how to pass cloudwatch logs to lambda in terraform - amazon-web-services

Question

I have created two lambda functions. now i wanted to pass all the cloudwatch logs from first lambda to second lambda. i have created new log group name and subscription filter to pass the cloudwatch logs to second lambda.
I am not sure if this configuration needs to be added any resource.
resource "aws_lambda_function" "audit-logs" {
filename = var.audit_filename
function_name = var.audit_function
source_code_hash = filebase64sha256(var.audit_filename)
role = module.lambda_role.arn
handler = "cloudwatch.lambda_handler"
runtime = "python3.9"
timeout = 200
description = "audit logs"
depends_on = [module.lambda_role, module.security_group]
}
resource "aws_cloudwatch_log_group" "splunk_cloudwatch_loggroup" {
name = "/aws/lambda/audit_logs"
}
resource "aws_lambda_permission" "allow_cloudwatch_for_splunk" {
statement_id = "AllowExecutionFromCloudWatch"
action = "lambda:InvokeFunction"
function_name = aws_lambda_function.splunk-logs.arn
principal = "logs.amazonaws.com" #"logs.region.amazonaws.com"
source_arn = "${aws_cloudwatch_log_group.splunk_cloudwatch_loggroup.arn}:*"
}
resource "aws_cloudwatch_log_subscription_filter" "splunk_cloudwatch_trigger" {
depends_on = [aws_lambda_permission.allow_cloudwatch_for_splunk]
destination_arn = aws_lambda_function.splunk-logs.arn
filter_pattern = ""
log_group_name = aws_cloudwatch_log_group.splunk_cloudwatch_loggroup.name
name = "splunk_filter"
}
# splunk logs lambda function
resource "aws_lambda_function" "splunk-logs" {
filename = var.splunk_filename
function_name = var.splunk_function
source_code_hash = filebase64sha256(var.splunk_filename)
role = module.lambda_role.arn
handler = "${var.splunk_handler}.handler"
runtime = "python3.9"
timeout = 200
description = "audit logs"
depends_on = [module.lambda_role, module.security_group]
}
how can i pass all the logs from first lambda to newly created log group ? any help ?