Update cortex to use runtime config from dskit (cortexproject#4440)

* Update cortex to use runtime config from dskit

Signed-off-by: Tyler Reid <tyler.reid@grafana.com>

* Add cortex prefix to generic metrics from dskit

Signed-off-by: Tyler Reid <tyler.reid@grafana.com>

pkg/cortex/cortex.go

@@ -13,6 +13,7 @@ import (
 	"github.com/go-kit/kit/log"
 	"github.com/go-kit/kit/log/level"
 	"github.com/grafana/dskit/modules"
+	"github.com/grafana/dskit/runtimeconfig"
 	"github.com/grafana/dskit/services"
 	"github.com/pkg/errors"
 	"github.com/prometheus/client_golang/prometheus"
@@ -60,7 +61,6 @@ import (
 	"github.com/cortexproject/cortex/pkg/util/grpc/healthcheck"
 	util_log "github.com/cortexproject/cortex/pkg/util/log"
 	"github.com/cortexproject/cortex/pkg/util/process"
-	"github.com/cortexproject/cortex/pkg/util/runtimeconfig"
 	"github.com/cortexproject/cortex/pkg/util/validation"
 )
 
@@ -120,7 +120,7 @@ type Config struct {
 	Configs             configs.Config                             `yaml:"configs"`
 	Alertmanager        alertmanager.MultitenantAlertmanagerConfig `yaml:"alertmanager"`
 	AlertmanagerStorage alertstore.Config                          `yaml:"alertmanager_storage"`
-	RuntimeConfig       runtimeconfig.ManagerConfig                `yaml:"runtime_config"`
+	RuntimeConfig       runtimeconfig.Config                       `yaml:"runtime_config"`
 	MemberlistKV        memberlist.KVConfig                        `yaml:"memberlist"`
 	QueryScheduler      scheduler.Config                           `yaml:"query_scheduler"`
 }

pkg/cortex/modules.go

@@ -10,6 +10,7 @@ import (
 
 	"github.com/go-kit/kit/log/level"
 	"github.com/grafana/dskit/modules"
+	"github.com/grafana/dskit/runtimeconfig"
 	"github.com/grafana/dskit/services"
 	"github.com/opentracing-contrib/go-stdlib/nethttp"
 	"github.com/opentracing/opentracing-go"
@@ -32,7 +33,7 @@ import (
 	"github.com/cortexproject/cortex/pkg/configs/db"
 	"github.com/cortexproject/cortex/pkg/distributor"
 	"github.com/cortexproject/cortex/pkg/flusher"
-	frontend "github.com/cortexproject/cortex/pkg/frontend"
+	"github.com/cortexproject/cortex/pkg/frontend"
 	"github.com/cortexproject/cortex/pkg/frontend/transport"
 	"github.com/cortexproject/cortex/pkg/ingester"
 	"github.com/cortexproject/cortex/pkg/querier"
@@ -46,7 +47,6 @@ import (
 	"github.com/cortexproject/cortex/pkg/scheduler"
 	"github.com/cortexproject/cortex/pkg/storegateway"
 	util_log "github.com/cortexproject/cortex/pkg/util/log"
-	"github.com/cortexproject/cortex/pkg/util/runtimeconfig"
 	"github.com/cortexproject/cortex/pkg/util/validation"
 )
 
@@ -157,7 +157,7 @@ func (t *Cortex) initRuntimeConfig() (services.Service, error) {
 	// make sure to set default limits before we start loading configuration into memory
 	validation.SetDefaultLimitsForYAMLUnmarshalling(t.Cfg.LimitsConfig)
 
-	serv, err := runtimeconfig.NewRuntimeConfigManager(t.Cfg.RuntimeConfig, prometheus.DefaultRegisterer)
+	serv, err := runtimeconfig.New(t.Cfg.RuntimeConfig, prometheus.WrapRegistererWithPrefix("cortex_", prometheus.DefaultRegisterer), util_log.Logger)
 	if err == nil {
 		// TenantLimits just delegates to RuntimeConfig and doesn't have any state or need to do
 		// anything in the start/stopping phase. Thus we can create it as part of runtime config

pkg/cortex/runtime_config.go

@@ -5,12 +5,12 @@ import (
 	"io"
 	"net/http"
 
+	"github.com/grafana/dskit/runtimeconfig"
 	"gopkg.in/yaml.v2"
 
 	"github.com/cortexproject/cortex/pkg/ingester"
 	"github.com/cortexproject/cortex/pkg/ring/kv"
 	"github.com/cortexproject/cortex/pkg/util"
-	"github.com/cortexproject/cortex/pkg/util/runtimeconfig"
 	"github.com/cortexproject/cortex/pkg/util/validation"
 )