/// <summary>
/// This method is called for every Lambda invocation. This method takes in an S3 event object and can be used
/// to respond to S3 notifications.
/// </summary>
/// <param name="evnt"></param>
/// <param name="context"></param>
/// <returns></returns>
public async Task <string> S3EventHandler(S3Event evnt, ILambdaContext context)
{
LambdaLogger.Log("Event triggered, starting S3EventHandler. Event: " + JsonConvert.SerializeObject(evnt));
var s3Event = evnt.Records?[0].S3;
if (s3Event == null)
{
return(null);
}
try
{
string responsebody = "";
GetObjectRequest getRequest = new GetObjectRequest()
{
BucketName = BUCKET_NAME,
Key = evnt.Records.FirstOrDefault().S3.Object.Key
};
using (GetObjectResponse getResponse = await S3Client.GetObjectAsync(getRequest))
using (Stream responseStream = getResponse.ResponseStream)
using (StreamReader reader = new StreamReader(responseStream))
{
responsebody = reader.ReadToEnd();
LambdaLogger.Log("Retrieved object from S3 and read. Body: " + responsebody);
}
ContentEntity content = new ContentEntity()
{
ContentKey = getRequest.Key,
ContentHtml = responsebody
};
LambdaLogger.Log("Calling Update content. Content: " + JsonConvert.SerializeObject(content));
ContentUtility utility = new ContentUtility();
bool result = utility.UpdateContent(content);
CopyObjectRequest copyRequest = new CopyObjectRequest
{
SourceBucket = BUCKET_NAME,
SourceKey = evnt.Records.FirstOrDefault().S3.Object.Key,
DestinationBucket = IMPORT_BUCKET_NAME,
DestinationKey = evnt.Records.FirstOrDefault().S3.Object.Key
};
LambdaLogger.Log("Copying to migrated bucket. Copy Request: " + JsonConvert.SerializeObject(copyRequest));
var copyResponse = S3Client.CopyObjectAsync(copyRequest);
LambdaLogger.Log("Copy executed. Copy Request: " + JsonConvert.SerializeObject(copyResponse));
DeleteObjectRequest delRequest = new DeleteObjectRequest
{
BucketName = BUCKET_NAME,
Key = evnt.Records.FirstOrDefault().S3.Object.Key
};
LambdaLogger.Log("Delete request created, calling now ... Request: " + JsonConvert.SerializeObject(delRequest));
var delResponse = S3Client.DeleteObjectAsync(delRequest);
LambdaLogger.Log("Delete request processed. Response: " + JsonConvert.SerializeObject(delResponse));
return(result ? "Content was updated successfully." : "Content failed to update, please check the error logs.");
}
catch (Exception e)
{
context.Logger.LogLine($"Error getting object {s3Event.Object.Key} from bucket {s3Event.Bucket.Name}. Make sure they exist and your bucket is in the same region as this function.");
context.Logger.LogLine(e.Message);
context.Logger.LogLine(e.StackTrace);
return("Error occured, please check the logs.");
}
}
