Add edge tag cleanup script

release/cleanup-edge-tags.sh

@@ -0,0 +1,95 @@
+#!/bin/bash
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+. "$SCRIPT_DIR/release.conf"
+
+KEEP_EDGE_COMMIT_TAGS="${KEEP_EDGE_COMMIT_TAGS:-100}"
+
+if ! [[ "$KEEP_EDGE_COMMIT_TAGS" =~ ^[0-9]+$ ]] || [ "$KEEP_EDGE_COMMIT_TAGS" -lt 1 ]; then
+    echo "KEEP_EDGE_COMMIT_TAGS must be a positive integer." >&2
+    exit 1
+fi
+
+if [ -z "${REGISTRY_USERNAME:-}" ] || [ -z "${REGISTRY_PASSWORD:-}" ]; then
+    echo "REGISTRY_USERNAME and REGISTRY_PASSWORD are required." >&2
+    exit 1
+fi
+
+if ! command -v curl >/dev/null 2>&1 || ! command -v jq >/dev/null 2>&1; then
+    echo "curl and jq are required." >&2
+    exit 1
+fi
+
+if [[ "$EDGE_IMAGE_NAME" != */* ]]; then
+    echo "EDGE_IMAGE_NAME must be in namespace/repository format." >&2
+    exit 1
+fi
+
+NAMESPACE="${EDGE_IMAGE_NAME%%/*}"
+REPOSITORY="${EDGE_IMAGE_NAME#*/}"
+API_BASE="https://hub.docker.com/v2/namespaces/$NAMESPACE/repositories/$REPOSITORY"
+
+AUTH_RESPONSE="$(
+    jq -nc '{identifier: env.REGISTRY_USERNAME, secret: env.REGISTRY_PASSWORD}' |
+        curl --fail-with-body --silent --show-error \
+            --request POST \
+            --header 'Content-Type: application/json' \
+            --data-binary @- \
+            'https://hub.docker.com/v2/auth/token'
+)"
+HUB_TOKEN="$(jq -r '.access_token // empty' <<<"$AUTH_RESPONSE")"
+
+if [ -z "$HUB_TOKEN" ]; then
+    echo "Docker Hub authentication did not return an access token." >&2
+    exit 1
+fi
+
+TAG_FILE="$(mktemp)"
+trap 'rm -f "$TAG_FILE"' EXIT
+
+NEXT_URL="$API_BASE/tags?page_size=100&page=1"
+while [ -n "$NEXT_URL" ]; do
+    TAG_RESPONSE="$(
+        curl --fail-with-body --silent --show-error \
+            --header "Authorization: Bearer $HUB_TOKEN" \
+            "$NEXT_URL"
+    )"
+
+    jq -c '
+        .results[]
+        | select((.name // "") | test("^[0-9a-fA-F]{40}$"))
+        | {name, last_updated}
+    ' <<<"$TAG_RESPONSE" >>"$TAG_FILE"
+
+    NEXT_URL="$(jq -r '.next // empty' <<<"$TAG_RESPONSE")"
+done
+
+COMMIT_TAG_COUNT="$(wc -l <"$TAG_FILE" | tr -d ' ')"
+if [ "$COMMIT_TAG_COUNT" -le "$KEEP_EDGE_COMMIT_TAGS" ]; then
+    echo "Found $COMMIT_TAG_COUNT edge commit tags; nothing to delete."
+    exit 0
+fi
+
+TAGS_TO_DELETE="$(
+    jq -s -r --argjson keep "$KEEP_EDGE_COMMIT_TAGS" '
+        sort_by([.last_updated // "", .name])
+        | reverse
+        | .[$keep:][]
+        | .name
+    ' "$TAG_FILE"
+)"
+
+DELETE_COUNT=$((COMMIT_TAG_COUNT - KEEP_EDGE_COMMIT_TAGS))
+echo "Keeping the newest $KEEP_EDGE_COMMIT_TAGS of $COMMIT_TAG_COUNT edge commit tags; deleting $DELETE_COUNT."
+
+while IFS= read -r TAG; do
+    [ -n "$TAG" ] || continue
+    echo "Deleting old edge commit tag: $TAG"
+    curl --fail-with-body --silent --show-error \
+        --request DELETE \
+        --header "Authorization: Bearer $HUB_TOKEN" \
+        "$API_BASE/tags/$TAG" \
+        >/dev/null
+done <<<"$TAGS_TO_DELETE"