infra/stacks/servarr/mam-farming/main.tf

variable "namespace" {
  type    = string
  default = "servarr"
}

locals {
  python_image = "docker.io/library/python:3.12-alpine"
  pip_prefix   = "pip install -q requests > /dev/null 2>&1; python3 /tmp/script.py"
  data_pvc     = "mam-farming-data-proxmox"

  # Dry-run window was satisfied by a one-shot test on 2026-04-19 that
  # produced 466 `never_started` candidates and 0 matches in any other
  # reason bucket — consistent with Phase B's expected 495 stuck torrents.
  # Enforcing from here on.
  janitor_dry_run = "0"
}

# ------------------------------- PVC -------------------------------
# Shared scratch volume for cookie + grabbed-ID dedup list. The existing
# in-cluster PVC (kubectl-applied 2026-04-14) is adopted via an `import {}`
# block declared in the root module (servarr/main.tf) — Terraform 1.5+
# rejects imports inside child modules.

resource "kubernetes_persistent_volume_claim" "mam_data" {
  wait_until_bound = false
  metadata {
    name      = local.data_pvc
    namespace = var.namespace
    annotations = {
      "resize.topolvm.io/threshold"     = "10%"
      "resize.topolvm.io/increase"      = "100%"
      "resize.topolvm.io/storage_limit" = "5Gi"
    }
  }
  spec {
    access_modes       = ["ReadWriteOnce"]
    storage_class_name = "proxmox-lvm"
    resources {
      requests = {
        storage = "1Gi"
      }
    }
  }
  lifecycle {
    # The autoresizer expands requests.storage up to storage_limit and
    # PVCs can't shrink. Without this, every TF apply tries to revert
    # to the spec value, K8s rejects the shrink, and the PVC ends up
    # in Terminating-but-in-use limbo.
    ignore_changes = [spec[0].resources[0].requests]
  }
}

# --------------------------- Grabber ---------------------------------
# Every 30 minutes: skip while ratio < 1.2 or class == Mouse; otherwise
# grab up to 5 small-but-popular freeleech torrents. Existing ConfigMap
# + CronJob are adopted via imports in the parent stack.

resource "kubernetes_config_map" "grabber_script" {
  metadata {
    name      = "mam-freeleech-grabber-script"
    namespace = var.namespace
  }
  data = {
    "script.py" = file("${path.module}/files/freeleech-grabber.py")
  }
}

resource "kubernetes_cron_job_v1" "grabber" {
  metadata {
    name      = "mam-freeleech-grabber"
    namespace = var.namespace
  }
  spec {
    schedule                      = "*/30 * * * *"
    concurrency_policy            = "Forbid"
    successful_jobs_history_limit = 3
    failed_jobs_history_limit     = 3
    job_template {
      metadata {}
      spec {
        backoff_limit              = 2
        ttl_seconds_after_finished = 300
        template {
          metadata {}
          spec {
            restart_policy = "Never"
            container {
              name    = "freeleech-grabber"
              image   = local.python_image
              command = ["/bin/sh", "-c", local.pip_prefix]
              env {
                name = "MAM_ID"
                value_from {
                  secret_key_ref {
                    name = "servarr-secrets"
                    key  = "mam_id"
                  }
                }
              }
              resources {
                requests = { memory = "64Mi", cpu = "10m" }
                limits   = { memory = "128Mi" }
              }
              volume_mount {
                name       = "script"
                mount_path = "/tmp/script.py"
                sub_path   = "script.py"
              }
              volume_mount {
                name       = "data"
                mount_path = "/data"
              }
            }
            volume {
              name = "script"
              config_map {
                name = kubernetes_config_map.grabber_script.metadata[0].name
              }
            }
            volume {
              name = "data"
              persistent_volume_claim {
                claim_name = kubernetes_persistent_volume_claim.mam_data.metadata[0].name
              }
            }
          }
        }
      }
    }
  }
  lifecycle {
    # KYVERNO_LIFECYCLE_V1: Kyverno admission webhook mutates dns_config with ndots=2
    ignore_changes = [spec[0].job_template[0].spec[0].template[0].spec[0].dns_config]
  }
}

# --------------------------- BP Spender ------------------------------
# Every 6 hours: compute the upload deficit against TARGET_RATIO and buy
# exactly what we need (+1 GiB margin), capped by BP reserve. Existing
# ConfigMap + CronJob are adopted via imports in the parent stack.

resource "kubernetes_config_map" "bp_spender_script" {
  metadata {
    name      = "mam-bp-spender-script"
    namespace = var.namespace
  }
  data = {
    "script.py" = file("${path.module}/files/bp-spender.py")
  }
}

resource "kubernetes_cron_job_v1" "bp_spender" {
  metadata {
    name      = "mam-bp-spender"
    namespace = var.namespace
  }
  spec {
    schedule                      = "0 */6 * * *"
    concurrency_policy            = "Forbid"
    successful_jobs_history_limit = 3
    failed_jobs_history_limit     = 3
    job_template {
      metadata {}
      spec {
        backoff_limit              = 2
        ttl_seconds_after_finished = 300
        template {
          metadata {}
          spec {
            restart_policy = "Never"
            container {
              name    = "bp-spender"
              image   = local.python_image
              command = ["/bin/sh", "-c", local.pip_prefix]
              env {
                name = "MAM_ID"
                value_from {
                  secret_key_ref {
                    name = "servarr-secrets"
                    key  = "mam_id"
                  }
                }
              }
              resources {
                requests = { memory = "64Mi", cpu = "10m" }
                limits   = { memory = "128Mi" }
              }
              volume_mount {
                name       = "script"
                mount_path = "/tmp/script.py"
                sub_path   = "script.py"
              }
              volume_mount {
                name       = "data"
                mount_path = "/data"
              }
            }
            volume {
              name = "script"
              config_map {
                name = kubernetes_config_map.bp_spender_script.metadata[0].name
              }
            }
            volume {
              name = "data"
              persistent_volume_claim {
                claim_name = kubernetes_persistent_volume_claim.mam_data.metadata[0].name
              }
            }
          }
        }
      }
    }
  }
  lifecycle {
    # KYVERNO_LIFECYCLE_V1: Kyverno admission webhook mutates dns_config with ndots=2
    ignore_changes = [spec[0].job_template[0].spec[0].template[0].spec[0].dns_config]
  }
}

# ----------------------------- Janitor -------------------------------
# New: every 15 minutes, independent of grabber ratio guard. Deletes
# stuck/unregistered/redundant torrents in category=mam-farming while
# preserving torrents inside the 72h H&R window.

resource "kubernetes_config_map" "janitor_script" {
  metadata {
    name      = "mam-farming-janitor-script"
    namespace = var.namespace
  }
  data = {
    "script.py" = file("${path.module}/files/mam-farming-janitor.py")
  }
}

resource "kubernetes_cron_job_v1" "janitor" {
  metadata {
    name      = "mam-farming-janitor"
    namespace = var.namespace
  }
  spec {
    schedule                      = "*/15 * * * *"
    concurrency_policy            = "Forbid"
    successful_jobs_history_limit = 3
    failed_jobs_history_limit     = 3
    job_template {
      metadata {}
      spec {
        backoff_limit              = 2
        ttl_seconds_after_finished = 300
        template {
          metadata {}
          spec {
            restart_policy = "Never"
            container {
              name    = "farming-janitor"
              image   = local.python_image
              command = ["/bin/sh", "-c", local.pip_prefix]
              env {
                name  = "DRY_RUN"
                value = local.janitor_dry_run
              }
              resources {
                requests = { memory = "64Mi", cpu = "10m" }
                limits   = { memory = "128Mi" }
              }
              volume_mount {
                name       = "script"
                mount_path = "/tmp/script.py"
                sub_path   = "script.py"
              }
            }
            volume {
              name = "script"
              config_map {
                name = kubernetes_config_map.janitor_script.metadata[0].name
              }
            }
          }
        }
      }
    }
  }
  lifecycle {
    # KYVERNO_LIFECYCLE_V1: Kyverno admission webhook mutates dns_config with ndots=2
    ignore_changes = [spec[0].job_template[0].spec[0].template[0].spec[0].dns_config]
  }
}