[#70] db-client*: add :keep-alive? option (@kirankulkarni)

Author: ptaoussanis

src/taoensso/faraday.clj

@@ -93,8 +93,8 @@
     etc."
   (memoize
    (fn [{:keys [provider creds access-key secret-key endpoint proxy-host proxy-port
-                proxy-username proxy-password
-               conn-timeout max-conns max-error-retry socket-timeout]
+               proxy-username proxy-password
+               conn-timeout max-conns max-error-retry socket-timeout keep-alive?]
         :as client-opts}]
      (if (empty? client-opts) (AmazonDynamoDBClient.) ; Default client
        (let [creds (or creds (:credentials client-opts)) ; Deprecated opt
@@ -116,7 +116,8 @@
                conn-timeout    (.setConnectionTimeout g)
                max-conns       (.setMaxConnections    g)
                max-error-retry (.setMaxErrorRetry     g)
-               socket-timeout  (.setSocketTimeout     g))]
+               socket-timeout  (.setSocketTimeout     g)
+               keep-alive?     (.setUseTcpKeepAlive   g))]
          (doto-cond [g (if provider
                          (AmazonDynamoDBClient. provider  client-config)
                          (AmazonDynamoDBClient. aws-creds client-config))]