add
This commit is contained in:
li
@@ -0,0 +1,201 @@
|
||||
<?php
|
||||
|
||||
namespace app\services\chat;
|
||||
|
||||
use app\models\chat\ChatMessage;
|
||||
use app\models\chat\ChatSession;
|
||||
use app\utils\Snowflake;
|
||||
use think\facade\Cache;
|
||||
|
||||
/**
|
||||
* 消息服务
|
||||
* Class MessageService
|
||||
* @package app\services\chat
|
||||
*/
|
||||
class MessageService
|
||||
{
|
||||
// 约束参数 (specs.md CC-05~CC-09)
|
||||
private const MAX_RETRY = 3;
|
||||
private const RETRY_DELAYS = [1000, 2000, 4000]; // ms
|
||||
private const MAX_CONTENT_LENGTH = 500;
|
||||
private const RECONNECT_FETCH_LIMIT = 50;
|
||||
|
||||
/**
|
||||
* 创建消息
|
||||
* @param array $data [session_id, sender_type, sender_id, msg_type, content]
|
||||
* @return array 消息数据
|
||||
*/
|
||||
public function createMessage(array $data): array
|
||||
{
|
||||
// 生成雪花ID
|
||||
$msgId = Snowflake::getInstance()->nextId();
|
||||
|
||||
// 内容长度限制
|
||||
$content = $data['content'] ?? '';
|
||||
if (mb_strlen($content) > self::MAX_CONTENT_LENGTH) {
|
||||
$content = mb_substr($content, 0, self::MAX_CONTENT_LENGTH);
|
||||
}
|
||||
|
||||
$message = [
|
||||
'msg_id' => $msgId,
|
||||
'session_id' => $data['session_id'],
|
||||
'sender_type' => $data['sender_type'],
|
||||
'sender_id' => $data['sender_id'],
|
||||
'msg_type' => $data['msg_type'] ?? ChatMessage::MSG_TYPE_TEXT,
|
||||
'content' => $content,
|
||||
'status' => ChatMessage::STATUS_PENDING,
|
||||
'retry_count' => 0,
|
||||
'create_time' => time(),
|
||||
];
|
||||
|
||||
// 幂等性检查
|
||||
if (isset($data['client_msg_id']) && ChatMessage::existsByMsgId($data['client_msg_id'])) {
|
||||
return ChatMessage::where('msg_id', $data['client_msg_id'])->find()->toArray();
|
||||
}
|
||||
|
||||
// 入库
|
||||
$id = ChatMessage::insertGetId($message);
|
||||
$message['id'] = $id;
|
||||
|
||||
// 更新会话最后消息
|
||||
ChatSession::where('id', $data['session_id'])->update([
|
||||
'last_msg_id' => $msgId,
|
||||
'last_msg_time' => time(),
|
||||
'update_time' => time(),
|
||||
]);
|
||||
|
||||
return $message;
|
||||
}
|
||||
|
||||
/**
|
||||
* 推送消息到目标连接
|
||||
* @param int $msgId 消息ID
|
||||
* @param int $targetFd 目标连接FD
|
||||
* @param array $payload 消息内容
|
||||
* @return bool
|
||||
*/
|
||||
public function pushMessage(int $msgId, int $targetFd, array $payload): bool
|
||||
{
|
||||
$server = app('swoole.server');
|
||||
|
||||
for ($retry = 0; $retry <= self::MAX_RETRY; $retry++) {
|
||||
// 检查目标连接是否有效
|
||||
if (!$server->isEstablished($targetFd)) {
|
||||
$this->updateMessageStatus($msgId, ChatMessage::STATUS_PENDING);
|
||||
return false;
|
||||
}
|
||||
|
||||
// 尝试推送
|
||||
$result = $server->push($targetFd, json_encode($payload));
|
||||
|
||||
if ($result) {
|
||||
$this->updateMessageStatus($msgId, ChatMessage::STATUS_SENT);
|
||||
return true;
|
||||
}
|
||||
|
||||
// 推送失败，记录重试次数
|
||||
$this->incrementRetryCount($msgId);
|
||||
|
||||
if ($retry < self::MAX_RETRY) {
|
||||
// 指数退避等待
|
||||
usleep(self::RETRY_DELAYS[$retry] * 1000);
|
||||
}
|
||||
}
|
||||
|
||||
// 超过最大重试次数，标记为failed
|
||||
$this->updateMessageStatus($msgId, ChatMessage::STATUS_FAILED);
|
||||
return false;
|
||||
}
|
||||
|
||||
/**
|
||||
* 更新消息状态
|
||||
*/
|
||||
public function updateMessageStatus(int $msgId, int $status): void
|
||||
{
|
||||
$update = ['status' => $status];
|
||||
|
||||
if ($status === ChatMessage::STATUS_DELIVERED) {
|
||||
$update['delivered_time'] = time();
|
||||
} elseif ($status === ChatMessage::STATUS_READ) {
|
||||
$update['read_time'] = time();
|
||||
}
|
||||
|
||||
ChatMessage::where('msg_id', $msgId)->update($update);
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取会话未读消息 (重连后拉取)
|
||||
*/
|
||||
public function getUnreadMessages(int $sessionId, int $receiverType, int $limit = null): array
|
||||
{
|
||||
$limit = $limit ?? self::RECONNECT_FETCH_LIMIT;
|
||||
return ChatMessage::getUnreadBySessionId($sessionId, $receiverType, $limit);
|
||||
}
|
||||
|
||||
/**
|
||||
* 批量标记消息为已读
|
||||
*/
|
||||
public function markMessagesAsRead(array $msgIds): void
|
||||
{
|
||||
if (empty($msgIds)) {
|
||||
return;
|
||||
}
|
||||
|
||||
ChatMessage::whereIn('msg_id', $msgIds)
|
||||
->where('status', '<', ChatMessage::STATUS_READ)
|
||||
->update([
|
||||
'status' => ChatMessage::STATUS_READ,
|
||||
'read_time' => time(),
|
||||
]);
|
||||
}
|
||||
|
||||
/**
|
||||
* 标记消息为已送达
|
||||
*/
|
||||
public function markMessageDelivered(int $msgId): void
|
||||
{
|
||||
ChatMessage::where('msg_id', $msgId)
|
||||
->where('status', '<', ChatMessage::STATUS_DELIVERED)
|
||||
->update([
|
||||
'status' => ChatMessage::STATUS_DELIVERED,
|
||||
'delivered_time' => time(),
|
||||
]);
|
||||
}
|
||||
|
||||
/**
|
||||
* 获取会话消息历史
|
||||
*/
|
||||
public function getMessageHistory(int $sessionId, int $limit = 50, int $lastId = 0): array
|
||||
{
|
||||
return ChatMessage::getBySessionId($sessionId, $limit, $lastId);
|
||||
}
|
||||
|
||||
/**
|
||||
* 增加重试次数
|
||||
*/
|
||||
private function incrementRetryCount(int $msgId): void
|
||||
{
|
||||
ChatMessage::where('msg_id', $msgId)->inc('retry_count')->update();
|
||||
}
|
||||
|
||||
/**
|
||||
* 验证消息内容
|
||||
*/
|
||||
public function validateContent(string $content, int $msgType): array
|
||||
{
|
||||
if ($msgType === ChatMessage::MSG_TYPE_TEXT) {
|
||||
if (empty(trim($content))) {
|
||||
return ['valid' => false, 'error' => '消息内容不能为空'];
|
||||
}
|
||||
if (mb_strlen($content) > self::MAX_CONTENT_LENGTH) {
|
||||
return ['valid' => false, 'error' => '消息内容超过' . self::MAX_CONTENT_LENGTH . '字符限制'];
|
||||
}
|
||||
} elseif ($msgType === ChatMessage::MSG_TYPE_IMAGE) {
|
||||
if (empty($content) || !filter_var($content, FILTER_VALIDATE_URL)) {
|
||||
return ['valid' => false, 'error' => '图片URL无效'];
|
||||
}
|
||||
}
|
||||
|
||||
return ['valid' => true, 'error' => null];
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user