playbook(logs): add rotate script which can rotate service logs.

Signed-off-by: Wine93 <[email protected]>

Author: Wine93

playbook/logs/scripts/rotate.sh

@@ -0,0 +1,73 @@
+#!/usr/bin/env bash
+
+# Usage: bash rotate.sh /mnt/logs/curvefs/client 86400
+
+############################  GLOBAL VARIABLES
+g_log_dir="$1"
+g_color_yellow=$(printf '\033[33m')
+g_color_red=$(printf '\033[31m')
+g_color_normal=$(printf '\033[0m')
+
+############################  BASIC FUNCTIONS
+msg() {
+    printf '%b' "${1}" >&2
+}
+
+success() {
+    msg "${g_color_yellow}[✔]${g_color_normal} ${1}${2}"
+}
+
+die() {
+    msg "${g_color_red}[✘]${g_color_normal} ${1}${2}"
+    exit 1
+}
+
+############################ FUNCTIONS
+precheck() {
+    local log_dir="$1"
+    if [ ! -d "${log_dir}" ]; then
+        die "Log directory ${log_dir} does not exist.\n"
+    fi
+
+    if [ ! -w "${log_dir}" ]; then
+        die "Log directory ${log_dir} is not writable.\n"
+    fi
+}
+
+expired() {
+    local path="$1"
+    local timeout="$2"
+    local mtime=$(stat -c %Y "${path}")
+    local now=$(date +%s)
+    if (( now - mtime > timeout )); then
+        return 0
+    fi
+    return 1
+}
+
+delete() {
+    local path="$1"
+    rm "${path}"
+    success "Delete ${path}\n"
+}
+
+rotate() {
+    local log_dir="$1"
+    local timeout="$2"
+    for file in $(ls "${log_dir}" | grep -E '(access|curve-fuse|aws)(.+)(\.log)?'); do
+        local path="${log_dir}/${file}"
+        if expired "${path}" "${timeout}"; then
+            delete "${path}"
+        fi
+    done
+}
+
+main() {
+    local log_dir="$1"
+    local timeout="$2"  # seconds
+    precheck "${log_dir}"
+    rotate "${log_dir}" "${timeout}"
+}
+
+############################  MAIN()
+main "$@"