50 lines
1 KiB
Go
50 lines
1 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"io/ioutil"
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"strings"
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"syscall"
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)
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type promHandler struct {
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config envConfig
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}
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func newPromFileHandler(config envConfig) (*promHandler, error) {
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if !strings.HasSuffix(config.PrometheusConfigFilePath, ".json") {
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return nil, fmt.Errorf("file dose not have .json extension")
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}
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err := syscall.Access(config.PrometheusConfigFilePath, syscall.O_RDWR)
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if err != nil {
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return nil, err
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}
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handler := &promHandler{
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config: config,
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}
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return handler, nil
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}
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func (h *promHandler) write(containersScrapeConfig map[string]containerScrapeConfig) error {
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targetGroups := make([]containerScrapeConfig, 0, len(containersScrapeConfig))
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for _, v := range containersScrapeConfig {
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targetGroups = append(targetGroups, v)
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}
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data, err := json.Marshal(targetGroups)
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if err != nil {
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return err
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}
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log.Debugf("Write %s to %s", string(data), h.config.PrometheusConfigFilePath)
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err = ioutil.WriteFile(h.config.PrometheusConfigFilePath, data, 0644)
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if err != nil {
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return err
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}
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return err
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}
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