package com.ruoyi.web.controller.monitor;

import com.ruoyi.common.core.domain.AjaxResult;
import com.ruoyi.common.utils.StringUtils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.RedisServerCommands;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.*;

/**
 * 缓存监控
 *
 * @author Lion Li
 */
@Api(value = "缓存监控", tags = {"缓存监控管理"})
@RequiredArgsConstructor(onConstructor_ = @Autowired)
@RestController
@RequestMapping("/monitor/cache")
public class CacheController {

    private final RedisTemplate<String, String> redisTemplate;

    @ApiOperation("获取缓存监控详细信息")
    @PreAuthorize("@ss.hasPermi('monitor:cache:list')")
    @GetMapping()
    public AjaxResult<Map<String, Object>> getInfo() throws Exception {
        Properties info = (Properties) redisTemplate.execute((RedisCallback<Object>) RedisServerCommands::info);
        Properties commandStats = (Properties) redisTemplate.execute((RedisCallback<Object>) connection -> connection.info("commandstats"));
        Object dbSize = redisTemplate.execute((RedisCallback<Object>) RedisServerCommands::dbSize);

        Map<String, Object> result = new HashMap<>(3);
        result.put("info", info);
        result.put("dbSize", dbSize);

        List<Map<String, String>> pieList = new ArrayList<>();
        if (commandStats != null) {
            commandStats.stringPropertyNames().forEach(key -> {
                Map<String, String> data = new HashMap<>(2);
                String property = commandStats.getProperty(key);
                data.put("name", StringUtils.removeStart(key, "cmdstat_"));
                data.put("value", StringUtils.substringBetween(property, "calls=", ",usec"));
                pieList.add(data);
            });
        }
        result.put("commandStats", pieList);
        return AjaxResult.success(result);
    }
}