func RemoveRegexFromRelabelAction()

in otelcollector/otel-allocator/internal/server/server.go [140:177]
33 lines of code
12 McCabe index (conditional complexity)

func RemoveRegexFromRelabelAction(jsonConfig []byte) ([]byte, error) {
	var jobToScrapeConfig map[string]interface{}
	err := json.Unmarshal(jsonConfig, &jobToScrapeConfig)
	if err != nil {
		return nil, err
	}
	for _, scrapeConfig := range jobToScrapeConfig {
		scrapeConfig := scrapeConfig.(map[string]interface{})
		if scrapeConfig["relabel_configs"] != nil {
			relabelConfigs := scrapeConfig["relabel_configs"].([]interface{})
			for _, relabelConfig := range relabelConfigs {
				relabelConfig := relabelConfig.(map[string]interface{})
				// Dropping regex key from the map since unmarshalling this on the client(metrics_receiver.go) results in error
				// because of the bug here - https://github.com/prometheus/prometheus/issues/12534
				if relabelConfig["action"] == "keepequal" || relabelConfig["action"] == "dropequal" {
					delete(relabelConfig, "regex")
				}
			}
		}
		if scrapeConfig["metric_relabel_configs"] != nil {
			metricRelabelConfigs := scrapeConfig["metric_relabel_configs"].([]interface{})
			for _, metricRelabelConfig := range metricRelabelConfigs {
				metricRelabelConfig := metricRelabelConfig.(map[string]interface{})
				// Dropping regex key from the map since unmarshalling this on the client(metrics_receiver.go) results in error
				// because of the bug here - https://github.com/prometheus/prometheus/issues/12534
				if metricRelabelConfig["action"] == "keepequal" || metricRelabelConfig["action"] == "dropequal" {
					delete(metricRelabelConfig, "regex")
				}
			}
		}
	}

	jsonConfigNew, err := json.Marshal(jobToScrapeConfig)
	if err != nil {
		return nil, err
	}
	return jsonConfigNew, nil
}