/// <summary>
/// Activates logging to AWS CloudWatch
/// </summary>
/// <param name="loggerConfiguration">The LoggerSinkConfiguration to register this sink with.</param>
/// <param name="options">Options to be used for the CloudWatch sink. <see cref="CloudWatchSinkOptions"/> for details.</param>
/// <param name="cloudWatchClient">An AWS CloudWatch client which includes access to AWS and AWS specific settings like the AWS region.</param>
/// <returns></returns>
public static LoggerConfiguration AmazonCloudWatch(this LoggerSinkConfiguration loggerConfiguration, CloudWatchSinkOptions options, IAmazonCloudWatchLogs cloudWatchClient)
{
// validating input parameters
if (loggerConfiguration == null)
{
throw new ArgumentNullException(nameof(loggerConfiguration));
}
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
if (string.IsNullOrEmpty(options.LogGroupName))
{
throw new ArgumentException("options.LogGroupName");
}
if (cloudWatchClient == null)
{
throw new ArgumentNullException(nameof(cloudWatchClient));
}
// create the sink
ILogEventSink sink = new CloudWatchLogSink(cloudWatchClient, options);
// register the sink
return(loggerConfiguration.Sink(sink, options.MinimumLogEventLevel));
}
/// <summary>
/// Add an Amazon CloudWatch sink to your Serilog <see cref="ILogger"/> instance
/// </summary>
/// <param name="loggerConfiguration">The configuration we will add the sink to</param>
/// <param name="logGroup">Name of the Log Group that we will write to (i.e. 'MyLogs')</param>
/// <param name="logStreamNameProvider">The log stream name provider to use to generate log stream names</param>
/// <param name="restrictedToMinimumLevel">Minimum log level to write to CloudWatch</param>
/// <param name="batchSizeLimit">Maximum number of CloudWatch events we will try to write in each batch (default: 100)</param>
/// <param name="createLogGroup">Should we attempt to create the log group if it doesn't already exist?</param>
/// <param name="batchUploadPeriodInSeconds">Maximum length of time that we will hold log events in the queue before triggering a write to CloudWatch (default, 10 seconds)</param>
/// <param name="queueSizeLimit">Maximum number of log events we can hold in the queue before triggering a send to CloudWatch (default 10,000)</param>
/// <param name="maxRetryAttempts">Maximum number of retry attempts we will make to write to CloudWatch before failing</param>
/// <param name="logGroupRetentionPolicy">Retention policy for your Log Group (Default: 1 week (7 days))</param>
/// <param name="textFormatter">The text formatter to use to format the logs (Defaults to <see cref="JsonFormatter"/> )</param>
/// <param name="cloudWatchClient">
/// Client to use to connect to AWS CloudWatch. Defaults to creating a new client which will follow the rules
/// outlined in the <see href="https://docs.aws.amazon.com/sdk-for-net/v3/developer-guide/net-dg-config-creds.html">AWS documentation</see>.
/// </param>
/// <returns><see cref="LoggerConfiguration"/> which can be used to fluently add more config details to your log</returns>
public static LoggerConfiguration AmazonCloudWatch(
this LoggerSinkConfiguration loggerConfiguration,
string logGroup,
ILogStreamNameProvider logStreamNameProvider,
LogEventLevel restrictedToMinimumLevel = LogEventLevel.Verbose,
int batchSizeLimit = 100,
int batchUploadPeriodInSeconds = 10,
bool createLogGroup = true,
int queueSizeLimit = 10000,
byte maxRetryAttempts = 5,
LogGroupRetentionPolicy logGroupRetentionPolicy = LogGroupRetentionPolicy.OneWeek,
ITextFormatter textFormatter = null,
IAmazonCloudWatchLogs cloudWatchClient = null)
{
if (loggerConfiguration == null)
{
throw new ArgumentNullException(nameof(loggerConfiguration));
}
if (String.IsNullOrWhiteSpace(logGroup))
{
throw new ArgumentException("You must provide a log group name (like: 'your-application/your-component')", nameof(logGroup));
}
if (logStreamNameProvider == null)
{
throw new ArgumentNullException(nameof(logStreamNameProvider), "You must provide a log stream name provider (like DefaultLogStreamProvider)");
}
var options = new CloudWatchSinkOptions
{
BatchSizeLimit = batchSizeLimit,
LogGroupName = logGroup,
LogStreamNameProvider = logStreamNameProvider,
CreateLogGroup = createLogGroup,
MinimumLogEventLevel = restrictedToMinimumLevel,
Period = TimeSpan.FromSeconds(batchUploadPeriodInSeconds),
QueueSizeLimit = queueSizeLimit,
RetryAttempts = maxRetryAttempts,
LogGroupRetentionPolicy = logGroupRetentionPolicy,
TextFormatter = textFormatter ?? new JsonFormatter()
};
if (options == null)
{
throw new ArgumentNullException(nameof(options));
}
var client = cloudWatchClient ?? new AmazonCloudWatchLogsClient();
// Create and register the sink
var sink = new CloudWatchLogSink(client, options);
return(loggerConfiguration.Sink(sink, options.MinimumLogEventLevel));
}
