gitlab-org--gitlab-foss/app/controllers/projects/environments/prometheus_api_controller.rb

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# frozen_string_literal: true
class Projects::Environments::PrometheusApiController < Projects::ApplicationController
before_action :authorize_read_prometheus!
before_action :environment
def proxy
result = Prometheus::ProxyService.new(
environment,
proxy_method,
proxy_path,
proxy_params
).execute
if result.nil?
return render status: :no_content, json: {
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status: _('processing'),
message: _('Not ready yet. Try again later.')
}
end
if result[:status] == :success
render status: result[:http_status], json: result[:body]
else
render(
status: result[:http_status] || :bad_request,
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json: { status: result[:status], message: result[:message] }
)
end
end
private
def query_context
Gitlab::Prometheus::QueryVariables.call(environment)
end
def environment
@environment ||= project.environments.find(params[:id])
end
def proxy_method
request.method
end
def proxy_path
params[:proxy_path]
end
def proxy_params
substitute_query_variables(params).permit!
end
def substitute_query_variables(params)
query = params[:query]
return params unless query
params.merge(query: query % query_context)
end
end