Monitor list filtering by tags is not returning data

[martinezcoder]

Describe the bug

Calling the list monitors method with options to filter by tags is not working. It returns an empty list. I have a couple of monitors with the "my-tag" tag, and I have already checked that these monitors are returned if I don't use filters, including the one with the tag.

To Reproduce
Steps to reproduce the behavior:

1. Add the tag "my-tag" to a couple of monitors
2. Call the API to list these monitors

DatadogAPIClient::V1::MonitorsAPI.new(@client).list_monitors({ tags: "my-tag"})

3. Debug the DatadogAPIClient::V1::MonitorsAPI request.

Debugging the code at datadog_api_client-2.27.1/lib/datadog_api_client/v1/api/monitors_api.rb:557 shows that the information sent to the API is correct:

{
  :tags=>"my-tag",
  :operation=>:list_monitors, 
  :header_params=>{"Accept"=>"application/json"}, 
  :query_params=> {
    :tags=>"my-tag"
  }, 
  :form_params=>{}, 
  :body=>nil, 
  :auth_names=>[:apiKeyAuth, :appKeyAuth, :AuthZ], 
  :return_type=>"Array<Monitor>", 
  :api_version=>"V1"
}

However, it returns an empty list:

[7] pry(#<DatadogAPIClient::V1::MonitorsAPI>)> @api_client.call_api(Net::HTTP::Get, local_var_path, new_options)
=> [[],
 200,
 {"date"=>["Thu, 17 Oct 2024 09:02:16 GMT"],
  "content-type"=>["application/json"],
  "content-length"=>["3"],
  "etag"=>["..."],
  "x-frame-options"=>["SAMEORIGIN"],
  "content-security-policy"=>["..."],
  "x-ratelimit-limit"=>["1000"],
  "x-ratelimit-period"=>["10"],
  "x-ratelimit-remaining"=>["999"],
  "x-ratelimit-reset"=>["4"],
  "x-ratelimit-name"=>["get_all_monitors"],
  "x-content-type-options"=>["nosniff"],
  "strict-transport-security"=>["max-age=31536000; includeSubDomains; preload"],
  "via"=>["1.1 google"],
  "alt-svc"=>["h3=\":443\"; ma=2592000,h3-29=\":443\"; ma=2592000"],
  "connection"=>["close"]}]

Expected behavior
It returns the list of monitors with the mentioned tag.

Screenshots
n/a

Environment and Versions (please complete the following information):

• ruby version 3.3.5
• gem version datadog_api_client-2.27.1
• gem service DatadogAPIClient::V1::MonitorsAPI

Additional context

The seems to be in the API itself https://api.datadoghq.eu/api/v1/monitor or maybe the query parameter to filter tags has a different name.