How can I send multiple logs to a single CloudWatch log stream using the AWS SDK for .NET?

Question

Are there any code examples on how to send multiple logs to a single CloudWatch log stream using the PutLogEvent API in C#?

Answer 1

Yes, you can use the PutLogEvents method on the AmazonCloudWatchLogsClient class to send multiple logs (commonly referred to as a batch) to a single CloudWatch log stream.

You'll need to construct a PutLogEventsRequest, which has 3 properties:

• LogGroupName (string)
• LogStreamName (string)
• LogEvents (List<InputLogEvent>, which is essentially a list of Message and Timestamp combinations)

Putting all of that together, this should be a good starting point:

using Amazon.CloudWatchLogs;
using Amazon.CloudWatchLogs.Model;

var client = new AmazonCloudWatchLogsClient();

var request = new PutLogEventsRequest
{
    LogGroupName = "your-log-group",
    LogStreamName = "your-log-stream",
    LogEvents = new List<InputLogEvent>
    {
        new InputLogEvent { Message = "Message 1", Timestamp = DateTime.UtcNow },
        new InputLogEvent { Message = "Message 2", Timestamp = DateTime.UtcNow }
    }
};

var response = await client.PutLogEventsAsync(request);

var secondRequest = new PutLogEventsRequest
{
    LogGroupName = "your-log-group",
    LogStreamName = "your-log-stream",
    LogEvents = new List<InputLogEvent>
    {
        new InputLogEvent { Message = "Message 3", Timestamp = DateTime.UtcNow },
        new InputLogEvent { Message = "Message 4", Timestamp = DateTime.UtcNow }
    }
};

var secondResponse = await client.PutLogEventsAsync(secondRequest);