password"
}
}
Why/what is it ? Kind of following idea of the product ('*') but not of the jq tutorial as I (most likely, incorrectly) understand it
Experimentation:
I have 2 queries now producing partial result.
Let's grab original json (above) in and parse:
read -d '' json << EOF
...
EOF
queries:
echo "${json}" | jq -r '.clusters[] | select(.name=="some-name") | .cluster | {url: .server, cert: .["certificate-authority-data"]}' &&\
echo "${json}" | jq -r '.users[] | select(.name=="some-name") | .user | {user: .username, password: .password}'
Will produce the split output:
{
"url": "https://some-url",
"cert": "some-cert"
}
{
"user": "some-user",
"password": "some-password"
}
Or, with key added for further merge:
echo "${json}" | jq -r '.clusters[] | select(.name=="some-name") | {name: .name, url: .cluster.server, cert: .cluster["certificate-authority-data"]}' &&\
echo "${json}" | jq -r '.users[] | select(.name=="some-name") | {name: .name, user: .user.username, password: .user.password}'
Will produce:
{
"name": "some-name",
"url": "https://some-url",
"cert": "some-cert"
}
{
"name": "some-name",
"user": "some-user",
"password": "some-password"
}
"name" is not needed but can be used as a join operation
So you already know how to get the cluster and user by name separately, first step is to select them both within a single filter:
(.clusters[] | select(.name == $name).cluster), (.users[] | select(.name == $name).user)
This will yield two separate objects, the cluster, then the user. But we want to merge them. There's plenty of ways to do this. You could add them (+) directly or merge them (*) but no real difference there. You'll just want to remap the properties to the names you wanted where needed.
(.clusters[] | select(.name == $name).cluster | {url: .server, cert: ."certificate-authority-data"})
+
(.users[] | select(.name == $name).user | {username, password})
Pass the name in as a parameter to your filter;
$ kubectl config view --raw -o json | jq --arg name some-name '
(.clusters[] | select(.name == $name).cluster | {url: .server, cert: ."certificate-authority-data"})
+
(.users[] | select(.name == $name).user | {username, password})
'
For the second part of your question, if it turns out the mapped user is missing key properties and you want to omit them, just add another select filter to the end to test for those properties and replace with an empty object if nothing is found:
... | select(has("username") and has("password")) // {}
jqplay