initial 2.0.0-a4 commit

src/ZM/Store/LightCacheInside.php

@@ -0,0 +1,55 @@
+<?php
+
+
+namespace ZM\Store;
+
+
+use Exception;
+use Swoole\Table;
+
+class LightCacheInside
+{
+    /** @var Table[]|null */
+    private static $kv_table = [];
+
+    public static $last_error = '';
+
+    public static function init() {
+        self::$kv_table["wait_api"] = new Table(2, 0);
+        self::$kv_table["wait_api"]->column("value", Table::TYPE_STRING, 65536);
+        $result = self::$kv_table["wait_api"]->create();
+        if ($result === false) {
+            self::$last_error = '系统内存不足，申请失败';
+            return $result;
+        }
+        return $result;
+    }
+
+    public static function get(string $table, string $key) {
+        if (!isset(self::$kv_table[$table])) throw new Exception("not initialized LightCache");
+        $r = self::$kv_table[$table]->get($key);
+        return $r === false ? null : json_decode($r["value"], true);
+    }
+
+    /**
+     * @param string $table
+     * @param string $key
+     * @param string|array|int $value
+     * @return mixed
+     * @throws Exception
+     */
+    public static function set(string $table, string $key, $value) {
+        if (self::$kv_table === null) throw new Exception("not initialized LightCache");
+        try {
+            return self::$kv_table[$table]->set($key, [
+                "value" => json_encode($value, 256)
+            ]);
+        } catch (Exception $e) {
+            return false;
+        }
+    }
+
+    public static function unset(string $table, string $key) {
+        return self::$kv_table[$table]->del($key);
+    }
+}