feat: initial commit

internal/store/redis/helper.go

@@ -0,0 +1,93 @@
+package redis
+
+import (
+	"context"
+	"encoding/json"
+	"strings"
+
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+)
+
+type jsonWrapper[T any] struct {
+	value T
+}
+
+func (w *jsonWrapper[T]) MarshalBinary() ([]byte, error) {
+	data, err := json.Marshal(w.value)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return data, nil
+}
+
+func (w *jsonWrapper[T]) UnmarshalBinary(data []byte) error {
+	if err := json.Unmarshal(data, &w.value); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func (w *jsonWrapper[T]) UnmarshalText(data []byte) error {
+	if err := json.Unmarshal(data, &w.value); err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func (w *jsonWrapper[T]) Value() T {
+	return w.value
+}
+
+func wrap[T any](v T) *jsonWrapper[T] {
+	return &jsonWrapper[T]{v}
+}
+
+func unwrap[T any](v any) (T, error) {
+	str, ok := v.(string)
+	if !ok {
+		return *new(T), errors.Errorf("could not unwrap value of type '%T'", v)
+	}
+
+	u := new(T)
+
+	if err := json.Unmarshal([]byte(str), u); err != nil {
+		return *new(T), errors.WithStack(err)
+	}
+
+	return *u, nil
+}
+
+func key(parts ...string) string {
+	return strings.Join(parts, ":")
+}
+
+func WithTx(ctx context.Context, client redis.UniversalClient, key string, fn func(ctx context.Context, tx *redis.Tx) error) error {
+	txf := func(tx *redis.Tx) error {
+		if err := fn(ctx, tx); err != nil {
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}
+
+	err := client.Watch(ctx, txf, key)
+	if err != nil {
+		return errors.WithStack(err)
+	}
+
+	return nil
+}
+
+func contains[T ~string](values []T, v T) bool {
+	for _, vv := range values {
+		if vv == v {
+			return true
+		}
+	}
+
+	return false
+}

internal/store/redis/layer_item.go

@@ -0,0 +1,62 @@
+package redis
+
+import (
+	"time"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/pkg/errors"
+)
+
+type layerHeaderItem struct {
+	Proxy string `redis:"proxy"`
+	Name  string `redis:"name"`
+	Type  string `redis:"type"`
+
+	Weight  int  `redis:"weight"`
+	Enabled bool `redis:"enabled"`
+}
+
+func (i *layerHeaderItem) ToLayerHeader() (*store.LayerHeader, error) {
+	layerHeader := &store.LayerHeader{
+		Proxy:   store.ProxyName(i.Proxy),
+		Name:    store.LayerName(i.Name),
+		Type:    store.LayerType(i.Type),
+		Weight:  i.Weight,
+		Enabled: i.Enabled,
+	}
+
+	return layerHeader, nil
+}
+
+type layerItem struct {
+	layerHeaderItem
+	Options *jsonWrapper[store.LayerOptions] `redis:"options"`
+
+	CreatedAt *jsonWrapper[time.Time] `redis:"created_at"`
+	UpdatedAt *jsonWrapper[time.Time] `redis:"updated_at"`
+}
+
+func (i *layerItem) ToLayer() (*store.Layer, error) {
+	layerHeader, err := i.layerHeaderItem.ToLayerHeader()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	layer := &store.Layer{
+		LayerHeader: *layerHeader,
+	}
+
+	if i.Options != nil {
+		layer.Options = i.Options.Value()
+	}
+
+	if i.CreatedAt != nil {
+		layer.CreatedAt = i.CreatedAt.Value()
+	}
+
+	if i.UpdatedAt != nil {
+		layer.UpdatedAt = i.UpdatedAt.Value()
+	}
+
+	return layer, nil
+}

internal/store/redis/layer_repository.go

@@ -0,0 +1,256 @@
+package redis
+
+import (
+	"context"
+	"time"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	keyPrefixLayer = "layer"
+)
+
+type LayerRepository struct {
+	client redis.UniversalClient
+}
+
+// CreateLayer implements store.LayerRepository
+func (r *LayerRepository) CreateLayer(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName, layerType store.LayerType, options store.LayerOptions) (*store.Layer, error) {
+	now := time.Now().UTC()
+	key := layerKey(proxyName, layerName)
+
+	layerItem := &layerItem{
+		layerHeaderItem: layerHeaderItem{
+			Proxy:   string(proxyName),
+			Name:    string(layerName),
+			Type:    string(layerType),
+			Weight:  0,
+			Enabled: false,
+		},
+
+		CreatedAt: wrap(now),
+		UpdatedAt: wrap(now),
+		Options:   wrap(store.LayerOptions{}),
+	}
+
+	txf := func(tx *redis.Tx) error {
+		exists, err := tx.Exists(ctx, key).Uint64()
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		if exists > 0 {
+			return errors.WithStack(store.ErrAlreadyExist)
+		}
+
+		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
+			p.HMSet(ctx, key, &layerItem.layerHeaderItem)
+			p.HMSet(ctx, key, layerItem)
+
+			return nil
+		})
+
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}
+
+	err := r.client.Watch(ctx, txf, key)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return &store.Layer{
+		LayerHeader: store.LayerHeader{
+			Name:    layerName,
+			Proxy:   proxyName,
+			Type:    layerType,
+			Weight:  0,
+			Enabled: false,
+		},
+
+		CreatedAt: now,
+		UpdatedAt: now,
+		Options:   store.LayerOptions{},
+	}, nil
+}
+
+// DeleteLayer implements store.LayerRepository
+func (r *LayerRepository) DeleteLayer(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName) error {
+	key := layerKey(proxyName, layerName)
+
+	if cmd := r.client.Del(ctx, key); cmd.Err() != nil {
+		return errors.WithStack(cmd.Err())
+	}
+
+	return nil
+}
+
+// GetLayer implements store.LayerRepository
+func (r *LayerRepository) GetLayer(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName) (*store.Layer, error) {
+	key := layerKey(proxyName, layerName)
+	var layerItem *layerItem
+
+	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+		pItem, err := r.txGetLayerItem(ctx, tx, proxyName, layerName)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		layerItem = pItem
+
+		return nil
+	})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	layer, err := layerItem.ToLayer()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return layer, nil
+}
+
+func (r *LayerRepository) txGetLayerItem(ctx context.Context, tx *redis.Tx, proxyName store.ProxyName, layerName store.LayerName) (*layerItem, error) {
+	layerItem := layerItem{}
+	key := layerKey(proxyName, layerName)
+
+	exists, err := tx.Exists(ctx, key).Uint64()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	if exists == 0 {
+		return nil, errors.WithStack(store.ErrNotFound)
+	}
+
+	if err := tx.HGetAll(ctx, key).Scan(&layerItem.layerHeaderItem); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	if err := tx.HGetAll(ctx, key).Scan(&layerItem); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return &layerItem, nil
+}
+
+// QueryLayers implements store.LayerRepository
+func (r *LayerRepository) QueryLayers(ctx context.Context, proxyName store.ProxyName, funcs ...store.QueryLayerOptionFunc) ([]*store.LayerHeader, error) {
+	opts := store.DefaultQueryLayerOptions()
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	keyParts := []string{keyPrefixLayer, string(proxyName)}
+
+	if opts.Name != nil {
+		keyParts = append(keyParts, string(*opts.Name))
+	} else {
+		keyParts = append(keyParts, "*")
+	}
+
+	key := key(keyParts...)
+
+	iter := r.client.Scan(ctx, 0, key, 0).Iterator()
+
+	headers := make([]*store.LayerHeader, 0)
+
+	for iter.Next(ctx) {
+		key := iter.Val()
+
+		layerHeaderItem := &layerHeaderItem{}
+
+		if err := r.client.HGetAll(ctx, key).Scan(layerHeaderItem); err != nil {
+			return nil, errors.WithStack(err)
+		}
+
+		layerHeader, err := layerHeaderItem.ToLayerHeader()
+		if err != nil {
+			return nil, errors.WithStack(err)
+		}
+
+		headers = append(headers, layerHeader)
+	}
+
+	if err := iter.Err(); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return headers, nil
+}
+
+// UpdateLayer implements store.LayerRepository
+func (r *LayerRepository) UpdateLayer(ctx context.Context, proxyName store.ProxyName, layerName store.LayerName, funcs ...store.UpdateLayerOptionFunc) (*store.Layer, error) {
+	opts := &store.UpdateLayerOptions{}
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	key := layerKey(proxyName, layerName)
+	var layerItem layerItem
+
+	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+		item, err := r.txGetLayerItem(ctx, tx, proxyName, layerName)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		if opts.Enabled != nil {
+			item.Enabled = *opts.Enabled
+		}
+
+		if opts.Weight != nil {
+			item.Weight = *opts.Weight
+		}
+
+		if opts.Options != nil {
+			item.Options = wrap(*opts.Options)
+		}
+
+		item.UpdatedAt = wrap(time.Now().UTC())
+
+		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
+			p.HMSet(ctx, key, item.layerHeaderItem)
+			p.HMSet(ctx, key, item)
+
+			return nil
+		})
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		layerItem = *item
+
+		return nil
+	})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	layer, err := layerItem.ToLayer()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return layer, nil
+}
+
+func NewLayerRepository(client redis.UniversalClient) *LayerRepository {
+	return &LayerRepository{
+		client: client,
+	}
+}
+
+var _ store.LayerRepository = &LayerRepository{}
+
+func layerKey(proxyName store.ProxyName, layerName store.LayerName) string {
+	return key(keyPrefixLayer, string(proxyName), string(layerName))
+}

internal/store/redis/layer_repository_test.go

@@ -0,0 +1,12 @@
+package redis
+
+import (
+	"testing"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store/testsuite"
+)
+
+func TestLayerRepository(t *testing.T) {
+	repository := NewLayerRepository(client)
+	testsuite.TestLayerRepository(t, repository)
+}

internal/store/redis/main_test.go

@@ -0,0 +1,58 @@
+package redis
+
+import (
+	"context"
+	"log"
+	"os"
+	"testing"
+
+	"github.com/ory/dockertest/v3"
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+)
+
+var client redis.UniversalClient
+
+func TestMain(m *testing.M) {
+	// uses a sensible default on windows (tcp/http) and linux/osx (socket)
+	pool, err := dockertest.NewPool("")
+	if err != nil {
+		log.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	// uses pool to try to connect to Docker
+	err = pool.Client.Ping()
+	if err != nil {
+		log.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	// pulls an image, creates a container based on it and runs it
+	resource, err := pool.Run("redis", "alpine3.17", []string{})
+	if err != nil {
+		log.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	if err := pool.Retry(func() error {
+		client = redis.NewUniversalClient(&redis.UniversalOptions{
+			Addrs: []string{resource.GetHostPort("6379/tcp")},
+		})
+
+		ctx := context.Background()
+
+		if cmd := client.Ping(ctx); cmd.Err() != nil {
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}); err != nil {
+		log.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	code := m.Run()
+
+	if err := pool.Purge(resource); err != nil {
+		log.Fatalf("%+v", errors.WithStack(err))
+	}
+
+	os.Exit(code)
+}

internal/store/redis/proxy_item.go

@@ -0,0 +1,60 @@
+package redis
+
+import (
+	"time"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/pkg/errors"
+)
+
+type proxyHeaderItem struct {
+	Name string `redis:"name"`
+
+	Weight  int  `redis:"weight"`
+	Enabled bool `redis:"enabled"`
+
+	CreatedAt *jsonWrapper[time.Time] `redis:"created_at"`
+	UpdatedAt *jsonWrapper[time.Time] `redis:"updated_at"`
+}
+
+func (i *proxyHeaderItem) ToProxyHeader() (*store.ProxyHeader, error) {
+	proxyHeader := &store.ProxyHeader{
+		Name:    store.ProxyName(i.Name),
+		Weight:  i.Weight,
+		Enabled: i.Enabled,
+	}
+
+	return proxyHeader, nil
+}
+
+type proxyItem struct {
+	proxyHeaderItem
+	To   string                 `redis:"to"`
+	From *jsonWrapper[[]string] `redis:"from"`
+}
+
+func (i *proxyItem) ToProxy() (*store.Proxy, error) {
+	proxyHeader, err := i.proxyHeaderItem.ToProxyHeader()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	proxy := &store.Proxy{
+		ProxyHeader: *proxyHeader,
+		To:          i.To,
+	}
+
+	if i.CreatedAt != nil {
+		proxy.CreatedAt = i.CreatedAt.Value()
+	}
+
+	if i.UpdatedAt != nil {
+		proxy.UpdatedAt = i.UpdatedAt.Value()
+	}
+
+	if i.From != nil {
+		proxy.From = i.From.Value()
+	}
+
+	return proxy, nil
+}

internal/store/redis/proxy_repository.go

@@ -0,0 +1,254 @@
+package redis
+
+import (
+	"context"
+	"time"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store"
+	"github.com/pkg/errors"
+	"github.com/redis/go-redis/v9"
+)
+
+const (
+	keyPrefixProxy = "proxy"
+)
+
+type ProxyRepository struct {
+	client redis.UniversalClient
+}
+
+// GetProxy implements store.ProxyRepository
+func (r *ProxyRepository) GetProxy(ctx context.Context, name store.ProxyName) (*store.Proxy, error) {
+	key := proxyKey(name)
+	var proxyItem *proxyItem
+
+	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+		pItem, err := r.txGetProxyItem(ctx, tx, name)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		proxyItem = pItem
+
+		return nil
+	})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	proxy, err := proxyItem.ToProxy()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return proxy, nil
+}
+
+func (r *ProxyRepository) txGetProxyItem(ctx context.Context, tx *redis.Tx, name store.ProxyName) (*proxyItem, error) {
+	proxyItem := proxyItem{}
+	key := proxyKey(name)
+
+	exists, err := tx.Exists(ctx, key).Uint64()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	if exists == 0 {
+		return nil, errors.WithStack(store.ErrNotFound)
+	}
+
+	if err := tx.HGetAll(ctx, key).Scan(&proxyItem.proxyHeaderItem); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	if err := tx.HGetAll(ctx, key).Scan(&proxyItem); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return &proxyItem, nil
+}
+
+// CreateProxy implements store.ProxyRepository
+func (r *ProxyRepository) CreateProxy(ctx context.Context, name store.ProxyName, to string, from ...string) (*store.Proxy, error) {
+	now := time.Now().UTC()
+	key := proxyKey(name)
+
+	txf := func(tx *redis.Tx) error {
+		exists, err := tx.Exists(ctx, key).Uint64()
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		if exists > 0 {
+			return errors.WithStack(store.ErrAlreadyExist)
+		}
+
+		proxyItem := &proxyItem{
+			proxyHeaderItem: proxyHeaderItem{
+				Name:      string(name),
+				CreatedAt: wrap(now),
+				UpdatedAt: wrap(now),
+				Weight:    0,
+				Enabled:   false,
+			},
+			To:   to,
+			From: wrap(from),
+		}
+
+		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
+			p.HMSet(ctx, key, proxyItem.proxyHeaderItem)
+			p.HMSet(ctx, key, proxyItem)
+
+			return nil
+		})
+
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		return nil
+	}
+
+	err := r.client.Watch(ctx, txf, key)
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return &store.Proxy{
+		ProxyHeader: store.ProxyHeader{
+			Name: name,
+
+			Weight:  0,
+			Enabled: false,
+		},
+		To:        to,
+		From:      from,
+		CreatedAt: now,
+		UpdatedAt: now,
+	}, nil
+}
+
+// DeleteProxy implements store.ProxyRepository
+func (r *ProxyRepository) DeleteProxy(ctx context.Context, name store.ProxyName) error {
+	key := proxyKey(name)
+
+	if cmd := r.client.Del(ctx, key); cmd.Err() != nil {
+		return errors.WithStack(cmd.Err())
+	}
+
+	return nil
+}
+
+// QueryProxy implements store.ProxyRepository
+func (r *ProxyRepository) QueryProxy(ctx context.Context, funcs ...store.QueryProxyOptionFunc) ([]*store.ProxyHeader, error) {
+	opts := store.DefaultQueryProxyOptions()
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	iter := r.client.Scan(ctx, 0, keyPrefixProxy+"*", 0).Iterator()
+
+	headers := make([]*store.ProxyHeader, 0)
+
+	for iter.Next(ctx) {
+		key := iter.Val()
+
+		proxyHeaderItem := &proxyHeaderItem{}
+		if err := r.client.HGetAll(ctx, key).Scan(proxyHeaderItem); err != nil {
+			return nil, errors.WithStack(err)
+		}
+
+		proxyHeader, err := proxyHeaderItem.ToProxyHeader()
+		if err != nil {
+			return nil, errors.WithStack(err)
+		}
+
+		if opts.Enabled != nil && proxyHeader.Enabled != *opts.Enabled {
+			continue
+		}
+
+		if opts.Names != nil && !contains(opts.Names, proxyHeader.Name) {
+			continue
+		}
+
+		headers = append(headers, proxyHeader)
+	}
+
+	if err := iter.Err(); err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return headers, nil
+}
+
+// UpdateProxy implements store.ProxyRepository
+func (r *ProxyRepository) UpdateProxy(ctx context.Context, name store.ProxyName, funcs ...store.UpdateProxyOptionFunc) (*store.Proxy, error) {
+	opts := &store.UpdateProxyOptions{}
+	for _, fn := range funcs {
+		fn(opts)
+	}
+
+	key := proxyKey(name)
+	var proxyItem proxyItem
+
+	err := WithTx(ctx, r.client, key, func(ctx context.Context, tx *redis.Tx) error {
+		item, err := r.txGetProxyItem(ctx, tx, name)
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		if opts.Enabled != nil {
+			item.Enabled = *opts.Enabled
+		}
+
+		if opts.From != nil {
+			item.From = wrap(opts.From)
+		}
+
+		if opts.Weight != nil {
+			item.Weight = *opts.Weight
+		}
+
+		if opts.To != nil {
+			item.To = *opts.To
+		}
+
+		item.UpdatedAt = wrap(time.Now().UTC())
+
+		_, err = tx.TxPipelined(ctx, func(p redis.Pipeliner) error {
+			p.HMSet(ctx, key, item.proxyHeaderItem)
+			p.HMSet(ctx, key, item)
+
+			return nil
+		})
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		proxyItem = *item
+
+		return nil
+	})
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	proxy, err := proxyItem.ToProxy()
+	if err != nil {
+		return nil, errors.WithStack(err)
+	}
+
+	return proxy, nil
+}
+
+func NewProxyRepository(client redis.UniversalClient) *ProxyRepository {
+	return &ProxyRepository{
+		client: client,
+	}
+}
+
+var _ store.ProxyRepository = &ProxyRepository{}
+
+func proxyKey(name store.ProxyName) string {
+	return key(keyPrefixProxy, string(name))
+}

internal/store/redis/proxy_repository_test.go

@@ -0,0 +1,12 @@
+package redis
+
+import (
+	"testing"
+
+	"forge.cadoles.com/cadoles/bouncer/internal/store/testsuite"
+)
+
+func TestProxyRepository(t *testing.T) {
+	repository := NewProxyRepository(client)
+	testsuite.TestProxyRepository(t, repository)
+}