mirror of
https://github.com/DullJZ/s3-balance.git
synced 2026-06-29 15:01:23 +08:00
Select Retry
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@@ -2,6 +2,7 @@ package balancer
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import (
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"fmt"
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"time"
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"github.com/DullJZ/s3-balance/internal/bucket"
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"github.com/DullJZ/s3-balance/internal/config"
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@@ -20,7 +21,7 @@ type Balancer struct {
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// NewBalancer 创建新的负载均衡器
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func NewBalancer(manager *bucket.Manager, cfg *config.BalancerConfig) (*Balancer, error) {
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var strategy Strategy
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// 根据配置创建对应的策略实例
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switch cfg.Strategy {
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case "round-robin":
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@@ -46,6 +47,34 @@ func NewBalancer(manager *bucket.Manager, cfg *config.BalancerConfig) (*Balancer
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// SelectBucket 选择一个存储桶
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// 首先过滤出有足够空间的存储桶,然后使用策略选择
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func (b *Balancer) SelectBucket(key string, size int64) (*bucket.BucketInfo, error) {
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attempts := 1
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delay := time.Second
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if b.config != nil {
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if b.config.RetryAttempts > 0 {
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attempts = b.config.RetryAttempts
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}
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if b.config.RetryDelay > 0 {
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delay = b.config.RetryDelay
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}
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}
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var lastErr error
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for i := 0; i < attempts; i++ {
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selected, err := b.selectOnce(key, size)
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if err == nil {
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return selected, nil
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}
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lastErr = err
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if i < attempts-1 {
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time.Sleep(delay)
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}
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}
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return nil, lastErr
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}
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func (b *Balancer) selectOnce(key string, size int64) (*bucket.BucketInfo, error) {
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// 获取所有可用的存储桶
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buckets := b.manager.GetAvailableBuckets()
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if len(buckets) == 0 {
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@@ -126,7 +155,7 @@ func (b *Balancer) GetAvailableBuckets() []*bucket.BucketInfo {
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func (b *Balancer) GetBucketStats() map[string]BucketStats {
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stats := make(map[string]BucketStats)
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buckets := b.manager.GetAllBuckets()
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for _, bucket := range buckets {
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stats[bucket.Config.Name] = BucketStats{
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Name: bucket.Config.Name,
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@@ -137,7 +166,7 @@ func (b *Balancer) GetBucketStats() map[string]BucketStats {
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Weight: bucket.Config.Weight,
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}
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}
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return stats
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}
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@@ -44,7 +44,7 @@ type BucketConfig struct {
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// BalancerConfig 负载均衡配置
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type BalancerConfig struct {
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Strategy string `yaml:"strategy"` // 负载均衡策略: "round-robin", "least-space", "weighted", "consistent-hash"
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Strategy string `yaml:"strategy"` // 负载均衡策略: "round-robin", "least-space", "weighted", "consistent-hash"
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HealthCheckPeriod time.Duration `yaml:"health_check_period"` // 健康检查周期
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UpdateStatsPeriod time.Duration `yaml:"update_stats_period"` // 统计更新周期
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RetryAttempts int `yaml:"retry_attempts"` // 重试次数
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@@ -60,22 +60,22 @@ type MetricsConfig struct {
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// S3APIConfig S3兼容API配置
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type S3APIConfig struct {
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AccessKey string `yaml:"access_key"` // S3访问密钥ID
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SecretKey string `yaml:"secret_key"` // S3秘密访问密钥
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VirtualHost bool `yaml:"virtual_host"` // 是否使用虚拟主机模式
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ProxyMode bool `yaml:"proxy_mode"` // 是否使用代理模式(而非重定向)
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AuthRequired bool `yaml:"auth_required"` // 是否需要认证
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AccessKey string `yaml:"access_key"` // S3访问密钥ID
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SecretKey string `yaml:"secret_key"` // S3秘密访问密钥
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VirtualHost bool `yaml:"virtual_host"` // 是否使用虚拟主机模式
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ProxyMode bool `yaml:"proxy_mode"` // 是否使用代理模式(而非重定向)
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AuthRequired bool `yaml:"auth_required"` // 是否需要认证
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}
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// DatabaseConfig 数据库配置
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type DatabaseConfig struct {
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Type string `yaml:"type"` // 数据库类型: sqlite, mysql, postgres
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DSN string `yaml:"dsn"` // 数据源名称
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MaxOpenConns int `yaml:"max_open_conns"` // 最大打开连接数
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MaxIdleConns int `yaml:"max_idle_conns"` // 最大空闲连接数
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Type string `yaml:"type"` // 数据库类型: sqlite, mysql, postgres
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DSN string `yaml:"dsn"` // 数据源名称
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MaxOpenConns int `yaml:"max_open_conns"` // 最大打开连接数
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MaxIdleConns int `yaml:"max_idle_conns"` // 最大空闲连接数
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ConnMaxLifetime int `yaml:"conn_max_lifetime"` // 连接最大生命周期(秒)
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LogLevel string `yaml:"log_level"` // 日志级别: silent, error, warn, info
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AutoMigrate bool `yaml:"auto_migrate"` // 是否自动迁移
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LogLevel string `yaml:"log_level"` // 日志级别: silent, error, warn, info
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AutoMigrate bool `yaml:"auto_migrate"` // 是否自动迁移
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}
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// Load 从文件加载配置
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@@ -95,7 +95,7 @@ func Load(configPath string) (*Config, error) {
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// 解析容量大小
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for i := range config.Buckets {
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if err := config.Buckets[i].ParseMaxSize(); err != nil {
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return nil, fmt.Errorf("failed to parse max size for bucket %s: %w",
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return nil, fmt.Errorf("failed to parse max size for bucket %s: %w",
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config.Buckets[i].Name, err)
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}
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}
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