1 files changed, 0 insertions, 294 deletions
diff --git a/plugins/metrics/rpc.go b/plugins/metrics/rpc.go
deleted file mode 100644
index b8897098..00000000
--- a/plugins/metrics/rpc.go
+++ /dev/null
@@ -1,294 +0,0 @@
-package metrics
-
-import (
-	"github.com/prometheus/client_golang/prometheus"
-	"github.com/spiral/errors"
-	"github.com/spiral/roadrunner/v2/interfaces/log"
-)
-
-type rpcServer struct {
-	svc *Plugin
-	log log.Logger
-}
-
-// Metric represent single metric produced by the application.
-type Metric struct {
-	// Collector name.
-	Name string
-
-	// Collector value.
-	Value float64
-
-	// Labels associated with metric. Only for vector metrics. Must be provided in a form of label values.
-	Labels []string
-}
-
-// Add new metric to the designated collector.
-func (rpc *rpcServer) Add(m *Metric, ok *bool) error {
-	const op = errors.Op("Add metric")
-	rpc.log.Info("Adding metric", "name", m.Name, "value", m.Value, "labels", m.Labels)
-	c, exist := rpc.svc.collectors.Load(m.Name)
-	if !exist {
-		rpc.log.Error("undefined collector", "collector", m.Name)
-		return errors.E(op, errors.Errorf("undefined collector %s, try first Declare the desired collector", m.Name))
-	}
-
-	switch c := c.(type) {
-	case prometheus.Gauge:
-		c.Add(m.Value)
-
-	case *prometheus.GaugeVec:
-		if len(m.Labels) == 0 {
-			rpc.log.Error("required labels for collector", "collector", m.Name)
-			return errors.E(op, errors.Errorf("required labels for collector %s", m.Name))
-		}
-
-		gauge, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			rpc.log.Error("failed to get metrics with label values", "collector", m.Name, "labels", m.Labels)
-			return errors.E(op, err)
-		}
-		gauge.Add(m.Value)
-	case prometheus.Counter:
-		c.Add(m.Value)
-
-	case *prometheus.CounterVec:
-		if len(m.Labels) == 0 {
-			return errors.E(op, errors.Errorf("required labels for collector `%s`", m.Name))
-		}
-
-		gauge, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			rpc.log.Error("failed to get metrics with label values", "collector", m.Name, "labels", m.Labels)
-			return errors.E(op, err)
-		}
-		gauge.Add(m.Value)
-
-	default:
-		return errors.E(op, errors.Errorf("collector %s does not support method `Add`", m.Name))
-	}
-
-	// RPC, set ok to true as return value. Need by rpc.Call reply argument
-	*ok = true
-	rpc.log.Info("new metric successfully added", "name", m.Name, "labels", m.Labels, "value", m.Value)
-	return nil
-}
-
-// Sub subtract the value from the specific metric (gauge only).
-func (rpc *rpcServer) Sub(m *Metric, ok *bool) error {
-	const op = errors.Op("Subtracting metric")
-	rpc.log.Info("Subtracting value from metric", "name", m.Name, "value", m.Value, "labels", m.Labels)
-	c, exist := rpc.svc.collectors.Load(m.Name)
-	if !exist {
-		rpc.log.Error("undefined collector", "name", m.Name, "value", m.Value, "labels", m.Labels)
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-	if c == nil {
-		// can it be nil ??? I guess can't
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-
-	switch c := c.(type) {
-	case prometheus.Gauge:
-		c.Sub(m.Value)
-
-	case *prometheus.GaugeVec:
-		if len(m.Labels) == 0 {
-			rpc.log.Error("required labels for collector, but none was provided", "name", m.Name, "value", m.Value)
-			return errors.E(op, errors.Errorf("required labels for collector %s", m.Name))
-		}
-
-		gauge, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			rpc.log.Error("failed to get metrics with label values", "collector", m.Name, "labels", m.Labels)
-			return errors.E(op, err)
-		}
-		gauge.Sub(m.Value)
-	default:
-		return errors.E(op, errors.Errorf("collector `%s` does not support method `Sub`", m.Name))
-	}
-	rpc.log.Info("Subtracting operation applied successfully", "name", m.Name, "labels", m.Labels, "value", m.Value)
-
-	*ok = true
-	return nil
-}
-
-// Observe the value (histogram and summary only).
-func (rpc *rpcServer) Observe(m *Metric, ok *bool) error {
-	const op = errors.Op("Observe metrics")
-	rpc.log.Info("Observing metric", "name", m.Name, "value", m.Value, "labels", m.Labels)
-
-	c, exist := rpc.svc.collectors.Load(m.Name)
-	if !exist {
-		rpc.log.Error("undefined collector", "name", m.Name, "value", m.Value, "labels", m.Labels)
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-	if c == nil {
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-
-	switch c := c.(type) {
-	case *prometheus.SummaryVec:
-		if len(m.Labels) == 0 {
-			return errors.E(op, errors.Errorf("required labels for collector `%s`", m.Name))
-		}
-
-		observer, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			return errors.E(op, err)
-		}
-		observer.Observe(m.Value)
-
-	case prometheus.Histogram:
-		c.Observe(m.Value)
-
-	case *prometheus.HistogramVec:
-		if len(m.Labels) == 0 {
-			return errors.E(op, errors.Errorf("required labels for collector `%s`", m.Name))
-		}
-
-		observer, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			rpc.log.Error("failed to get metrics with label values", "collector", m.Name, "labels", m.Labels)
-			return errors.E(op, err)
-		}
-		observer.Observe(m.Value)
-	default:
-		return errors.E(op, errors.Errorf("collector `%s` does not support method `Observe`", m.Name))
-	}
-
-	rpc.log.Info("observe operation finished successfully", "name", m.Name, "labels", m.Labels, "value", m.Value)
-
-	*ok = true
-	return nil
-}
-
-// Declare is used to register new collector in prometheus
-// THE TYPES ARE:
-// 	NamedCollector -> Collector with the name
-// 	bool -> RPC reply value
-// RETURNS:
-// 	error
-func (rpc *rpcServer) Declare(nc *NamedCollector, ok *bool) error {
-	const op = errors.Op("Declare metric")
-	rpc.log.Info("Declaring new metric", "name", nc.Name, "type", nc.Type, "namespace", nc.Namespace)
-	_, exist := rpc.svc.collectors.Load(nc.Name)
-	if exist {
-		rpc.log.Error("metric with provided name already exist", "name", nc.Name, "type", nc.Type, "namespace", nc.Namespace)
-		return errors.E(op, errors.Errorf("tried to register existing collector with the name `%s`", nc.Name))
-	}
-
-	var collector prometheus.Collector
-	switch nc.Type {
-	case Histogram:
-		opts := prometheus.HistogramOpts{
-			Name:      nc.Name,
-			Namespace: nc.Namespace,
-			Subsystem: nc.Subsystem,
-			Help:      nc.Help,
-			Buckets:   nc.Buckets,
-		}
-
-		if len(nc.Labels) != 0 {
-			collector = prometheus.NewHistogramVec(opts, nc.Labels)
-		} else {
-			collector = prometheus.NewHistogram(opts)
-		}
-	case Gauge:
-		opts := prometheus.GaugeOpts{
-			Name:      nc.Name,
-			Namespace: nc.Namespace,
-			Subsystem: nc.Subsystem,
-			Help:      nc.Help,
-		}
-
-		if len(nc.Labels) != 0 {
-			collector = prometheus.NewGaugeVec(opts, nc.Labels)
-		} else {
-			collector = prometheus.NewGauge(opts)
-		}
-	case Counter:
-		opts := prometheus.CounterOpts{
-			Name:      nc.Name,
-			Namespace: nc.Namespace,
-			Subsystem: nc.Subsystem,
-			Help:      nc.Help,
-		}
-
-		if len(nc.Labels) != 0 {
-			collector = prometheus.NewCounterVec(opts, nc.Labels)
-		} else {
-			collector = prometheus.NewCounter(opts)
-		}
-	case Summary:
-		opts := prometheus.SummaryOpts{
-			Name:      nc.Name,
-			Namespace: nc.Namespace,
-			Subsystem: nc.Subsystem,
-			Help:      nc.Help,
-		}
-
-		if len(nc.Labels) != 0 {
-			collector = prometheus.NewSummaryVec(opts, nc.Labels)
-		} else {
-			collector = prometheus.NewSummary(opts)
-		}
-
-	default:
-		return errors.E(op, errors.Errorf("unknown collector type %s", nc.Type))
-	}
-
-	// add collector to sync.Map
-	rpc.svc.collectors.Store(nc.Name, collector)
-	// that method might panic, we handle it by recover
-	err := rpc.svc.Register(collector)
-	if err != nil {
-		*ok = false
-		return errors.E(op, err)
-	}
-
-	rpc.log.Info("metric successfully added", "name", nc.Name, "type", nc.Type, "namespace", nc.Namespace)
-
-	*ok = true
-	return nil
-}
-
-// Set the metric value (only for gaude).
-func (rpc *rpcServer) Set(m *Metric, ok *bool) (err error) {
-	const op = errors.Op("Set metric")
-	rpc.log.Info("Observing metric", "name", m.Name, "value", m.Value, "labels", m.Labels)
-
-	c, exist := rpc.svc.collectors.Load(m.Name)
-	if !exist {
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-	if c == nil {
-		return errors.E(op, errors.Errorf("undefined collector %s", m.Name))
-	}
-
-	switch c := c.(type) {
-	case prometheus.Gauge:
-		c.Set(m.Value)
-
-	case *prometheus.GaugeVec:
-		if len(m.Labels) == 0 {
-			rpc.log.Error("required labels for collector", "collector", m.Name)
-			return errors.E(op, errors.Errorf("required labels for collector %s", m.Name))
-		}
-
-		gauge, err := c.GetMetricWithLabelValues(m.Labels...)
-		if err != nil {
-			rpc.log.Error("failed to get metrics with label values", "collector", m.Name, "labels", m.Labels)
-			return errors.E(op, err)
-		}
-		gauge.Set(m.Value)
-
-	default:
-		return errors.E(op, errors.Errorf("collector `%s` does not support method Set", m.Name))
-	}
-
-	rpc.log.Info("set operation finished successfully", "name", m.Name, "labels", m.Labels, "value", m.Value)
-
-	*ok = true
-	return nil
-}