forked from flashcat/categraf
128 lines
2.9 KiB
Go
128 lines
2.9 KiB
Go
package jolokia_agent
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import (
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"fmt"
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"log"
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"sync"
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"time"
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"flashcat.cloud/categraf/config"
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"flashcat.cloud/categraf/inputs"
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"flashcat.cloud/categraf/inputs/jolokia"
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"flashcat.cloud/categraf/pkg/tls"
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"flashcat.cloud/categraf/types"
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)
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const inputName = "jolokia_agent"
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type JolokiaAgent struct {
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config.PluginConfig
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Instances []*Instance `toml:"instances"`
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}
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func init() {
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inputs.Add(inputName, func() inputs.Input {
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return &JolokiaAgent{}
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})
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}
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func (r *JolokiaAgent) Clone() inputs.Input {
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return &JolokiaAgent{}
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}
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func (r *JolokiaAgent) Name() string {
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return inputName
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}
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func (r *JolokiaAgent) GetInstances() []inputs.Instance {
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ret := make([]inputs.Instance, len(r.Instances))
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for i := 0; i < len(r.Instances); i++ {
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ret[i] = r.Instances[i]
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}
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return ret
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}
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type Instance struct {
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config.InstanceConfig
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URLs []string `toml:"urls"`
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Username string `toml:"username"`
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Password string `toml:"password"`
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ResponseTimeout config.Duration `toml:"response_timeout"`
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Metrics []jolokia.MetricConfig `toml:"metric"`
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DefaultTagPrefix string `toml:"default_tag_prefix"`
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DefaultFieldPrefix string `toml:"default_field_prefix"`
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DefaultFieldSeparator string `toml:"default_field_separator"`
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tls.ClientConfig
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clients []*jolokia.Client
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gatherer *jolokia.Gatherer
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}
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func (ins *Instance) Init() error {
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if len(ins.URLs) == 0 {
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return types.ErrInstancesEmpty
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}
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if ins.DefaultFieldSeparator == "" {
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ins.DefaultFieldSeparator = "_"
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}
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return nil
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}
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func (ins *Instance) Gather(slist *types.SampleList) {
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if ins.gatherer == nil {
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ins.gatherer = jolokia.NewGatherer(ins.createMetrics())
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}
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if ins.clients == nil {
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ins.clients = make([]*jolokia.Client, 0, len(ins.URLs))
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for _, url := range ins.URLs {
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client, err := ins.createClient(url)
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if err != nil {
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log.Println("E! failed to create client:", err)
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continue
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}
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ins.clients = append(ins.clients, client)
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}
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}
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var wg sync.WaitGroup
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for _, client := range ins.clients {
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wg.Add(1)
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go func(client *jolokia.Client) {
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defer wg.Done()
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err := ins.gatherer.Gather(client, slist)
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if err != nil {
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log.Println("E!", fmt.Errorf("unable to gather metrics for %s: %v", client.URL, err))
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}
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}(client)
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}
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wg.Wait()
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}
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func (ins *Instance) createMetrics() []jolokia.Metric {
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var metrics []jolokia.Metric
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for _, metricConfig := range ins.Metrics {
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metrics = append(metrics, jolokia.NewMetric(metricConfig,
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ins.DefaultFieldPrefix, ins.DefaultFieldSeparator, ins.DefaultTagPrefix))
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}
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return metrics
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}
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func (ins *Instance) createClient(url string) (*jolokia.Client, error) {
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return jolokia.NewClient(url, &jolokia.ClientConfig{
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Username: ins.Username,
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Password: ins.Password,
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ResponseTimeout: time.Duration(ins.ResponseTimeout),
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ClientConfig: ins.ClientConfig,
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})
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}
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