Added option to disable offline queue

Signed-off-by: DTrejo <david.trejo@voxer.com>

index.js

@@ -50,6 +50,8 @@ function RedisClient(stream, options) {
     if (options.connect_timeout && !isNaN(options.connect_timeout) && options.connect_timeout > 0) {
         this.connect_timeout = +options.connect_timeout;
     }
+    this.enable_offline_queue = this.options.enable_offline_queue || true;
+
     this.initialize_retry_vars();
     this.pub_sub_mode = false;
     this.subscription_set = {};
@@ -661,11 +663,18 @@ RedisClient.prototype.send_command = function (command, args, callback) {
             if (!stream.writable) {
                 console.log("send command: stream is not writeable.");
             }
+        }
 
+        if (this.enable_offline_queue) {
+            if (exports.debug_mode) {
                 console.log("Queueing " + command + " for next server connection.");
             }
             this.offline_queue.push(command_obj);
             this.should_buffer = true;
+        } else {
+            command_obj.callback(new Error('send command: stream is not writeable.'));
+        }
+
         return false;
     }
 

test.js

@@ -1377,6 +1377,48 @@ tests.HMSET_THROWS_ON_NON_STRINGS = function () {
     next(name);
 };
 
+tests.ENABLE_OFFLINE_QUEUE_TRUE = function () {
+    var name = "ENABLE_OFFLINE_QUEUE_TRUE";
+    var cli = redis.createClient(9999, null, {
+        max_attempts: 1
+        // default :)
+        // enable_offline_queue: true
+    });
+    cli.on('error', function(e) {
+        // ignore, b/c expecting a "can't connect" error
+    });
+    return setTimeout(function() {
+        cli.set(name, name, function(err, result) {
+            assert.ifError(err);
+        });
+
+        return setTimeout(function(){
+            assert.strictEqual(cli.offline_queue.length, 1);
+            return next(name);
+        }, 25);
+    }, 50);
+};
+
+tests.ENABLE_OFFLINE_QUEUE_FALSE = function () {
+    var name = "ENABLE_OFFLINE_QUEUE_FALSE";
+    var cli = redis.createClient(9999, null, {
+        max_attempts: 1,
+        enable_offline_queue: false
+    });
+    cli.on('error', function() {
+        // ignore, see above
+    });
+    assert.throws(function () {
+        cli.set(name, name)
+    })
+    assert.doesNotThrow(function () {
+        cli.set(name, name, function (err) {
+            // should callback with an error
+            assert.ok(err);
+        });
+    });
+};
+
 // TODO - need a better way to test auth, maybe auto-config a local Redis server or something.
 // Yes, this is the real password.  Please be nice, thanks.
 tests.auth = function () {