implement tenants endpoint for victorialogs

[dmitryk-dk]

implement tenants endpoint for victorialogs

Describe Your Changes

Implemented endpoint like VictoriaMetrics has /select/admin/tenants. This endpoint returns tenants from the storage as slice of strings like []{"0:0", "1:0"}.
This endpoint can help to build UI with requests per tenant.

{
  "status": "success",
  "data": [
    "0:0",
    "2:1",
    "3:1"
  ]
}

Checked both solutions, single version and cluster. Fixed all comments from this VictoriaMetrics/VictoriaMetrics#7484

Checklist

The following checks are mandatory:

• My change adheres to VictoriaMetrics contributing guidelines.
• My change adheres to VictoriaMetrics development goals.

[vadimalekseev]

LGTM

Someone please verify the logic of tenants parsing

[valyala]

@dmitryk-dk , could you rebase this pull request on top of the #709 ?

[jiekun]

Let me do this. I promised to rebase this PR after my one. cc @dmitryk-dk I'm working on it now.

OK dk is 1 step ahead of me so I'll leave the rebase work to him. Let me know if anything I can help with.

[dmitryk-dk]

@dmitryk-dk , could you rebase this pull request on top of the #709 ?

Hi @valyala , @jiekun ! I have rebased the code to this branch.

1. Run first storage
 ./victoria-logs-darwin-arm64 -httpListenAddr=:9491 -storageDataPath=victoria-logs-data-1
 2. Run second storage
 ./victoria-logs-darwin-arm64 -httpListenAddr=:9492 -storageDataPath=victoria-logs-data-2
 3. Run service (insert, select)
 ./victoria-logs-darwin-arm64 -httpListenAddr=:9481 -storageNode=localhost:9491,localhost:9492
4. Run service (insert, select)
 ./victoria-logs-darwin-arm64 -httpListenAddr=:9471 -storageNode=localhost:9491,localhost:9492

Write data

echo '{"create":{}} 
{"_msg":"cannot open file","_time":"0","host.name":"host123"}
' | curl -X POST -H 'Content-Type: application/json' -H 'AccountID:5' -H 'ProjectID:2' --data-binary @- http://localhost:9471/insert/elasticsearch/_bulk
{"took":0,"errors":false,"items":[{"create":{"status":201}}]}                                                                                        

Select tenants

 curl -X POST -H 'Content-Type: application/json' http://localhost:9481/select/admin/tenants
{"status":"success","data":["2:1","5:2","5:10"]}

Checked the same for the single

 curl -X POST -H 'Content-Type: application/json' http://localhost:9428/select/admin/tenants                                                      
{"status":"success","data":["5:2"]}%