forked from rook/rook
Huamin Chen
6c11ff52d4
run "rook discover" on storage nodes and discover devices on each node. The discovered disks are saved in a per node configmap, local-device-nodename. Device information consits of name and persistent names, uuid, partition, filesystem, rotational, readonly, size, etc. Signed-off-by: Huamin Chen <hchen@redhat.com>
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package sys
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import (
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"regexp"
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"strings"
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)
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// grep finds the *first* line that matches, rather than multiple lines
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func Grep(input, searchFor string) string {
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logger.Debugf("grep. search=%s, input=%s", searchFor, input)
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if input == "" || searchFor == "" {
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return ""
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}
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for _, line := range strings.Split(input, "\n") {
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if matched, _ := regexp.MatchString(searchFor, line); matched {
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logger.Debugf("grep found line: %s", line)
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return line
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}
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}
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return ""
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}
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// awk finds the space-delimited token at the given position.
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// 0 returns the whole line, while 1 is the first token.
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func Awk(input string, position int, delimit string) string {
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logger.Debugf("awk %d from %s", position, input)
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if position == 0 {
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return input
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}
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words := strings.Split(strings.TrimSpace(input), delimit)
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position--
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if position < 0 || position >= len(words) {
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// out of range
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return ""
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}
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result := strings.TrimSpace(words[position])
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logger.Debugf("found awk string %s", result)
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return result
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}
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