/
copy.go
61 lines (55 loc) · 1.47 KB
/
copy.go
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// Copyright August 2020 Maxset Worldwide Inc.
//
// 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 main
import (
"context"
"fmt"
"go.mongodb.org/mongo-driver/bson"
"go.mongodb.org/mongo-driver/mongo"
)
var collsToCopy = []string{
"acronym",
"chunk",
"file",
"group",
"reset",
"store",
"user",
}
func copyColls(ctx context.Context, client *mongo.Client, src, dest string) error {
srcDB := client.Database(src)
destDB := client.Database(dest)
for _, coll := range collsToCopy {
srcColl := srcDB.Collection(coll)
destColl := destDB.Collection(coll)
cursor, err := srcColl.Find(ctx, bson.D{})
if err != nil {
return err
}
var result []interface{}
if err := cursor.All(ctx, &result); err == nil {
if len(result) > 0 {
_, err = destColl.InsertMany(ctx, result)
if err != nil {
return err
}
} else if !*quiet {
fmt.Printf("No data in %s collection\n", coll)
}
} else if err != mongo.ErrNoDocuments {
return err
}
}
return nil
}