esctl/pkg/es/cluser_health_report.go

/*
Copyright © 2026 Thomas von Dein

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package es

import (

	// "encoding/json/jsontext"
	// "encoding/json/v2"

	"encoding/json"
	"fmt"

	"codeberg.org/scip/esctl/pkg/cfg"
)

type HealthReport struct {
	Indicators map[string]HealthReportIndicator
}

type HealthReportIndicator struct {
	Status, Symptom string
	Diagnosis       []HealthReportDiagnosis
}

type HealthReportDiagnosis struct {
	Id, Cause, Action string
	AffectedResources map[string][]string `json:"affected_resources"`
}

// we do not use the go-elasticsearch  client API here but call the ES
// API    directly,     because    the    returned     structure    (a
// healthreport.Response) is  not iterable,  you'd have  to explicitly
// call  every indicator  type and  every  cause etc  which also  have
// different types  each. To check which  is !green would result  in a
// gigantic function.
func getHealthReport(conf *cfg.Config) (*HealthReport, error) {
	raw, err := CallAPI(conf, "GET", "/_health_report", "")
	if err != nil {
		return nil, err
	}

	report := new(HealthReport{})

	// FIXME: use this once jsonv2  is no more experimental it already
	//  builds  and works  like  intended,  but golangci-lint  doesn't
	// recognize it with: go: unknown GOEXPERIMENT jsonv2
	//
	// if err := json.UnmarshalDecode(
	// 	jsontext.NewDecoder(
	// 		bytes.NewBuffer(raw)),
	// 	&report); err != nil {
	// 	return nil, fmt.Errorf("failed to unmarshal healthreport response: %w", err)
	// }

	if err := json.Unmarshal(raw, &report); err != nil {
		return nil, fmt.Errorf("failed to unmarshal healthreport response: %w", err)
	}

	return report, nil
}