[jaeger-v2] Consolidate Options And NamespaceConfig For Badger Storage (

#5937)

## Which problem is this PR solving?
- Part of #5926

## Description of the changes
- Removed the `Options` struct and renamed `NamespaceConfig` to
`Namespace` for Badger Storage
- Moved v2-related configuration items to `config.go` while leaving v1
cli flags in `options.go`

## How was this change tested?
- CI

## Checklist
- [x] I have read
https://github.com/jaegertracing/jaeger/blob/master/CONTRIBUTING_GUIDELINES.md
- [x] I have signed all commits
- [x] I have added unit tests for the new functionality
- [x] I have run lint and test steps successfully
  - for `jaeger`: `make lint test`
  - for `jaeger-ui`: `yarn lint` and `yarn test`

---------

Signed-off-by: Mahad Zaryab <mahadzaryab1@gmail.com>

cmd/jaeger/internal/extension/jaegerstorage/config.go

@@ -39,12 +39,12 @@ type Config struct {
 }
 
 type Backend struct {
-	Memory        *memory.Configuration   `mapstructure:"memory"`
-	Badger        *badger.NamespaceConfig `mapstructure:"badger"`
-	GRPC          *grpc.ConfigV2          `mapstructure:"grpc"`
-	Cassandra     *cassandra.Options      `mapstructure:"cassandra"`
-	Elasticsearch *esCfg.Configuration    `mapstructure:"elasticsearch"`
-	Opensearch    *esCfg.Configuration    `mapstructure:"opensearch"`
+	Memory        *memory.Configuration `mapstructure:"memory"`
+	Badger        *badger.Config        `mapstructure:"badger"`
+	GRPC          *grpc.ConfigV2        `mapstructure:"grpc"`
+	Cassandra     *cassandra.Options    `mapstructure:"cassandra"`
+	Elasticsearch *esCfg.Configuration  `mapstructure:"elasticsearch"`
+	Opensearch    *esCfg.Configuration  `mapstructure:"opensearch"`
 }
 
 type MetricBackends struct {
@@ -62,8 +62,8 @@ func (cfg *Backend) Unmarshal(conf *confmap.Conf) error {
 		}
 	}
 	if conf.IsSet("badger") {
-		v := badger.DefaultNamespaceConfig()
-		cfg.Badger = &v
+		v := badger.DefaultConfig()
+		cfg.Badger = v
 	}
 	if conf.IsSet("grpc") {
 		v := grpc.DefaultConfigV2()

cmd/jaeger/internal/extension/jaegerstorage/extension_test.go

@@ -123,7 +123,7 @@ func TestBadger(t *testing.T) {
 	ext := makeStorageExtenion(t, &Config{
 		Backends: map[string]Backend{
 			"foo": {
-				Badger: &badger.NamespaceConfig{
+				Badger: &badger.Config{
 					Ephemeral:             true,
 					MaintenanceInterval:   5,
 					MetricsUpdateInterval: 10,

plugin/storage/badger/config.go

@@ -0,0 +1,87 @@
+// Copyright (c) 2024 The Jaeger Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package badger
+
+import (
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/asaskevich/govalidator"
+)
+
+const (
+	defaultMaintenanceInterval   time.Duration = 5 * time.Minute
+	defaultMetricsUpdateInterval time.Duration = 10 * time.Second
+	defaultTTL                   time.Duration = time.Hour * 72
+	defaultDataDir               string        = string(os.PathSeparator) + "data"
+	defaultValueDir              string        = defaultDataDir + string(os.PathSeparator) + "values"
+	defaultKeysDir               string        = defaultDataDir + string(os.PathSeparator) + "keys"
+)
+
+// Config is badger's internal configuration data.
+type Config struct {
+	// TTL holds time-to-live configuration for the badger store.
+	TTL TTL `mapstructure:"ttl"`
+	// Directories contains the configuration for where items are stored. Ephemeral must be
+	// set to false for this configuration to take effect.
+	Directories Directories `mapstructure:"directories"`
+	// Ephemeral, if set to true, will store data in a temporary file system.
+	// If set to true, the configuration in Directories is ignored.
+	Ephemeral bool `mapstructure:"ephemeral"`
+	// SyncWrites, if set to true, will immediately sync all writes to disk. Note that
+	// setting this field to true will affect write performance.
+	SyncWrites bool `mapstructure:"consistency"`
+	// MaintenanceInterval is the regular interval after which a maintenance job is
+	// run on the values in the store.
+	MaintenanceInterval time.Duration `mapstructure:"maintenance_interval"`
+	// MetricsUpdateInterval is the regular interval after which metrics are collected
+	// by Jaeger.
+	MetricsUpdateInterval time.Duration `mapstructure:"metrics_update_interval"`
+	// ReadOnly opens the data store in read-only mode. Multiple instances can open the same
+	// store in read-only mode. Values still in the write-ahead-log must be replayed before opening.
+	ReadOnly bool `mapstructure:"read_only"`
+}
+
+type TTL struct {
+	// SpanStore holds the amount of time that the span store data is stored.
+	// Once this duration has passed for a given key, span store data will
+	// no longer be accessible.
+	Spans time.Duration `mapstructure:"spans"`
+}
+
+type Directories struct {
+	// Keys contains the directory in which the keys are stored.
+	Keys string `mapstructure:"keys"`
+	// Values contains the directory in which the values are stored.
+	Values string `mapstructure:"values"`
+}
+
+func DefaultConfig() *Config {
+	defaultBadgerDataDir := getCurrentExecutableDir()
+	return &Config{
+		TTL: TTL{
+			Spans: defaultTTL,
+		},
+		SyncWrites: false, // Performance over durability
+		Ephemeral:  true,  // Default is ephemeral storage
+		Directories: Directories{
+			Keys:   defaultBadgerDataDir + defaultKeysDir,
+			Values: defaultBadgerDataDir + defaultValueDir,
+		},
+		MaintenanceInterval:   defaultMaintenanceInterval,
+		MetricsUpdateInterval: defaultMetricsUpdateInterval,
+	}
+}
+
+func getCurrentExecutableDir() string {
+	// We ignore the error, this will fail later when trying to start the store
+	exec, _ := os.Executable()
+	return filepath.Dir(exec)
+}
+
+func (c *Config) Validate() error {
+	_, err := govalidator.ValidateStruct(c)
+	return err
+}

plugin/storage/badger/config_test.go

@@ -0,0 +1,47 @@
+// Copyright (c) 2024 The Jaeger Authors.
+// SPDX-License-Identifier: Apache-2.0
+
+package badger
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestValidate_DoesNotReturnErrorWhenValid(t *testing.T) {
+	tests := []struct {
+		name string
+		cfg  *Config
+	}{
+		{
+			name: "non-required fields not set",
+			cfg:  &Config{},
+		},
+		{
+			name: "all fields are set",
+			cfg: &Config{
+				TTL: TTL{
+					Spans: time.Second,
+				},
+				Directories: Directories{
+					Keys:   "some-key-directory",
+					Values: "some-values-directory",
+				},
+				Ephemeral:             false,
+				SyncWrites:            false,
+				MaintenanceInterval:   time.Second,
+				MetricsUpdateInterval: time.Second,
+				ReadOnly:              false,
+			},
+		},
+	}
+
+	for _, test := range tests {
+		t.Run(test.name, func(t *testing.T) {
+			err := test.cfg.Validate()
+			require.NoError(t, err)
+		})
+	}
+}

plugin/storage/badger/dependencystore/storage_test.go

@@ -28,8 +28,8 @@ func runFactoryTest(tb testing.TB, test func(tb testing.TB, sw spanstore.Writer,
 		require.NoError(tb, f.Close())
 	}()
 
-	opts := badger.NewOptions()
-	v, command := config.Viperize(opts.AddFlags)
+	cfg := badger.DefaultConfig()
+	v, command := config.Viperize(cfg.AddFlags)
 	command.ParseFlags([]string{
 		"--badger.ephemeral=true",
 		"--badger.consistency=false",

plugin/storage/badger/factory.go

@@ -50,10 +50,10 @@ var ( // interface comformance checks
 
 // Factory implements storage.Factory for Badger backend.
 type Factory struct {
-	Options *Options
-	store   *badger.DB
-	cache   *badgerStore.CacheStore
-	logger  *zap.Logger
+	Config *Config
+	store  *badger.DB
+	cache  *badgerStore.CacheStore
+	logger *zap.Logger
 
 	tmpDir          string
 	maintenanceDone chan bool
@@ -77,18 +77,18 @@ type Factory struct {
 // NewFactory creates a new Factory.
 func NewFactory() *Factory {
 	return &Factory{
-		Options:         NewOptions(),
+		Config:          DefaultConfig(),
 		maintenanceDone: make(chan bool),
 	}
 }
 
 func NewFactoryWithConfig(
-	cfg NamespaceConfig,
+	cfg Config,
 	metricsFactory metrics.Factory,
 	logger *zap.Logger,
 ) (*Factory, error) {
 	f := NewFactory()
-	f.configureFromOptions(&Options{Primary: cfg})
+	f.configure(&cfg)
 	err := f.Initialize(metricsFactory, logger)
 	if err != nil {
 		return nil, err
@@ -98,18 +98,18 @@ func NewFactoryWithConfig(
 
 // AddFlags implements plugin.Configurable
 func (f *Factory) AddFlags(flagSet *flag.FlagSet) {
-	f.Options.AddFlags(flagSet)
+	f.Config.AddFlags(flagSet)
 }
 
 // InitFromViper implements plugin.Configurable
 func (f *Factory) InitFromViper(v *viper.Viper, logger *zap.Logger) {
-	f.Options.InitFromViper(v, logger)
-	f.configureFromOptions(f.Options)
+	f.Config.InitFromViper(v, logger)
+	f.configure(f.Config)
 }
 
-// InitFromOptions initializes Factory from supplied options
-func (f *Factory) configureFromOptions(opts *Options) {
-	f.Options = opts
+// configure initializes Factory from supplied Config.
+func (f *Factory) configure(config *Config) {
+	f.Config = config
 }
 
 // Initialize implements storage.Factory
@@ -118,27 +118,27 @@ func (f *Factory) Initialize(metricsFactory metrics.Factory, logger *zap.Logger)
 
 	opts := badger.DefaultOptions("")
 
-	if f.Options.Primary.Ephemeral {
+	if f.Config.Ephemeral {
 		opts.SyncWrites = false
 		// Error from TempDir is ignored to satisfy Codecov
 		dir, _ := os.MkdirTemp("", "badger")
 		f.tmpDir = dir
 		opts.Dir = f.tmpDir
 		opts.ValueDir = f.tmpDir
 
-		f.Options.Primary.Directories.Keys = f.tmpDir
-		f.Options.Primary.Directories.Values = f.tmpDir
+		f.Config.Directories.Keys = f.tmpDir
+		f.Config.Directories.Values = f.tmpDir
 	} else {
 		// Errors are ignored as they're caught in the Open call
-		initializeDir(f.Options.Primary.Directories.Keys)
-		initializeDir(f.Options.Primary.Directories.Values)
+		initializeDir(f.Config.Directories.Keys)
+		initializeDir(f.Config.Directories.Values)
 
-		opts.SyncWrites = f.Options.Primary.SyncWrites
-		opts.Dir = f.Options.Primary.Directories.Keys
-		opts.ValueDir = f.Options.Primary.Directories.Values
+		opts.SyncWrites = f.Config.SyncWrites
+		opts.Dir = f.Config.Directories.Keys
+		opts.ValueDir = f.Config.Directories.Values
 
 		// These options make no sense with ephemeral data
-		opts.ReadOnly = f.Options.Primary.ReadOnly
+		opts.ReadOnly = f.Config.ReadOnly
 	}
 
 	store, err := badger.Open(opts)
@@ -147,7 +147,7 @@ func (f *Factory) Initialize(metricsFactory metrics.Factory, logger *zap.Logger)
 	}
 	f.store = store
 
-	f.cache = badgerStore.NewCacheStore(f.store, f.Options.Primary.TTL.Spans, true)
+	f.cache = badgerStore.NewCacheStore(f.store, f.Config.TTL.Spans, true)
 
 	f.metrics.ValueLogSpaceAvailable = metricsFactory.Gauge(metrics.Options{Name: valueLogSpaceAvailableName})
 	f.metrics.KeyLogSpaceAvailable = metricsFactory.Gauge(metrics.Options{Name: keyLogSpaceAvailableName})
@@ -178,7 +178,7 @@ func (f *Factory) CreateSpanReader() (spanstore.Reader, error) {
 
 // CreateSpanWriter implements storage.Factory
 func (f *Factory) CreateSpanWriter() (spanstore.Writer, error) {
-	return badgerStore.NewSpanWriter(f.store, f.cache, f.Options.Primary.TTL.Spans), nil
+	return badgerStore.NewSpanWriter(f.store, f.cache, f.Config.TTL.Spans), nil
 }
 
 // CreateDependencyReader implements storage.Factory
@@ -206,7 +206,7 @@ func (f *Factory) Close() error {
 	err := f.store.Close()
 
 	// Remove tmp files if this was ephemeral storage
-	if f.Options.Primary.Ephemeral {
+	if f.Config.Ephemeral {
 		errSecondary := os.RemoveAll(f.tmpDir)
 		if err == nil {
 			err = errSecondary
@@ -218,7 +218,7 @@ func (f *Factory) Close() error {
 
 // Maintenance starts a background maintenance job for the badger K/V store, such as ValueLogGC
 func (f *Factory) maintenance() {
-	maintenanceTicker := time.NewTicker(f.Options.Primary.MaintenanceInterval)
+	maintenanceTicker := time.NewTicker(f.Config.MaintenanceInterval)
 	defer maintenanceTicker.Stop()
 	for {
 		select {
@@ -244,7 +244,7 @@ func (f *Factory) maintenance() {
 }
 
 func (f *Factory) metricsCopier() {
-	metricsTicker := time.NewTicker(f.Options.Primary.MetricsUpdateInterval)
+	metricsTicker := time.NewTicker(f.Config.MetricsUpdateInterval)
 	defer metricsTicker.Stop()
 	for {
 		select {

plugin/storage/badger/factory_test.go

@@ -183,26 +183,24 @@ func TestBadgerMetrics(t *testing.T) {
 	require.NoError(t, err)
 }
 
-func TestConfigureFromOptions(t *testing.T) {
+func TestConfigure(t *testing.T) {
 	f := NewFactory()
-	opts := &Options{
-		Primary: NamespaceConfig{
-			MaintenanceInterval: 42 * time.Second,
-		},
+	config := &Config{
+		MaintenanceInterval: 42 * time.Second,
 	}
-	f.configureFromOptions(opts)
-	assert.Equal(t, opts, f.Options)
+	f.configure(config)
+	assert.Equal(t, config, f.Config)
 }
 
 func TestBadgerStorageFactoryWithConfig(t *testing.T) {
-	cfg := NamespaceConfig{}
+	cfg := Config{}
 	_, err := NewFactoryWithConfig(cfg, metrics.NullFactory, zap.NewNop())
 	require.Error(t, err)
 	require.ErrorContains(t, err, "Error Creating Dir")
 
 	tmp := os.TempDir()
 	defer os.Remove(tmp)
-	cfg = NamespaceConfig{
+	cfg = Config{
 		Directories: Directories{
 			Keys:   tmp,
 			Values: tmp,