94 lines
1.8 KiB
Go
94 lines
1.8 KiB
Go
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package prometheus_sd
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import (
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"errors"
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"yanic/output"
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"yanic/runtime"
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)
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type Output struct {
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output.Output
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path string
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targetType TargetAddressType
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labels map[string]interface{}
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}
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type Config map[string]interface{}
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func (c Config) Path() string {
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if path, ok := c["path"]; ok {
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return path.(string)
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}
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return ""
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}
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type TargetAddressType string
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const (
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TargetAddressIP TargetAddressType = "ip"
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TargetAddressNodeID TargetAddressType = "node_id"
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)
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func (c Config) TargetAddress() TargetAddressType {
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if v, ok := c["target_address"]; ok {
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return TargetAddressType(v.(string))
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}
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return TargetAddressIP
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}
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func (c Config) Labels() map[string]interface{} {
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if v, ok := c["labels"]; ok {
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return v.(map[string]interface{})
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}
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return nil
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}
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func init() {
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output.RegisterAdapter("prometheus-sd", Register)
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}
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func Register(configuration map[string]interface{}) (output.Output, error) {
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config := Config(configuration)
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if path := config.Path(); path != "" {
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return &Output{
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path: path,
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targetType: config.TargetAddress(),
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labels: config.Labels(),
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}, nil
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}
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return nil, errors.New("no path given")
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}
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type Targets struct {
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Targets []string `json:"targets"`
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Labels map[string]interface{} `json:"labels,omitempty"`
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}
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func (o *Output) Save(nodes *runtime.Nodes) {
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nodes.RLock()
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defer nodes.RUnlock()
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targets := &Targets{
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Targets: []string{},
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Labels: o.labels,
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}
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if o.targetType == TargetAddressNodeID {
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for _, n := range nodes.List {
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if ni := n.Nodeinfo; ni != nil {
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targets.Targets = append(targets.Targets, ni.NodeID)
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}
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}
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} else {
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for _, n := range nodes.List {
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if addr := n.Address; addr != nil {
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targets.Targets = append(targets.Targets, addr.IP.String())
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}
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}
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}
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runtime.SaveJSON([]interface{}{targets}, o.path)
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}
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