infra: rb pexels lambda

apps/railgunbreaker/usw2dev/iam.tf

@@ -72,25 +72,13 @@ resource "aws_iam_policy" "rb_gha" {
         ]
       },
       {
-        Sid    = "AllowECRGetToken"
+        Sid    = "AllowInvokeLambda"
         Effect = "Allow"
         Action = [
-          "ecr:GetAuthorizationToken"
-        ],
-        Resource = ["*"]
-      },
-      # {
-      #   Sid    = "AllowECRPush"
-      #   Effect = "Allow"
-      #   Action = [
-      #     "ecr:BatchCheckLayerAvailability",
-      #     "ecr:CompleteLayerUpload",
-      #     "ecr:InitiateLayerUpload",
-      #     "ecr:PutImage",
-      #     "ecr:UploadLayerPart"
-      #   ]
-      #   Resource = [aws_ecr_repository.lambda_container_repo.arn]
-      # }
+          "lambda:InvokeFunction"
+        ]
+        Resource = [aws_lambda_function.pexels_image_scraper.arn]
+      }
     ]
   })
 

apps/railgunbreaker/usw2dev/lambda.tf

@@ -0,0 +1,38 @@
+resource "aws_lambda_function" "pexels_image_scraper" {
+  function_name = "${var.project_name}-pexels-image-scraper"
+  role          = aws_iam_role.pexels_image_scraper_lambda_exec.arn
+  package_type  = "Image"
+  image_uri     = "${data.terraform_remote_state.portfolio_website.outputs.lambda_ecr_repository_url}:latest"
+
+  memory_size = 1024
+  timeout     = 60
+
+  architectures = ["x86_64"]
+
+  environment {
+    variables = {
+      PEXELS_FEATURED_UPLOADS_URL = var.pexels_url
+    }
+  }
+}
+
+# EventBridge rule to trigger lambda every 3 days
+resource "aws_cloudwatch_event_rule" "pexels_scraper_periodic" {
+  name                = "${var.project_name}-pexels-scraper-periodic-trigger"
+  description         = "Trigger Pexels image scraper lambda every 3 days"
+  schedule_expression = "rate(3 days)"
+}
+
+resource "aws_cloudwatch_event_target" "pexels_scraper_lambda" {
+  rule      = aws_cloudwatch_event_rule.pexels_scraper_periodic.name
+  target_id = "PexelsScraperLambda"
+  arn       = aws_lambda_function.pexels_image_scraper.arn
+}
+
+resource "aws_lambda_permission" "allow_eventbridge" {
+  statement_id  = "AllowExecutionFromEventBridge"
+  action        = "lambda:InvokeFunction"
+  function_name = aws_lambda_function.pexels_image_scraper.function_name
+  principal     = "events.amazonaws.com"
+  source_arn    = aws_cloudwatch_event_rule.pexels_scraper_periodic.arn
+}

apps/railgunbreaker/usw2dev/outputs.tf

@@ -43,16 +43,6 @@ output "acm_certificate_subject_alternative_names" {
   value       = aws_acm_certificate.rb_website.subject_alternative_names
 }
 
-# output "lambda_ecr_repository_url" {
-#   description = "URL of the ECR repository for the lambda container image"
-#   value       = aws_ecr_repository.lambda_container_repo.repository_url
-# }
-
-# output "lambda_ecr_repository_arn" {
-#   description = "ARN of the ECR repository for the lambda container image"
-#   value       = aws_ecr_repository.lambda_container_repo.arn
-# }
-
 # output "event_bridge_rule_name" {
 #   description = "Name of the EventBridge rule that triggers the Pexels image scraper lambda"
 #   value       = aws_cloudwatch_event_rule.pexels_scraper_periodic.name

apps/railgunbreaker/usw2dev/remote_states.tf

@@ -19,3 +19,14 @@ data "terraform_remote_state" "dns" {
     }
   }
 }
+
+data "terraform_remote_state" "portfolio_website" {
+  backend = "remote"
+
+  config = {
+    organization = "perry-zhu-aws"
+    workspaces = {
+      name = "portfolio-website-usw2dev"
+    }
+  }
+}

apps/railgunbreaker/usw2dev/terraform.auto.tfvars

@@ -1,2 +1,3 @@
 env_name    = "usw2dev"
 github_repo = "RailgunBreaker/RailgunBreaker.github.io"
+pexels_url  = "https://www.pexels.com/@railgunbreaker/featured-uploads/"

apps/railgunbreaker/usw2dev/variables.tf

@@ -36,4 +36,14 @@ variable "subdomain" {
   description = "The subdomain to use for the website"
   type        = string
   default     = "railgunbreaker.stage"
-}
+}
+
+variable "project_name" {
+  description = "The name of the project"
+  type        = string
+  default     = "rb"
+}
+
+variable "pexels_url" {
+  type = string
+}