fix: currntly support delfate compression by using zlib

encoding.go

@@ -2,8 +2,8 @@ package meilisearch
 
 import (
 	"bytes"
-	"compress/flate"
 	"compress/gzip"
+	"compress/zlib"
 	"encoding/json"
 	"github.com/andybalholm/brotli"
 	"io"
@@ -38,7 +38,7 @@ func newEncoding(ce ContentEncoding, level EncodingCompressionLevel) encoder {
 		return &flateEncoder{
 			flWriterPool: &sync.Pool{
 				New: func() interface{} {
-					w, err := flate.NewWriter(io.Discard, level.Int())
+					w, err := zlib.NewWriterLevel(io.Discard, level.Int())
 					return &flateWriter{
 						writer: w,
 						err:    err,
@@ -124,7 +124,7 @@ type flateEncoder struct {
 }
 
 type flateWriter struct {
-	writer *flate.Writer
+	writer *zlib.Writer
 	err    error
 }
 
@@ -152,7 +152,11 @@ func (d *flateEncoder) Encode(rc io.Reader) (*bytes.Buffer, error) {
 }
 
 func (d *flateEncoder) Decode(data []byte, vPtr interface{}) error {
-	r := flate.NewReader(bytes.NewBuffer(data))
+	r, err := zlib.NewReader(bytes.NewBuffer(data))
+	if err != nil {
+		return err
+	}
+
 	defer func() {
 		_ = r.Close()
 	}()

encoding_test.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"compress/flate"
 	"compress/gzip"
+	"compress/zlib"
 	"encoding/json"
 	"errors"
 	"github.com/andybalholm/brotli"
@@ -54,7 +55,6 @@ func Test_Encode_ErrorOnNewWriter(t *testing.T) {
 			New: func() interface{} {
 				return &flateWriter{
 					writer: nil,
-					err:    errors.New("new writer error"),
 				}
 			},
 		},
@@ -93,7 +93,7 @@ func Test_Encode_ErrorInCopyZeroAlloc(t *testing.T) {
 	d := &flateEncoder{
 		flWriterPool: &sync.Pool{
 			New: func() interface{} {
-				w, err := flate.NewWriter(io.Discard, flate.DefaultCompression)
+				w, err := zlib.NewWriterLevel(io.Discard, flate.DefaultCompression)
 				return &flateWriter{
 					writer: w,
 					err:    err,

index_document_test.go

@@ -41,6 +41,30 @@ func Test_AddOrUpdateDocumentsWithContentEncoding(t *testing.T) {
 				},
 			},
 		},
+		{
+			Name:            "TestIndexBasicAddDocumentsWithDeflate",
+			ContentEncoding: DeflateEncoding,
+			Request: []map[string]interface{}{
+				{"ID": "123", "Name": "Pride and Prejudice"},
+			},
+			Response: struct {
+				WantResp *TaskInfo
+				DocResp  DocumentsResult
+			}{WantResp: &TaskInfo{
+				TaskUID: 0,
+				Status:  "enqueued",
+				Type:    TaskTypeDocumentAdditionOrUpdate,
+			},
+				DocResp: DocumentsResult{
+					Results: []map[string]interface{}{
+						{"ID": "123", "Name": "Pride and Prejudice"},
+					},
+					Limit:  3,
+					Offset: 0,
+					Total:  1,
+				},
+			},
+		},
 		{
 			Name:            "TestIndexBasicAddDocumentsWithBrotli",
 			ContentEncoding: BrotliEncoding,

index_search_test.go

@@ -50,6 +50,39 @@ func TestIndex_SearchWithContentEncoding(t *testing.T) {
 				Limit:              20,
 			},
 		},
+		{
+			Name:            "SearchResultWithDeflateEncoding",
+			ContentEncoding: DeflateEncoding,
+			Query:           "prince",
+			Request: &SearchRequest{
+				IndexUID: "indexUID",
+			},
+			Response: &SearchResponse{
+				Hits: []interface{}{
+					map[string]interface{}{
+						"book_id": float64(456), "title": "Le Petit Prince",
+					},
+					map[string]interface{}{
+						"Tag": "Epic fantasy", "book_id": float64(4), "title": "Harry Potter and the Half-Blood Prince",
+					},
+				},
+				EstimatedTotalHits: 2,
+				Offset:             0,
+				Limit:              20,
+			},
+			FacetRequest: &FacetSearchRequest{
+				FacetName:  "tag",
+				FacetQuery: "Novel",
+			},
+			FacetResponse: &FacetSearchResponse{
+				FacetHits: []interface{}{
+					map[string]interface{}{
+						"value": "Novel", "count": float64(5),
+					},
+				},
+				FacetQuery: "Novel",
+			},
+		},
 		{
 			Name:            "SearchResultWithBrotliEncoding",
 			ContentEncoding: BrotliEncoding,

meilisearch_test.go

@@ -2186,6 +2186,12 @@ func Test_ListIndex(t *testing.T) {
 			Indexes: []string{"foo", "bar"},
 			WantErr: false,
 		},
+		{
+			Name:            "Basic get list of indexes with deflate encoding",
+			Indexes:         []string{"foo", "bar"},
+			ContentEncoding: DeflateEncoding,
+			WantErr:         false,
+		},
 		{
 			Name:            "Basic get list of indexes with encoding",
 			Indexes:         []string{"foo", "bar"},