我正在测试代码直接来自这里的控制台应用程序:https://docs.microsoft.com/en-us/azure/azure-monitor/app/ilogger#
我基本上复制了代码并将其指向新的天蓝色应用洞察实例。但是,没有任何日志显示在应用洞察中。我错过了什么吗?
static void Main(string[] args)
{
// Create DI container.
IServiceCollection services = new ServiceCollection();
// Add the logging pipelines to use. We are using Application Insights only here.
services.AddLogging(loggingBuilder =>
{
// Optional: Apply filters to configure LogLevel Trace or above is sent to ApplicationInsights for all
// categories.
loggingBuilder.AddFilter<ApplicationInsightsLoggerProvider>("", LogLevel.Trace);
loggingBuilder.AddApplicationInsights(******);
});
// Build ServiceProvider.
IServiceProvider serviceProvider = services.BuildServiceProvider();
ILogger<Program> logger = serviceProvider.GetRequiredService<ILogger<Program>>();
logger.LogCritical("critical message working");
// Begin a new scope. This is optional. Epecially in case of AspNetCore request info is already
// present in scope.
using (logger.BeginScope(new Dictionary<string, object> { { "Method", nameof(Main) } }))
{
logger.LogWarning("Logger is working - warning"); // this will be captured by Application Insights.
}
}
代码是正确的,但是你遇到了ApplicationInsights和Console应用程序的已知问题 - 应用程序在ApplicationInsights可以将数据发送到后端之前就已经死了。 (数据不会立即发送,而是按时间间隔进行批处理。)
添加约30秒的睡眠应该有助于你的情况。 Thread.sleep代码(31000);
在常规控制台应用程序中,文档建议进行显式刷新。 https://docs.microsoft.com/en-us/azure/azure-monitor/app/console#full-example
但在ILogger案例中,您无法控制TelemetryClient实例。因此,您最好的选择是控制频道,并在频道上调用flush,然后进行小睡眠。修改后的代码如下。
class Program
{
static void Main(string[] args)
{
// Create DI container.
IServiceCollection services = new ServiceCollection();
var channel = new InMemoryChannel();
services.Configure<TelemetryConfiguration>(
(config) =>
{
config.TelemetryChannel = channel;
}
);
// Add the logging pipelines to use. We are using Application Insights only here.
services.AddLogging(loggingBuilder =>
{
// Optional: Apply filters to configure LogLevel Trace or above is sent to ApplicationInsights for all
// categories.
loggingBuilder.AddFilter<ApplicationInsightsLoggerProvider>("", LogLevel.Trace);
loggingBuilder.AddApplicationInsights("***");
});
// Build ServiceProvider.
IServiceProvider serviceProvider = services.BuildServiceProvider();
ILogger<Program> logger = serviceProvider.GetRequiredService<ILogger<Program>>();
logger.LogCritical("critical message working");
// Begin a new scope. This is optional. Epecially in case of AspNetCore request info is already
// present in scope.
using (logger.BeginScope(new Dictionary<string, object> { { "Method", nameof(Main) } }))
{
logger.LogWarning("Logger is working - warning"); // this will be captured by Application Insights.
}
channel.Flush();
Thread.Sleep(1000);
}
}