PLT-7302: Aggregate Elasticsearch indexes over a certain age. (#7224)

* PLT-7302: Aggregate Elasticsearch indexes over a certain age.

This is done by a scheduled daily job, in order to keep the shard count
to a sensible level in Elasticsearch.

* Use map[string]string instead of StringMap

store/sql_job_store_test.go

@@ -17,9 +17,9 @@ func TestJobSaveGet(t *testing.T) {
 		Id:     model.NewId(),
 		Type:   model.NewId(),
 		Status: model.NewId(),
-		Data: map[string]interface{}{
-			"Processed":     0,
-			"Total":         12345,
+		Data:   map[string]string{
+			"Processed":     "0",
+			"Total":         "12345",
 			"LastProcessed": "abcd",
 		},
 	}
@@ -36,6 +36,8 @@ func TestJobSaveGet(t *testing.T) {
 		t.Fatal(result.Err)
 	} else if received := result.Data.(*model.Job); received.Id != job.Id {
 		t.Fatal("received incorrect job after save")
+	} else if received.Data["Total"] != "12345" {
+		t.Fatal("data field was not retrieved successfully:", received.Data)
 	}
 }
 
@@ -184,6 +186,9 @@ func TestJobGetAllByStatus(t *testing.T) {
 			Type:     jobType,
 			CreateAt: 1000,
 			Status:   status,
+			Data:     map[string]string{
+				"test": "data",
+			},
 		},
 		{
 			Id:       model.NewId(),
@@ -214,10 +219,10 @@ func TestJobGetAllByStatus(t *testing.T) {
 		t.Fatal(result.Err)
 	} else if received := result.Data.([]*model.Job); len(received) != 3 {
 		t.Fatal("received wrong number of jobs")
-	} else if received[0].Id != jobs[0].Id && received[1].Id != jobs[0].Id {
-		t.Fatal("should've received first jobs")
-	} else if received[0].Id != jobs[1].Id && received[1].Id != jobs[1].Id {
-		t.Fatal("should've received second jobs")
+	} else if received[0].Id != jobs[1].Id || received[1].Id != jobs[0].Id || received[2].Id != jobs[2].Id {
+		t.Fatal("should've received jobs ordered by CreateAt time")
+	} else if received[1].Data["test"] != "data" {
+		t.Fatal("should've received job data field back as saved")
 	}
 }
 
@@ -237,7 +242,7 @@ func TestJobUpdateOptimistically(t *testing.T) {
 	job.LastActivityAt = model.GetMillis()
 	job.Status = model.JOB_STATUS_IN_PROGRESS
 	job.Progress = 50
-	job.Data = map[string]interface{}{
+	job.Data = map[string]string{
 		"Foo": "Bar",
 	}
 

store/sql_supplier.go

@@ -786,6 +786,8 @@ func (me mattermConverter) ToDb(val interface{}) (interface{}, error) {
 	switch t := val.(type) {
 	case model.StringMap:
 		return model.MapToJson(t), nil
+	case map[string]string:
+		return model.MapToJson(model.StringMap(t)), nil
 	case model.StringArray:
 		return model.ArrayToJson(t), nil
 	case model.StringInterface:
@@ -809,6 +811,16 @@ func (me mattermConverter) FromDb(target interface{}) (gorp.CustomScanner, bool)
 			return json.Unmarshal(b, target)
 		}
 		return gorp.CustomScanner{Holder: new(string), Target: target, Binder: binder}, true
+	case *map[string]string:
+		binder := func(holder, target interface{}) error {
+			s, ok := holder.(*string)
+			if !ok {
+				return errors.New(utils.T("store.sql.convert_string_map"))
+			}
+			b := []byte(*s)
+			return json.Unmarshal(b, target)
+		}
+		return gorp.CustomScanner{Holder: new(string), Target: target, Binder: binder}, true
 	case *model.StringArray:
 		binder := func(holder, target interface{}) error {
 			s, ok := holder.(*string)