Summary

The flightRecorderSettings() GraphQL query returns the Java Flight Recorder settings for the specified virtual host, including whether old object sampling is enabled and the duration of each sampling run.

API Stability Short-Term

Syntax

graphql
flightRecorderSettings(
      vhost: Int!
   ): FlightRecorderSettings

Supply the virtual host number as vhost. The result is nullable — if no settings exist for the specified host, the query returns null. See Returned Values for the available fields.

Example

Raw
graphql
query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}
Mac OS or Linux (curl)
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql \
    -H "Authorization: Bearer $TOKEN" \
    -H "Content-Type: application/json" \
    -d @- << EOF
{"query" : "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}"
}
EOF
Mac OS or Linux (curl) One-line
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql \
    -H "Authorization: Bearer $TOKEN" \
    -H "Content-Type: application/json" \
    -d @- << EOF
{"query" : "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}"
}
EOF
Windows Cmd and curl
shell
curl -v -X POST $YOUR_LOGSCALE_URL/graphql ^
    -H "Authorization: Bearer $TOKEN" ^
    -H "Content-Type: application/json" ^
    -d @'{"query" : "query { ^
  flightRecorderSettings(vhost: 1) ^
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes} ^
}" ^
} '
Windows Powershell and curl
powershell
curl.exe -X POST 
    -H "Authorization: Bearer $TOKEN"
    -H "Content-Type: application/json"
    -d '{"query" : "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}"
}'
    "$YOUR_LOGSCALE_URL/graphql"
Perl
perl
#!/usr/bin/perl

use HTTP::Request;
use LWP;

my $TOKEN = "TOKEN";

my $uri = '$YOUR_LOGSCALE_URL/graphql';

my $query = "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}";
$query =~ s/\n/ /g;
my $json = sprintf('{"query" : "%s"}',$query);
my $req = HTTP::Request->new("POST", $uri );

$req->header("Authorization" => "Bearer $TOKEN");
$req->header("Content-Type" => "application/json");

$req->content( $json );

my $lwp = LWP::UserAgent->new;

my $result = $lwp->request( $req );

print $result->{"_content"},"\n";
Python
python
#! /usr/local/bin/python3

import requests

url = '$YOUR_LOGSCALE_URL/graphql'
mydata = r'''{"query" : "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}"
}'''

resp = requests.post(url,
                     data = mydata,
                     headers = {
   "Authorization" : "Bearer $TOKEN",
   "Content-Type" : "application/json"
}
)

print(resp.text)
Node.js
javascript
const https = require('https');

const data = JSON.stringify(
    {"query" : "query {
  flightRecorderSettings(vhost: 1)
  {oldObjectSampleEnabled, oldObjectSampleDurationMinutes}
}"
}
);


const options = {
  hostname: '$YOUR_LOGSCALE_URL',
  path: 'graphql',
  port: 443,
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'Content-Length': data.length,
    Authorization: 'BEARER ' + process.env.TOKEN,
    'User-Agent': 'Node',
  },
};

const req = https.request(options, (res) => {
  let data = '';
  console.log(`statusCode: ${res.statusCode}`);

  res.on('data', (d) => {
    data += d;
  });
  res.on('end', () => {
    console.log(JSON.parse(data).data);
  });
});

req.on('error', (error) => {
  console.error(error);
});

req.write(data);
req.end();
Example Responses
Success (HTTP Response Code 200 OK)
json
{
  "data": {
    "flightRecorderSettings": {
      "oldObjectSampleEnabled": false,
      "oldObjectSampleDurationMinutes": 3600000
    }
  }
}

Returned Values

The result contains oldObjectSampleEnabled (a non-nullable boolean; true if OldObjectSample is enabled) and oldObjectSampleDurationMinutes (a non-nullable Long giving the duration in minutes that old object sampling runs before dumping results and restarting). The available fields are listed here:

Table: FlightRecorderSettings Datatype

ParameterTypeRequiredDefaultStabilityAvailabilityDescription
Some input parameters may be required, as indicated in the Required column. For return values, this indicates that you are assured a value if the field is requested for the results. 
Table last updated: Oct 14, 2026 
oldObjectSampleDurationMinutesLongyes Short-Term The duration an old object sampling will run before dumping results and restarting.
oldObjectSampleEnabledBooleanyes Short-Term Whether an OldObjectSample is enabled.