Use redis for distributed query results when not in dev mode (#653)

- Add appropriate configs for Redis
- Use the Redis pubsub store by default, inmem in dev mode

cli/serve.go

@@ -93,7 +93,15 @@ the way that the kolide server works.
 				}
 			}
 
-			svc, err := service.NewService(ds, pubsub.NewInmemQueryResults(), logger, config, mailService, clock.C)
+			var resultStore kolide.QueryResultStore
+			if devMode {
+				resultStore = pubsub.NewInmemQueryResults()
+			} else {
+				redisPool := pubsub.NewRedisPool(config.Redis.Address, config.Redis.Password)
+				resultStore = pubsub.NewRedisQueryResults(redisPool)
+			}
+
+			svc, err := service.NewService(ds, resultStore, logger, config, mailService, clock.C)
 			if err != nil {
 				initFatal(err, "initializing service")
 			}

server/config/config.go

@@ -22,6 +22,12 @@ type MysqlConfig struct {
 	Database string
 }
 
+// RedisConfig defines configs related to Redis
+type RedisConfig struct {
+	Address  string
+	Password string
+}
+
 // ServerConfig defines configs related to the Kolide server
 type ServerConfig struct {
 	Address string
@@ -79,6 +85,7 @@ type LoggingConfig struct {
 // updated to set and retrieve the configurations as appropriate.
 type KolideConfig struct {
 	Mysql   MysqlConfig
+	Redis   RedisConfig
 	Server  ServerConfig
 	Auth    AuthConfig
 	App     AppConfig
@@ -97,6 +104,10 @@ func (man Manager) addConfigs() {
 	man.addConfigString("mysql.password", "kolide")
 	man.addConfigString("mysql.database", "kolide")
 
+	// Redis
+	man.addConfigString("redis.address", "localhost:6379")
+	man.addConfigString("redis.password", "")
+
 	// Server
 	man.addConfigString("server.address", "0.0.0.0:8080")
 	man.addConfigString("server.cert", "./tools/osquery/kolide.crt")
@@ -148,6 +159,10 @@ func (man Manager) LoadConfig() KolideConfig {
 			Password: man.getConfigString("mysql.password"),
 			Database: man.getConfigString("mysql.database"),
 		},
+		Redis: RedisConfig{
+			Address:  man.getConfigString("redis.address"),
+			Password: man.getConfigString("redis.password"),
+		},
 		Server: ServerConfig{
 			Address: man.getConfigString("server.address"),
 			Cert:    man.getConfigString("server.cert"),