bea1903ac9
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Co-authored-by: Cursor <cursoragent@cursor.com>
69 lines
1.6 KiB
Bash
Executable File
69 lines
1.6 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Prune old rows from logs/storage-growth/history.csv to cap file size.
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# Keeps header and either last KEEP_DAYS (as proxy: days*200 rows) or last MAX_ROWS.
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# Usage: ./scripts/monitoring/prune-storage-history.sh [--days N] [--max-rows N] [--dry-run]
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set -euo pipefail
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "$SCRIPT_DIR/../.." && pwd)"
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LOG_DIR="${LOG_DIR:-$PROJECT_ROOT/logs/storage-growth}"
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HISTORY_CSV="${HISTORY_CSV:-$LOG_DIR/history.csv}"
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KEEP_DAYS="${KEEP_DAYS:-90}"
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MAX_ROWS="${MAX_ROWS:-0}"
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ROWS_PER_DAY=200
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DRY_RUN=0
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while [ $# -gt 0 ]; do
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case "$1" in
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--days)
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KEEP_DAYS="${2:-90}"
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shift 2
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;;
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--max-rows)
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MAX_ROWS="${2:-0}"
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shift 2
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;;
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--dry-run)
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DRY_RUN=1
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shift
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;;
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*)
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shift
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;;
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esac
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done
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if [ ! -f "$HISTORY_CSV" ]; then
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echo "File $HISTORY_CSV does not exist; nothing to prune."
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exit 0
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fi
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header=$(head -1 "$HISTORY_CSV")
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total_lines=$(wc -l < "$HISTORY_CSV")
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data_lines=$((total_lines - 1))
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if [ "$data_lines" -le 0 ]; then
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echo "No data rows in $HISTORY_CSV."
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exit 0
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fi
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if [ "$MAX_ROWS" -le 0 ]; then
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MAX_ROWS=$((KEEP_DAYS * ROWS_PER_DAY))
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fi
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if [ "$data_lines" -le "$MAX_ROWS" ]; then
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echo "Data rows ($data_lines) <= keep ($MAX_ROWS); no prune needed."
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exit 0
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fi
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remove=$((data_lines - MAX_ROWS))
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if [ "$DRY_RUN" -eq 1 ]; then
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echo "[dry-run] Would trim to last $MAX_ROWS rows (remove $remove rows)."
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exit 0
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fi
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{ echo "$header"; tail -n "$MAX_ROWS" "$HISTORY_CSV"; } > "${HISTORY_CSV}.$$"
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mv "${HISTORY_CSV}.$$" "$HISTORY_CSV"
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echo "Trimmed $HISTORY_CSV to last $MAX_ROWS data rows (removed $remove)."
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