Files
common/rabbitmq/instance.go

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package rabbitmq
import (
"context"
"fmt"
"os"
"sync"
"github.com/gogf/gf/v2/frame/g"
"github.com/gogf/gf/v2/util/guid"
)
var (
instanceId string
instanceOnce sync.Once
)
// getInstanceId 获取当前实例的唯一标识(单例)
// 优先级:配置文件 > 环境变量 > 容器名/主机名 > 随机UUID
func getInstanceId() string {
instanceOnce.Do(func() {
ctx := context.Background()
// 1. 优先从配置文件读取(手动指定,最高优先级)
instanceId = g.Cfg().MustGet(ctx, "rabbitmq.instanceName").String()
if instanceId != "" {
return
}
// 2. 读取环境变量Docker/K8s部署时设置
instanceId = os.Getenv("INSTANCE_NAME")
if instanceId != "" {
return
}
// 3. 使用主机名Docker容器名/主机名)
hostname, err := os.Hostname()
if err != nil || hostname == "" {
hostname = "unknown"
}
// 4. 如果主机名是默认值(本地开发),添加随机后缀避免冲突
if hostname == "localhost" || hostname == "unknown" {
instanceId = hostname + "." + guid.S()[:4]
} else {
instanceId = hostname
}
})
return instanceId
}
// GetInstanceQueueName 获取当前实例的响应队列名
// 格式:{baseQueue}.{hostname}.{uuid8}
func GetInstanceQueueName(baseQueue string) string {
if baseQueue == "" {
baseQueue = "ragflow.response"
}
return fmt.Sprintf("%s.%s", baseQueue, getInstanceId())
}