Fix Elasticsearch version in ES OTEL writer

cmd/opentelemetry/app/exporter/elasticsearchexporter/exporter.go

@@ -16,7 +16,6 @@ package elasticsearchexporter
 
 import (
 	"context"
-
 	"go.opentelemetry.io/collector/component"
 	"go.opentelemetry.io/collector/exporter/exporterhelper"
 
@@ -31,7 +30,7 @@ func new(ctx context.Context, config *Config, params component.ExporterCreatePar
 		return nil, err
 	}
 	if config.Primary.IsCreateIndexTemplates() {
-		spanMapping, serviceMapping := es.GetSpanServiceMappings(esCfg.GetNumShards(), esCfg.GetNumReplicas(), esCfg.GetVersion())
+		spanMapping, serviceMapping := es.GetSpanServiceMappings(esCfg.GetNumShards(), esCfg.GetNumReplicas(), uint(w.esClientVersion()))
 		if err = w.CreateTemplates(ctx, spanMapping, serviceMapping); err != nil {
 			return nil, err
 		}

cmd/opentelemetry/app/exporter/elasticsearchexporter/spanstore.go

@@ -220,3 +220,7 @@ type bulkItem struct {
 	// isService indicates that this bulk operation is for service index
 	isService bool
 }
+
+func (w *esSpanWriter) esClientVersion() int {
+	return w.client.MajorVersion()
+}

cmd/opentelemetry/app/internal/esclient/client.go

@@ -44,6 +44,9 @@ type ElasticsearchClient interface {
 	Search(ctx context.Context, query SearchBody, size int, indices ...string) (*SearchResponse, error)
 	// MultiSearch searches data via /_msearch
 	MultiSearch(ctx context.Context, queries []SearchBody) (*MultiSearchResponse, error)
+
+	// Major version returns major ES version
+	MajorVersion() int
 }
 
 // BulkResponse is a response returned by Elasticsearch Bulk API
@@ -172,20 +175,20 @@ func NewElasticsearchClient(params config.Configuration, logger *zap.Logger) (El
 	if err != nil {
 		return nil, err
 	}
-	if params.GetVersion() == 0 {
+	esVersion := int(params.GetVersion())
+	if esVersion == 0 {
 		esPing := elasticsearchPing{
 			username:     params.Username,
 			password:     params.Password,
 			roundTripper: roundTripper,
 		}
-		esVersion, err := esPing.getVersion(params.Servers[0])
+		esVersion, err = esPing.getVersion(params.Servers[0])
 		if err != nil {
 			return nil, err
 		}
 		logger.Info("Elasticsearch detected", zap.Int("version", esVersion))
-		params.Version = uint(esVersion)
 	}
-	return newElasticsearchClient(int(params.Version), clientConfig{
+	return newElasticsearchClient(esVersion, clientConfig{
 		DiscoverNotesOnStartup: params.Sniffer,
 		Addresses:              params.Servers,
 		Username:               params.Username,

cmd/opentelemetry/app/internal/esclient/es6client.go

@@ -152,3 +152,7 @@ func (es *elasticsearch6Client) MultiSearch(ctx context.Context, queries []Searc
 	}
 	return r, nil
 }
+
+func (es *elasticsearch6Client) MajorVersion() int {
+	return 6
+}

cmd/opentelemetry/app/internal/esclient/es6client_test.go

@@ -70,3 +70,9 @@ func TestES6MultiSearch(t *testing.T) {
 		return newElasticsearch6Client(clientConfig{}, tripper)
 	})
 }
+
+func TestES6Version(t *testing.T) {
+	c, err := newElasticsearch6Client(clientConfig{}, nil)
+	require.NoError(t, err)
+	assert.Equal(t, 6, c.MajorVersion())
+}

cmd/opentelemetry/app/internal/esclient/es7client.go

@@ -158,6 +158,10 @@ func (es *elasticsearch7Client) MultiSearch(ctx context.Context, queries []Searc
 	return convertMultiSearchResponse(r), nil
 }
 
+func (es *elasticsearch7Client) MajorVersion() int {
+	return 7
+}
+
 func convertMultiSearchResponse(response *es7multiSearchResponse) *MultiSearchResponse {
 	mResponse := &MultiSearchResponse{}
 	for _, r := range response.Responses {

cmd/opentelemetry/app/internal/esclient/es7client_test.go

@@ -70,3 +70,9 @@ func TestES7MultiSearch(t *testing.T) {
 		return newElasticsearch7Client(clientConfig{}, tripper)
 	})
 }
+
+func TestES7Version(t *testing.T) {
+	c, err := newElasticsearch7Client(clientConfig{}, nil)
+	require.NoError(t, err)
+	assert.Equal(t, 7, c.MajorVersion())
+}

cmd/opentelemetry/app/internal/reader/es/esdependencyreader/dependency_store_test.go

@@ -189,3 +189,7 @@ func (m *mockClient) Search(ctx context.Context, query esclient.SearchBody, size
 func (m mockClient) MultiSearch(ctx context.Context, queries []esclient.SearchBody) (*esclient.MultiSearchResponse, error) {
 	panic("implement me")
 }
+
+func (m *mockClient) MajorVersion() int {
+	panic("implement me")
+}

cmd/opentelemetry/app/internal/reader/es/esspanreader/span_reader_test.go

@@ -182,3 +182,7 @@ func (m *mockClient) Search(ctx context.Context, query esclient.SearchBody, size
 func (m *mockClient) MultiSearch(ctx context.Context, queries []esclient.SearchBody) (*esclient.MultiSearchResponse, error) {
 	return m.multiSearchResponse, nil
 }
+
+func (m *mockClient) MajorVersion() int {
+	panic("implement me")
+}