Merge pull request #76 from ajschofield/development

pr: pull development into main

1 files changed, 109 insertions, 0 deletions

diff --git a/terraform/events.tf b/terraform/events.tf
new file mode 100644
index 0000000..53ae10a
--- /dev/null
+++ b/terraform/events.tf
@@ -0,0 +1,109 @@
+#################
+# Random String #
+#################
+
+resource "random_string" "eventbridge_suffix" {
+  length  = 8
+  special = false
+  upper   = false
+}
+
+resource "random_string" "s3_ingestion_suffix" {
+  length  = 8
+  special = false
+  upper   = false
+}
+
+resource "random_string" "s3_transform_suffix" {
+  length  = 8
+  special = false
+  upper   = false
+}
+
+#############################
+# EventBridge Configuration #
+#############################
+
+resource "aws_cloudwatch_event_rule" "lambda_trigger" {
+  name                = "lambda-scheduled-trigger"
+  description         = "Schedule to trigger the Lambda function"
+  schedule_expression = "rate(30 minutes)"
+}
+
+resource "aws_cloudwatch_event_target" "extract_lambda_cw_event" {
+  rule       = aws_cloudwatch_event_rule.lambda_trigger.name
+  target_id  = "TargetFunctionV1"
+  arn        = aws_lambda_function.extract_lambda.arn
+  depends_on = [aws_lambda_permission.allow_eventbridge]
+}
+
+resource "aws_lambda_permission" "allow_eventbridge" {
+  statement_id  = "AllowExecutionFromEventBridge${random_string.eventbridge_suffix.result}"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.extract_lambda.function_name
+  principal     = "events.amazonaws.com"
+  source_arn    = aws_cloudwatch_event_rule.lambda_trigger.arn
+
+  lifecycle {
+    create_before_destroy = true
+    replace_triggered_by  = [random_string.eventbridge_suffix]
+  }
+}
+
+########################################
+# S3 Extract Bucket Notification Setup #
+########################################
+
+resource "aws_lambda_permission" "allow_s3_ingestion" {
+  statement_id  = "AllowS3InvokeLambdaTransform${random_string.s3_ingestion_suffix.result}"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.transform_lambda.function_name
+  principal     = "s3.amazonaws.com"
+  source_arn    = aws_s3_bucket.extract_bucket.arn
+
+  lifecycle {
+    create_before_destroy = true
+    replace_triggered_by  = [random_string.s3_ingestion_suffix]
+  }
+}
+
+
+resource "aws_s3_bucket_notification" "extract_bucket_notification" {
+  bucket = aws_s3_bucket.extract_bucket.id
+
+  lambda_function {
+    events              = ["s3:ObjectCreated:*"]
+    lambda_function_arn = aws_lambda_function.transform_lambda.arn
+  }
+
+  depends_on = [aws_lambda_permission.allow_s3_ingestion]
+}
+
+##########################################
+# S3 Transform Bucket Notification Setup #
+##########################################
+
+resource "aws_lambda_permission" "allow_s3_transform_bucket" {
+  statement_id  = "AllowS3InvokeLambdaTransform${random_string.s3_transform_suffix.result}"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.transform_lambda.function_name
+  principal     = "s3.amazonaws.com"
+  source_arn    = aws_s3_bucket.transform_bucket.arn
+
+  lifecycle {
+    create_before_destroy = true
+    replace_triggered_by  = [random_string.s3_transform_suffix]
+  }
+}
+
+
+resource "aws_s3_bucket_notification" "transform_bucket_notification" {
+  bucket = aws_s3_bucket.transform_bucket.id
+
+  lambda_function {
+    events              = ["s3:ObjectCreated:*"]
+    lambda_function_arn = aws_lambda_function.transform_lambda.arn
+  }
+
+  depends_on = [aws_lambda_permission.allow_s3_transform_bucket]
+}