增加leveldb支持

go.mod

@@ -5,9 +5,13 @@ go 1.17
 require (
 	github.com/eclipse/paho.mqtt.golang v1.2.0
 	github.com/gin-gonic/gin v1.7.4
+	github.com/gofrs/uuid v3.3.0+incompatible
 	github.com/gomodule/redigo v1.8.5
 	github.com/hashicorp/consul/api v1.10.1
 	github.com/influxdata/influxdb v1.9.5
+	github.com/sirupsen/logrus v1.7.0
+	github.com/stretchr/testify v1.7.0
+	github.com/syndtr/goleveldb v1.0.0
 	go.mongodb.org/mongo-driver v1.7.4
 	google.golang.org/grpc v1.41.0
 	gorm.io/driver/mysql v1.1.2
@@ -18,6 +22,7 @@ require (
 
 require (
 	github.com/armon/go-metrics v0.3.3 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/fatih/color v1.9.0 // indirect
 	github.com/gin-contrib/sse v0.1.0 // indirect
 	github.com/go-playground/locales v0.14.0 // indirect
@@ -47,6 +52,7 @@ require (
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/ugorji/go/codec v1.2.6 // indirect
 	github.com/xdg-go/pbkdf2 v1.0.0 // indirect
 	github.com/xdg-go/scram v1.0.2 // indirect
@@ -60,4 +66,5 @@ require (
 	google.golang.org/genproto v0.0.0-20210903162649-d08c68adba83 // indirect
 	google.golang.org/protobuf v1.27.1 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )

leveldb/config.go

@@ -0,0 +1,5 @@
+package leveldb
+
+type Config struct {
+	Path string
+}

leveldb/leveldb.go

@@ -0,0 +1,111 @@
+package leveldb
+
+import (
+	"errors"
+
+	"github.com/syndtr/goleveldb/leveldb"
+	"github.com/syndtr/goleveldb/leveldb/opt"
+)
+
+var _db *leveldb.DB
+var config *Config
+
+func Init(conf *Config) {
+	if conf == nil {
+		conf = &Config{
+			Path: "./",
+		}
+	}
+}
+
+func New() (*leveldb.DB, error) {
+	if _db != nil {
+		return _db, nil
+	}
+	db, err := leveldb.OpenFile(config.Path, nil)
+	if err != nil {
+		return nil, err
+	}
+	_db = db
+	return _db, nil
+}
+
+func Close() {
+	if _db != nil {
+		_db.Close()
+	}
+	_db = nil
+}
+
+func Get(key, reqid *string) (*[]byte, error) {
+	db, err := New()
+	if err != nil {
+		return nil, err
+	}
+	if db == nil {
+		return nil, errors.New("leveldb is nil")
+	}
+	ret, err := db.Has([]byte(*key), &opt.ReadOptions{
+		DontFillCache: false,
+		Strict:        0,
+	})
+	if err != nil {
+		return nil, errors.New("key检查异常")
+	}
+
+	if !ret {
+		return nil, errors.New("key不存在")
+	}
+
+	val, err := db.Get([]byte(*key), nil)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(val) == 0 {
+		return nil, errors.New("key empty")
+	}
+	return &val, nil
+}
+
+func Put(key *string, payload *[]byte) error {
+	db, err := New()
+	if err != nil {
+		return err
+	}
+	if db == nil {
+		return errors.New("leveldb is busy now")
+	}
+
+	if err := db.Put([]byte(*key), *payload, nil); err != nil {
+		return err
+	}
+	return nil
+}
+
+func Delete(key *string) error {
+	db, err := New()
+	if err != nil {
+		return err
+	}
+	if db == nil {
+		return errors.New("leveldb is busy now")
+	}
+
+	ret, err := db.Has([]byte(*key), &opt.ReadOptions{
+		DontFillCache: false,
+		Strict:        0,
+	})
+	if err != nil {
+		return err
+	}
+
+	if !ret {
+		return nil
+	}
+
+	if err := db.Delete([]byte(*key), nil); err != nil {
+		return err
+	}
+	return nil
+}

test/sqlite_test.go

@@ -5,6 +5,7 @@ import (
 	"math/rand"
 	"testing"
 
+	"github.com/stretchr/testify/assert"
 	"myschools.me/suguo/snippet/sqlite"
 )
 
@@ -22,22 +23,17 @@ type CBA struct {
 
 func TestSqlite(t *testing.T) {
 	conf := &sqlite.Config{
-		DBFile: "tmp1/abc/aaaaa/abc.db",
+		DBFile: "tmp/abc.db",
 	}
 	if err := sqlite.Init(conf); err != nil {
-		t.Fatal(err)
+		assert.Nil(t, err)
 	}
 	db, err := sqlite.New()
-	if err != nil {
+	assert.Nil(t, err)
-		t.Fatal(err)
+	assert.NotNil(t, db)
-	}
-
-	if db == nil {
-		t.Error("DB nil")
-	}
 
 	if err := sqlite.Migrate(&ABC{}, &CBA{}); err != nil {
-		t.Fatal(err)
+		assert.Nil(t, err)
 	}
 }