MapCacheService.cs
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using Rcs.Application.Services;
using Rcs.Domain.Repositories;
using StackExchange.Redis;
namespace Rcs.Infrastructure.Services
{
/// <summary>
/// 地图缓存服务实现 - 负责地图数据的Redis缓存操作
/// @author zzy
/// </summary>
public class MapCacheService : IMapCacheService
{
private readonly IConnectionMultiplexer _redis;
private readonly IServiceProvider _serviceProvider;
private readonly ILogger<MapCacheService> _logger;
private const string MapKeyPrefix = "rcs:map:";
private const string MapListKey = "rcs:maps";
private const string NodeIndexSuffix = ":nodes";
public MapCacheService(
IConnectionMultiplexer redis,
IServiceProvider serviceProvider,
ILogger<MapCacheService> logger)
{
_redis = redis;
_serviceProvider = serviceProvider;
_logger = logger;
}
/// <summary>
/// 从Redis获取地图完整数据
/// @author zzy
/// </summary>
public async Task<MapCacheData?> GetMapAsync(Guid mapId)
{
var db = _redis.GetDatabase();
var key = $"{MapKeyPrefix}{mapId}";
var json = await db.StringGetAsync(key);
if (json.IsNullOrEmpty)
{
// 缓存未命中，从数据库加载
await UpdateMapCacheAsync(mapId);
json = await db.StringGetAsync(key);
if (json.IsNullOrEmpty) return null;
}
return JsonSerializer.Deserialize<MapCacheData>(json!);
}
/// <summary>
/// 获取所有地图ID列表
/// @author zzy
/// </summary>
public async Task<IEnumerable<Guid>> GetAllMapIdsAsync()
{
var db = _redis.GetDatabase();
var json = await db.StringGetAsync(MapListKey);
if (json.IsNullOrEmpty) return Enumerable.Empty<Guid>();
var ids = JsonSerializer.Deserialize<List<string>>(json!);
return ids?.Select(Guid.Parse) ?? Enumerable.Empty<Guid>();
}
/// <summary>
/// 通过节点编码快速查找节点ID
/// @author zzy
/// </summary>
public async Task<Guid?> GetNodeIdByCodeAsync(Guid mapId, string nodeCode)
{
var db = _redis.GetDatabase();
var key = $"{MapKeyPrefix}{mapId}{NodeIndexSuffix}";
var nodeIdStr = await db.HashGetAsync(key, nodeCode);
if (nodeIdStr.IsNullOrEmpty) return null;
return Guid.TryParse(nodeIdStr, out var nodeId) ? nodeId : null;
}
/// <summary>
/// 更新单个地图缓存
/// @author zzy
/// </summary>
public async Task UpdateMapCacheAsync(Guid mapId)
{
using var scope = _serviceProvider.CreateScope();
var mapRepo = scope.ServiceProvider.GetRequiredService<IMapRepository>();
var db = _redis.GetDatabase();
var map = await mapRepo.GetWithFullDetailsAsync(mapId);
if (map == null) return;
var key = $"{MapKeyPrefix}{mapId}";
var cacheData = new MapCacheData
{
MapId = map.MapId,
MapCode = map.MapCode,
MapName = map.MapName,
MapType = (int)map.MapType,
Version = map.Version,
Active = map.Active,
Nodes = map.MapNodes.Select(n => new MapNodeCache
{
NodeId = n.NodeId,
NodeCode = n.NodeCode,
X = n.X,
Y = n.Y,
Theta = n.Theta,
Type = (int)n.Type,
Active = n.Active
}).ToList(),
Edges = map.MapEdges.Select(e => new MapEdgeCache
{
EdgeId = e.EdgeId,
EdgeCode = e.EdgeCode,
FromNode = e.FromNode,
ToNode = e.ToNode,
Length = e.Length,
Cost = e.Cost,
Active = e.Active
}).ToList(),
Resources = map.MapResources.Select(r => new MapResourceCache
{
ResourceId = r.ResourceId,
ResourceCode = r.ResourceCode,
Type = (int)r.Type,
Capacity = r.Capacity
}).ToList()
};
await db.StringSetAsync(key, JsonSerializer.Serialize(cacheData));
// 更新节点索引
var nodeIndexKey = $"{MapKeyPrefix}{mapId}{NodeIndexSuffix}";
var nodeEntries = map.MapNodes.Select(n => new HashEntry(n.NodeCode, n.NodeId.ToString())).ToArray();
if (nodeEntries.Length > 0)
{
await db.KeyDeleteAsync(nodeIndexKey);
await db.HashSetAsync(nodeIndexKey, nodeEntries);
}
_logger.LogDebug("[地图缓存] 已更新地图 {MapId} 缓存", mapId);
}
/// <summary>
/// 删除地图缓存
/// @author zzy
/// </summary>
public async Task RemoveMapCacheAsync(Guid mapId)
{
var db = _redis.GetDatabase();
var key = $"{MapKeyPrefix}{mapId}";
var nodeIndexKey = $"{MapKeyPrefix}{mapId}{NodeIndexSuffix}";
await db.KeyDeleteAsync(key);
await db.KeyDeleteAsync(nodeIndexKey);
// 更新地图列表
var mapIds = (await GetAllMapIdsAsync()).Where(id => id != mapId).Select(id => id.ToString()).ToList();
await db.StringSetAsync(MapListKey, JsonSerializer.Serialize(mapIds));
_logger.LogDebug("[地图缓存] 已删除地图 {MapId} 缓存", mapId);
}
}
}