104 lines
3.0 KiB
Go
104 lines
3.0 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package command
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import (
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"fmt"
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"strings"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/spf13/cobra"
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"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
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pb "github.com/coreos/etcd/etcdserver/etcdserverpb"
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)
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var (
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rangeLimit int
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rangeSortOrder string
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rangeSortTarget string
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)
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// NewRangeCommand returns the cobra command for "range".
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func NewRangeCommand() *cobra.Command {
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cmd := &cobra.Command{
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Use: "range",
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Short: "Range gets the keys in the range from the store.",
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Run: rangeCommandFunc,
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}
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cmd.Flags().StringVar(&rangeSortOrder, "order", "", "order of results; ASCEND or DESCEND")
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cmd.Flags().StringVar(&rangeSortTarget, "sort-by", "", "sort target; CREATE, KEY, MODIFY, VALUE, or VERSION")
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cmd.Flags().IntVar(&rangeLimit, "limit", 0, "maximum number of results")
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return cmd
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}
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// rangeCommandFunc executes the "range" command.
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func rangeCommandFunc(cmd *cobra.Command, args []string) {
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if len(args) == 0 {
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ExitWithError(ExitBadArgs, fmt.Errorf("range command needs arguments."))
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}
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var rangeEnd []byte
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key := []byte(args[0])
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if len(args) > 1 {
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rangeEnd = []byte(args[1])
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}
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sortByOrder := pb.RangeRequest_NONE
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sortOrder := strings.ToUpper(rangeSortOrder)
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switch {
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case sortOrder == "ASCEND":
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sortByOrder = pb.RangeRequest_ASCEND
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case sortOrder == "DESCEND":
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sortByOrder = pb.RangeRequest_DESCEND
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case sortOrder == "":
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sortByOrder = pb.RangeRequest_NONE
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default:
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ExitWithError(ExitBadFeature, fmt.Errorf("bad sort order %v", rangeSortOrder))
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}
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sortByTarget := pb.RangeRequest_KEY
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sortTarget := strings.ToUpper(rangeSortTarget)
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switch {
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case sortTarget == "CREATE":
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sortByTarget = pb.RangeRequest_CREATE
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case sortTarget == "KEY":
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sortByTarget = pb.RangeRequest_KEY
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case sortTarget == "MODIFY":
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sortByTarget = pb.RangeRequest_MOD
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case sortTarget == "VALUE":
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sortByTarget = pb.RangeRequest_VALUE
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case sortTarget == "VERSION":
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sortByTarget = pb.RangeRequest_VERSION
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case sortTarget == "":
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sortByTarget = pb.RangeRequest_KEY
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default:
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ExitWithError(ExitBadFeature, fmt.Errorf("bad sort target %v", rangeSortTarget))
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}
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req := &pb.RangeRequest{
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Key: key,
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RangeEnd: rangeEnd,
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SortOrder: sortByOrder,
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SortTarget: sortByTarget,
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Limit: int64(rangeLimit),
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}
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resp, err := mustClient(cmd).KV.Range(context.Background(), req)
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if err != nil {
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ExitWithError(ExitError, err)
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}
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for _, kv := range resp.Kvs {
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fmt.Printf("%s %s\n", string(kv.Key), string(kv.Value))
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}
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}
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