- forward updated labels/annotations for downward API compat

- refactor queue.Pod construction to take functional options, privatize Pod fields
- refactor DelayFIFO and HistoricalFIFO to offer consistent, more useful Pop() funcs
- refactor pod update processing changes; long term we should somehow combine with the special pod config source that we are using for mirror pods
- task launch timer cleanup

contrib/mesos/pkg/executor/node.go

@@ -0,0 +1,64 @@
+/*
+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 executor
+
+import (
+	mesos "github.com/mesos/mesos-go/mesosproto"
+)
+
+type NodeInfo struct {
+	Cores int
+	Mem   int64 // in bytes
+}
+
+func nodeInfo(si *mesos.SlaveInfo, ei *mesos.ExecutorInfo) NodeInfo {
+	var executorCPU, executorMem float64
+
+	// get executor resources
+	if ei != nil {
+		for _, r := range ei.GetResources() {
+			if r == nil || r.GetType() != mesos.Value_SCALAR {
+				continue
+			}
+			switch r.GetName() {
+			case "cpus":
+				executorCPU = r.GetScalar().GetValue()
+			case "mem":
+				executorMem = r.GetScalar().GetValue()
+			}
+		}
+	}
+
+	// get resource capacity of the node
+	ni := NodeInfo{}
+	for _, r := range si.GetResources() {
+		if r == nil || r.GetType() != mesos.Value_SCALAR {
+			continue
+		}
+
+		switch r.GetName() {
+		case "cpus":
+			// We intentionally take the floor of executorCPU because cores are integers
+			// and we would loose a complete cpu here if the value is <1.
+			// TODO(sttts): switch to float64 when "Machine Allocables" are implemented
+			ni.Cores = int(r.GetScalar().GetValue() - float64(int(executorCPU)))
+		case "mem":
+			ni.Mem = int64(r.GetScalar().GetValue()-executorMem) * 1024 * 1024
+		}
+	}
+	return ni
+}