Ben Kochie
8 years ago
committed by
GitHub
commit
361b5bf85d
@ -1,80 +0,0 @@ |
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Package ganglia provides types for unmarshalling gmond's XML output.
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//
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// Not used elements in gmond's XML output are commented.
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// In case you want to use them, please change the names so that one
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// can understand without needing to know what the acronym stands for.
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package ganglia |
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import "encoding/xml" |
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// ExtraElement describes EXTRA_ELEMENT elements.
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type ExtraElement struct { |
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Name string `xml:"NAME,attr"` |
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Val string `xml:"VAL,attr"` |
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} |
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// ExtraData describes EXTRA_DATA elements.
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type ExtraData struct { |
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ExtraElements []ExtraElement `xml:"EXTRA_ELEMENT"` |
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} |
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// Metric describes METRIC elements.
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type Metric struct { |
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Name string `xml:"NAME,attr"` |
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Value float64 `xml:"VAL,attr"` |
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/* |
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Unit string `xml:"UNITS,attr"` |
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Slope string `xml:"SLOPE,attr"` |
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Tn int `xml:"TN,attr"` |
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Tmax int `xml:"TMAX,attr"` |
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Dmax int `xml:"DMAX,attr"` |
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*/ |
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ExtraData ExtraData `xml:"EXTRA_DATA"` |
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} |
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// Host describes HOST elements.
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type Host struct { |
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Name string `xml:"NAME,attr"` |
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/* |
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Ip string `xml:"IP,attr"` |
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Tags string `xml:"TAGS,attr"` |
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Reported int `xml:"REPORTED,attr"` |
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Tn int `xml:"TN,attr"` |
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Tmax int `xml:"TMAX,attr"` |
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Dmax int `xml:"DMAX,attr"` |
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Location string `xml:"LOCATION,attr"` |
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GmondStarted int `xml:"GMOND_STARTED",attr"` |
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*/ |
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Metrics []Metric `xml:"METRIC"` |
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} |
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// Cluster describes CLUSTER elements.
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type Cluster struct { |
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Name string `xml:"NAME,attr"` |
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/* |
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Owner string `xml:"OWNER,attr"` |
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LatLong string `xml:"LATLONG,attr"` |
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Url string `xml:"URL,attr"` |
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Localtime int `xml:"LOCALTIME,attr"` |
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*/ |
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Hosts []Host `xml:"HOST"` |
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} |
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// Ganglia describes the top-level XML structure.
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type Ganglia struct { |
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XMLNAME xml.Name `xml:"GANGLIA_XML"` |
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Clusters []Cluster `xml:"CLUSTER"` |
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} |
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@ -1,123 +0,0 @@ |
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// Copyright 2015 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !nogmond
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package collector |
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import ( |
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"bufio" |
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"encoding/xml" |
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"fmt" |
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"io" |
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"net" |
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"regexp" |
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"time" |
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"github.com/prometheus/client_golang/prometheus" |
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"github.com/prometheus/common/log" |
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"github.com/prometheus/node_exporter/collector/ganglia" |
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) |
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const ( |
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gangliaAddress = "127.0.0.1:8649" |
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gangliaProto = "tcp" |
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gangliaTimeout = 30 * time.Second |
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gangliaNamespace = "ganglia" |
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) |
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type gmondCollector struct { |
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metrics map[string]*prometheus.GaugeVec |
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} |
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func init() { |
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registerCollector("gmond", defaultDisabled, NewGmondCollector) |
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} |
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var illegalCharsRE = regexp.MustCompile(`[^a-zA-Z0-9_]`) |
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// NewGmondCollector returns a new Collector scraping ganglia.
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func NewGmondCollector() (Collector, error) { |
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warnDeprecated("gmond") |
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c := gmondCollector{ |
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metrics: map[string]*prometheus.GaugeVec{}, |
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} |
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return &c, nil |
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} |
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func (c *gmondCollector) Update(ch chan<- prometheus.Metric) error { |
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conn, err := net.Dial(gangliaProto, gangliaAddress) |
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log.Debugf("gmondCollector Update") |
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if err != nil { |
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return fmt.Errorf("can't connect to gmond: %s", err) |
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} |
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conn.SetDeadline(time.Now().Add(gangliaTimeout)) |
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ganglia := ganglia.Ganglia{} |
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decoder := xml.NewDecoder(bufio.NewReader(conn)) |
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decoder.CharsetReader = toUtf8 |
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err = decoder.Decode(&ganglia) |
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if err != nil { |
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return fmt.Errorf("couldn't parse xml: %s", err) |
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} |
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for _, cluster := range ganglia.Clusters { |
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for _, host := range cluster.Hosts { |
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for _, metric := range host.Metrics { |
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name := illegalCharsRE.ReplaceAllString(metric.Name, "_") |
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c.setMetric(name, cluster.Name, metric) |
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} |
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} |
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} |
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for _, m := range c.metrics { |
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m.Collect(ch) |
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} |
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return err |
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} |
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func (c *gmondCollector) setMetric(name, cluster string, metric ganglia.Metric) { |
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if _, ok := c.metrics[name]; !ok { |
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var desc string |
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var title string |
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for _, element := range metric.ExtraData.ExtraElements { |
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switch element.Name { |
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case "DESC": |
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desc = element.Val |
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case "TITLE": |
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title = element.Val |
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} |
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if title != "" && desc != "" { |
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break |
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} |
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} |
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log.Debugf("Register %s: %s", name, desc) |
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c.metrics[name] = prometheus.NewGaugeVec( |
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prometheus.GaugeOpts{ |
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Namespace: gangliaNamespace, |
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Name: name, |
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Help: desc, |
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}, |
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[]string{"cluster"}, |
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) |
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} |
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log.Debugf("Set %s{cluster=%q}: %f", name, cluster, metric.Value) |
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c.metrics[name].WithLabelValues(cluster).Set(metric.Value) |
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} |
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func toUtf8(charset string, input io.Reader) (io.Reader, error) { |
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return input, nil //FIXME
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} |
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