enhance: Update latest sdk update to client pkg (#33105)

Related to #31293
See also milvus-io/milvus-sdk-go#704 milvus-io/milvus-sdk-go#711 
milvus-io/milvus-sdk-go#713 milvus-io/milvus-sdk-go#721
milvus-io/milvus-sdk-go#732 milvus-io/milvus-sdk-go#739 
milvus-io/milvus-sdk-go#748

---------

Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>

client/OWNERS

@@ -1,5 +1,6 @@
 reviewers:
   - congqixia
+  - ThreadDao
 
 approvers:
   - maintainers

client/client.go

@@ -18,14 +18,20 @@ package client
 
 import (
 	"context"
+	"crypto/tls"
 	"fmt"
+	"math"
 	"os"
 	"strconv"
+	"sync"
 	"time"
 
 	"github.com/gogo/status"
+	grpc_retry "github.com/grpc-ecosystem/go-grpc-middleware/retry"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/credentials"
+	"google.golang.org/grpc/credentials/insecure"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
@@ -39,6 +45,11 @@ type Client struct {
 	service milvuspb.MilvusServiceClient
 	config  *ClientConfig
 
+	// mutable status
+	stateMut   sync.RWMutex
+	currentDB  string
+	identifier string
+
 	collCache *CollectionCache
 }
 
@@ -54,8 +65,10 @@ func New(ctx context.Context, config *ClientConfig) (*Client, error) {
 	// Parse remote address.
 	addr := c.config.getParsedAddress()
 
+	// parse authentication parameters
+	c.config.parseAuthentication()
 	// Parse grpc options
-	options := c.config.getDialOption()
+	options := c.dialOptions()
 
 	// Connect the grpc server.
 	if err := c.connect(ctx, addr, options...); err != nil {
@@ -69,6 +82,40 @@ func New(ctx context.Context, config *ClientConfig) (*Client, error) {
 	return c, nil
 }
 
+func (c *Client) dialOptions() []grpc.DialOption {
+	var options []grpc.DialOption
+	// Construct dial option.
+	if c.config.EnableTLSAuth {
+		options = append(options, grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})))
+	} else {
+		options = append(options, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	}
+
+	if c.config.DialOptions == nil {
+		// Add default connection options.
+		options = append(options, DefaultGrpcOpts...)
+	} else {
+		options = append(options, c.config.DialOptions...)
+	}
+
+	options = append(options,
+		grpc.WithChainUnaryInterceptor(grpc_retry.UnaryClientInterceptor(
+			grpc_retry.WithMax(6),
+			grpc_retry.WithBackoff(func(attempt uint) time.Duration {
+				return 60 * time.Millisecond * time.Duration(math.Pow(3, float64(attempt)))
+			}),
+			grpc_retry.WithCodes(codes.Unavailable, codes.ResourceExhausted)),
+
+		// c.getRetryOnRateLimitInterceptor(),
+		))
+
+	options = append(options, grpc.WithChainUnaryInterceptor(
+		c.MetadataUnaryInterceptor(),
+	))
+
+	return options
+}
+
 func (c *Client) Close(ctx context.Context) error {
 	if c.conn == nil {
 		return nil
@@ -82,6 +129,18 @@ func (c *Client) Close(ctx context.Context) error {
 	return nil
 }
 
+func (c *Client) usingDatabase(dbName string) {
+	c.stateMut.Lock()
+	defer c.stateMut.Unlock()
+	c.currentDB = dbName
+}
+
+func (c *Client) setIdentifier(identifier string) {
+	c.stateMut.Lock()
+	defer c.stateMut.Unlock()
+	c.identifier = identifier
+}
+
 func (c *Client) connect(ctx context.Context, addr string, options ...grpc.DialOption) error {
 	if addr == "" {
 		return fmt.Errorf("address is empty")
@@ -112,7 +171,7 @@ func (c *Client) connectInternal(ctx context.Context) error {
 
 	req := &milvuspb.ConnectRequest{
 		ClientInfo: &commonpb.ClientInfo{
-			SdkType:    "Golang",
+			SdkType:    "GoMilvusClient",
 			SdkVersion: common.SDKVersion,
 			LocalTime:  time.Now().String(),
 			User:       c.config.Username,
@@ -131,9 +190,9 @@ func (c *Client) connectInternal(ctx context.Context) error {
 						disableJSON |
 						disableParitionKey |
 						disableDynamicSchema)
-			}
 				return nil
 			}
+		}
 		return err
 	}
 
@@ -142,7 +201,7 @@ func (c *Client) connectInternal(ctx context.Context) error {
 	}
 
 	c.config.setServerInfo(resp.GetServerInfo().GetBuildTags())
-	c.config.setIdentifier(strconv.FormatInt(resp.GetIdentifier(), 10))
+	c.setIdentifier(strconv.FormatInt(resp.GetIdentifier(), 10))
 
 	return nil
 }

client/client_config.go

@@ -1,7 +1,7 @@
 package client
 
 import (
-	"crypto/tls"
+	"context"
 	"fmt"
 	"math"
 	"net/url"
@@ -10,12 +10,9 @@ import (
 	"time"
 
 	"github.com/cockroachdb/errors"
-	grpc_retry "github.com/grpc-ecosystem/go-grpc-middleware/retry"
+	"github.com/milvus-io/milvus/pkg/util/crypto"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/backoff"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/credentials"
-	"google.golang.org/grpc/credentials/insecure"
 	"google.golang.org/grpc/keepalive"
 )
 
@@ -59,16 +56,23 @@ type ClientConfig struct {
 
 	DialOptions []grpc.DialOption // Dial options for GRPC.
 
-	// RetryRateLimit *RetryRateLimitOption // option for retry on rate limit inteceptor
+	RetryRateLimit *RetryRateLimitOption // option for retry on rate limit inteceptor
 
 	DisableConn bool
 
+	metadataHeaders map[string]string
+
 	identifier    string // Identifier for this connection
 	ServerVersion string // ServerVersion
 	parsedAddress *url.URL
 	flags         uint64 // internal flags
 }
 
+type RetryRateLimitOption struct {
+	MaxRetry   uint
+	MaxBackoff time.Duration
+}
+
 func (cfg *ClientConfig) parse() error {
 	// Prepend default fake tcp:// scheme for remote address.
 	address := cfg.Address
@@ -118,54 +122,36 @@ func (c *ClientConfig) setServerInfo(serverInfo string) {
 	c.ServerVersion = serverInfo
 }
 
-// Get parsed grpc dial options, should be called after parse was called.
+// parseAuthentication prepares authentication headers for grpc inteceptors based on the provided username, password or API key.
-func (c *ClientConfig) getDialOption() []grpc.DialOption {
+func (c *ClientConfig) parseAuthentication() {
-	options := c.DialOptions
+	c.metadataHeaders = make(map[string]string)
-	if c.DialOptions == nil {
+	if c.Username != "" || c.Password != "" {
-		// Add default connection options.
+		value := crypto.Base64Encode(fmt.Sprintf("%s:%s", c.Username, c.Password))
-		options = make([]grpc.DialOption, len(DefaultGrpcOpts))
+		c.metadataHeaders[authorizationHeader] = value
-		copy(options, DefaultGrpcOpts)
 	}
-
+	// API overwrites username & passwd
-	// Construct dial option.
+	if c.APIKey != "" {
-	if c.EnableTLSAuth {
+		value := crypto.Base64Encode(c.APIKey)
-		options = append(options, grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})))
+		c.metadataHeaders[authorizationHeader] = value
-	} else {
-		options = append(options, grpc.WithTransportCredentials(insecure.NewCredentials()))
 	}
-
-	options = append(options,
-		grpc.WithChainUnaryInterceptor(grpc_retry.UnaryClientInterceptor(
-			grpc_retry.WithMax(6),
-			grpc_retry.WithBackoff(func(attempt uint) time.Duration {
-				return 60 * time.Millisecond * time.Duration(math.Pow(3, float64(attempt)))
-			}),
-			grpc_retry.WithCodes(codes.Unavailable, codes.ResourceExhausted)),
-		// c.getRetryOnRateLimitInterceptor(),
-		))
-
-	// options = append(options, grpc.WithChainUnaryInterceptor(
-	// 	createMetaDataUnaryInterceptor(c),
-	// ))
-	return options
 }
 
-// func (c *ClientConfig) getRetryOnRateLimitInterceptor() grpc.UnaryClientInterceptor {
+func (c *ClientConfig) getRetryOnRateLimitInterceptor() grpc.UnaryClientInterceptor {
-// 	if c.RetryRateLimit == nil {
+	if c.RetryRateLimit == nil {
-// 		c.RetryRateLimit = c.defaultRetryRateLimitOption()
+		c.RetryRateLimit = c.defaultRetryRateLimitOption()
-// 	}
+	}
 
-// 	return RetryOnRateLimitInterceptor(c.RetryRateLimit.MaxRetry, c.RetryRateLimit.MaxBackoff, func(ctx context.Context, attempt uint) time.Duration {
+	return RetryOnRateLimitInterceptor(c.RetryRateLimit.MaxRetry, c.RetryRateLimit.MaxBackoff, func(ctx context.Context, attempt uint) time.Duration {
-// 		return 10 * time.Millisecond * time.Duration(math.Pow(3, float64(attempt)))
+		return 10 * time.Millisecond * time.Duration(math.Pow(3, float64(attempt)))
-// 	})
+	})
-// }
+}
 
-// func (c *ClientConfig) defaultRetryRateLimitOption() *RetryRateLimitOption {
+func (c *ClientConfig) defaultRetryRateLimitOption() *RetryRateLimitOption {
-// 	return &RetryRateLimitOption{
+	return &RetryRateLimitOption{
-// 		MaxRetry:   75,
+		MaxRetry:   75,
-// 		MaxBackoff: 3 * time.Second,
+		MaxBackoff: 3 * time.Second,
-// 	}
+	}
-// }
+}
 
 // addFlags set internal flags
 func (c *ClientConfig) addFlags(flags uint64) {

client/collection.go

@@ -98,6 +98,7 @@ func (c *Client) DescribeCollection(ctx context.Context, option *describeCollect
 			VirtualChannels:  resp.GetVirtualChannelNames(),
 			ConsistencyLevel: entity.ConsistencyLevel(resp.ConsistencyLevel),
 			ShardNum:         resp.GetShardsNum(),
+			Properties:       entity.KvPairsMap(resp.GetProperties()),
 		}
 		collection.Name = collection.Schema.CollectionName
 		return nil

client/collection_options.go

@@ -140,6 +140,7 @@ func SimpleCreateCollectionOptions(name string, dim int64) *createCollectionOpti
 		autoID:               true,
 		dim:                  dim,
 		enabledDynamicSchema: true,
+		consistencyLevel:     entity.DefaultConsistencyLevel,
 
 		isFast:     true,
 		metricType: entity.COSINE,
@@ -152,6 +153,7 @@ func NewCreateCollectionOption(name string, collectionSchema *entity.Schema) *cr
 		name:             name,
 		shardNum:         1,
 		schema:           collectionSchema,
+		consistencyLevel: entity.DefaultConsistencyLevel,
 
 		metricType: entity.COSINE,
 	}

client/column/columns.go

@@ -64,26 +64,38 @@ var errFieldDataTypeNotMatch = errors.New("FieldData type not matched")
 
 // IDColumns converts schemapb.IDs to corresponding column
 // currently Int64 / string may be in IDs
-func IDColumns(idField *schemapb.IDs, begin, end int) (Column, error) {
+func IDColumns(schema *entity.Schema, ids *schemapb.IDs, begin, end int) (Column, error) {
 	var idColumn Column
-	if idField == nil {
+	pkField := schema.PKField()
+	if pkField == nil {
+		return nil, errors.New("PK Field not found")
+	}
+	if ids == nil {
 		return nil, errors.New("nil Ids from response")
 	}
-	switch field := idField.GetIdField().(type) {
+	switch pkField.DataType {
-	case *schemapb.IDs_IntId:
+	case entity.FieldTypeInt64:
-		if end >= 0 {
+		data := ids.GetIntId().GetData()
-			idColumn = NewColumnInt64("", field.IntId.GetData()[begin:end])
+		if data == nil {
-		} else {
+			return NewColumnInt64(pkField.Name, nil), nil
-			idColumn = NewColumnInt64("", field.IntId.GetData()[begin:])
 		}
-	case *schemapb.IDs_StrId:
 		if end >= 0 {
-			idColumn = NewColumnVarChar("", field.StrId.GetData()[begin:end])
+			idColumn = NewColumnInt64(pkField.Name, data[begin:end])
 		} else {
-			idColumn = NewColumnVarChar("", field.StrId.GetData()[begin:])
+			idColumn = NewColumnInt64(pkField.Name, data[begin:])
+		}
+	case entity.FieldTypeVarChar, entity.FieldTypeString:
+		data := ids.GetStrId().GetData()
+		if data == nil {
+			return NewColumnVarChar(pkField.Name, nil), nil
+		}
+		if end >= 0 {
+			idColumn = NewColumnVarChar(pkField.Name, data[begin:end])
+		} else {
+			idColumn = NewColumnVarChar(pkField.Name, data[begin:])
 		}
 	default:
-		return nil, fmt.Errorf("unsupported id type %v", field)
+		return nil, fmt.Errorf("unsupported id type %v", pkField.DataType)
 	}
 	return idColumn, nil
 }

client/column/columns_test.go

@@ -24,18 +24,34 @@ import (
 	"github.com/stretchr/testify/assert"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
+	"github.com/milvus-io/milvus/client/v2/entity"
 )
 
 func TestIDColumns(t *testing.T) {
 	dataLen := rand.Intn(100) + 1
 	base := rand.Intn(5000) // id start point
 
+	intPKCol := entity.NewSchema().WithField(
+		entity.NewField().WithName("pk").WithIsPrimaryKey(true).WithDataType(entity.FieldTypeInt64),
+	)
+	strPKCol := entity.NewSchema().WithField(
+		entity.NewField().WithName("pk").WithIsPrimaryKey(true).WithDataType(entity.FieldTypeVarChar),
+	)
+
 	t.Run("nil id", func(t *testing.T) {
-		_, err := IDColumns(nil, 0, -1)
+		col, err := IDColumns(intPKCol, nil, 0, -1)
-		assert.NotNil(t, err)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 0, col.Len())
+		col, err = IDColumns(strPKCol, nil, 0, -1)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 0, col.Len())
 		idField := &schemapb.IDs{}
-		_, err = IDColumns(idField, 0, -1)
+		col, err = IDColumns(intPKCol, idField, 0, -1)
-		assert.NotNil(t, err)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 0, col.Len())
+		col, err = IDColumns(strPKCol, idField, 0, -1)
+		assert.NoError(t, err)
+		assert.EqualValues(t, 0, col.Len())
 	})
 
 	t.Run("int ids", func(t *testing.T) {
@@ -50,12 +66,12 @@ func TestIDColumns(t *testing.T) {
 				},
 			},
 		}
-		column, err := IDColumns(idField, 0, dataLen)
+		column, err := IDColumns(intPKCol, idField, 0, dataLen)
 		assert.Nil(t, err)
 		assert.NotNil(t, column)
 		assert.Equal(t, dataLen, column.Len())
 
-		column, err = IDColumns(idField, 0, -1) // test -1 method
+		column, err = IDColumns(intPKCol, idField, 0, -1) // test -1 method
 		assert.Nil(t, err)
 		assert.NotNil(t, column)
 		assert.Equal(t, dataLen, column.Len())
@@ -72,12 +88,12 @@ func TestIDColumns(t *testing.T) {
 				},
 			},
 		}
-		column, err := IDColumns(idField, 0, dataLen)
+		column, err := IDColumns(strPKCol, idField, 0, dataLen)
 		assert.Nil(t, err)
 		assert.NotNil(t, column)
 		assert.Equal(t, dataLen, column.Len())
 
-		column, err = IDColumns(idField, 0, -1) // test -1 method
+		column, err = IDColumns(strPKCol, idField, 0, -1) // test -1 method
 		assert.Nil(t, err)
 		assert.NotNil(t, column)
 		assert.Equal(t, dataLen, column.Len())

client/database.go

@@ -25,6 +25,12 @@ import (
 	"github.com/milvus-io/milvus/pkg/util/merr"
 )
 
+func (c *Client) UsingDatabase(ctx context.Context, option UsingDatabaseOption) error {
+	dbName := option.DbName()
+	c.usingDatabase(dbName)
+	return c.connectInternal(ctx)
+}
+
 func (c *Client) ListDatabase(ctx context.Context, option ListDatabaseOption, callOptions ...grpc.CallOption) (databaseNames []string, err error) {
 	req := option.Request()
 

client/database_options.go

@@ -18,6 +18,24 @@ package client
 
 import "github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
 
+type UsingDatabaseOption interface {
+	DbName() string
+}
+
+type usingDatabaseNameOpt struct {
+	dbName string
+}
+
+func (opt *usingDatabaseNameOpt) DbName() string {
+	return opt.dbName
+}
+
+func NewUsingDatabaseOption(dbName string) *usingDatabaseNameOpt {
+	return &usingDatabaseNameOpt{
+		dbName: dbName,
+	}
+}
+
 // ListDatabaseOption is a builder interface for ListDatabase request.
 type ListDatabaseOption interface {
 	Request() *milvuspb.ListDatabasesRequest

client/entity/collection.go

@@ -32,6 +32,7 @@ type Collection struct {
 	Loaded           bool
 	ConsistencyLevel ConsistencyLevel
 	ShardNum         int32
+	Properties       map[string]string
 }
 
 // Partition represent partition meta in Milvus

client/entity/schema.go

@@ -60,6 +60,8 @@ type Schema struct {
 	AutoID             bool
 	Fields             []*Field
 	EnableDynamicField bool
+
+	pkField *Field
 }
 
 // NewSchema creates an empty schema object.
@@ -91,6 +93,9 @@ func (s *Schema) WithDynamicFieldEnabled(dynamicEnabled bool) *Schema {
 
 // WithField adds a field into schema and returns schema itself.
 func (s *Schema) WithField(f *Field) *Schema {
+	if f.PrimaryKey {
+		s.pkField = f
+	}
 	s.Fields = append(s.Fields, f)
 	return s
 }
@@ -116,10 +121,14 @@ func (s *Schema) ReadProto(p *schemapb.CollectionSchema) *Schema {
 	s.CollectionName = p.GetName()
 	s.Fields = make([]*Field, 0, len(p.GetFields()))
 	for _, fp := range p.GetFields() {
+		field := NewField().ReadProto(fp)
 		if fp.GetAutoID() {
 			s.AutoID = true
 		}
-		s.Fields = append(s.Fields, NewField().ReadProto(fp))
+		if field.PrimaryKey {
+			s.pkField = field
+		}
+		s.Fields = append(s.Fields, field)
 	}
 	s.EnableDynamicField = p.GetEnableDynamicField()
 	return s
@@ -127,12 +136,15 @@ func (s *Schema) ReadProto(p *schemapb.CollectionSchema) *Schema {
 
 // PKFieldName returns pk field name for this schemapb.
 func (s *Schema) PKFieldName() string {
-	for _, field := range s.Fields {
+	if s.pkField == nil {
-		if field.PrimaryKey {
-			return field.Name
-		}
-	}
 		return ""
+	}
+	return s.pkField.Name
+}
+
+// PKField returns PK Field schema for this schema.
+func (s *Schema) PKField() *Field {
+	return s.pkField
 }
 
 // Field represent field schema in milvus

client/index_options.go

@@ -17,6 +17,8 @@
 package client
 
 import (
+	"fmt"
+
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
 	"github.com/milvus-io/milvus/client/v2/entity"
 	"github.com/milvus-io/milvus/client/v2/index"
@@ -31,15 +33,27 @@ type createIndexOption struct {
 	fieldName      string
 	indexName      string
 	indexDef       index.Index
+
+	extraParams map[string]any
+}
+
+func (opt *createIndexOption) WithExtraParam(key string, value any) {
+	opt.extraParams[key] = value
 }
 
 func (opt *createIndexOption) Request() *milvuspb.CreateIndexRequest {
-	return &milvuspb.CreateIndexRequest{
+	params := opt.indexDef.Params()
+	for key, value := range opt.extraParams {
+		params[key] = fmt.Sprintf("%v", value)
+	}
+	req := &milvuspb.CreateIndexRequest{
 		CollectionName: opt.collectionName,
 		FieldName:      opt.fieldName,
 		IndexName:      opt.indexName,
-		ExtraParams:    entity.MapKvPairs(opt.indexDef.Params()),
+		ExtraParams:    entity.MapKvPairs(params),
 	}
+
+	return req
 }
 
 func (opt *createIndexOption) WithIndexName(indexName string) *createIndexOption {
@@ -52,6 +66,7 @@ func NewCreateIndexOption(collectionName string, fieldName string, index index.I
 		collectionName: collectionName,
 		fieldName:      fieldName,
 		indexDef:       index,
+		extraParams:    make(map[string]any),
 	}
 }
 

client/interceptors.go

@@ -0,0 +1,159 @@
+// Licensed to the LF AI & Data foundation under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"context"
+	"time"
+
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+
+	grpc_retry "github.com/grpc-ecosystem/go-grpc-middleware/retry"
+	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
+	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+)
+
+const (
+	authorizationHeader = `authorization`
+
+	identifierHeader = `identifier`
+
+	databaseHeader = `dbname`
+)
+
+func (c *Client) MetadataUnaryInterceptor() grpc.UnaryClientInterceptor {
+	return func(ctx context.Context, method string, req, reply any, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+		ctx = c.metadata(ctx)
+		ctx = c.state(ctx)
+
+		return invoker(ctx, method, req, reply, cc, opts...)
+	}
+}
+
+func (c *Client) metadata(ctx context.Context) context.Context {
+	for k, v := range c.config.metadataHeaders {
+		ctx = metadata.AppendToOutgoingContext(ctx, k, v)
+	}
+	return ctx
+}
+
+func (c *Client) state(ctx context.Context) context.Context {
+	c.stateMut.RLock()
+	defer c.stateMut.RUnlock()
+
+	if c.currentDB != "" {
+		ctx = metadata.AppendToOutgoingContext(ctx, databaseHeader, c.currentDB)
+	}
+	if c.identifier != "" {
+		ctx = metadata.AppendToOutgoingContext(ctx, identifierHeader, c.identifier)
+	}
+
+	return ctx
+}
+
+// ref: https://github.com/grpc-ecosystem/go-grpc-middleware
+
+type ctxKey int
+
+const (
+	RetryOnRateLimit ctxKey = iota
+)
+
+// RetryOnRateLimitInterceptor returns a new retrying unary client interceptor.
+func RetryOnRateLimitInterceptor(maxRetry uint, maxBackoff time.Duration, backoffFunc grpc_retry.BackoffFuncContext) grpc.UnaryClientInterceptor {
+	return func(parentCtx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, invoker grpc.UnaryInvoker, opts ...grpc.CallOption) error {
+		if maxRetry == 0 {
+			return invoker(parentCtx, method, req, reply, cc, opts...)
+		}
+		var lastErr error
+		for attempt := uint(0); attempt < maxRetry; attempt++ {
+			_, err := waitRetryBackoff(parentCtx, attempt, maxBackoff, backoffFunc)
+			if err != nil {
+				return err
+			}
+			lastErr = invoker(parentCtx, method, req, reply, cc, opts...)
+			rspStatus := getResultStatus(reply)
+			if retryOnRateLimit(parentCtx) && rspStatus.GetErrorCode() == commonpb.ErrorCode_RateLimit {
+				continue
+			}
+			return lastErr
+		}
+		return lastErr
+	}
+}
+
+func retryOnRateLimit(ctx context.Context) bool {
+	retry, ok := ctx.Value(RetryOnRateLimit).(bool)
+	if !ok {
+		return true // default true
+	}
+	return retry
+}
+
+// getResultStatus returns status of response.
+func getResultStatus(reply interface{}) *commonpb.Status {
+	switch r := reply.(type) {
+	case *commonpb.Status:
+		return r
+	case *milvuspb.MutationResult:
+		return r.GetStatus()
+	case *milvuspb.BoolResponse:
+		return r.GetStatus()
+	case *milvuspb.SearchResults:
+		return r.GetStatus()
+	case *milvuspb.QueryResults:
+		return r.GetStatus()
+	case *milvuspb.FlushResponse:
+		return r.GetStatus()
+	default:
+		return nil
+	}
+}
+
+func contextErrToGrpcErr(err error) error {
+	switch err {
+	case context.DeadlineExceeded:
+		return status.Error(codes.DeadlineExceeded, err.Error())
+	case context.Canceled:
+		return status.Error(codes.Canceled, err.Error())
+	default:
+		return status.Error(codes.Unknown, err.Error())
+	}
+}
+
+func waitRetryBackoff(parentCtx context.Context, attempt uint, maxBackoff time.Duration, backoffFunc grpc_retry.BackoffFuncContext) (time.Duration, error) {
+	var waitTime time.Duration
+	if attempt > 0 {
+		waitTime = backoffFunc(parentCtx, attempt)
+	}
+	if waitTime > 0 {
+		if waitTime > maxBackoff {
+			waitTime = maxBackoff
+		}
+		timer := time.NewTimer(waitTime)
+		select {
+		case <-parentCtx.Done():
+			timer.Stop()
+			return waitTime, contextErrToGrpcErr(parentCtx.Err())
+		case <-timer.C:
+		}
+	}
+	return waitTime, nil
+}

client/interceptors_test.go

@@ -0,0 +1,66 @@
+// Licensed to the LF AI & Data foundation under one
+// or more contributor license agreements. See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership. The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License. You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package client
+
+import (
+	"context"
+	"math"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc"
+
+	"github.com/milvus-io/milvus-proto/go-api/v2/commonpb"
+)
+
+var mockInvokerError error
+var mockInvokerReply interface{}
+var mockInvokeTimes = 0
+
+var mockInvoker grpc.UnaryInvoker = func(ctx context.Context, method string, req, reply interface{}, cc *grpc.ClientConn, opts ...grpc.CallOption) error {
+	mockInvokeTimes++
+	return mockInvokerError
+}
+
+func resetMockInvokeTimes() {
+	mockInvokeTimes = 0
+}
+
+func TestRateLimitInterceptor(t *testing.T) {
+	maxRetry := uint(3)
+	maxBackoff := 3 * time.Second
+	inter := RetryOnRateLimitInterceptor(maxRetry, maxBackoff, func(ctx context.Context, attempt uint) time.Duration {
+		return 60 * time.Millisecond * time.Duration(math.Pow(2, float64(attempt)))
+	})
+
+	ctx := context.Background()
+
+	// with retry
+	mockInvokerReply = &commonpb.Status{ErrorCode: commonpb.ErrorCode_RateLimit}
+	resetMockInvokeTimes()
+	err := inter(ctx, "", nil, mockInvokerReply, nil, mockInvoker)
+	assert.NoError(t, err)
+	assert.Equal(t, maxRetry, uint(mockInvokeTimes))
+
+	// without retry
+	ctx1 := context.WithValue(ctx, RetryOnRateLimit, false)
+	resetMockInvokeTimes()
+	err = inter(ctx1, "", nil, mockInvokerReply, nil, mockInvoker)
+	assert.NoError(t, err)
+	assert.Equal(t, uint(1), uint(mockInvokeTimes))
+}

client/read.go

@@ -33,7 +33,7 @@ type ResultSets struct{}
 
 type ResultSet struct {
 	ResultCount  int // the returning entry count
-	GroupByValue any
+	GroupByValue column.Column
 	IDs          column.Column // auto generated id, can be mapped to the columns from `Insert` API
 	Fields       DataSet       // output field data
 	Scores       []float32     // distance to the target vector
@@ -67,35 +67,32 @@ func (c *Client) Search(ctx context.Context, option SearchOption, callOptions ..
 }
 
 func (c *Client) handleSearchResult(schema *entity.Schema, outputFields []string, nq int, resp *milvuspb.SearchResults) ([]ResultSet, error) {
-	var err error
 	sr := make([]ResultSet, 0, nq)
 	results := resp.GetResults()
 	offset := 0
 	fieldDataList := results.GetFieldsData()
 	gb := results.GetGroupByFieldValue()
-	var gbc column.Column
-	if gb != nil {
-		gbc, err = column.FieldDataColumn(gb, 0, -1)
-		if err != nil {
-			return nil, err
-		}
-	}
 	for i := 0; i < int(results.GetNumQueries()); i++ {
 		rc := int(results.GetTopks()[i]) // result entry count for current query
 		entry := ResultSet{
 			ResultCount: rc,
 			Scores:      results.GetScores()[offset : offset+rc],
 		}
-		if gbc != nil {
-			entry.GroupByValue, _ = gbc.Get(i)
-		}
 		// parse result set if current nq is not empty
 		if rc > 0 {
-			entry.IDs, entry.Err = column.IDColumns(results.GetIds(), offset, offset+rc)
+			entry.IDs, entry.Err = column.IDColumns(schema, results.GetIds(), offset, offset+rc)
 			if entry.Err != nil {
 				offset += rc
 				continue
 			}
+			// parse group-by values
+			if gb != nil {
+				entry.GroupByValue, entry.Err = column.FieldDataColumn(gb, offset, offset+rc)
+				if entry.Err != nil {
+					offset += rc
+					continue
+				}
+			}
 			entry.Fields, entry.Err = c.parseSearchResult(schema, outputFields, fieldDataList, i, offset, offset+rc)
 			sr = append(sr, entry)
 		}

client/read_options.go

@@ -87,7 +87,7 @@ func (opt *searchOption) prepareSearchRequest(annRequest *annRequest) *milvuspb.
 
 		// search param
 		bs, _ := json.Marshal(annRequest.searchParam)
-		request.SearchParams = entity.MapKvPairs(map[string]string{
+		params := map[string]string{
 			spAnnsField:     annRequest.annField,
 			spTopK:          strconv.Itoa(opt.topK),
 			spOffset:        strconv.Itoa(opt.offset),
@@ -95,8 +95,11 @@ func (opt *searchOption) prepareSearchRequest(annRequest *annRequest) *milvuspb.
 			spMetricsType:   string(annRequest.metricsType),
 			spRoundDecimal:  "-1",
 			spIgnoreGrowing: strconv.FormatBool(opt.ignoreGrowing),
-			spGroupBy:       annRequest.groupByField,
+		}
-		})
+		if annRequest.groupByField != "" {
+			params[spGroupBy] = annRequest.groupByField
+		}
+		request.SearchParams = entity.MapKvPairs(params)
 
 		// placeholder group
 		request.PlaceholderGroup = vector2PlaceholderGroupBytes(annRequest.vectors)

client/write.go

@@ -22,53 +22,90 @@ import (
 	"google.golang.org/grpc"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	"github.com/milvus-io/milvus/client/v2/column"
 	"github.com/milvus-io/milvus/pkg/util/merr"
 )
 
-func (c *Client) Insert(ctx context.Context, option InsertOption, callOptions ...grpc.CallOption) error {
+type InsertResult struct {
+	InsertCount int64
+	IDs         column.Column
+}
+
+func (c *Client) Insert(ctx context.Context, option InsertOption, callOptions ...grpc.CallOption) (InsertResult, error) {
+	result := InsertResult{}
 	collection, err := c.getCollection(ctx, option.CollectionName())
 	if err != nil {
-		return err
+		return result, err
 	}
 	req, err := option.InsertRequest(collection)
 	if err != nil {
-		return err
+		return result, err
 	}
+
 	err = c.callService(func(milvusService milvuspb.MilvusServiceClient) error {
 		resp, err := milvusService.Insert(ctx, req, callOptions...)
 
-		return merr.CheckRPCCall(resp, err)
+		err = merr.CheckRPCCall(resp, err)
-	})
+		if err != nil {
 			return err
+		}
+
+		result.InsertCount = resp.GetInsertCnt()
+		result.IDs, err = column.IDColumns(collection.Schema, resp.GetIDs(), 0, -1)
+		if err != nil {
+			return err
+		}
+
+		return nil
+	})
+	return result, err
 }
 
-func (c *Client) Delete(ctx context.Context, option DeleteOption, callOptions ...grpc.CallOption) error {
+type DeleteResult struct {
+	DeleteCount int64
+}
+
+func (c *Client) Delete(ctx context.Context, option DeleteOption, callOptions ...grpc.CallOption) (DeleteResult, error) {
 	req := option.Request()
 
-	return c.callService(func(milvusService milvuspb.MilvusServiceClient) error {
+	result := DeleteResult{}
+	err := c.callService(func(milvusService milvuspb.MilvusServiceClient) error {
 		resp, err := milvusService.Delete(ctx, req, callOptions...)
 		if err = merr.CheckRPCCall(resp, err); err != nil {
 			return err
 		}
+		result.DeleteCount = resp.GetDeleteCnt()
 		return nil
 	})
+	return result, err
 }
 
-func (c *Client) Upsert(ctx context.Context, option UpsertOption, callOptions ...grpc.CallOption) error {
+type UpsertResult struct {
+	UpsertCount int64
+	IDs         column.Column
+}
+
+func (c *Client) Upsert(ctx context.Context, option UpsertOption, callOptions ...grpc.CallOption) (UpsertResult, error) {
+	result := UpsertResult{}
 	collection, err := c.getCollection(ctx, option.CollectionName())
 	if err != nil {
-		return err
+		return result, err
 	}
 	req, err := option.UpsertRequest(collection)
 	if err != nil {
-		return err
+		return result, err
 	}
-
+	err = c.callService(func(milvusService milvuspb.MilvusServiceClient) error {
-	return c.callService(func(milvusService milvuspb.MilvusServiceClient) error {
 		resp, err := milvusService.Upsert(ctx, req, callOptions...)
 		if err = merr.CheckRPCCall(resp, err); err != nil {
 			return err
 		}
+		result.UpsertCount = resp.GetUpsertCnt()
+		result.IDs, err = column.IDColumns(collection.Schema, resp.GetIDs(), 0, -1)
+		if err != nil {
+			return err
+		}
 		return nil
 	})
+	return result, err
 }

client/write_test.go

@@ -23,6 +23,7 @@ import (
 	"testing"
 
 	"github.com/milvus-io/milvus-proto/go-api/v2/milvuspb"
+	"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
 	"github.com/milvus-io/milvus/client/v2/entity"
 	"github.com/milvus-io/milvus/pkg/util/merr"
 	"github.com/samber/lo"
@@ -64,15 +65,24 @@ func (s *WriteSuite) TestInsert() {
 			s.EqualValues(3, ir.GetNumRows())
 			return &milvuspb.MutationResult{
 				Status:    merr.Success(),
+				InsertCnt: 3,
+				IDs: &schemapb.IDs{
+					IdField: &schemapb.IDs_IntId{
+						IntId: &schemapb.LongArray{
+							Data: []int64{1, 2, 3},
+						},
+					},
+				},
 			}, nil
 		}).Once()
 
-		err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
+		result, err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
 			WithInt64Column("id", []int64{1, 2, 3}).WithPartition(partName))
 		s.NoError(err)
+		s.EqualValues(3, result.InsertCount)
 	})
 
 	s.Run("dynamic_schema", func() {
@@ -87,16 +97,25 @@ func (s *WriteSuite) TestInsert() {
 			s.EqualValues(3, ir.GetNumRows())
 			return &milvuspb.MutationResult{
 				Status:    merr.Success(),
+				InsertCnt: 3,
+				IDs: &schemapb.IDs{
+					IdField: &schemapb.IDs_IntId{
+						IntId: &schemapb.LongArray{
+							Data: []int64{1, 2, 3},
+						},
+					},
+				},
 			}, nil
 		}).Once()
 
-		err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
+		result, err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
 			WithVarcharColumn("extra", []string{"a", "b", "c"}).
 			WithInt64Column("id", []int64{1, 2, 3}).WithPartition(partName))
 		s.NoError(err)
+		s.EqualValues(3, result.InsertCount)
 	})
 
 	s.Run("bad_input", func() {
@@ -141,7 +160,7 @@ func (s *WriteSuite) TestInsert() {
 
 		for _, tc := range cases {
 			s.Run(tc.tag, func() {
-				err := s.client.Insert(ctx, tc.input)
+				_, err := s.client.Insert(ctx, tc.input)
 				s.Error(err)
 			})
 		}
@@ -153,7 +172,7 @@ func (s *WriteSuite) TestInsert() {
 
 		s.mock.EXPECT().Insert(mock.Anything, mock.Anything).Return(nil, merr.WrapErrServiceInternal("mocked")).Once()
 
-		err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
+		_, err := s.client.Insert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
@@ -178,15 +197,24 @@ func (s *WriteSuite) TestUpsert() {
 			s.EqualValues(3, ur.GetNumRows())
 			return &milvuspb.MutationResult{
 				Status:    merr.Success(),
+				UpsertCnt: 3,
+				IDs: &schemapb.IDs{
+					IdField: &schemapb.IDs_IntId{
+						IntId: &schemapb.LongArray{
+							Data: []int64{1, 2, 3},
+						},
+					},
+				},
 			}, nil
 		}).Once()
 
-		err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
+		result, err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
 			WithInt64Column("id", []int64{1, 2, 3}).WithPartition(partName))
 		s.NoError(err)
+		s.EqualValues(3, result.UpsertCount)
 	})
 
 	s.Run("dynamic_schema", func() {
@@ -201,16 +229,25 @@ func (s *WriteSuite) TestUpsert() {
 			s.EqualValues(3, ur.GetNumRows())
 			return &milvuspb.MutationResult{
 				Status:    merr.Success(),
+				UpsertCnt: 3,
+				IDs: &schemapb.IDs{
+					IdField: &schemapb.IDs_IntId{
+						IntId: &schemapb.LongArray{
+							Data: []int64{1, 2, 3},
+						},
+					},
+				},
 			}, nil
 		}).Once()
 
-		err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
+		result, err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
 			WithVarcharColumn("extra", []string{"a", "b", "c"}).
 			WithInt64Column("id", []int64{1, 2, 3}).WithPartition(partName))
 		s.NoError(err)
+		s.EqualValues(3, result.UpsertCount)
 	})
 
 	s.Run("bad_input", func() {
@@ -255,7 +292,7 @@ func (s *WriteSuite) TestUpsert() {
 
 		for _, tc := range cases {
 			s.Run(tc.tag, func() {
-				err := s.client.Upsert(ctx, tc.input)
+				_, err := s.client.Upsert(ctx, tc.input)
 				s.Error(err)
 			})
 		}
@@ -267,7 +304,7 @@ func (s *WriteSuite) TestUpsert() {
 
 		s.mock.EXPECT().Upsert(mock.Anything, mock.Anything).Return(nil, merr.WrapErrServiceInternal("mocked")).Once()
 
-		err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
+		_, err := s.client.Upsert(ctx, NewColumnBasedInsertOption(collName).
 			WithFloatVectorColumn("vector", 128, lo.RepeatBy(3, func(i int) []float32 {
 				return lo.RepeatBy(128, func(i int) float32 { return rand.Float32() })
 			})).
@@ -316,10 +353,12 @@ func (s *WriteSuite) TestDelete() {
 					s.Equal(tc.expectExpr, dr.GetExpr())
 					return &milvuspb.MutationResult{
 						Status:    merr.Success(),
+						DeleteCnt: 100,
 					}, nil
 				}).Once()
-				err := s.client.Delete(ctx, tc.input)
+				result, err := s.client.Delete(ctx, tc.input)
 				s.NoError(err)
+				s.EqualValues(100, result.DeleteCount)
 			})
 		}
 	})