add isolated live development deployments

2026-07-21 20:58:12 +00:00
parent 12711bc3fa
commit 872529b3d9
16 changed files with 322 additions and 8 deletions
--- a/dev/start.sh
+++ b/dev/start.sh
@@ -0,0 +1,124 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)
+REPO_ROOT=$(cd -- "$SCRIPT_DIR/.." && pwd)
+
+validate_instance() {
+  local instance=$1
+
+  if [[ ${#instance} -gt 42 || ! $instance =~ ^[a-z0-9]([a-z0-9-]*[a-z0-9])?$ ]]; then
+    echo "instance must be 1-42 lowercase letters, digits, or internal hyphens: $instance" >&2
+    exit 2
+  fi
+}
+
+sync_tree() {
+  local source_dir=$1
+  local destination=$2
+
+  mkdir -p -- "$destination"
+  find "$destination" -mindepth 1 -maxdepth 1 -exec rm -rf -- {} +
+  cp -a -- "$source_dir/." "$destination/"
+}
+
+source_signature() {
+  local source_dir=$1
+
+  find "$source_dir" -printf '%P\0%y\0%s\0%T@\0%l\0' | sort -z | sha256sum
+}
+
+is_sync_process() {
+  local pid=$1
+  local instance=$2
+  local command
+
+  [[ $pid =~ ^[0-9]+$ && -r /proc/$pid/cmdline ]] || return 1
+  command=$(tr '\0' ' ' <"/proc/$pid/cmdline")
+  [[ $command == *"start.sh __sync $instance "* ]]
+}
+
+if [[ ${1:-} == "__sync" ]]; then
+  instance=${2:?missing instance}
+  source_dir=${3:?missing source directory}
+  destination=${4:?missing destination}
+  validate_instance "$instance"
+
+  previous_signature=$(source_signature "$source_dir")
+  while true; do
+    sleep 1
+    current_signature=$(source_signature "$source_dir")
+    if [[ $current_signature != "$previous_signature" ]]; then
+      sync_tree "$source_dir" "$destination"
+      previous_signature=$current_signature
+    fi
+  done
+fi
+
+default_instance=$(basename -- "$REPO_ROOT" | tr '[:upper:]_' '[:lower:]-')
+instance=${1:-$default_instance}
+validate_instance "$instance"
+
+namespace=${DEV_NAMESPACE:-vibes}
+pvc=${DEV_PVC:-control-vibes-control-data}
+shared_root=${DEV_SHARED_ROOT:-/data/live}
+pvc_subpath_root=${DEV_PVC_SUBPATH_ROOT:-live}
+domain=${DEV_DOMAIN:-control.k.mancave.link}
+host=${2:-$instance.$domain}
+release="hello-dev-$instance"
+source_dir="$REPO_ROOT/src"
+destination="$shared_root/$instance"
+state_dir="$shared_root/.hello-dev-state"
+pid_file="$state_dir/$instance.pid"
+log_file="$state_dir/$instance.log"
+
+if [[ ! -d $source_dir ]]; then
+  echo "source directory does not exist: $source_dir" >&2
+  exit 1
+fi
+
+if [[ $shared_root != /* || $shared_root == / ]]; then
+  echo "DEV_SHARED_ROOT must be an absolute directory below /: $shared_root" >&2
+  exit 2
+fi
+
+if [[ ! $host =~ ^[a-z0-9]([a-z0-9.-]*[a-z0-9])?$ ]]; then
+  echo "invalid hostname: $host" >&2
+  exit 2
+fi
+
+mkdir -p -- "$state_dir"
+
+if [[ -f $pid_file ]]; then
+  old_pid=$(<"$pid_file")
+  if is_sync_process "$old_pid" "$instance"; then
+    kill "$old_pid"
+    wait "$old_pid" 2>/dev/null || true
+  fi
+  rm -f -- "$pid_file"
+fi
+
+sync_tree "$source_dir" "$destination"
+nohup "$SCRIPT_DIR/start.sh" __sync "$instance" "$source_dir" "$destination" \
+  >"$log_file" 2>&1 &
+sync_pid=$!
+printf '%s\n' "$sync_pid" >"$pid_file"
+
+cleanup_failed_start() {
+  kill "$sync_pid" 2>/dev/null || true
+  rm -f -- "$pid_file"
+}
+trap cleanup_failed_start ERR
+
+helm template "$release" "$SCRIPT_DIR/helm" \
+  --namespace "$namespace" \
+  --set-string "instance=$instance" \
+  --set-string "ingress.host=$host" \
+  --set-string "sharedVolume.claimName=$pvc" \
+  --set-string "sharedVolume.subPath=$pvc_subpath_root/$instance" \
+  | kubectl apply --namespace "$namespace" -f -
+
+kubectl rollout status "deployment/$release" --namespace "$namespace" --timeout=120s
+trap - ERR
+
+echo "Development instance '$instance' is live at http://$host"