glide up

vendor/github.com/go-kit/kit/metrics/internal/lv/space.go

@@ -21,13 +21,6 @@ func (s *Space) Observe(name string, lvs LabelValues, value float64) {
 	s.nodeFor(name).observe(lvs, value)
 }
 
-// Add locates the time series identified by the name and label values in
-// the vector space, and appends the delta to the last value in the list of
-// observations.
-func (s *Space) Add(name string, lvs LabelValues, delta float64) {
-	s.nodeFor(name).add(lvs, delta)
-}
-
 // Walk traverses the vector space and invokes fn for each non-empty time series
 // which is encountered. Return false to abort the traversal.
 func (s *Space) Walk(fn func(name string, lvs LabelValues, observations []float64) bool) {
@@ -98,34 +91,6 @@ func (n *node) observe(lvs LabelValues, value float64) {
 	child.observe(tail, value)
 }
 
-func (n *node) add(lvs LabelValues, delta float64) {
-	n.mtx.Lock()
-	defer n.mtx.Unlock()
-	if len(lvs) == 0 {
-		var value float64
-		if len(n.observations) > 0 {
-			value = last(n.observations) + delta
-		} else {
-			value = delta
-		}
-		n.observations = append(n.observations, value)
-		return
-	}
-	if len(lvs) < 2 {
-		panic("too few LabelValues; programmer error!")
-	}
-	head, tail := pair{lvs[0], lvs[1]}, lvs[2:]
-	if n.children == nil {
-		n.children = map[pair]*node{}
-	}
-	child, ok := n.children[head]
-	if !ok {
-		child = &node{}
-		n.children[head] = child
-	}
-	child.add(tail, delta)
-}
-
 func (n *node) walk(lvs LabelValues, fn func(LabelValues, []float64) bool) bool {
 	n.mtx.RLock()
 	defer n.mtx.RUnlock()
@@ -139,7 +104,3 @@ func (n *node) walk(lvs LabelValues, fn func(LabelValues, []float64) bool) bool
 	}
 	return true
 }
-
-func last(a []float64) float64 {
-	return a[len(a)-1]
-}