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Merge pull request #697 from NajmudheenCT/lvm_exporter_dep_ensure
Telemetry: Lvm exporter for Prometheus
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,200 @@ | ||
| // Copyright (c) 2019 The OpenSDS Authors. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may | ||
| // not use this file except in compliance with the License. You may obtain | ||
| // a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT | ||
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the | ||
| // License for the specific language governing permissions and limitations | ||
| // under the License. | ||
| package lvm | ||
|
|
||
| import ( | ||
| log "github.com/golang/glog" | ||
| "github.com/opensds/opensds/pkg/model" | ||
| "gopkg.in/yaml.v2" | ||
| "strconv" | ||
| "time" | ||
| ) | ||
|
|
||
| // Todo: Move this Yaml config to a file | ||
|
|
||
| var data = ` | ||
| resources: | ||
| - resource: volume | ||
| metrics: | ||
| - IOPS | ||
| - ReadThroughput | ||
| - WriteThroughput | ||
| - ResponseTime | ||
| - ServiceTime | ||
| - UtilizationPercentage | ||
| units: | ||
| - tps | ||
| - KB/s | ||
| - KB/s | ||
| - ms | ||
| - ms | ||
| - '%' | ||
| - resource: pool | ||
| metrics: | ||
| - ReadRequests | ||
| - WriteRequests | ||
| - ReponseTime | ||
| units: | ||
| - tps | ||
| - KB/s | ||
| - KB/s | ||
| - ms | ||
| - ms | ||
| - '%' | ||
| ` | ||
|
|
||
| type Config struct { | ||
| Resource string | ||
| Metrics []string | ||
| Units []string | ||
| } | ||
|
|
||
| type Configs struct { | ||
| Cfgs []Config `resources` | ||
| } | ||
| type MetricDriver struct { | ||
| cli *MetricCli | ||
| } | ||
|
|
||
| func metricInMetrics(metric string, metriclist []string) bool { | ||
| for _, m := range metriclist { | ||
| if m == metric { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
| func getCurrentUnixTimestamp() int64 { | ||
| now := time.Now() | ||
| secs := now.Unix() | ||
| return secs | ||
| } | ||
| func getMetricToUnitMap() map[string]string { | ||
|
|
||
| //construct metrics to value map | ||
| var configs Configs | ||
| //Read supported metric list from yaml config | ||
| //Todo: Move this to read from file | ||
| source := []byte(data) | ||
|
|
||
| error := yaml.Unmarshal(source, &configs) | ||
| if error != nil { | ||
| log.Fatalf("Unmarshal error: %v", error) | ||
| } | ||
| metricToUnitMap := make(map[string]string) | ||
| for _, resources := range configs.Cfgs { | ||
| switch resources.Resource { | ||
| //ToDo: Other Cases needs to be added | ||
| case "volume": | ||
| for index, metricName := range resources.Metrics { | ||
|
|
||
| metricToUnitMap[metricName] = resources.Units[index] | ||
|
|
||
| } | ||
| } | ||
| } | ||
| return metricToUnitMap | ||
| } | ||
|
|
||
| // ValidateMetricsSupportList:- is to check whether the posted metric list is in the uspport list of this driver | ||
| // metricList-> Posted metric list | ||
| // supportedMetrics -> list of supported metrics | ||
| func (d *MetricDriver) ValidateMetricsSupportList(metricList []string, resourceType string) (supportedMetrics []string, err error) { | ||
| var configs Configs | ||
|
|
||
| //Read supported metric list from yaml config | ||
| //Todo: Move this to read from file | ||
| source := []byte(data) | ||
| error := yaml.Unmarshal(source, &configs) | ||
| if error != nil { | ||
| log.Fatalf("Unmarshal error: %v", error) | ||
| } | ||
|
|
||
| for _, resources := range configs.Cfgs { | ||
| switch resources.Resource { | ||
| //ToDo: Other Cases needs to be added | ||
| case "volume": | ||
| for _, metricName := range metricList { | ||
| if metricInMetrics(metricName, resources.Metrics) { | ||
| supportedMetrics = append(supportedMetrics, metricName) | ||
|
|
||
| } else { | ||
| log.Infof("metric:%s is not in the supported list", metricName) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return supportedMetrics, nil | ||
| } | ||
|
|
||
| // CollectMetrics: Driver entry point to collect metrics. This will be invoked by the dock | ||
| // metricsList-> posted metric list | ||
| // instanceID -> posted instanceID | ||
| // metricArray -> the array of metrics to be returned | ||
| func (d *MetricDriver) CollectMetrics(metricsList []string, instanceID string) ([]*model.MetricSpec, error) { | ||
|
|
||
| // get Metrics to unit map | ||
| metricToUnitMap := getMetricToUnitMap() | ||
| //validate metric support list | ||
| supportedMetrics, err := d.ValidateMetricsSupportList(metricsList, "volume") | ||
| if supportedMetrics == nil { | ||
| log.Infof("No metrics found in the supported metric list") | ||
| } | ||
| metricMap, err := d.cli.CollectMetrics(supportedMetrics, instanceID) | ||
|
|
||
| var tempMetricArray []*model.MetricSpec | ||
| for _, element := range metricsList { | ||
| val, _ := strconv.ParseFloat(metricMap[element], 64) | ||
| //Todo: See if association is required here, resource discovery could fill this information | ||
| associatorMap := make(map[string]string) | ||
|
|
||
| metricValue := &model.Metric{ | ||
| Timestamp: getCurrentUnixTimestamp(), | ||
| Value: val, | ||
| } | ||
| metricValues := make([]*model.Metric, 0) | ||
| metricValues = append(metricValues, metricValue) | ||
|
|
||
| metric := &model.MetricSpec{ | ||
| InstanceID: instanceID, | ||
| InstanceName: metricMap["InstanceName"], | ||
| Job: "OpenSDS", | ||
| Associator: associatorMap, | ||
| Source: "Node", | ||
| //Todo Take Componet from Post call, as of now it is only for volume | ||
| Component: "Volume", | ||
| Name: element, | ||
| //Todo : Fill units according to metric type | ||
| Unit: metricToUnitMap[element], | ||
| //Todo : Get this information dynamically ( hard coded now , as all are direct values | ||
| IsAggregated: false, | ||
| MetricValues: metricValues, | ||
| } | ||
| tempMetricArray = append(tempMetricArray, metric) | ||
| } | ||
| metricArray := tempMetricArray | ||
| return metricArray, err | ||
| } | ||
|
|
||
| func (d *MetricDriver) Setup() error { | ||
|
|
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| cli, err := NewMetricCli() | ||
| if err != nil { | ||
| return err | ||
| } | ||
| d.cli = cli | ||
| return nil | ||
| } | ||
|
|
||
| func (*MetricDriver) Teardown() error { return nil } |
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