Add Mesos slave attributes as node labels

- pre-create node api objects from the scheduler when offers arrive
- decline offers until nodes a registered
- turn slave attributes as k8s.mesosphere.io/attribute-* labels
- update labels from executor Register/Reregister
- watch nodes in scheduler to make non-Mesos labels available for NodeSelector matching
- add unit tests for label predicate
- add e2e test to check that slave attributes really end up as node labels

test/e2e/mesos.go

@@ -0,0 +1,53 @@
+/*
+Copyright 2015 The Kubernetes Authors 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.
+*/
+
+package e2e
+
+import (
+	"k8s.io/kubernetes/pkg/api"
+	"k8s.io/kubernetes/pkg/labels"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+	"k8s.io/kubernetes/pkg/fields"
+)
+
+var _ = Describe("Mesos", func() {
+	framework := NewFramework("pods")
+
+	BeforeEach(func() {
+		SkipUnlessProviderIs("mesos/docker")
+	})
+
+	It("applies slave attributes as labels", func() {
+		nodeClient := framework.Client.Nodes()
+
+		rackA := labels.SelectorFromSet(map[string]string{"k8s.mesosphere.io/attribute-rack": "1"})
+		nodes, err := nodeClient.List(rackA, fields.Everything())
+		if err != nil {
+			Failf("Failed to query for node: %v", err)
+		}
+		Expect(len(nodes.Items)).To(Equal(1))
+
+		var addr string
+		for _, a := range nodes.Items[0].Status.Addresses {
+			if a.Type == api.NodeInternalIP {
+				addr = a.Address
+			}
+		}
+		Expect(len(addr)).NotTo(Equal(""))
+	})
+})