forked from mirror/redis
128 lines
3.2 KiB
Go
128 lines
3.2 KiB
Go
package redis
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import (
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"net"
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"time"
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"gopkg.in/redis.v4/internal/pool"
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)
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type Options struct {
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// The network type, either tcp or unix.
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// Default is tcp.
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Network string
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// host:port address.
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Addr string
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// Dialer creates new network connection and has priority over
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// Network and Addr options.
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Dialer func() (net.Conn, error)
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// An optional password. Must match the password specified in the
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// requirepass server configuration option.
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Password string
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// A database to be selected after connecting to server.
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DB int
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// The maximum number of retries before giving up.
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// Default is to not retry failed commands.
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MaxRetries int
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// Sets the deadline for establishing new connections. If reached,
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// dial will fail with a timeout.
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// Default is 5 seconds.
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DialTimeout time.Duration
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// Sets the deadline for socket reads. If reached, commands will
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// fail with a timeout instead of blocking.
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ReadTimeout time.Duration
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// Sets the deadline for socket writes. If reached, commands will
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// fail with a timeout instead of blocking.
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WriteTimeout time.Duration
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// The maximum number of socket connections.
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// Default is 10 connections.
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PoolSize int
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// Specifies amount of time client waits for connection if all
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// connections are busy before returning an error.
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// Default is 1 second.
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PoolTimeout time.Duration
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// Specifies amount of time after which client closes idle
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// connections. Should be less than server's timeout.
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// Default is to not close idle connections.
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IdleTimeout time.Duration
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// The frequency of idle checks.
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// Default is 1 minute.
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IdleCheckFrequency time.Duration
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// Enables read queries for a connection to a Redis Cluster slave node.
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ReadOnly bool
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}
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func (opt *Options) getNetwork() string {
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if opt.Network == "" {
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return "tcp"
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}
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return opt.Network
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}
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func (opt *Options) getDialer() func() (net.Conn, error) {
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if opt.Dialer != nil {
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return opt.Dialer
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}
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return func() (net.Conn, error) {
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return net.DialTimeout(opt.getNetwork(), opt.Addr, opt.getDialTimeout())
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}
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}
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func (opt *Options) getPoolSize() int {
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if opt.PoolSize == 0 {
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return 10
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}
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return opt.PoolSize
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}
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func (opt *Options) getDialTimeout() time.Duration {
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if opt.DialTimeout == 0 {
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return 5 * time.Second
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}
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return opt.DialTimeout
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}
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func (opt *Options) getPoolTimeout() time.Duration {
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if opt.PoolTimeout == 0 {
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return 1 * time.Second
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}
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return opt.PoolTimeout
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}
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func (opt *Options) getIdleTimeout() time.Duration {
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return opt.IdleTimeout
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}
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func (opt *Options) getIdleCheckFrequency() time.Duration {
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if opt.IdleCheckFrequency == 0 {
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return time.Minute
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}
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return opt.IdleCheckFrequency
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}
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func newConnPool(opt *Options) *pool.ConnPool {
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return pool.NewConnPool(
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opt.getDialer(),
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opt.getPoolSize(),
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opt.getPoolTimeout(),
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opt.getIdleTimeout(),
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opt.getIdleCheckFrequency(),
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)
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}
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// PoolStats contains pool state information and accumulated stats.
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type PoolStats struct {
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Requests uint32 // number of times a connection was requested by the pool
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Hits uint32 // number of times free connection was found in the pool
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Timeouts uint32 // number of times a wait timeout occurred
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TotalConns uint32 // the number of total connections in the pool
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FreeConns uint32 // the number of free connections in the pool
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}
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