/
list.go
102 lines (87 loc) · 2.6 KB
/
list.go
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// Copyright 2015 CoreOS, Inc.
//
// 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.
//+build linux
package main
import (
"fmt"
"strings"
"github.com/coreos/rocket/Godeps/_workspace/src/github.com/appc/spec/schema"
common "github.com/coreos/rocket/common"
"github.com/coreos/rocket/networking/netinfo"
)
var (
cmdList = &Command{
Name: "list",
Summary: "List containers",
Usage: "",
Run: runList,
}
flagNoLegend bool
flagFullOutput bool
)
func init() {
commands = append(commands, cmdList)
cmdList.Flags.BoolVar(&flagNoLegend, "no-legend", false, "suppress a legend with the list")
cmdList.Flags.BoolVar(&flagFullOutput, "full", false, "use long output format")
}
func runList(args []string) (exit int) {
if !flagNoLegend {
fmt.Fprintf(tabOut, "UUID\tACI\tSTATE\tNETWORKS\n")
}
if err := walkContainers(includeMostDirs, func(c *container) {
m := schema.PodManifest{}
app_zero := ""
if !c.isPreparing && !c.isAbortedPrepare && !c.isExitedDeleting {
// TODO(vc): we should really hold a shared lock here to prevent gc of the container
manifFile, err := c.readFile(common.PodManifestPath(""))
if err != nil {
stderr("Unable to read manifest: %v", err)
return
}
err = m.UnmarshalJSON(manifFile)
if err != nil {
stderr("Unable to load manifest: %v", err)
return
}
if len(m.Apps) == 0 {
stderr("Container contains zero apps")
return
}
app_zero = m.Apps[0].Name.String()
}
uuid := ""
if flagFullOutput {
uuid = c.uuid.String()
} else {
uuid = c.uuid.String()[:8]
}
fmt.Fprintf(tabOut, "%s\t%s\t%s\t%s\n", uuid, app_zero, c.getState(), fmtNets(c.nets))
for i := 1; i < len(m.Apps); i++ {
fmt.Fprintf(tabOut, "\t%s\n", m.Apps[i].Name.String())
}
}); err != nil {
stderr("Failed to get container handles: %v", err)
return 1
}
tabOut.Flush()
return 0
}
func fmtNets(nis []netinfo.NetInfo) string {
parts := []string{}
for _, ni := range nis {
// there will be IPv6 support soon so distinguish between v4 and v6
parts = append(parts, fmt.Sprintf("%v:ip4=%v", ni.NetName, ni.IP))
}
return strings.Join(parts, ", ")
}