opensearchapi: add msearch function to rootClient

Signed-off-by: Jakob Hahn <[email protected]>

opensearchapi/api_msearch-params.go

@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// The OpenSearch Contributors require contributions made to
+// this file be licensed under the Apache-2.0 license or a
+// compatible open source license.
+//
+// Modifications Copyright OpenSearch Contributors. See
+// GitHub history for details.
+
+// Licensed 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 opensearchapi
+
+import (
+	"strconv"
+)
+
+// MSearchParams represents possible parameters for the MSearchReq
+type MSearchParams struct {
+	CcsMinimizeRoundtrips      *bool
+	MaxConcurrentSearches      *int
+	MaxConcurrentShardRequests *int
+	PreFilterShardSize         *int
+	RestTotalHitsAsInt         *bool
+	SearchType                 string
+	TypedKeys                  *bool
+
+	Pretty     bool
+	Human      bool
+	ErrorTrace bool
+}
+
+func (r MSearchParams) get() map[string]string {
+	params := make(map[string]string)
+
+	if r.CcsMinimizeRoundtrips != nil {
+		params["ccs_minimize_roundtrips"] = strconv.FormatBool(*r.CcsMinimizeRoundtrips)
+	}
+
+	if r.MaxConcurrentSearches != nil {
+		params["max_concurrent_searches"] = strconv.FormatInt(int64(*r.MaxConcurrentSearches), 10)
+	}
+
+	if r.MaxConcurrentShardRequests != nil {
+		params["max_concurrent_shard_requests"] = strconv.FormatInt(int64(*r.MaxConcurrentShardRequests), 10)
+	}
+
+	if r.PreFilterShardSize != nil {
+		params["pre_filter_shard_size"] = strconv.FormatInt(int64(*r.PreFilterShardSize), 10)
+	}
+
+	if r.RestTotalHitsAsInt != nil {
+		params["rest_total_hits_as_int"] = strconv.FormatBool(*r.RestTotalHitsAsInt)
+	}
+
+	if r.SearchType != "" {
+		params["search_type"] = r.SearchType
+	}
+
+	if r.TypedKeys != nil {
+		params["typed_keys"] = strconv.FormatBool(*r.TypedKeys)
+	}
+
+	if r.Pretty {
+		params["pretty"] = "true"
+	}
+
+	if r.Human {
+		params["human"] = "true"
+	}
+
+	if r.ErrorTrace {
+		params["error_trace"] = "true"
+	}
+
+	return params
+}

opensearchapi/api_msearch.go

@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// The OpenSearch Contributors require contributions made to
+// this file be licensed under the Apache-2.0 license or a
+// compatible open source license.
+//
+// Modifications Copyright OpenSearch Contributors. See
+// GitHub history for details.
+
+// Licensed 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 opensearchapi
+
+import (
+	"context"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/opensearch-project/opensearch-go/v2"
+)
+
+// MSearch executes a /_msearch request with the optional MSearchReq
+func (c Client) MSearch(ctx context.Context, req MSearchReq) (*MSearchResp, error) {
+	var (
+		data MSearchResp
+		err  error
+	)
+	if data.response, err = c.do(ctx, req, &data); err != nil {
+		return &data, err
+	}
+
+	return &data, nil
+}
+
+// MSearchReq represents possible options for the /_msearch request
+type MSearchReq struct {
+	Indices []string
+
+	Body io.Reader
+
+	Header http.Header
+	Params MSearchParams
+}
+
+// GetRequest returns the *http.Request that gets executed by the client
+func (r MSearchReq) GetRequest() (*http.Request, error) {
+	indices := strings.Join(r.Indices, ",")
+	var path strings.Builder
+	path.Grow(len("//_msearch") + len(indices))
+	if len(r.Indices) > 0 {
+		path.WriteString("/")
+		path.WriteString(indices)
+	}
+	path.WriteString("/_msearch")
+	return opensearch.BuildRequest(
+		"POST",
+		path.String(),
+		r.Body,
+		r.Params.get(),
+		r.Header,
+	)
+}
+
+// MSearchResp represents the returned struct of the /_msearch response
+type MSearchResp struct {
+	Took      int `json:"took"`
+	Responses []struct {
+		Took    int  `json:"took"`
+		Timeout bool `json:"timed_out"`
+		Shards  struct {
+			Total      int `json:"total"`
+			Successful int `json:"successful"`
+			Failed     int `json:"failed"`
+			Failures   int `json:"failures"` // Deprecated field
+			Skipped    int `json:"skipped"`
+		} `json:"_shards"`
+		Hits struct {
+			Total struct {
+				Value    int    `json:"value"`
+				Relation string `json:"relation"`
+			} `json:"total"`
+			MaxScore float32     `json:"max_score"`
+			Hits     []SearchHit `json:"hits"`
+		} `json:"hits"`
+		Status int `json:"status"`
+	} `json:"responses"`
+	response *opensearch.Response
+}
+
+// Inspect returns the Inspect type containing the raw *opensearch.Reponse
+func (r MSearchResp) Inspect() Inspect {
+	return Inspect{Response: r.response}
+}

opensearchapi/api_msearch_test.go

@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: Apache-2.0
+//
+// The OpenSearch Contributors require contributions made to
+// this file be licensed under the Apache-2.0 license or a
+// compatible open source license.
+//
+// Modifications Copyright OpenSearch Contributors. See
+// GitHub history for details.
+
+// Licensed 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.
+//
+//go:build integration
+
+package opensearchapi_test
+
+import (
+	"strconv"
+	"strings"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+
+	"github.com/opensearch-project/opensearch-go/v2/opensearchapi"
+	osapitest "github.com/opensearch-project/opensearch-go/v2/opensearchapi/internal/test"
+)
+
+func TestMSearch(t *testing.T) {
+	client, err := opensearchapi.NewDefaultClient()
+	require.Nil(t, err)
+
+	testIndex := "test-msearch"
+	t.Cleanup(func() {
+		client.Indices.Delete(nil, opensearchapi.IndicesDeleteReq{Indices: []string{testIndex}})
+	})
+
+	for i := 1; i <= 2; i++ {
+		_, err = client.Document.Create(
+			nil,
+			opensearchapi.DocumentCreateReq{
+				Index:      testIndex,
+				Body:       strings.NewReader(`{"foo": "bar"}`),
+				DocumentID: strconv.Itoa(i),
+				Params:     opensearchapi.DocumentCreateParams{Refresh: "true"},
+			},
+		)
+		require.Nil(t, err)
+	}
+
+	t.Run("with request", func(t *testing.T) {
+		resp, err := client.MSearch(
+			nil,
+			opensearchapi.MSearchReq{
+				Indices: []string{testIndex},
+				Body:    strings.NewReader("{}\n{\"query\":{\"exists\":{\"field\":\"foo\"}}}\n"),
+			},
+		)
+		require.Nil(t, err)
+		assert.NotEmpty(t, resp)
+		osapitest.CompareRawJSONwithParsedJSON(t, resp, resp.Inspect().Response)
+	})
+
+	t.Run("inspect", func(t *testing.T) {
+		failingClient, err := osapitest.CreateFailingClient()
+		require.Nil(t, err)
+
+		res, err := failingClient.MSearch(nil, opensearchapi.MSearchReq{})
+		assert.NotNil(t, err)
+		assert.NotNil(t, res)
+		osapitest.VerifyInspect(t, res.Inspect())
+	})
+}