I have a response from cURL which looks like this:
{"username": "bot", "verified": true, "locale": "en-US", "mfa_enabled": false, "bot": true, "id": "123", "flags": 0, "avatar": null, "discriminator": "3114", "email": null} 200
which is stored in variable called auth
Then I want to be able to loop that object doing this:
response=$(jq -c "." <<< "${auth::-3}")
Note that I remove the last 3 characters because those are the status code.
So technically it should work, but it returns: parse error: Invalid numeric literal at line 1, column 11
If I enter the raw JSON as a string, it works. But not like this. Why?
Consider:
response=$(jq -n --argjson auth "${auth% *}" '$auth')
...which will work correctly with versions of bash too old to correctly support ${auth::-3} (a 4.x-only feature), and which will also log enough details to track down any issue caused by the content passed to jq when run with bash -x yourscript.
Related
I have the following json format, basically it is a huge file with several of such entries.
[
{
"id": "kslhe6em",
"version": "R7.8.0.00_BNK",
"hostname": "abacus-ap-hf-test-001:8080",
"status": "RUNNING",
},
{
"id": "2bkaiupm",
"version": "R7.8.0.00_BNK",
"hostname": "abacus-ap-hotfix-001:8080",
"status": "RUNNING",
},
{
"id": "rz5savbi",
"version": "R7.8.0.00_BNK",
"hostname": "abacus-ap-hf-test-005:8080",
"status": "RUNNING",
},
]
I wanted to fetch all the hostname values that starts with "abacus-ap-hf-test" and without ":8080" into a variable and then wanted to use those values for further commands over a for loop something like below. But, am bit confused how can I extract such informaion.
HOSTAME="abacus-ap-hf-test-001 abacus-ap-hf-test-005"
for HOSTANAME in $HOSTNAME
do
sh ./trigger.sh
done
The first line command update to this:
HOSTAME=$(grep -oP 'hostname": "\K(abacus-ap-hf-test[\w\d-]+)' json.file)
or if you sure that the hostname end with :8080", try this:
HOSTAME=$(grep -oP '(?<="hostname": ")abacus-ap-hf-test[\w\d-]+(?=:8080")' json.file)
you will find that abacus-ap-hf-test[\w\d-]+ is the regex, and other strings are the head or the end of the regex content which for finding result accuracy.
Assuming you have valid JSON, you can get the hostname values using jq:
while read -r hname ; do printf "%s\n" "$hname" ; done < <(jq -r .[].hostname j.json)
Output:
abacus-ap-hf-test-001:8080
abacus-ap-hotfix-001:8080
abacus-ap-hf-test-005:8080
I realize this is a simple question but I haven't been able to find the answer. Thank you to anyone who may be able to help me understand what I am doing wrong.
Goal: Search and replace a string in a specific key in a JSON file with a string in a Bash variable using jq.
For example, in the following JSON file:
"name": "Welcome - https://docs.mysite.com/",
would become
"name": "Welcome",
Input (file.json)
[
{
"url": "https://docs.mysite.com",
"name": "Welcome - https://docs.mysite.com/",
"Ocurrences": "679"
},
{
"url": "https://docs.mysite.com",
"name": "Welcome",
"Ocurrences": "382"
}
]
Failing script (using variable)
siteUrl="docs.mysite.com"
jq --arg siteUrl "$siteUrl" '.[].name|= (gsub(" - https://$siteUrl/"; ""))' file.json > file1.json`
Desired output (file1.json)
[
{
"url": "https://docs.mysite.com",
"name": "Welcome",
"Ocurrences": "679"
},
{
"url": "https://docs.mysite.com",
"name": "Welcome",
"Ocurrences": "382"
}
]
I've tried various iterations on removing quotes, changing between ' and ", and adding and removing backslashes.
Successful script (not using variable)
jq '.[].name|= (gsub(" - https://docs.mysite.com/"; ""))' file.json > file1.json
More specifically, if it matters, I am processing an export of a website's usage data from Azure App Insights. Unfortunately, the same page may be assigned different names. I sum the Ocurrences of the two objects with the newly identical url later. If it is better to fix this in App Insights I am grateful for that insight, although I know Bash better than Kusto queries. I am grateful for any help or direction.
Almost. Variables are not automatically expanded within a string. You must interpolate them explicitly with \(…):
jq --arg siteUrl 'docs.mysite.com' '.[].name |= (gsub(" - https://\($siteUrl)/"; ""))' file.json
Alternatively, detect a suffix match and extract the prefix by slicing:
jq --arg siteUrl 'docs.mysite.com' '" - https://\($siteUrl)/" as $suffix | (.[].name | select(endswith($suffix))) |= .[:$suffix|-length]' file.json
I have the following code in the command line script:
output_json=$(jq -n \
--argjson ID "${id}" \
--arg Title "${title}" \
--argjson like "\"${like}\"" \
'$ARGS.named')
I put the id, title and like variables into the jq. I get the following output:
[
{
"ID": 6,
"Title": "ABC",
"like": ""
},
{
"ID": 22,
"Title": "ABC",
"like": "Yes"
}
]
But, I am trying to get the output in the following format, i.e. with null:
[
{
"ID": 6,
"Title": "ABC",
"like": null
},
{
"ID": 22,
"Title": "ABC",
"like": "Yes"
}
]
I don't quite get it is it possible to do this in general, or is it a problem with my jq command?
And as far as I understood "like": "" is not the same as "like": null. I am also a little confused now, and do not really understand what is the correct choice to use.
By using --argjson you need to provide valid JSON-encoded argument, thus if you want to receive null the value needs to be literally null. Your solution, however, adds quotes around it, so it can never be evaluated to null. (Also, it will only be a valid JSON string if it follows the JSON encoding for special characters such as the quote characters itself).
If you want to have a JSON string in the regular case, and null in the case where it is empty, import the content of ${like} as string using --arg and without the extra quotes (just as you do with ${title}), then use some jq logic to turn the empty string into null. An if statement would do, for example:
like=
jq -n --arg like "${like}" '{like: (if $like == "" then null else $like end)}'
{
"like": null
}
I have a JSON file inside a variable.
echo $JSON
{"name": "jkslave1", "nodeDescription": "This is a test agent", "numExecutors": "1", "remoteFS": "/root", "labelString": "jenkins", "mode": "NORMAL", "": ["hudson.slaves.JNLPLauncher", "hudson.slaves.RetentionStrategy$Always"], "launcher": {"stapler-class": "hudson.slaves.JNLPLauncher", "$class": "hudson.slaves.JNLPLauncher", "workDirSettings": {"disabled": false, "workDirPath": "", "internalDir": "remoting", "failIfWorkDirIsMissing": false}, "tunnel": "", "vmargs": ""}, "retentionStrategy": {"stapler-class": "hudson.slaves.RetentionStrategy$Always", "$class": "hudson.slaves.RetentionStrategy$Always"}, "nodeProperties": {"stapler-class-bag": "true"}, "type": "hudson.slaves.DumbSlave", "Jenkins-Crumb": "6af50cfe57d4685d84cc470f311fa559"}
And I want to use the variable inside my curl command like this
curl -k -X POST "https://<JENKINS-URL>/computer/doCreateItem?name=jkslave1&type=hudson.slaves.DumbSlave" \
-H "Content-Type: application/x-www-form-urlencoded" \
-H "Jenkins-Crumb: ${CRUMB}" \
-d 'json=${JSON}'
But the above implementation gives me the ERROR
Caused: javax.servlet.ServletException: Failed to parse JSON:${JSON}
at org.kohsuke.stapler.RequestImpl.getSubmittedForm(RequestImpl.java:1022)
at hudson.model.ComputerSet.doDoCreateItem(ComputerSet.java:296)
I tried the following too
-d 'json="${JSON}"'
and also
-d 'json=\"${JSON}\"'
But it doesnt seem to work.
How can I send the JSON body to my curl command saved as a variable ?
It's simply
curl ... -d "json=$JSON"
variables don't work within single quotes.
Inside single quotes everything is preserved literally, without exception.
This is well explained here
Try double quotes how you used it in the line before
[
{
"id": "1636ea48-28b7-783a-48dd-5e041f10d9e6",
"name": "Test_Component1",
"desiredVersions": [],
"children": false
},
{
"id": "1636f939-136f-4609-ab93-238b1af193fe",
"name": "Test_Component2",
"desiredVersions": [],
"children": false
}
]
I am writing command in Execute Shell window in Jenkins. I have this json in a variable. I want to extract both Id values so further processing in next set of command can be done.
Using jq:
$ echo "$var" | jq '.[].id'
"1636ea48-28b7-783a-48dd-5e041f10d9e6"
"1636f939-136f-4609-ab93-238b1af193fe"
is it a string? If so, you can use a regexp expression to extract the ID´s values. Like:
(\"id\"\:\W)\"(.+)(\"\,)