add vendoring with go dep

vendor/github.com/vmware/govmomi/examples/hosts/main.go

@@ -0,0 +1,87 @@
+/*
+Copyright (c) 2017 VMware, 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.
+*/
+
+/*
+This example program shows how the `view` and `property` packages can
+be used to navigate a vSphere inventory structure using govmomi.
+*/
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"os"
+	"text/tabwriter"
+
+	"github.com/vmware/govmomi/examples"
+	"github.com/vmware/govmomi/units"
+	"github.com/vmware/govmomi/view"
+	"github.com/vmware/govmomi/vim25/mo"
+)
+
+func main() {
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// Connect and login to ESX or vCenter
+	c, err := examples.NewClient(ctx)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	defer c.Logout(ctx)
+
+	// Create a view of HostSystem objects
+	m := view.NewManager(c.Client)
+
+	v, err := m.CreateContainerView(ctx, c.ServiceContent.RootFolder, []string{"HostSystem"}, true)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	defer v.Destroy(ctx)
+
+	// Retrieve summary property for all hosts
+	// Reference: http://pubs.vmware.com/vsphere-60/topic/com.vmware.wssdk.apiref.doc/vim.HostSystem.html
+	var hss []mo.HostSystem
+	err = v.Retrieve(ctx, []string{"HostSystem"}, []string{"summary"}, &hss)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Print summary per host (see also: govc/host/info.go)
+
+	tw := tabwriter.NewWriter(os.Stdout, 2, 0, 2, ' ', 0)
+	fmt.Fprintf(tw, "Name:\tUsed CPU:\tTotal CPU:\tFree CPU:\tUsed Memory:\tTotal Memory:\tFree Memory\t:\n")
+
+	for _, hs := range hss {
+		totalCPU := int64(hs.Summary.Hardware.CpuMhz) * int64(hs.Summary.Hardware.NumCpuCores)
+		freeCPU := int64(totalCPU) - int64(hs.Summary.QuickStats.OverallCpuUsage)
+		freeMemory := int64(hs.Summary.Hardware.MemorySize) - (int64(hs.Summary.QuickStats.OverallMemoryUsage) * 1024 * 1024)
+		fmt.Fprintf(tw, "%s\t", hs.Summary.Config.Name)
+		fmt.Fprintf(tw, "%d\t", hs.Summary.QuickStats.OverallCpuUsage)
+		fmt.Fprintf(tw, "%d\t", totalCPU)
+		fmt.Fprintf(tw, "%d\t", freeCPU)
+		fmt.Fprintf(tw, "%s\t", units.ByteSize(hs.Summary.QuickStats.OverallMemoryUsage))
+		fmt.Fprintf(tw, "%s\t", units.ByteSize(hs.Summary.Hardware.MemorySize))
+		fmt.Fprintf(tw, "%d\t", freeMemory)
+		fmt.Fprintf(tw, "\n")
+	}
+
+	_ = tw.Flush()
+}