VOL-1558 Implementation of openolt adapter with dep for dependency management
Also updated the build system to take this into account.
Currently dep ensure fails due to missing libraries in voltha-go, but the vendor folder has been updated otherwise.
This can be worked around in development using the LOCAL_VOLTHAGO variable described in the readme
This does not build currrently, but that is due to missing code in voltha-go master.
This pattern is consistent with how voltha-go does things, but does not leave you dependent on it to build.
See the readme for how to use dep.
The resourcemanager file is no longer hidden.
Change-Id: I25b8472dbc517b193970597c9f43ddff18c2d89f
diff --git a/vendor/github.com/armon/go-metrics/metrics.go b/vendor/github.com/armon/go-metrics/metrics.go
new file mode 100644
index 0000000..cf9def7
--- /dev/null
+++ b/vendor/github.com/armon/go-metrics/metrics.go
@@ -0,0 +1,278 @@
+package metrics
+
+import (
+ "runtime"
+ "strings"
+ "time"
+
+ "github.com/hashicorp/go-immutable-radix"
+)
+
+type Label struct {
+ Name string
+ Value string
+}
+
+func (m *Metrics) SetGauge(key []string, val float32) {
+ m.SetGaugeWithLabels(key, val, nil)
+}
+
+func (m *Metrics) SetGaugeWithLabels(key []string, val float32, labels []Label) {
+ if m.HostName != "" {
+ if m.EnableHostnameLabel {
+ labels = append(labels, Label{"host", m.HostName})
+ } else if m.EnableHostname {
+ key = insert(0, m.HostName, key)
+ }
+ }
+ if m.EnableTypePrefix {
+ key = insert(0, "gauge", key)
+ }
+ if m.ServiceName != "" {
+ if m.EnableServiceLabel {
+ labels = append(labels, Label{"service", m.ServiceName})
+ } else {
+ key = insert(0, m.ServiceName, key)
+ }
+ }
+ allowed, labelsFiltered := m.allowMetric(key, labels)
+ if !allowed {
+ return
+ }
+ m.sink.SetGaugeWithLabels(key, val, labelsFiltered)
+}
+
+func (m *Metrics) EmitKey(key []string, val float32) {
+ if m.EnableTypePrefix {
+ key = insert(0, "kv", key)
+ }
+ if m.ServiceName != "" {
+ key = insert(0, m.ServiceName, key)
+ }
+ allowed, _ := m.allowMetric(key, nil)
+ if !allowed {
+ return
+ }
+ m.sink.EmitKey(key, val)
+}
+
+func (m *Metrics) IncrCounter(key []string, val float32) {
+ m.IncrCounterWithLabels(key, val, nil)
+}
+
+func (m *Metrics) IncrCounterWithLabels(key []string, val float32, labels []Label) {
+ if m.HostName != "" && m.EnableHostnameLabel {
+ labels = append(labels, Label{"host", m.HostName})
+ }
+ if m.EnableTypePrefix {
+ key = insert(0, "counter", key)
+ }
+ if m.ServiceName != "" {
+ if m.EnableServiceLabel {
+ labels = append(labels, Label{"service", m.ServiceName})
+ } else {
+ key = insert(0, m.ServiceName, key)
+ }
+ }
+ allowed, labelsFiltered := m.allowMetric(key, labels)
+ if !allowed {
+ return
+ }
+ m.sink.IncrCounterWithLabels(key, val, labelsFiltered)
+}
+
+func (m *Metrics) AddSample(key []string, val float32) {
+ m.AddSampleWithLabels(key, val, nil)
+}
+
+func (m *Metrics) AddSampleWithLabels(key []string, val float32, labels []Label) {
+ if m.HostName != "" && m.EnableHostnameLabel {
+ labels = append(labels, Label{"host", m.HostName})
+ }
+ if m.EnableTypePrefix {
+ key = insert(0, "sample", key)
+ }
+ if m.ServiceName != "" {
+ if m.EnableServiceLabel {
+ labels = append(labels, Label{"service", m.ServiceName})
+ } else {
+ key = insert(0, m.ServiceName, key)
+ }
+ }
+ allowed, labelsFiltered := m.allowMetric(key, labels)
+ if !allowed {
+ return
+ }
+ m.sink.AddSampleWithLabels(key, val, labelsFiltered)
+}
+
+func (m *Metrics) MeasureSince(key []string, start time.Time) {
+ m.MeasureSinceWithLabels(key, start, nil)
+}
+
+func (m *Metrics) MeasureSinceWithLabels(key []string, start time.Time, labels []Label) {
+ if m.HostName != "" && m.EnableHostnameLabel {
+ labels = append(labels, Label{"host", m.HostName})
+ }
+ if m.EnableTypePrefix {
+ key = insert(0, "timer", key)
+ }
+ if m.ServiceName != "" {
+ if m.EnableServiceLabel {
+ labels = append(labels, Label{"service", m.ServiceName})
+ } else {
+ key = insert(0, m.ServiceName, key)
+ }
+ }
+ allowed, labelsFiltered := m.allowMetric(key, labels)
+ if !allowed {
+ return
+ }
+ now := time.Now()
+ elapsed := now.Sub(start)
+ msec := float32(elapsed.Nanoseconds()) / float32(m.TimerGranularity)
+ m.sink.AddSampleWithLabels(key, msec, labelsFiltered)
+}
+
+// UpdateFilter overwrites the existing filter with the given rules.
+func (m *Metrics) UpdateFilter(allow, block []string) {
+ m.UpdateFilterAndLabels(allow, block, m.AllowedLabels, m.BlockedLabels)
+}
+
+// UpdateFilterAndLabels overwrites the existing filter with the given rules.
+func (m *Metrics) UpdateFilterAndLabels(allow, block, allowedLabels, blockedLabels []string) {
+ m.filterLock.Lock()
+ defer m.filterLock.Unlock()
+
+ m.AllowedPrefixes = allow
+ m.BlockedPrefixes = block
+
+ if allowedLabels == nil {
+ // Having a white list means we take only elements from it
+ m.allowedLabels = nil
+ } else {
+ m.allowedLabels = make(map[string]bool)
+ for _, v := range allowedLabels {
+ m.allowedLabels[v] = true
+ }
+ }
+ m.blockedLabels = make(map[string]bool)
+ for _, v := range blockedLabels {
+ m.blockedLabels[v] = true
+ }
+ m.AllowedLabels = allowedLabels
+ m.BlockedLabels = blockedLabels
+
+ m.filter = iradix.New()
+ for _, prefix := range m.AllowedPrefixes {
+ m.filter, _, _ = m.filter.Insert([]byte(prefix), true)
+ }
+ for _, prefix := range m.BlockedPrefixes {
+ m.filter, _, _ = m.filter.Insert([]byte(prefix), false)
+ }
+}
+
+// labelIsAllowed return true if a should be included in metric
+// the caller should lock m.filterLock while calling this method
+func (m *Metrics) labelIsAllowed(label *Label) bool {
+ labelName := (*label).Name
+ if m.blockedLabels != nil {
+ _, ok := m.blockedLabels[labelName]
+ if ok {
+ // If present, let's remove this label
+ return false
+ }
+ }
+ if m.allowedLabels != nil {
+ _, ok := m.allowedLabels[labelName]
+ return ok
+ }
+ // Allow by default
+ return true
+}
+
+// filterLabels return only allowed labels
+// the caller should lock m.filterLock while calling this method
+func (m *Metrics) filterLabels(labels []Label) []Label {
+ if labels == nil {
+ return nil
+ }
+ toReturn := labels[:0]
+ for _, label := range labels {
+ if m.labelIsAllowed(&label) {
+ toReturn = append(toReturn, label)
+ }
+ }
+ return toReturn
+}
+
+// Returns whether the metric should be allowed based on configured prefix filters
+// Also return the applicable labels
+func (m *Metrics) allowMetric(key []string, labels []Label) (bool, []Label) {
+ m.filterLock.RLock()
+ defer m.filterLock.RUnlock()
+
+ if m.filter == nil || m.filter.Len() == 0 {
+ return m.Config.FilterDefault, m.filterLabels(labels)
+ }
+
+ _, allowed, ok := m.filter.Root().LongestPrefix([]byte(strings.Join(key, ".")))
+ if !ok {
+ return m.Config.FilterDefault, m.filterLabels(labels)
+ }
+
+ return allowed.(bool), m.filterLabels(labels)
+}
+
+// Periodically collects runtime stats to publish
+func (m *Metrics) collectStats() {
+ for {
+ time.Sleep(m.ProfileInterval)
+ m.emitRuntimeStats()
+ }
+}
+
+// Emits various runtime statsitics
+func (m *Metrics) emitRuntimeStats() {
+ // Export number of Goroutines
+ numRoutines := runtime.NumGoroutine()
+ m.SetGauge([]string{"runtime", "num_goroutines"}, float32(numRoutines))
+
+ // Export memory stats
+ var stats runtime.MemStats
+ runtime.ReadMemStats(&stats)
+ m.SetGauge([]string{"runtime", "alloc_bytes"}, float32(stats.Alloc))
+ m.SetGauge([]string{"runtime", "sys_bytes"}, float32(stats.Sys))
+ m.SetGauge([]string{"runtime", "malloc_count"}, float32(stats.Mallocs))
+ m.SetGauge([]string{"runtime", "free_count"}, float32(stats.Frees))
+ m.SetGauge([]string{"runtime", "heap_objects"}, float32(stats.HeapObjects))
+ m.SetGauge([]string{"runtime", "total_gc_pause_ns"}, float32(stats.PauseTotalNs))
+ m.SetGauge([]string{"runtime", "total_gc_runs"}, float32(stats.NumGC))
+
+ // Export info about the last few GC runs
+ num := stats.NumGC
+
+ // Handle wrap around
+ if num < m.lastNumGC {
+ m.lastNumGC = 0
+ }
+
+ // Ensure we don't scan more than 256
+ if num-m.lastNumGC >= 256 {
+ m.lastNumGC = num - 255
+ }
+
+ for i := m.lastNumGC; i < num; i++ {
+ pause := stats.PauseNs[i%256]
+ m.AddSample([]string{"runtime", "gc_pause_ns"}, float32(pause))
+ }
+ m.lastNumGC = num
+}
+
+// Inserts a string value at an index into the slice
+func insert(i int, v string, s []string) []string {
+ s = append(s, "")
+ copy(s[i+1:], s[i:])
+ s[i] = v
+ return s
+}