mongodb数据库迁移变更的解决方案

{version}_{title}.up.{extension}
{version}_{title}.down.{extension}

0001_init_database.down.JSON  
0001_init_database.up.json

# migrate create [-ext E] [-dir D] [-seq] [-digits N] [-fORMat] NAME
$ migrate create -ext json -dir migrations -seq init_database
~/migrations/000001_init_database.up.json
~/migrations/000001_init_database.down.json

$ cat migrations/000001_init_database.up.json
[
    {
       "insert": "test",
       "documents": [{"name": "aaa"}]
    }
]
$migrate -verbose -source file://migrations --database mongodb://root:pwd@<数据库IP>:27017/migrations?authSource=admin  up
2021/08/31 14:26:06 Start buffering 1/u init_database
2021/08/31 14:26:08 Read and execute 1/u init_database
2021/08/31 14:26:08 Finished 1/u init_database (read 1.516025172s, ran 75.143261ms)
2021/08/31 14:26:08 Finished after 1.654028624s
2021/08/31 14:26:08 Closing source and database

mongos> use migrations;
switched to db migrations
mongos> show collections;
migrate_advisory_lock
schema_migrations
test
mongos> db.test.find()
{ "_id" : ObjectId("612e3f5febb6de55cdeec1de"), "name" : "aaa" }
# 多生成了两张表，其中schema_migrations为迁移数据记录;
mongos> db.schema_migrations.find();
{ "_id" : ObjectId("612dcb8023fbb5b85368b874"), "version" : 1, "dirty" : false }

$ migrate -verbose -source file://migrations --database mongodb://root:pwd@<数据库IP>:27017/migrations?authSource=admin force 000004
2021/08/31 14:34:52 Finished after 89.470244ms
2021/08/31 14:34:52 Closing source and database
# 查看数据库版本已经修改到了4版本，再次进行up操作则会被告知no change；
mongos> db.schema_migrations.find();
{ "_id" : ObjectId("612dcd8c1e88c95afcb426fe"), "version" : 4, "dirty" : false }