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package server
import (
"context"
"time"
"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"
otelmetric "go.opentelemetry.io/otel/metric"
)
type Factory struct {
AgentQuerier agent_tracker.Querier
}
func (f *Factory) New(config *modserver.Config) (modserver.Module, error) {
_, err := config.Meter.Int64ObservableGauge(
"connected_agents_count",
otelmetric.WithDescription("The number of unique connected agents"),
otelmetric.WithInt64Callback(f.connectedAgents),
)
if err != nil {
return nil, err
}
rpc.RegisterAgentTrackerServer(config.APIServer, &server{
agentQuerier: f.AgentQuerier,
})
return &modserver.NopModule{
ModuleName: agent_tracker.ModuleName,
}, nil
}
func (f *Factory) Name() string {
return agent_tracker.ModuleName
}
func (f *Factory) StartStopPhase() modshared.ModuleStartStopPhase {
return modshared.ModuleStartBeforeServers
}
func (f *Factory) connectedAgents(ctx context.Context, observer otelmetric.Int64Observer) error {
ctx, cancel := context.WithTimeout(ctx, time.Second)
defer cancel()
size, err := f.AgentQuerier.GetConnectedAgentsCount(ctx)
if err != nil {
return err
}
observer.Observe(size)
return nil
}
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