52 lines
1.5 KiB
Go
52 lines
1.5 KiB
Go
/*
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© Copyright IBM Corporation 2020
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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 mqversion
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import (
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"fmt"
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"strings"
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"github.com/ibm-messaging/mq-container/internal/command"
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)
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// Get will return the current MQ version
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func Get() (string, error) {
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mqVersion, _, err := command.Run("dspmqver", "-b", "-f", "2")
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if err != nil {
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return "", fmt.Errorf("Error Getting MQ version: %v", err)
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}
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return strings.TrimSpace(mqVersion), nil
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}
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// Compare returns an integer comparing two MQ version strings lexicographically. The result will be 0 if currentVersion==checkVersion, -1 if currentVersion < checkVersion, and +1 if currentVersion > checkVersion
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func Compare(checkVersion string) (int, error) {
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currentVersion, err := Get()
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if err != nil {
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return 0, err
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}
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// trim any suffix from MQ version x.x.x.x
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currentVersion = currentVersion[0:7]
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if currentVersion < checkVersion {
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return -1, nil
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} else if currentVersion == checkVersion {
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return 0, nil
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} else if currentVersion > checkVersion {
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return 1, nil
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}
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return 0, fmt.Errorf("Failed to compare MQ versions")
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}
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