Files
OpenFlare/internal/db/idgen/snowflake.go
T
ryan 63cd906cfc refactor(repo): consolidate openflare-server to root and move subprojects to internal/apps
- Merge all files inside openflare-server to the repository root directory.
- Relocate agent, relay, and flared subprojects from internal/ to internal/apps/.
- Combine docker-compose files and update build context paths to root.
- Update GitHub workflows and Dockerfiles to refer to new directories and package names.
- Rewrite Go package imports across all files.
- Resolve database renew test race condition and clean up docs.
2026-06-19 14:23:29 +08:00

47 lines
1.2 KiB
Go

// Copyright 2025 linux.do
// Copyright 2026 Arctel.net
// SPDX-License-Identifier: Apache-2.0
// Package idgen 提供分布式 ID 生成器
package idgen
import (
"fmt"
"log"
"github.com/Rain-kl/Wavelet/internal/config"
"github.com/bwmarrin/snowflake"
)
// 2025-12-01 00:00:00 UTC 的毫秒时间戳
const epoch int64 = 1764547200000
const maxNegativeIDRetries = 3
var node *snowflake.Node
func init() {
snowflake.Epoch = epoch
nodeID := config.Config.App.NodeID
var err error
node, err = snowflake.NewNode(nodeID)
if err != nil {
log.Fatalf("[Snowflake] init failed: %v\n", err)
}
log.Printf("[Snowflake] initialized with node ID: %d, epoch: 2025-12-01\n", nodeID)
}
// NextUint64ID 生成下一个分布式唯一 ID。
// 理论上不应出现负值;若出现则最多重试 maxNegativeIDRetries 次,仍失败则 panic。
func NextUint64ID() uint64 {
for attempt := 1; attempt <= maxNegativeIDRetries; attempt++ {
id := node.Generate().Int64()
if id >= 0 {
return uint64(id)
}
log.Printf("[Snowflake] generated negative ID: %d (attempt %d/%d)", id, attempt, maxNegativeIDRetries)
}
panic(fmt.Sprintf("[Snowflake] generated negative ID after %d attempts", maxNegativeIDRetries))
}