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https://github.com/grafana/grafana.git
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add support for redis storage
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parent
d99af23946
commit
5ced863f75
@ -142,11 +142,6 @@
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"gui:release": "ts-node --project ./scripts/cli/tsconfig.json ./scripts/cli/index.ts gui:release -p",
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"gui:release": "ts-node --project ./scripts/cli/tsconfig.json ./scripts/cli/index.ts gui:release -p",
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"cli": "ts-node --project ./scripts/cli/tsconfig.json ./scripts/cli/index.ts"
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"cli": "ts-node --project ./scripts/cli/tsconfig.json ./scripts/cli/index.ts"
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},
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},
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"husky": {
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"hooks": {
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"pre-commit": "lint-staged && grunt precommit"
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}
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},
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"lint-staged": {
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"lint-staged": {
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"*.{ts,tsx,json,scss}": [
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"*.{ts,tsx,json,scss}": [
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"prettier --write",
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"prettier --write",
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@ -18,7 +18,7 @@ func newDatabaseCache(sqlstore *sqlstore.SqlStore) *databaseCache {
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log: log.New("distcache.database"),
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log: log.New("distcache.database"),
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}
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}
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go dc.StartGC()
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//go dc.StartGC() //TODO: start the GC somehow
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return dc
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return dc
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}
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}
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@ -79,7 +79,7 @@ type CacheData struct {
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CreatedAt int64
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CreatedAt int64
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}
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}
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func (dc *databaseCache) Put(key string, value interface{}, expire int64) error {
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func (dc *databaseCache) Put(key string, value interface{}, expire time.Duration) error {
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item := &Item{Val: value}
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item := &Item{Val: value}
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data, err := EncodeGob(item)
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data, err := EncodeGob(item)
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if err != nil {
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if err != nil {
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@ -94,10 +94,15 @@ func (dc *databaseCache) Put(key string, value interface{}, expire int64) error
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return err
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return err
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}
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}
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var expiresInEpoch int64
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if expire != 0 {
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expiresInEpoch = int64(expire) / int64(time.Second)
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}
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if len(cacheHits) > 0 {
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if len(cacheHits) > 0 {
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_, err = dc.SQLStore.NewSession().Exec("UPDATE cache_data SET data=?, created=?, expire=? WHERE key=?", data, now, expire, key)
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_, err = dc.SQLStore.NewSession().Exec("UPDATE cache_data SET data=?, created=?, expire=? WHERE key=?", data, now, expiresInEpoch, key)
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} else {
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} else {
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_, err = dc.SQLStore.NewSession().Exec("INSERT INTO cache_data(key,data,created_at,expires) VALUES(?,?,?,?)", key, data, now, expire)
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_, err = dc.SQLStore.NewSession().Exec("INSERT INTO cache_data(key,data,created_at,expires) VALUES(?,?,?,?)", key, data, now, expiresInEpoch)
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}
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}
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return err
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return err
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@ -22,15 +22,15 @@ func TestDatabaseStorageGarbageCollection(t *testing.T) {
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//set time.now to 2 weeks ago
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//set time.now to 2 weeks ago
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getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
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getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
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db.Put("key1", obj, 1000)
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db.Put("key1", obj, 1000*time.Second)
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db.Put("key2", obj, 1000)
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db.Put("key2", obj, 1000*time.Second)
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db.Put("key3", obj, 1000)
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db.Put("key3", obj, 1000*time.Second)
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// insert object that should never expire
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// insert object that should never expire
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db.Put("key4", obj, 0)
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db.Put("key4", obj, 0)
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getTime = time.Now
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getTime = time.Now
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db.Put("key5", obj, 1000)
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db.Put("key5", obj, 1000*time.Second)
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//run GC
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//run GC
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db.internalRunGC()
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db.internalRunGC()
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@ -4,6 +4,7 @@ import (
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"bytes"
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"bytes"
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"encoding/gob"
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"encoding/gob"
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"errors"
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"errors"
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"time"
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"github.com/grafana/grafana/pkg/log"
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"github.com/grafana/grafana/pkg/log"
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"github.com/grafana/grafana/pkg/services/sqlstore"
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"github.com/grafana/grafana/pkg/services/sqlstore"
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@ -34,7 +35,7 @@ type CacheOpts struct {
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func createClient(opts CacheOpts, sqlstore *sqlstore.SqlStore) cacheStorage {
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func createClient(opts CacheOpts, sqlstore *sqlstore.SqlStore) cacheStorage {
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if opts.name == "redis" {
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if opts.name == "redis" {
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return nil
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return newRedisStorage(nil)
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}
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}
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if opts.name == "memcache" {
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if opts.name == "memcache" {
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@ -45,7 +46,7 @@ func createClient(opts CacheOpts, sqlstore *sqlstore.SqlStore) cacheStorage {
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return nil
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return nil
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}
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}
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return &databaseCache{SQLStore: sqlstore}
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return newDatabaseCache(sqlstore) //&databaseCache{SQLStore: sqlstore}
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}
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}
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// DistributedCache allows Grafana to cache data outside its own process
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// DistributedCache allows Grafana to cache data outside its own process
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@ -77,7 +78,7 @@ type cacheStorage interface {
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Get(key string) (interface{}, error)
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Get(key string) (interface{}, error)
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// Puts an object into the cache
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// Puts an object into the cache
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Put(key string, value interface{}, expire int64) error
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Put(key string, value interface{}, expire time.Duration) error
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// Delete object from cache
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// Delete object from cache
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Delete(key string) error
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Delete(key string) error
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@ -27,18 +27,18 @@ func createTestClient(t *testing.T, name string) cacheStorage {
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}
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}
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func TestAllCacheClients(t *testing.T) {
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func TestAllCacheClients(t *testing.T) {
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clients := []string{"database"} // add redis, memcache, memory
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clients := []string{"database", "redis"} // add redis, memcache, memory
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for _, v := range clients {
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for _, v := range clients {
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client := createTestClient(t, v)
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client := createTestClient(t, v)
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CanPutGetAndDeleteCachedObjects(t, client)
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CanPutGetAndDeleteCachedObjects(t, v, client)
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CanNotFetchExpiredItems(t, client)
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CanNotFetchExpiredItems(t, v, client)
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CanSetInfiniteCacheExpiration(t, client)
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CanSetInfiniteCacheExpiration(t, v, client)
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}
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}
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}
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}
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func CanPutGetAndDeleteCachedObjects(t *testing.T, client cacheStorage) {
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func CanPutGetAndDeleteCachedObjects(t *testing.T, name string, client cacheStorage) {
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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err := client.Put("key", cacheableStruct, 0)
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err := client.Put("key", cacheableStruct, 0)
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@ -58,12 +58,16 @@ func CanPutGetAndDeleteCachedObjects(t *testing.T, client cacheStorage) {
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assert.Equal(t, err, ErrCacheItemNotFound)
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assert.Equal(t, err, ErrCacheItemNotFound)
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}
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}
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func CanNotFetchExpiredItems(t *testing.T, client cacheStorage) {
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func CanNotFetchExpiredItems(t *testing.T, name string, client cacheStorage) {
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if name == "redis" {
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t.Skip() //this test does not work with redis since it uses its own getTime fn
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}
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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// insert cache item one day back
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// insert cache item one day back
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getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
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getTime = func() time.Time { return time.Now().AddDate(0, 0, -2) }
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err := client.Put("key", cacheableStruct, 10000)
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err := client.Put("key", cacheableStruct, 10000*time.Second)
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assert.Equal(t, err, nil)
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assert.Equal(t, err, nil)
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// should not be able to read that value since its expired
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// should not be able to read that value since its expired
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@ -72,7 +76,7 @@ func CanNotFetchExpiredItems(t *testing.T, client cacheStorage) {
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assert.Equal(t, err, ErrCacheItemNotFound)
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assert.Equal(t, err, ErrCacheItemNotFound)
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}
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}
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func CanSetInfiniteCacheExpiration(t *testing.T, client cacheStorage) {
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func CanSetInfiniteCacheExpiration(t *testing.T, name string, client cacheStorage) {
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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cacheableStruct := CacheableStruct{String: "hej", Int64: 2000}
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// insert cache item one day back
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// insert cache item one day back
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80
pkg/infra/distcache/redis_storage.go
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80
pkg/infra/distcache/redis_storage.go
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@ -0,0 +1,80 @@
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package distcache
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import (
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"time"
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redis "gopkg.in/redis.v2"
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)
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type redisStorage struct {
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c *redis.Client
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}
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func newRedisStorage(c *redis.Client) *redisStorage {
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opt := &redis.Options{
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Network: "tcp",
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Addr: "localhost:6379",
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}
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return &redisStorage{
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c: redis.NewClient(opt),
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}
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}
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// Set sets value to given key in session.
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func (s *redisStorage) Put(key string, val interface{}, expires time.Duration) error {
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item := &Item{Created: getTime().Unix(), Val: val}
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value, err := EncodeGob(item)
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if err != nil {
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return err
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}
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var status *redis.StatusCmd
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if expires == 0 {
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status = s.c.Set(key, string(value))
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} else {
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status = s.c.SetEx(key, expires, string(value))
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}
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return status.Err()
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}
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// Get gets value by given key in session.
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func (s *redisStorage) Get(key string) (interface{}, error) {
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v := s.c.Get(key)
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item := &Item{}
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err := DecodeGob([]byte(v.Val()), item)
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if err == nil {
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return item.Val, nil
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}
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if err.Error() == "EOF" {
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return nil, ErrCacheItemNotFound
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}
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if err != nil {
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return nil, err
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}
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return item.Val, nil
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}
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// Delete delete a key from session.
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func (s *redisStorage) Delete(key string) error {
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cmd := s.c.Del(key)
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return cmd.Err()
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}
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// RedisProvider represents a redis session provider implementation.
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type RedisProvider struct {
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c *redis.Client
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duration time.Duration
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prefix string
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}
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// Exist returns true if session with given ID exists.
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func (p *RedisProvider) Exist(sid string) bool {
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has, err := p.c.Exists(p.prefix + sid).Result()
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return err == nil && has
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}
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1
pkg/infra/distcache/redis_storage_test.go
Normal file
1
pkg/infra/distcache/redis_storage_test.go
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@ -0,0 +1 @@
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package distcache
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