package com.iailab.framework.tenant.core.mq.rocketmq;
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import cn.hutool.core.lang.Assert;
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import cn.hutool.core.util.StrUtil;
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import com.iailab.framework.tenant.core.context.TenantContextHolder;
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import org.apache.rocketmq.client.hook.ConsumeMessageContext;
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import org.apache.rocketmq.client.hook.ConsumeMessageHook;
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import org.apache.rocketmq.common.message.MessageExt;
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import org.springframework.messaging.handler.invocation.InvocableHandlerMethod;
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import java.util.List;
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import static com.iailab.framework.web.core.util.WebFrameworkUtils.HEADER_TENANT_ID;
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/**
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* RocketMQ 消息队列的多租户 {@link ConsumeMessageHook} 实现类
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*
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* Consumer 消费消息时,将消息的 Header 的租户编号,添加到 {@link TenantContextHolder} 中,通过 {@link InvocableHandlerMethod} 实现
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*
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* @author iailab
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*/
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public class TenantRocketMQConsumeMessageHook implements ConsumeMessageHook {
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@Override
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public String hookName() {
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return getClass().getSimpleName();
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}
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@Override
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public void consumeMessageBefore(ConsumeMessageContext context) {
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// 校验,消息必须是单条,不然设置租户可能不正确
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List<MessageExt> messages = context.getMsgList();
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Assert.isTrue(messages.size() == 1, "消息条数({})不正确", messages.size());
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// 设置租户编号
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String tenantId = messages.get(0).getUserProperty(HEADER_TENANT_ID);
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if (StrUtil.isNotEmpty(tenantId)) {
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TenantContextHolder.setTenantId(Long.parseLong(tenantId));
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}
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}
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@Override
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public void consumeMessageAfter(ConsumeMessageContext context) {
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TenantContextHolder.clear();
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}
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}
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