Building SwiftDeploy: A Self-Writing Infrastructure Tool with OPA Policy Enforcement and Prometheus Observability

Building SwiftDeploy: A Self-Writing Infrastructure Tool with OPA Policy Enforcement and Prometheus Observability Introduction What if your deployment tool could refuse to deploy when your disk is full? What if it could block a canary promotion when error rates spike — automatically, based on policy — without a single hardcoded if statement in the CLI? That's exactly what I built for Stage 4b of the HNG14 DevOps track. In this post I'll walk through the full journey: from a manifest-driven deplo