SessionsPolicy and sessions adaptor, history and _example written.

Former-commit-id: e8b0dde3cb3b72919f01b9d836d8ccb3d4e20214

adaptors/sessions/sessiondb/redis/service/config.go

@@ -0,0 +1,78 @@
+package service
+
+import (
+	"time"
+
+	"github.com/imdario/mergo"
+)
+
+const (
+	// DefaultRedisNetwork the redis network option, "tcp"
+	DefaultRedisNetwork = "tcp"
+	// DefaultRedisAddr the redis address option, "127.0.0.1:6379"
+	DefaultRedisAddr = "127.0.0.1:6379"
+	// DefaultRedisIdleTimeout the redis idle timeout option, time.Duration(5) * time.Minute
+	DefaultRedisIdleTimeout = time.Duration(5) * time.Minute
+	// DefaultRedisMaxAgeSeconds the redis storage last parameter (SETEX), 31556926.0 (1 year)
+	DefaultRedisMaxAgeSeconds = 31556926.0 //1 year
+)
+
+// Config the redis configuration used inside sessions
+type Config struct {
+	// Network "tcp"
+	Network string
+	// Addr "127.0.0.1:6379"
+	Addr string
+	// Password string .If no password then no 'AUTH'. Default ""
+	Password string
+	// If Database is empty "" then no 'SELECT'. Default ""
+	Database string
+	// MaxIdle 0 no limit
+	MaxIdle int
+	// MaxActive 0 no limit
+	MaxActive int
+	// IdleTimeout  time.Duration(5) * time.Minute
+	IdleTimeout time.Duration
+	// Prefix "myprefix-for-this-website". Default ""
+	Prefix string
+	// MaxAgeSeconds how much long the redis should keep the session in seconds. Default 31556926.0 (1 year)
+	MaxAgeSeconds int
+}
+
+// DefaultConfig returns the default configuration for Redis service
+func DefaultConfig() Config {
+	return Config{
+		Network:       DefaultRedisNetwork,
+		Addr:          DefaultRedisAddr,
+		Password:      "",
+		Database:      "",
+		MaxIdle:       0,
+		MaxActive:     0,
+		IdleTimeout:   DefaultRedisIdleTimeout,
+		Prefix:        "",
+		MaxAgeSeconds: DefaultRedisMaxAgeSeconds,
+	}
+}
+
+// Merge merges the default with the given config and returns the result
+func (c Config) Merge(cfg []Config) (config Config) {
+
+	if len(cfg) > 0 {
+		config = cfg[0]
+		mergo.Merge(&config, c)
+	} else {
+		_default := c
+		config = _default
+	}
+
+	return
+}
+
+// MergeSingle merges the default with the given config and returns the result
+func (c Config) MergeSingle(cfg Config) (config Config) {
+
+	config = cfg
+	mergo.Merge(&config, c)
+
+	return
+}