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samjage
115 lines
4.0 KiB
Bash
115 lines
4.0 KiB
Bash
#!/usr/bin/env bash
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# =============================================================
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# update-check.sh
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# Reads Watchtower's recent logs to find outdated images,
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# maps them to containers, and fetches GitHub release notes.
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#
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# Usage:
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# bash /opt/stacks/scripts/update-check.sh
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# =============================================================
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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source "$SCRIPT_DIR/image-sources.conf"
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RED='\033[0;31m'
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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CYAN='\033[0;36m'
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GRAY='\033[0;90m'
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BOLD='\033[1m'
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NC='\033[0m'
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SEP="${GRAY}$(printf '─%.0s' $(seq 1 60))${NC}"
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# ── Check Watchtower is running ───────────────────────────────
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if ! docker inspect watchtower &>/dev/null; then
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echo -e "${RED}✗ Watchtower is not running.${NC}"
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echo -e " Start it: cd /opt/stacks/watchtower && docker compose up -d"
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exit 1
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fi
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# ── Parse Watchtower logs for outdated images (last 36h) ─────
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echo -e "${BOLD}Checking Watchtower logs for updates...${NC}"
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echo ""
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OUTDATED_IMAGES=()
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while IFS= read -r line; do
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# Extract image name from: "Found new some/image:tag image (sha256:...)"
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img=$(echo "$line" | grep -oP '(?<=Found new )\S+(?= image)')
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[ -n "$img" ] && OUTDATED_IMAGES+=("$img")
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done < <(docker logs watchtower --since 36h 2>&1 | grep "Found new")
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if [ ${#OUTDATED_IMAGES[@]} -eq 0 ]; then
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echo -e "${GREEN}✓ All images are up to date${NC} ${GRAY}(per last Watchtower scan)${NC}"
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echo ""
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LAST=$(docker logs watchtower --since 72h 2>&1 | grep "Session done" | tail -1 | grep -oP '\d{4}-\d{2}-\d{2}T\d{2}:\d{2}')
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[ -n "$LAST" ] && echo -e "${GRAY} Last scan: ${LAST}${NC}"
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exit 0
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fi
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echo -e "${YELLOW}${BOLD}${#OUTDATED_IMAGES[@]} image update(s) available:${NC}"
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echo ""
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# ── For each outdated image: find container + fetch notes ─────
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gh_release_notes() {
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local repo=$1
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local result
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result=$(curl -sf "https://api.github.com/repos/${repo}/releases/latest" 2>/dev/null) || true
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if [ -n "$result" ]; then
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TAG=$(echo "$result" | python3 -c "import sys,json; d=json.load(sys.stdin); print(d.get('tag_name','?'))" 2>/dev/null)
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BODY=$(echo "$result" | python3 -c "
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import sys,json,re
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d=json.load(sys.stdin)
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body=d.get('body','No release notes available.')
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# Strip markdown links/badges, collapse whitespace
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body=re.sub(r'!\[.*?\]\(.*?\)','',body)
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body=re.sub(r'\[([^\]]+)\]\([^\)]+\)',r'\1',body)
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body=re.sub(r'<!--.*?-->','',body,flags=re.DOTALL)
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lines=[l.strip() for l in body.split('\n') if l.strip()]
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print('\n'.join(lines[:6]))
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" 2>/dev/null || echo "No release notes available.")
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echo "$TAG|$BODY"
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fi
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}
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for image in "${OUTDATED_IMAGES[@]}"; do
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# Find container(s) using this image
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CONTAINERS=$(docker ps -a --format '{{.Names}}|{{.Image}}' | awk -F'|' -v img="$image" '$2==img {print $1}' | tr '\n' ' ')
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[ -z "$CONTAINERS" ] && CONTAINERS="${GRAY}(no running containers)${NC}"
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echo -e "$SEP"
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echo -e " ${CYAN}${BOLD}${image}${NC}"
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echo -e " ${GRAY}containers:${NC} ${CONTAINERS}"
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# Strip tag for image name lookup
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base_image=$(echo "$image" | sed 's/:.*//')
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if [ -n "${IMAGE_REPOS[$base_image]+_}" ]; then
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REPO="${IMAGE_REPOS[$base_image]}"
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RELEASE=$(gh_release_notes "$REPO")
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if [ -n "$RELEASE" ]; then
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TAG=$(echo "$RELEASE" | cut -d'|' -f1)
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NOTES=$(echo "$RELEASE" | cut -d'|' -f2-)
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echo -e " ${GRAY}latest tag:${NC} ${GREEN}${TAG}${NC}"
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echo -e " ${GRAY}notes:${NC}"
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while IFS= read -r line; do
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echo -e " ${GRAY}${line}${NC}"
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done <<< "$NOTES"
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echo -e " ${GRAY}full notes:${NC} https://github.com/${REPO}/releases/latest"
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else
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echo -e " ${GRAY}→ https://hub.docker.com/r/${base_image}/tags${NC}"
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fi
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else
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echo -e " ${GRAY}no GitHub mapping — add to scripts/image-sources.conf${NC}"
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echo -e " ${GRAY}→ https://hub.docker.com/r/${base_image}/tags${NC}"
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fi
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echo ""
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done
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echo -e "$SEP"
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echo ""
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echo -e " Ready to update? Run: ${CYAN}bash /opt/stacks/scripts/do-update.sh${NC}"
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echo ""
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