new silenced setting attributes addition

CHANGELOG-6.md

@@ -8,6 +8,11 @@ Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+### Added
+- Added `max-silenced-expiry-time-allowed` (in minutes) backend configuration variable to control maximum time an alert can be silenced.
+- Added `default-silenced-expiry-time` (in minutes) backend configuration variable to create silenced with a default expiry time if user doesn't set expiry time while creating an silence.
+
+
 ### Changed
 - Upgraded CI Go version to 1.21.3
 - Upgraded jwt version to 4.4.3

backend/apid/actions/error.go

@@ -52,6 +52,9 @@ const (
 	// the operation has completed successfully. For example, a successful
 	// response from a server could have been delayed long
 	DeadlineExceeded
+
+	// Threshold set in config reached. These settings are done in config of backend.yaml
+	ThresholdReached
 )
 
 // Default error messages if not message is provided.
@@ -65,6 +68,7 @@ var standardErrorMessages = map[ErrCode]string{
 	PaymentRequired:    "license required",
 	PreconditionFailed: "precondition failed",
 	DeadlineExceeded:   "deadline exceeded",
+	ThresholdReached:   "Threshold reached",
 }
 
 // Error describes an issue that ocurred while performing the action.

backend/apid/graphql/error.go

@@ -30,6 +30,8 @@ func newStdErr(input string, err error) stdErr {
 		out.code = schema.ErrCodes.ERR_ALREADY_EXISTS
 	case (*store.ErrNotFound):
 		out.code = schema.ErrCodes.ERR_NOT_FOUND
+	case (*store.ErrThreshold):
+		out.code = schema.ErrCodes.ERR_THRESHOLD_REACHED
 	}
 	return out
 }

backend/apid/graphql/schema/errors.graphql

@@ -51,4 +51,10 @@ enum ErrCode {
   permissions.
   """
   ERR_PERMISSION_DENIED
+
+  """
+  Indicates that set thresholds in configured have reached
+  """
+  ERR_THRESHOLD_REACHED
+
 }

backend/backend.go

@@ -328,6 +328,13 @@ func Initialize(ctx context.Context, config *Config) (*Backend, error) {
 
 	// Create the store, which lives on top of etcd
 	stor := etcdstore.NewStore(b.Client, config.EtcdName)
+
+	// set config details
+	scfg := etcdstore.Config{}
+	scfg.DefaultSilencedExpiryTime = config.DefaultSilencedExpiryTime
+	scfg.MaxSilencedExpiryTimeAllowed = config.MaxSilencedExpiryTimeAllowed
+	etcdstore.SetConfig(scfg, stor)
+
 	b.Store = stor
 	storv2 := etcdstorev2.NewStore(b.Client)
 	var storev2Proxy storev2.Proxy

backend/cmd/start.go

@@ -72,6 +72,10 @@ const (
 	flagLabels                = "labels"
 	flagAnnotations           = "annotations"
 
+	// silenced expiry flags
+	flagMaxSilencedExpiryTimeAllowed = "max-silenced-expiry-time-allowed"
+	flagDefaultSilencedExpiryTime    = "default-silenced-expiry-time"
+
 	// Etcd flag constants
 	flagEtcdClientURLs               = "etcd-client-urls"
 	flagEtcdListenClientURLs         = "etcd-listen-client-urls"
@@ -255,6 +259,9 @@ func StartCommand(initialize InitializeFunc) *cobra.Command {
 				CacheDir:              viper.GetString(flagCacheDir),
 				StateDir:              viper.GetString(flagStateDir),
 
+				DefaultSilencedExpiryTime:    viper.GetDuration(flagDefaultSilencedExpiryTime),
+				MaxSilencedExpiryTimeAllowed: viper.GetDuration(flagMaxSilencedExpiryTimeAllowed),
+
 				EtcdAdvertiseClientURLs:        viper.GetStringSlice(flagEtcdAdvertiseClientURLs),
 				EtcdListenClientURLs:           viper.GetStringSlice(flagEtcdListenClientURLs),
 				EtcdClientURLs:                 fallbackStringSlice(flagEtcdClientURLs, flagEtcdAdvertiseClientURLs),
@@ -448,6 +455,10 @@ func handleConfig(cmd *cobra.Command, arguments []string, server bool) error {
 		viper.SetDefault(flagEventLogBufferSize, 100000)
 		viper.SetDefault(flagEventLogFile, "")
 		viper.SetDefault(flagEventLogParallelEncoders, false)
+
+		// default silenced value are set for 1 day = 1440m
+		viper.SetDefault(flagMaxSilencedExpiryTimeAllowed, "1440m")
+		viper.SetDefault(flagDefaultSilencedExpiryTime, "1440m")
 	}
 
 	// Etcd defaults
@@ -583,6 +594,10 @@ func flagSet(server bool) *pflag.FlagSet {
 		flagSet.Duration(flagPlatformMetricsLoggingInterval, viper.GetDuration(flagPlatformMetricsLoggingInterval), "platform metrics logging interval")
 		flagSet.String(flagPlatformMetricsLogFile, viper.GetString(flagPlatformMetricsLogFile), "platform metrics log file path")
 
+		// silenced configuration flags
+		flagSet.Duration(flagDefaultSilencedExpiryTime, viper.GetDuration(flagDefaultSilencedExpiryTime), "Default expiry time for silenced if not set in minutes")
+		flagSet.Duration(flagMaxSilencedExpiryTimeAllowed, viper.GetDuration(flagMaxSilencedExpiryTimeAllowed), "Maximum expiry time allowed for silenced in minutes")
+
 		// Etcd server flags
 		flagSet.StringSlice(flagEtcdPeerURLs, viper.GetStringSlice(flagEtcdPeerURLs), "list of URLs to listen on for peer traffic")
 		_ = flagSet.SetAnnotation(flagEtcdPeerURLs, "categories", []string{"store"})

backend/config.go

@@ -132,4 +132,8 @@ type Config struct {
 	EventLogBufferWait       time.Duration
 	EventLogFile             string
 	EventLogParallelEncoders bool
+
+	// expiry setting for silences
+	DefaultSilencedExpiryTime    time.Duration
+	MaxSilencedExpiryTimeAllowed time.Duration
 }

backend/store/etcd/silenced_store.go

@@ -17,6 +17,7 @@ import (
 const (
 	silencedPathPrefix = "silenced"
 	maxTxnOps          = 64 // this is half of the etcd default maximum
+	silencedLimitError = "silenced crossed maximum duration allowed"
 )
 
 var (
@@ -207,13 +208,35 @@ func (s *Store) UpdateSilencedEntry(ctx context.Context, silenced *corev2.Silenc
 	if err := silenced.Validate(); err != nil {
 		return &store.ErrNotValid{Err: err}
 	}
+	allowedMaxTime := time.Now().Add(s.cfg.MaxSilencedExpiryTimeAllowed).Unix()
+
+	// check for maximum allowed duration for silenced allowed
+	if silenced.ExpireAt > 0 && (silenced.ExpireAt > allowedMaxTime) {
+		err := errors.New(silencedLimitError)
+		return &store.ErrThreshold{Err: err}
+	}
 
 	if silenced.ExpireAt == 0 && silenced.Expire > 0 {
 		start := time.Now()
 		if silenced.Begin > 0 {
 			start = time.Unix(silenced.Begin, 0)
 		}
 		silenced.ExpireAt = start.Add(time.Duration(silenced.Expire) * time.Second).Unix()
+
+		// check for maximum allowed duration for silenced allowed
+		if silenced.ExpireAt > allowedMaxTime {
+			err := errors.New(silencedLimitError)
+			return &store.ErrThreshold{Err: err}
+		}
+	}
+
+	// set default silenced expiry time configured in backend yaml file
+	if silenced.Expire <= 0 && silenced.ExpireAt == 0 {
+		start := time.Now()
+		if silenced.Begin > 0 {
+			start = time.Unix(silenced.Begin, 0)
+		}
+		silenced.ExpireAt = start.Add(s.cfg.DefaultSilencedExpiryTime).Unix()
 	}
 
 	silencedBytes, err := proto.Marshal(silenced)

backend/store/etcd/silenced_store_test.go

@@ -67,15 +67,17 @@ func TestSilencedStorage(t *testing.T) {
 		assert.NoError(t, err)
 		assert.NotNil(t, entry)
 		assert.Equal(t, "subscription:*", entry.Name)
-		// Entries without expirations should return -1
-		assert.Equal(t, int64(-1), entry.Expire)
+
+		// check entries without -1 expiry
+		assert.NotEqual(t, int64(-1), entry.Expire)
 
 		// Delete silenced entry by name
 		err = store.DeleteSilencedEntryByName(ctx, silenced.Name)
 		assert.NoError(t, err)
 
 		// Update a silenced entry's expire time
 		silenced.Expire = 2
+		silenced.ExpireAt = 0
 		err = store.UpdateSilencedEntry(ctx, silenced)
 		assert.NoError(t, err)
 
@@ -100,6 +102,7 @@ func TestSilencedStorageWithExpire(t *testing.T) {
 		silenced := types.FixtureSilenced("subscription:checkname")
 		silenced.Namespace = "default"
 		silenced.Expire = 15
+		silenced.ExpireAt = 0
 		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
 
 		err := store.UpdateSilencedEntry(ctx, silenced)
@@ -120,9 +123,9 @@ func TestSilencedStorageWithBegin(t *testing.T) {
 		silenced := types.FixtureSilenced("subscription:checkname")
 		silenced.Namespace = "default"
 		// set a begin time in the future
-		silenced.Begin = time.Date(1970, 01, 01, 01, 00, 00, 00, time.UTC).Unix()
+		silenced.Begin = time.Now().Add(time.Duration(1) * time.Second).Unix()
 		// current time is before the start time
-		currentTime := time.Date(1970, 01, 01, 00, 00, 00, 00, time.UTC).Unix()
+		currentTime := time.Now().Unix()
 		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
 
 		err := store.UpdateSilencedEntry(ctx, silenced)
@@ -137,8 +140,11 @@ func TestSilencedStorageWithBegin(t *testing.T) {
 		require.NotNil(t, entry)
 		assert.False(t, entry.Begin < currentTime)
 
+		// Wait for begin time to elapse current time. i.e let silencing begin
+		time.Sleep(3 * time.Second)
+
 		// reset current time to be ahead of begin time
-		currentTime = time.Date(1970, 01, 01, 02, 00, 00, 00, time.UTC).Unix()
+		currentTime = time.Now().Unix()
 		assert.True(t, entry.Begin < currentTime)
 	})
 }
@@ -150,7 +156,7 @@ func TestSilencedStorageWithBeginAndExpire(t *testing.T) {
 		silenced.Expire = 15
 		currentTime := time.Now().UTC().Unix()
 		// set a begin time in the future
-		silenced.Begin = currentTime + 3600
+		silenced.Begin = currentTime + 100
 		// current time is before the start time
 		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
 
@@ -168,3 +174,72 @@ func TestSilencedStorageWithBeginAndExpire(t *testing.T) {
 		assert.Equal(t, entry.Expire, int64(15))
 	})
 }
+
+func TestSilencedStorageWithMaxAllowedThresholdExpiry(t *testing.T) {
+	testWithEtcd(t, func(store store.Store) {
+		silenced := types.FixtureSilenced("subscription:checkname")
+		silenced.Namespace = "default"
+		silenced.ExpireAt = time.Now().Add(time.Duration(30000) * time.Second).Unix()
+		// set a begin time
+		silenced.Begin = time.Now().Unix()
+		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
+
+		err := store.UpdateSilencedEntry(ctx, silenced)
+
+		// assert that error is thrown for breaching max expiry time allowed
+		assert.Error(t, err)
+
+		entry, err := store.GetSilencedEntryByName(ctx, silenced.Name)
+
+		// assert that entry is nil
+		assert.NoError(t, err)
+		assert.Nil(t, entry)
+
+	})
+}
+
+func TestSilencedStorageWithMaxAllowedThresholdExpiryWithError(t *testing.T) {
+	testWithEtcd(t, func(store store.Store) {
+		silenced := types.FixtureSilenced("subscription:checkname")
+		silenced.Namespace = "default"
+		silenced.ExpireAt = 0
+		silenced.Expire = 3001
+		silenced.Begin = time.Now().Unix()
+		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
+
+		err := store.UpdateSilencedEntry(ctx, silenced)
+
+		// assert that error is thrown for breaching max expiry time allowed
+		assert.Error(t, err)
+
+		entry, err := store.GetSilencedEntryByName(ctx, silenced.Name)
+
+		// assert that entry is nil
+		assert.NoError(t, err)
+		assert.Nil(t, entry)
+
+	})
+}
+
+func TestSilencedStorageWithMaxAllowedThresholdExpiryAndWithoutError(t *testing.T) {
+	testWithEtcd(t, func(store store.Store) {
+		silenced := types.FixtureSilenced("subscription:checkname")
+		silenced.Namespace = "default"
+		silenced.ExpireAt = 0
+		silenced.Expire = 100
+		silenced.Begin = time.Now().Unix()
+		ctx := context.WithValue(context.Background(), types.NamespaceKey, silenced.Namespace)
+
+		err := store.UpdateSilencedEntry(ctx, silenced)
+
+		// assert that error is nil
+		assert.Nil(t, err)
+
+		entry, err := store.GetSilencedEntryByName(ctx, silenced.Name)
+
+		// assert that entry is not nil
+		assert.NoError(t, err)
+		assert.NotNil(t, entry)
+
+	})
+}

backend/store/etcd/store.go

@@ -7,6 +7,7 @@ import (
 	"path"
 	"reflect"
 	"strings"
+	"time"
 
 	"github.com/gogo/protobuf/proto"
 	"github.com/sensu/sensu-go/backend/store"
@@ -22,10 +23,16 @@ const (
 	EtcdRoot = "/sensu.io"
 )
 
+type Config struct {
+	DefaultSilencedExpiryTime    time.Duration
+	MaxSilencedExpiryTimeAllowed time.Duration
+}
+
 // Store is an implementation of the sensu-go/backend/store.Store iface.
 type Store struct {
 	client         *clientv3.Client
 	keepalivesPath string
+	cfg            Config
 }
 
 // NewStore creates a new Store.
@@ -38,6 +45,11 @@ func NewStore(client *clientv3.Client, name string) *Store {
 	return store
 }
 
+// SetConfig adds Store configurations
+func SetConfig(cfg Config, store *Store) {
+	store.cfg = cfg
+}
+
 // Create the given key with the serialized object.
 func Create(ctx context.Context, client *clientv3.Client, key, namespace string, object interface{}) error {
 	bytes, err := marshal(object)

backend/store/etcd/store_test.go

@@ -8,6 +8,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/gogo/protobuf/proto"
 	corev2 "github.com/sensu/core/v2"
@@ -28,6 +29,9 @@ func testWithEtcd(t *testing.T, f func(store.Store)) {
 
 	s := NewStore(client, e.Name())
 
+	s.cfg.MaxSilencedExpiryTimeAllowed = time.Duration(3000 * time.Second)
+	s.cfg.DefaultSilencedExpiryTime = time.Duration(3000 * time.Second)
+
 	// Mock a default namespace
 	require.NoError(t, s.CreateNamespace(context.Background(), types.FixtureNamespace("default")))
 
@@ -42,6 +46,9 @@ func testWithEtcdStore(t *testing.T, f func(*Store)) {
 
 	s := NewStore(client, e.Name())
 
+	s.cfg.MaxSilencedExpiryTimeAllowed = time.Duration(3000 * time.Second)
+	s.cfg.DefaultSilencedExpiryTime = time.Duration(3000 * time.Second)
+
 	// Mock a default namespace
 	require.NoError(t, s.CreateNamespace(context.Background(), types.FixtureNamespace("default")))
 
@@ -56,6 +63,9 @@ func testWithEtcdClient(t *testing.T, f func(store.Store, *clientv3.Client)) {
 
 	s := NewStore(client, e.Name())
 
+	s.cfg.MaxSilencedExpiryTimeAllowed = time.Duration(3000 * time.Second)
+	s.cfg.DefaultSilencedExpiryTime = time.Duration(3000 * time.Second)
+
 	// Mock a default namespace
 	require.NoError(t, s.CreateNamespace(context.Background(), types.FixtureNamespace("default")))