fix: handle duplicate log events

[bryan-robitaille]

Summary | Résumé

Adds the ability to handle audit log events that have the same hash and sort key.

Duplicate events are recorded in the logs and a warning is raised in Slack.

Logic can be tested here: https://codesandbox.io/p/sandbox/serene-tereshkova-3i9onl

[github-actions]

⚠ Terrform update available

Terraform: 1.6.1 (using 1.4.2)
Terragrunt: 0.52.1 (using 0.46.3)

[github-actions]

Staging: app

✅   Terraform Init: success
✅   Terraform Validate: success
✅   Terraform Format: success
✅   Terraform Plan: success
✅   Conftest: success

Plan: 0 to add, 1 to change, 0 to destroy

Show summary

CHANGE	NAME
update	aws_lambda_function.audit_logs

Show plan

Resource actions are indicated with the following symbols:
  ~ update in-place

Terraform will perform the following actions:

  # aws_lambda_function.audit_logs will be updated in-place
  ~ resource "aws_lambda_function" "audit_logs" {
        id                             = "AuditLogs"
      ~ last_modified                  = "2023-10-11T16:13:48.000+0000" -> (known after apply)
      ~ source_code_hash               = "syjjAQLD01eCL0P9DX8802i6FjQZGPQHfIxf2rIFrTw=" -> "D+znb19Vjp8Q9nqFkVJze635ACkzsT7CtKnPs4GHyS4="
        tags                           = {
            "CostCentre" = "forms-platform-staging"
            "Terraform"  = "true"
        }
        # (18 unchanged attributes hidden)

        # (2 unchanged blocks hidden)
    }

Plan: 0 to add, 1 to change, 0 to destroy.

Warning: Argument is deprecated

  with aws_s3_bucket.reliability_file_storage,
  on s3.tf line 4, in resource "aws_s3_bucket" "reliability_file_storage":
   4: resource "aws_s3_bucket" "reliability_file_storage" {

Use the aws_s3_bucket_lifecycle_configuration resource instead

(and 17 more similar warnings elsewhere)

─────────────────────────────────────────────────────────────────────────────

Saved the plan to: plan.tfplan

To perform exactly these actions, run the following command to apply:
    terraform apply "plan.tfplan"
Releasing state lock. This may take a few moments...

Show Conftest results

WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.cron_2am_every_day"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.cron_3am_every_day"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.cron_4am_every_day"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_event_rule.cron_5am_every_business_day"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.archive_form_templates"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.archiver"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.audit_logs"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.dead_letter_queue_consumer"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.nagware"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.reliability"]
WARN - plan.json - main - Missing Common Tags: ["aws_cloudwatch_log_group.submission"]

28 tests, 17 passed, 11 warnings, 0 failures, 0 exceptions

[craigzour]

LGTM :)