Cannot convert undefined or null to object

[Bargey13]

I am getting this error when trying to use the plugin.

Started phase 0 (prometheus Ramp up json), duration: 60s @ 09:39:33(-0600) 2019-06-06
..  /usr/local/lib/node_modules/artillery-plugin-prometheus/node_modules/prom-client/lib/registry.js:35
		const defaultLabelNames = Object.keys(this._defaultLabels);
		                                 ^

TypeError: Cannot convert undefined or null to object
    at Function.keys (<anonymous>)
    at Registry.getMetricAsPrometheusString (/usr/local/lib/node_modules/artillery-plugin-prometheus/node_modules/prom-client/lib/registry.js:35:36)
    at Registry.metrics (/usr/local/lib/node_modules/artillery-plugin-prometheus/node_modules/prom-client/lib/registry.js:82:23)
    at Pushgateway.useGateway (/usr/local/lib/node_modules/artillery-plugin-prometheus/node_modules/prom-client/lib/pushgateway.js:78:27)
    at Pushgateway.pushAdd (/usr/local/lib/node_modules/artillery-plugin-prometheus/node_modules/prom-client/lib/pushgateway.js:23:14)
    at Object.pushToGateway (/usr/local/lib/node_modules/artillery-plugin-prometheus/lib/prometheus.js:156:24)
    at Object.reportResults (/usr/local/lib/node_modules/artillery-plugin-prometheus/lib/prometheus.js:137:9)
    at EventEmitter.<anonymous> (/usr/local/lib/node_modules/artillery-plugin-prometheus/lib/prometheus.js:178:10)
    at EventEmitter.emit (events.js:194:15)
    at Timeout.sendStats [as _onTimeout] (/usr/local/lib/node_modules/artillery/core/lib/runner.js:305:8)

[enudler]

Please provide some labels like in this example
I will fix that, btw try to check https://predator.dev it's based on artillery has this integration
{
"config": {
"plugins": {
"prometheus": {
"testName": "my_load_test_case",
"testRunId": "342-233-221",
"pushGatewayUrl": "http://localhost:9091",
"environment": "qa",
"labels": {
"performance-test"
"artillery.io"
}
}
}
}

[Bargey13]

Yes, it looks like I was missing the labels. This will test artillery's example.
{
"config": {
"target": "https://artillery.io",
"plugins": {
"prometheus": {
"testName": "my_load_test_case ",
"testRunId": "342-233-221",
"pushGatewayUrl": "http://localhost:9091",
"environment": "qa",
"labels": {
"performance-test": null,
"artillery.io": null
}
}
},
"phases": [
{
"duration": 60,
"arrivalRate": 20
}
],
"defaults": {
"headers": {
"x-my-service-auth": "987401838271002188298567"
}
}
},
"scenarios": [
{
"flow": [
{
"get": {
"url": "/docs"
}
}
]
}
]
}

[enudler]

So now it works?

…

On Fri, 7 Jun 2019 at 18:38 Bargey13 ***@***.***> wrote: Yes, it looks like I was missing the labels. This will test artillery's example. { "config": { "target": "https://artillery.io", "plugins": { "prometheus": { "testName": "my_load_test_case ", "testRunId": "342-233-221", "pushGatewayUrl": "http://localhost:9091", "environment": "qa", "labels": { "performance-test": null, "artillery.io": null } } }, "phases": [ { "duration": 60, "arrivalRate": 20 } ], "defaults": { "headers": { "x-my-service-auth": "987401838271002188298567" } } }, "scenarios": [ { "flow": [ { "get": { "url": "/docs" } } ] } ] } — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#2?email_source=notifications&email_token=ACXVP74LYRKU2ABQRMI6CSLPZJ6H7A5CNFSM4HVDUZMKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGODXGGIXI#issuecomment-499934301>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACXVP76TI4CQH7RTZHQFLYDPZJ6H7ANCNFSM4HVDUZMA> .

[AaronBarge]

Yes and no, you do need to add labels, but the labels can't have special charterers . or -