Move config files and folders

server/config.go

@@ -0,0 +1,77 @@
+package server
+
+import (
+	"time"
+)
+
+// Defines default config settings
+const (
+	DefaultListenHTTP                = ":80"
+	DefaultCacheDuration             = 12 * time.Hour
+	DefaultKeepaliveInterval         = 30 * time.Second
+	DefaultManagerInterval           = time.Minute
+	DefaultAtSenderInterval          = 10 * time.Second
+	DefaultMinDelay                  = 10 * time.Second
+	DefaultMaxDelay                  = 3 * 24 * time.Hour
+	DefaultMessageLimit              = 512
+	DefaultFirebaseKeepaliveInterval = time.Hour
+)
+
+// Defines all the limits
+// - global topic limit: max number of topics overall
+// - per visitor request limit: max number of PUT/GET/.. requests (here: 60 requests bucket, replenished at a rate of one per 10 seconds)
+// - per visitor subscription limit: max number of subscriptions (active HTTP connections) per per-visitor/IP
+const (
+	DefaultGlobalTopicLimit             = 5000
+	DefaultVisitorRequestLimitBurst     = 60
+	DefaultVisitorRequestLimitReplenish = 10 * time.Second
+	DefaultVisitorSubscriptionLimit     = 30
+)
+
+// Config is the main config struct for the application. Use New to instantiate a default config struct.
+type Config struct {
+	ListenHTTP                   string
+	ListenHTTPS                  string
+	KeyFile                      string
+	CertFile                     string
+	FirebaseKeyFile              string
+	CacheFile                    string
+	CacheDuration                time.Duration
+	KeepaliveInterval            time.Duration
+	ManagerInterval              time.Duration
+	AtSenderInterval             time.Duration
+	FirebaseKeepaliveInterval    time.Duration
+	MessageLimit                 int
+	MinDelay                     time.Duration
+	MaxDelay                     time.Duration
+	GlobalTopicLimit             int
+	VisitorRequestLimitBurst     int
+	VisitorRequestLimitReplenish time.Duration
+	VisitorSubscriptionLimit     int
+	BehindProxy                  bool
+}
+
+// New instantiates a default new config
+func NewConfig(listenHTTP string) *Config {
+	return &Config{
+		ListenHTTP:                   listenHTTP,
+		ListenHTTPS:                  "",
+		KeyFile:                      "",
+		CertFile:                     "",
+		FirebaseKeyFile:              "",
+		CacheFile:                    "",
+		CacheDuration:                DefaultCacheDuration,
+		KeepaliveInterval:            DefaultKeepaliveInterval,
+		ManagerInterval:              DefaultManagerInterval,
+		MessageLimit:                 DefaultMessageLimit,
+		MinDelay:                     DefaultMinDelay,
+		MaxDelay:                     DefaultMaxDelay,
+		AtSenderInterval:             DefaultAtSenderInterval,
+		FirebaseKeepaliveInterval:    DefaultFirebaseKeepaliveInterval,
+		GlobalTopicLimit:             DefaultGlobalTopicLimit,
+		VisitorRequestLimitBurst:     DefaultVisitorRequestLimitBurst,
+		VisitorRequestLimitReplenish: DefaultVisitorRequestLimitReplenish,
+		VisitorSubscriptionLimit:     DefaultVisitorSubscriptionLimit,
+		BehindProxy:                  false,
+	}
+}