|
| 1 | +/* |
| 2 | + Copyright The containerd Authors. |
| 3 | +
|
| 4 | + Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + you may not use this file except in compliance with the License. |
| 6 | + You may obtain a copy of the License at |
| 7 | +
|
| 8 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | +
|
| 10 | + Unless required by applicable law or agreed to in writing, software |
| 11 | + distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + See the License for the specific language governing permissions and |
| 14 | + limitations under the License. |
| 15 | +*/ |
| 16 | + |
| 17 | +package leases |
| 18 | + |
| 19 | +import ( |
| 20 | + "fmt" |
| 21 | + "os" |
| 22 | + "sort" |
| 23 | + "strings" |
| 24 | + "text/tabwriter" |
| 25 | + "time" |
| 26 | + |
| 27 | + "github.com/containerd/containerd/cmd/ctr/commands" |
| 28 | + "github.com/containerd/containerd/leases" |
| 29 | + "github.com/pkg/errors" |
| 30 | + "github.com/urfave/cli" |
| 31 | +) |
| 32 | + |
| 33 | +// Command is the cli command for managing content |
| 34 | +var Command = cli.Command{ |
| 35 | + Name: "leases", |
| 36 | + Usage: "manage leases", |
| 37 | + Subcommands: cli.Commands{ |
| 38 | + listCommand, |
| 39 | + createCommand, |
| 40 | + deleteCommand, |
| 41 | + }, |
| 42 | +} |
| 43 | + |
| 44 | +var listCommand = cli.Command{ |
| 45 | + |
| 46 | + Name: "list", |
| 47 | + Aliases: []string{"ls"}, |
| 48 | + Usage: "list all active leases", |
| 49 | + ArgsUsage: "[flags] <filter>", |
| 50 | + Description: "list active leases by containerd", |
| 51 | + Flags: []cli.Flag{ |
| 52 | + cli.BoolFlag{ |
| 53 | + Name: "quiet, q", |
| 54 | + Usage: "print only the blob digest", |
| 55 | + }, |
| 56 | + }, |
| 57 | + Action: func(context *cli.Context) error { |
| 58 | + var ( |
| 59 | + filters = context.Args() |
| 60 | + quiet = context.Bool("quiet") |
| 61 | + ) |
| 62 | + client, ctx, cancel, err := commands.NewClient(context) |
| 63 | + if err != nil { |
| 64 | + return err |
| 65 | + } |
| 66 | + defer cancel() |
| 67 | + |
| 68 | + ls := client.LeasesService() |
| 69 | + |
| 70 | + leaseList, err := ls.List(ctx, filters...) |
| 71 | + if err != nil { |
| 72 | + return errors.Wrap(err, "failed to list leases") |
| 73 | + } |
| 74 | + if quiet { |
| 75 | + for _, l := range leaseList { |
| 76 | + fmt.Println(l.ID) |
| 77 | + } |
| 78 | + return nil |
| 79 | + } |
| 80 | + tw := tabwriter.NewWriter(os.Stdout, 1, 8, 1, ' ', 0) |
| 81 | + fmt.Fprintln(tw, "ID\tCREATED AT\tLABELS\t") |
| 82 | + for _, l := range leaseList { |
| 83 | + labels := "-" |
| 84 | + if len(l.Labels) > 0 { |
| 85 | + var pairs []string |
| 86 | + for k, v := range l.Labels { |
| 87 | + pairs = append(pairs, fmt.Sprintf("%v=%v", k, v)) |
| 88 | + } |
| 89 | + sort.Strings(pairs) |
| 90 | + labels = strings.Join(pairs, ",") |
| 91 | + } |
| 92 | + |
| 93 | + fmt.Fprintf(tw, "%v\t%v\t%s\t\n", |
| 94 | + l.ID, |
| 95 | + l.CreatedAt.Local().Format(time.RFC3339), |
| 96 | + labels) |
| 97 | + } |
| 98 | + |
| 99 | + return tw.Flush() |
| 100 | + }, |
| 101 | +} |
| 102 | + |
| 103 | +var createCommand = cli.Command{ |
| 104 | + Name: "create", |
| 105 | + Usage: "create lease", |
| 106 | + ArgsUsage: "[flags] <label>=<value> ...", |
| 107 | + Description: "create a new lease", |
| 108 | + Flags: []cli.Flag{ |
| 109 | + cli.StringFlag{ |
| 110 | + Name: "id", |
| 111 | + Usage: "set the id for the lease, will be generated by default", |
| 112 | + }, |
| 113 | + cli.DurationFlag{ |
| 114 | + Name: "expires, x", |
| 115 | + Usage: "expiration of lease (0 value will not expire)", |
| 116 | + Value: 24 * 3600 * time.Second, |
| 117 | + }, |
| 118 | + }, |
| 119 | + Action: func(context *cli.Context) error { |
| 120 | + var labelstr = context.Args() |
| 121 | + client, ctx, cancel, err := commands.NewClient(context) |
| 122 | + if err != nil { |
| 123 | + return err |
| 124 | + } |
| 125 | + defer cancel() |
| 126 | + |
| 127 | + ls := client.LeasesService() |
| 128 | + opts := []leases.Opt{} |
| 129 | + if len(labelstr) > 0 { |
| 130 | + labels := map[string]string{} |
| 131 | + for _, lstr := range labelstr { |
| 132 | + l := strings.SplitN(lstr, "=", 2) |
| 133 | + if len(l) == 1 { |
| 134 | + labels[l[0]] = "" |
| 135 | + } else { |
| 136 | + labels[l[0]] = l[1] |
| 137 | + } |
| 138 | + } |
| 139 | + opts = append(opts, leases.WithLabels(labels)) |
| 140 | + } |
| 141 | + |
| 142 | + if id := context.String("id"); id != "" { |
| 143 | + opts = append(opts, leases.WithID(id)) |
| 144 | + } |
| 145 | + if exp := context.Duration("expires"); exp > 0 { |
| 146 | + opts = append(opts, leases.WithExpiration(exp)) |
| 147 | + } |
| 148 | + |
| 149 | + l, err := ls.Create(ctx, opts...) |
| 150 | + if err != nil { |
| 151 | + return err |
| 152 | + } |
| 153 | + |
| 154 | + fmt.Println(l.ID) |
| 155 | + |
| 156 | + return nil |
| 157 | + }, |
| 158 | +} |
| 159 | + |
| 160 | +var deleteCommand = cli.Command{ |
| 161 | + Name: "delete", |
| 162 | + Aliases: []string{"rm"}, |
| 163 | + Usage: "delete a lease", |
| 164 | + ArgsUsage: "[flags] <lease id> ...", |
| 165 | + Description: "delete a lease", |
| 166 | + Action: func(context *cli.Context) error { |
| 167 | + var lids = context.Args() |
| 168 | + if len(lids) == 0 { |
| 169 | + return cli.ShowSubcommandHelp(context) |
| 170 | + } |
| 171 | + client, ctx, cancel, err := commands.NewClient(context) |
| 172 | + if err != nil { |
| 173 | + return err |
| 174 | + } |
| 175 | + defer cancel() |
| 176 | + |
| 177 | + ls := client.LeasesService() |
| 178 | + for _, lid := range lids { |
| 179 | + lease := leases.Lease{ |
| 180 | + ID: lid, |
| 181 | + } |
| 182 | + if err := ls.Delete(ctx, lease); err != nil { |
| 183 | + return err |
| 184 | + } |
| 185 | + fmt.Println(lid) |
| 186 | + } |
| 187 | + |
| 188 | + return nil |
| 189 | + }, |
| 190 | +} |
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