Question

我正在尝试将现有的（演示）项目从Akka.Net 1.0.8升级到更新的（1.3.2或其他）。

我坚持要加载SQL服务器持久性。我采取了以下步骤：

创建了一个空白项目，并包含了Akka.Persistence.SqlServer包及其所有依赖项
从here复制HOCON配置示例：
- 将数据库连接字符串更改为现有数据库
- 将自动初始化设置为'on'
- 修正了akka.persistence.journal-store.sql-server.plugin-dispatcher
创建了一个演员系统
检查了SQL Server配置是否存在我的连接字符串

结果：

1.3.2 ：连接字符串不存在（似乎是默认的回退配置），数据库中没有任何反应
1.0.8 ：存在连接字符串，配置似乎正确，表在空数据库中创建。

这是我使用的HOCON配置：

akka.persistence{
journal {
  plugin = "akka.persistence.journal.sql-server"
    sql-server {
        # qualified type name of the SQL Server persistence journal actor
        class = "Akka.Persistence.SqlServer.Journal.SqlServerJournal, Akka.Persistence.SqlServer"

        # dispatcher used to drive journal actor
        plugin-dispatcher = "akka.actor.default-dispatcher"

        # connection string used for database access
        connection-string = "Data Source=(LocalDB)\\MSSQLLocalDB;Initial Catalog=AkkaPersistence;Integrated Security=True"

        # default SQL commands timeout
        connection-timeout = 30s

        # SQL server schema name to table corresponding with persistent journal
        schema-name = dbo

        # SQL server table corresponding with persistent journal
        table-name = EventJournal

        # should corresponding journal table be initialized automatically
        auto-initialize = on

        # timestamp provider used for generation of journal entries timestamps
        timestamp-provider = "Akka.Persistence.Sql.Common.Journal.DefaultTimestampProvider, Akka.Persistence.Sql.Common"

        # metadata table
        metadata-table-name = Metadata
    }
}

snapshot-store {
  plugin = "akka.persistence.snapshot-store.sql-server"
    sql-server {

        # qualified type name of the SQL Server persistence journal actor
        class = "Akka.Persistence.SqlServer.Snapshot.SqlServerSnapshotStore, Akka.Persistence.SqlServer"

        # dispatcher used to drive journal actor
        plugin-dispatcher = "akka.actor.default-dispatcher"

        # connection string used for database access
        connection-string = "Data Source=(LocalDB)\\MSSQLLocalDB;Initial Catalog=AkkaPersistence;Integrated Security=True"

        # default SQL commands timeout
        connection-timeout = 30s

        # SQL server schema name to table corresponding with persistent journal
        schema-name = dbo

        # SQL server table corresponding with persistent journal
        table-name = SnapshotStore

        # should corresponding journal table be initialized automatically
        auto-initialize = on
    }
}
}

有没有办法解决加载HOCON配置的问题？

Answer 1

麻烦在于Akka.Persistence.SqlServer中使用的SQL在1.0.8和1.3.2之间发生了显着变化。

恕我直言，如果它只是一个演示应用程序，请删除并重新创建该表。这是最简单的路线。

否则，您将不得不编写一个迁移脚本，以便从1.0.8格式转换为1.3.2中的稳定格式：https://github.com/akkadotnet/Akka.Persistence.SqlServer#table-schema

Akka.Net SQL服务器持久性配置似乎无法加载

1 个答案: