Function runtimeConfigHandler

pkg/cortex/runtime_config.go:132–176

(runtimeCfgManager *runtimeconfig.Manager, defaultLimits validation.Limits)

}

func runtimeConfigHandler(runtimeCfgManager *runtimeconfig.Manager, defaultLimits validation.Limits) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {
		cfg, ok := runtimeCfgManager.GetConfig().(*RuntimeConfigValues)
		if !ok || cfg == nil {
			util.WriteTextResponse(w, "runtime config file doesn't exist")
			return
		}

		var output any
		switch r.URL.Query().Get("mode") {
		case "diff":
			// Default runtime config is just empty struct, but to make diff work,
			// we set defaultLimits for every tenant that exists in runtime config.
			defaultCfg := RuntimeConfigValues{}
			defaultCfg.TenantLimits = map[string]*validation.Limits{}
			for k, v := range cfg.TenantLimits {
				if v != nil {
					defaultCfg.TenantLimits[k] = &defaultLimits
				}
			}

			cfgYaml, err := util.YAMLMarshalUnmarshal(cfg)
			if err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}

			defaultCfgYaml, err := util.YAMLMarshalUnmarshal(defaultCfg)
			if err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}

			output, err = util.DiffConfig(defaultCfgYaml, cfgYaml)
			if err != nil {
				http.Error(w, err.Error(), http.StatusInternalServerError)
				return
			}

		default:
			output = cfg
		}
		util.WriteYAMLResponse(w, output)
	}
}