28e57bb1
 tangwang
日志体系优化
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#!/bin/bash
#
# Route incoming log stream into per-day files.
#
# Usage:
# command 2>&1 | ./scripts/daily_log_router.sh <service> <log_dir> [retention_days]
#
set -euo pipefail
if [ "$#" -lt 2 ]; then
echo "Usage: $0 <service> <log_dir> [retention_days]" >&2
exit 1
fi
SERVICE_NAME="$1"
LOG_DIR="$2"
RETENTION_DAYS="${3:-30}"
mkdir -p "${LOG_DIR}"
awk -v dir="${LOG_DIR}" -v service="${SERVICE_NAME}" -v retention_days="${RETENTION_DAYS}" '
function rotate_file(day) {
return sprintf("%s/%s-%s.log", dir, service, day)
}
function update_symlink(day) {
cmd = sprintf("ln -sfn \"%s-%s.log\" \"%s/%s.log\"", service, day, dir, service)
system(cmd)
}
function cleanup_old_logs() {
cmd = sprintf("find \"%s\" -maxdepth 1 -type f -name \"%s-*.log\" -mtime +%d -delete >/dev/null 2>&1", dir, service, retention_days)
system(cmd)
}
{
day = strftime("%Y-%m-%d")
target = rotate_file(day)
if (target != current_target) {
update_symlink(day)
cleanup_old_logs()
current_target = target
}
print >> current_target
fflush(current_target)
}
END {
if (current_target != "") {
close(current_target)
}
}
'
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