forked from containers/build
/
isolator.go
119 lines (102 loc) · 2.54 KB
/
isolator.go
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// Copyright 2015 The appc Authors
//
// 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 main
import (
"io"
"io/ioutil"
"os"
"github.com/spf13/cobra"
)
var (
cmdIso = &cobra.Command{
Use: "isolator [command]",
Short: "Manage isolators",
}
cmdAddIso = &cobra.Command{
Use: "add NAME JSON_FILE",
Short: "Add an isolator",
Long: "Updates the ACI to contain an isolator with the given name and value. If the isolator exists, its value will be changed.",
Example: "acbuild isolator add resource/cpu ./value.json",
Run: runWrapper(runAddIso),
}
cmdRmIso = &cobra.Command{
Use: "remove NAME",
Aliases: []string{"rm"},
Short: "Remove an isolator",
Long: "Updates the current ACI's manifest to not contain the given isolator",
Example: "acbuild isolator remove resource/memory",
Run: runWrapper(runRemoveIso),
}
)
func init() {
cmdAcbuild.AddCommand(cmdIso)
cmdIso.AddCommand(cmdAddIso)
cmdIso.AddCommand(cmdRmIso)
}
func runAddIso(cmd *cobra.Command, args []string) (exit int) {
if len(args) == 0 {
cmd.Usage()
return 1
}
if len(args) != 2 {
stderr("isolator add: incorrect number of arguments")
return 1
}
var r io.Reader
var err error
if args[1] == "-" {
r = os.Stdin
} else {
file, err := os.Open(args[1])
if err != nil {
stderr("isolator add: %v", err)
return 1
}
defer file.Close()
r = file
}
val, err := ioutil.ReadAll(r)
if err != nil {
stderr("isolator add: %v", err)
return 1
}
if debug {
stderr("Adding isolator %q=%q", args[0], string(val))
}
err = newACBuild().AddIsolator(args[0], val)
if err != nil {
stderr("isolator add: %v", err)
return 1
}
return 0
}
func runRemoveIso(cmd *cobra.Command, args []string) (exit int) {
if len(args) == 0 {
cmd.Usage()
return 1
}
if len(args) > 1 {
stderr("isolator remove: incorrect number of arguments")
return 1
}
if debug {
stderr("Removing isolator %q", args[0])
}
err := newACBuild().RemoveIsolator(args[0])
if err != nil {
stderr("isolator remove: %v", err)
return 1
}
return 0
}