internal void Load(String json)
{
JsonConfigurationParser parser = new JsonConfigurationParser();
try
{
Data = parser.Parse(json);
}
catch (JsonReaderException e)
{
string errorLine = string.Empty;
throw new FormatException($"json 配置文本格式错误：行号：{e.LineNumber}。", e);
}
}
private async Task LoadConfigurationDataAsync(ZookeeperClient client, bool firstLoad, string path)
{
try
{
var data = (await client.GetDataAsync(path)).ToArray();
if (firstLoad)
{
await client.SubscribeDataChange(path, this.OnNodeDataChangeAsync);
}
if (data != null)
{
LoadKey();
data = OpenSSL.RSADecrypt(data, _key);
//data = OpenSSL.RSADecrypt(data, _key);
string json = String.Empty;
if (data.Length <= 3)
{
throw new Exception("配置中心返回了错误的配置数据");
}
if (data[0] == 0xef && data[1] == 0xbb && data[2] == 0xbf)
{
json = new UTF8Encoding(false).GetString(data, 3, data.Length - 3);
}
else
{
json = Encoding.UTF8.GetString(data);
}
var parser = new JsonConfigurationParser();
//配置中心不能影响本地的用于构造配置节点路径的配置，否则将造成拉取错误配置。
this.Data = parser.Parse(json,
ConfigurationPath.Combine("Schubert", "Group"),
ConfigurationPath.Combine("Schubert", "AppSystemName"),
ConfigurationPath.Combine("Schubert", "Version"),
ConfigurationPath.Combine("Schubert", "Env"),
ConfigurationPath.Combine("Schubert", "Configuration"));
OnReload();
//Microsoft.Extensions.Configuration.FileConfigurationProvider的源码有这个代码OnReload()
//OnReload会让GetReloadToken通知ChangeToken.OnChange去调用changeTokenConsumer的委托
//changeTokenConsumer的委托中如果走load等同逻辑的代码,机会再次调用OnReload,然后就挂
//ChangeToken.OnChange方案的用处是用来做外置事件源的处理,不能做内部事件调用
//Action reload = OnReload;
//reload();
//不加OnReload,完全不起作用,但是为什么叫OnReload
}
}
catch (TimeoutException ex)
{
string error = $"连接到配置中心（zk_server: {client.Options.ConnectionString }）超时。";
HandleError(firstLoad, error, ex);
}
catch (FormatException ex)
{
string error = $"从配置中心加载配置发生错误，可能由于配置文件格式错误（zk_server: {client.Options.ConnectionString }, paht:{path}）超时。";
HandleError(firstLoad, error, ex);
}
}
