1 files changed, 201 insertions, 0 deletions
diff --git a/vendor/github.com/go-redis/redis/options.go b/vendor/github.com/go-redis/redis/options.go
new file mode 100644
index 000000000..cd6fa981a
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/options.go
@@ -0,0 +1,201 @@
+package redis
+
+import (
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net"
+	"net/url"
+	"runtime"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/go-redis/redis/internal/pool"
+)
+
+type Options struct {
+	// The network type, either tcp or unix.
+	// Default is tcp.
+	Network string
+	// host:port address.
+	Addr string
+
+	// Dialer creates new network connection and has priority over
+	// Network and Addr options.
+	Dialer func() (net.Conn, error)
+
+	// Hook that is called when new connection is established.
+	OnConnect func(*Conn) error
+
+	// Optional password. Must match the password specified in the
+	// requirepass server configuration option.
+	Password string
+	// Database to be selected after connecting to the server.
+	DB int
+
+	// Maximum number of retries before giving up.
+	// Default is to not retry failed commands.
+	MaxRetries int
+
+	// Maximum backoff between each retry.
+	// Default is 512 seconds; -1 disables backoff.
+	MaxRetryBackoff time.Duration
+
+	// Dial timeout for establishing new connections.
+	// Default is 5 seconds.
+	DialTimeout time.Duration
+	// Timeout for socket reads. If reached, commands will fail
+	// with a timeout instead of blocking.
+	// Default is 3 seconds.
+	ReadTimeout time.Duration
+	// Timeout for socket writes. If reached, commands will fail
+	// with a timeout instead of blocking.
+	// Default is ReadTimeout.
+	WriteTimeout time.Duration
+
+	// Maximum number of socket connections.
+	// Default is 10 connections per every CPU as reported by runtime.NumCPU.
+	PoolSize int
+	// Amount of time client waits for connection if all connections
+	// are busy before returning an error.
+	// Default is ReadTimeout + 1 second.
+	PoolTimeout time.Duration
+	// Amount of time after which client closes idle connections.
+	// Should be less than server's timeout.
+	// Default is 5 minutes.
+	IdleTimeout time.Duration
+	// Frequency of idle checks.
+	// Default is 1 minute.
+	// When minus value is set, then idle check is disabled.
+	IdleCheckFrequency time.Duration
+
+	// Enables read only queries on slave nodes.
+	ReadOnly bool
+
+	// TLS Config to use. When set TLS will be negotiated.
+	TLSConfig *tls.Config
+}
+
+func (opt *Options) init() {
+	if opt.Network == "" {
+		opt.Network = "tcp"
+	}
+	if opt.Dialer == nil {
+		opt.Dialer = func() (net.Conn, error) {
+			conn, err := net.DialTimeout(opt.Network, opt.Addr, opt.DialTimeout)
+			if opt.TLSConfig == nil || err != nil {
+				return conn, err
+			}
+			t := tls.Client(conn, opt.TLSConfig)
+			return t, t.Handshake()
+		}
+	}
+	if opt.PoolSize == 0 {
+		opt.PoolSize = 10 * runtime.NumCPU()
+	}
+	if opt.DialTimeout == 0 {
+		opt.DialTimeout = 5 * time.Second
+	}
+	switch opt.ReadTimeout {
+	case -1:
+		opt.ReadTimeout = 0
+	case 0:
+		opt.ReadTimeout = 3 * time.Second
+	}
+	switch opt.WriteTimeout {
+	case -1:
+		opt.WriteTimeout = 0
+	case 0:
+		opt.WriteTimeout = opt.ReadTimeout
+	}
+	if opt.PoolTimeout == 0 {
+		opt.PoolTimeout = opt.ReadTimeout + time.Second
+	}
+	if opt.IdleTimeout == 0 {
+		opt.IdleTimeout = 5 * time.Minute
+	}
+	if opt.IdleCheckFrequency == 0 {
+		opt.IdleCheckFrequency = time.Minute
+	}
+	switch opt.MaxRetryBackoff {
+	case -1:
+		opt.MaxRetryBackoff = 0
+	case 0:
+		opt.MaxRetryBackoff = 512 * time.Millisecond
+	}
+}
+
+// ParseURL parses an URL into Options that can be used to connect to Redis.
+func ParseURL(redisURL string) (*Options, error) {
+	o := &Options{Network: "tcp"}
+	u, err := url.Parse(redisURL)
+	if err != nil {
+		return nil, err
+	}
+
+	if u.Scheme != "redis" && u.Scheme != "rediss" {
+		return nil, errors.New("invalid redis URL scheme: " + u.Scheme)
+	}
+
+	if u.User != nil {
+		if p, ok := u.User.Password(); ok {
+			o.Password = p
+		}
+	}
+
+	if len(u.Query()) > 0 {
+		return nil, errors.New("no options supported")
+	}
+
+	h, p, err := net.SplitHostPort(u.Host)
+	if err != nil {
+		h = u.Host
+	}
+	if h == "" {
+		h = "localhost"
+	}
+	if p == "" {
+		p = "6379"
+	}
+	o.Addr = net.JoinHostPort(h, p)
+
+	f := strings.FieldsFunc(u.Path, func(r rune) bool {
+		return r == '/'
+	})
+	switch len(f) {
+	case 0:
+		o.DB = 0
+	case 1:
+		if o.DB, err = strconv.Atoi(f[0]); err != nil {
+			return nil, fmt.Errorf("invalid redis database number: %q", f[0])
+		}
+	default:
+		return nil, errors.New("invalid redis URL path: " + u.Path)
+	}
+
+	if u.Scheme == "rediss" {
+		o.TLSConfig = &tls.Config{ServerName: h}
+	}
+	return o, nil
+}
+
+func newConnPool(opt *Options) *pool.ConnPool {
+	return pool.NewConnPool(&pool.Options{
+		Dialer:             opt.Dialer,
+		PoolSize:           opt.PoolSize,
+		PoolTimeout:        opt.PoolTimeout,
+		IdleTimeout:        opt.IdleTimeout,
+		IdleCheckFrequency: opt.IdleCheckFrequency,
+	})
+}
+
+// PoolStats contains pool state information and accumulated stats.
+type PoolStats struct {
+	Requests uint32 // number of times a connection was requested by the pool
+	Hits     uint32 // number of times free connection was found in the pool
+	Timeouts uint32 // number of times a wait timeout occurred
+
+	TotalConns uint32 // the number of total connections in the pool
+	FreeConns  uint32 // the number of free connections in the pool
+}