public async Task <string> GetConfigAsync(GetConfigRequest request)
{
if (request == null)
{
throw new NacosException(ConstValue.CLIENT_INVALID_PARAM, "request param invalid");
}
request.Tenant = string.IsNullOrWhiteSpace(request.Tenant) ? _options.Namespace : request.Tenant;
request.Group = string.IsNullOrWhiteSpace(request.Group) ? ConstValue.DefaultGroup : request.Group;
request.CheckParam();
// read from local cache at first
var config = await GetProcessor().GetFailoverAsync(request.DataId, request.Group, request.Tenant);
if (!string.IsNullOrWhiteSpace(config))
{
_logger.LogInformation($"[get-config] get failover ok, dataId={request.DataId}, group={request.Group}, tenant={request.Tenant}, config ={config}");
return(config);
}
try
{
config = await DoGetConfigAsync(request);
}
catch (NacosException ex)
{
if (ConstValue.NO_RIGHT == ex.ErrorCode)
{
throw;
}
_logger.LogWarning($"[get-config] get from server error, dataId={request.DataId}, group={request.Group}, tenant={request.Tenant}, msg={ex.Message}");
}
if (!string.IsNullOrWhiteSpace(config))
{
_logger.LogInformation($"[get-config] content from server {config}, dataId={request.DataId}, group={request.Group}, tenant={request.Tenant}");
await GetProcessor().SaveSnapshotAsync(request.DataId, request.Group, request.Tenant, config);
return(config);
}
config = await GetProcessor().GetSnapshotAync(request.DataId, request.Group, request.Tenant);
return(config);
}
private async Task <string> DoGetConfigAsync(GetConfigRequest request)
{
var responseMessage = await GetAgent().GetAsync(RequestPathValue.CONFIGS, null, request.ToDict());
switch (responseMessage.StatusCode)
{
case System.Net.HttpStatusCode.OK:
var result = await responseMessage.Content.ReadAsStringAsync();
return(result);
case System.Net.HttpStatusCode.NotFound:
await GetProcessor().SaveSnapshotAsync(GetAgent().GetName(), request.DataId, request.Group, request.Tenant, null);
return(null);
case System.Net.HttpStatusCode.Forbidden:
throw new NacosException(ConstValue.NO_RIGHT, $"Insufficient privilege.");
default:
throw new NacosException((int)responseMessage.StatusCode, responseMessage.StatusCode.ToString());
}
}
private async Task <string> DoGetConfigAsync(GetConfigRequest request)
{
var responseMessage = await _clientFactory.DoRequestAsync(HttpMethod.Get, $"{GetBaseUrl()}{RequestPathValue.CONFIGS}", request.ToQueryString(), _options.DefaultTimeOut);
switch (responseMessage.StatusCode)
{
case System.Net.HttpStatusCode.OK:
var result = await responseMessage.Content.ReadAsStringAsync();
return(result);
case System.Net.HttpStatusCode.NotFound:
await _processor.SaveSnapshotAsync(request.DataId, request.Group, request.Tenant, null);
return(null);
case System.Net.HttpStatusCode.Forbidden:
throw new NacosException(ConstValue.NO_RIGHT, $"Insufficient privilege.");
default:
throw new NacosException((int)responseMessage.StatusCode, responseMessage.StatusCode.ToString());
}
}
