First commit

pkg/proxy/loadbalancer.go

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+/*
+Copyright 2014 Google Inc. All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+// Loadbalancer interface. Implementations use loadbalancer_<strategy> naming.
+
+package proxy
+
+import (
+	"net"
+)
+
+type LoadBalancer interface {
+	// LoadBalance takes an incoming request and figures out where to route it to.
+	// Determination is based on destination service (for example, 'mysql') as
+	// well as the source making the connection.
+	LoadBalance(service string, srcAddr net.Addr) (string, error)
+}