Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/common/jolokia2/metric.go

@@ -0,0 +1,128 @@
+package jolokia2
+
+import "strings"
+
+// A MetricConfig represents a TOML form of
+// a Metric with some optional fields.
+type MetricConfig struct {
+	Name           string
+	Mbean          string
+	Paths          []string
+	FieldName      *string
+	FieldPrefix    *string
+	FieldSeparator *string
+	TagPrefix      *string
+	TagKeys        []string
+}
+
+// A Metric represents a specification for a
+// Jolokia read request, and the transformations
+// to apply to points generated from the responses.
+type Metric struct {
+	Name           string
+	Mbean          string
+	Paths          []string
+	FieldName      string
+	FieldPrefix    string
+	FieldSeparator string
+	TagPrefix      string
+	TagKeys        []string
+
+	mbeanDomain     string
+	mbeanProperties []string
+}
+
+func NewMetric(config MetricConfig, defaultFieldPrefix, defaultFieldSeparator, defaultTagPrefix string) Metric {
+	metric := Metric{
+		Name:    config.Name,
+		Mbean:   config.Mbean,
+		Paths:   config.Paths,
+		TagKeys: config.TagKeys,
+	}
+
+	if config.FieldName != nil {
+		metric.FieldName = *config.FieldName
+	}
+
+	if config.FieldPrefix == nil {
+		metric.FieldPrefix = defaultFieldPrefix
+	} else {
+		metric.FieldPrefix = *config.FieldPrefix
+	}
+
+	if config.FieldSeparator == nil {
+		metric.FieldSeparator = defaultFieldSeparator
+	} else {
+		metric.FieldSeparator = *config.FieldSeparator
+	}
+
+	if config.TagPrefix == nil {
+		metric.TagPrefix = defaultTagPrefix
+	} else {
+		metric.TagPrefix = *config.TagPrefix
+	}
+
+	mbeanDomain, mbeanProperties := parseMbeanObjectName(config.Mbean)
+	metric.mbeanDomain = mbeanDomain
+	metric.mbeanProperties = mbeanProperties
+
+	return metric
+}
+
+func (m Metric) MatchObjectName(name string) bool {
+	if name == m.Mbean {
+		return true
+	}
+
+	mbeanDomain, mbeanProperties := parseMbeanObjectName(name)
+	if mbeanDomain != m.mbeanDomain {
+		return false
+	}
+
+	if len(mbeanProperties) != len(m.mbeanProperties) {
+		return false
+	}
+
+NEXT_PROPERTY:
+	for _, mbeanProperty := range m.mbeanProperties {
+		for i := range mbeanProperties {
+			if mbeanProperties[i] == mbeanProperty {
+				continue NEXT_PROPERTY
+			}
+		}
+
+		return false
+	}
+
+	return true
+}
+
+func (m Metric) MatchAttributeAndPath(attribute, innerPath string) bool {
+	path := attribute
+	if innerPath != "" {
+		path = path + "/" + innerPath
+	}
+
+	for i := range m.Paths {
+		if path == m.Paths[i] {
+			return true
+		}
+	}
+
+	return false
+}
+
+func parseMbeanObjectName(name string) (string, []string) {
+	index := strings.Index(name, ":")
+	if index == -1 {
+		return name, nil
+	}
+
+	domain := name[:index]
+
+	if index+1 > len(name) {
+		return domain, nil
+	}
+
+	return domain, strings.Split(name[index+1:], ",")
+}