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|
package server
import (
"context"
"math"
"time"
"github.com/prometheus/client_golang/prometheus"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/module/agent_tracker"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/module/agent_tracker/rpc"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/module/modserver"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/module/modshared"
"gitlab.com/gitlab-org/cluster-integration/gitlab-agent/v16/internal/tool/metric"
)
type Factory struct {
AgentQuerier agent_tracker.Querier
}
func (f *Factory) New(config *modserver.Config) (modserver.Module, error) {
rpc.RegisterAgentTrackerServer(config.ApiServer, &server{
agentQuerier: f.AgentQuerier,
})
connectedAgentsCountGaugeFunc := f.constructConnectedAgentsCountGaugeFunc()
err := metric.Register(config.Registerer, connectedAgentsCountGaugeFunc)
if err != nil {
return nil, err
}
return &module{}, nil
}
func (f *Factory) Name() string {
return agent_tracker.ModuleName
}
func (f *Factory) StartStopPhase() modshared.ModuleStartStopPhase {
return modshared.ModuleStartBeforeServers
}
func (f *Factory) constructConnectedAgentsCountGaugeFunc() prometheus.GaugeFunc {
return prometheus.NewGaugeFunc(prometheus.GaugeOpts{
Name: "connected_agents_count",
Help: "The number of unique connected agents",
}, func() float64 {
ctx, cancel := context.WithTimeout(context.Background(), time.Second)
defer cancel()
size, err := f.AgentQuerier.GetConnectedAgentsCount(ctx)
if err != nil {
return math.NaN()
}
return float64(size)
},
)
}
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