Example for the docs as an Sloth SLO plugin remote retrieval

sloth-slo-plugin.go

package plugin

import (
	"context"
	"encoding/json"

	"github.com/slok/sloth/pkg/common/conventions"
	utilsdata "github.com/slok/sloth/pkg/common/utils/data"
	pluginslov1 "github.com/slok/sloth/pkg/prometheus/plugin/slo/v1"
)

const (
	PluginVersion = "prometheus/slo/v1"
	PluginID      = "sloth-examples/add_description_to_info/v1"
)

func NewPlugin(_ json.RawMessage, _ pluginslov1.AppUtils) (pluginslov1.Plugin, error) {
	return plugin{}, nil
}

type plugin struct{}

func (p plugin) ProcessSLO(ctx context.Context, request *pluginslov1.Request, result *pluginslov1.Result) error {
	// Search for info metric and add description label.
	for i, r := range result.SLORules.MetadataRecRules.Rules {
		if r.Record == conventions.PromMetaSLOInfoMetric {
			r.Labels = utilsdata.MergeLabels(r.Labels, map[string]string{"description": request.SLO.Description})
			result.SLORules.MetadataRecRules.Rules[i] = r
			break
		}
	}

	return nil
}