API V2 Tags filter

[pierre-yves_tai]

Hello,

I want to extract metrics with a python script and Dynatrace API V2.

import requests
import json
from pathlib import Path

#fichier de parametrage
file=Path("logs/dump.json")

API_TOKEN = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"

# données authentification
headers = {'content-type': 'application/json',
'Authorization' : 'Api-Token ' + API_TOKEN}

#param
payload = {
"metricSelector": "builtin:service.response.time:names",
"entitySelector": "type(SERVICE)",
"tags": [
{
"context": "CONTEXTLESS",
"key": "Environnement",
"value": "Production",
"stringRepresentation": "Environnement:Production"
},
{
"context": "CONTEXTLESS",
"key": "Projet OpenShift",
"value": "ged"
},
{
"context": "CONTEXTLESS",
"key": "Service Name",
"value": "svc-document"
}
]
}

r = requests.get('https://xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/api/v2/metrics/query', verify=False, headers=headers, params=payload)

print("CODE RETOUR: ", r.status_code)

with open(file,'w', encoding="utf8") as outputjson_file:
outputjson_file.write(json.dumps(r.json(), indent=4))
outputjson_file.close()

I've got a HTTP 200 code for result, but i take back all the metrics.

It seem that the tags filter doesn't work.

How i sould use tags for only get the metric for service name svc-document

[pahofmann · Accepted solution]

The tag filter is part of the entity selector, you should include it there, e.g.:

type(SERVICE),tag("[context]key1:value-1","key2:value-2","key3")

So in your case: 

type(SERVICE),tag("Environnement:Production","Projet OpenShift:ged","Service Name:svc-document")

You can find it in the docs here: api-entities-v2-selector 

[pierre-yves_tai]

Hi @pahofmann ,

Thanks for your reply, it's work find 👍

In the api-entities-v2-selector i saw that "An entity with any of the specified tags is included to the response.". In my case, the first tag Environnement:Production return all entity of our environment. But i want to filter also with this other tag Projet Openshift:ged.

Is it possible to add conditions to the tags (ex : AND)? 

[pahofmann · Accepted solution]

Yes that's possible, should be added in the docs. 

All entity selector parts are AND connected and you can use the same one multiple times.

So if it should have all the tags use:

type(SERVICE),tag("Environnement:Production"),tag("Projet OpenShift:ged"),tag("Service Name:svc-document")

[pierre-yves_tai]

It work fine, thank for your help. 👏