/// <summary>
/// Sets up the asp.net core application to log to a Splunk instance using a Splunk Http Event Collector.
/// Refernce: https://docs.splunk.com/Documentation/SplunkCloud/8.2.2106/Data/UsetheHTTPEventCollector
/// Note: The following configuration variables are required:
/// SPLUNK_HOST => The url of the splunk collector endpoint (ie: http(s)://{Splunk Host}/services/collector)
/// SPLUNK_TOKEN => Security token
/// </summary>
/// <param name="startup"></param>
/// <param name="app"></param>
public static ILogger SetupSplunk(this CoreWebStartup startup, IApplicationBuilder app)
{
_ = app?.UseSerilog();
var splunkHost = startup.Configuration.GetValue <string>("SPLUNK_HOST");
var splunkToken = startup.Configuration.GetValue <string>("SPLUNK_TOKEN");
return(SeriLogExtensions.GetLogger(() => new LoggerConfiguration()
.MinimumLevel.Debug()
.Enrich.FromLogContext()
.Enrich.WithMachineName()
.WriteTo.Console()
.WriteTo.EventCollector(splunkHost, splunkToken)
.CreateLogger()));
}
/// <summary>
/// Sets up the asp.net core application to log to a Elasticsearch instance.
/// Refernce: https://github.com/serilog/serilog-sinks-elasticsearch/wiki/basic-setup
/// Note: The following configuration variables are required:
/// ELASTICSEARCH_HOST => The url of the Elasticsearch endpoint (ie: http(s)://{Elasticsearch Host}/9200)
/// Note: The following configuration values should be set for Elasticsearch basic authentication
/// ELASTICSEARCH_USERNAME
/// ELASTICSEARCH_PASSWORD
/// Note: The following configuration values should be set for Elasticsearch api key authentication
/// ELASTICSEARCH_USERNAME => This should be the "id" of your token
/// ELASTICSEARCH_APIKEY => This should be the "api_key" of your token
/// Note: IF your Elasticsearch instance is using an invalid SSL cert
/// ELASTICSEARCH_DISABLE_SSL_VALIDATION => set this value to "true"
/// </summary>
/// <param name="startup"></param>
/// <param name="app"></param>
public static ILogger SetupElasticsearch(this CoreWebStartup startup, IApplicationBuilder app)
{
_ = (app?.UseSerilog());
return(SeriLogExtensions.GetLogger(() =>
{
var environment = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");
var host = startup.Configuration.GetValue <string>("ELASTICSEARCH_HOST", "http://localhost:9200");
var username = startup.Configuration.GetValue <string>("ELASTICSEARCH_USERNAME");
var password = startup.Configuration.GetValue <string>("ELASTICSEARCH_PASSWORD");
var apiKey = startup.Configuration.GetValue <string>("ELASTICSEARCH_APIKEY");
var elastiOptions = new ElasticsearchSinkOptions(new Uri(host))
{
IndexFormat = $"{startup.StartupAssembly.GetName().Name.ToLower().Replace(".", "-")}-{environment?.ToLower().Replace(".", "-")}-{DateTime.UtcNow:yy-MM}",
AutoRegisterTemplate = true,
AutoRegisterTemplateVersion = AutoRegisterTemplateVersion.ESv7,
};
var modifyConfigSettings = new Func <Func <ConnectionConfiguration>, ConnectionConfiguration>((authFunc) =>
{
var config = authFunc();
if (startup.Configuration.GetValue <bool>("ELASTICSEARCH_DISABLE_SSL_VALIDATION"))
{
_ = config.ServerCertificateValidationCallback((obj, cert, chain, policyErrors) => true);
}
return config;
});
if (!string.IsNullOrWhiteSpace(password))
{
elastiOptions.ModifyConnectionSettings = config => modifyConfigSettings(() => config.BasicAuthentication(username, password));
}
else if (!string.IsNullOrWhiteSpace(apiKey))
{
elastiOptions.ModifyConnectionSettings = config => modifyConfigSettings(() => config.ApiKeyAuthentication(username, apiKey));
}
return new LoggerConfiguration()
{
}
.MinimumLevel.Information()
.Enrich.FromLogContext()
.Enrich.WithMachineName()
.WriteTo.Console()
.WriteTo.Elasticsearch(elastiOptions)
.Enrich.WithProperty("Environment", environment)
.CreateLogger();
}));
}
