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// Copyright (c) 2020 Cisco and/or its affiliates.
//
// 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/ioutil"
"os/exec"
"path"
"strings"
"github.com/sirupsen/logrus"
)
const (
versionScriptPath = "./src/scripts/version"
defaultVppApiDir = "/usr/share/vpp/api"
)
func ResolveVppVersion(inputDir string) string {
// assuming VPP package is installed
if inputDir == defaultVppApiDir {
// resolve VPP version using dpkg
cmd := exec.Command("dpkg-query", "-f", "${Version}", "-W", "vpp")
out, err := cmd.CombinedOutput()
if err != nil {
logrus.Warnf("resolving VPP version from installed package failed: %v", err)
logrus.Warnf("command output: %s", out)
} else {
version := strings.TrimSpace(string(out))
logrus.Debugf("resolved VPP version from installed package: %v", version)
return version
}
}
// check if inside VPP git repo
if inputDir != "" {
repo := findVppGitRepo(inputDir)
if repo != "" {
cmd := exec.Command(versionScriptPath)
cmd.Dir = repo
out, err := cmd.CombinedOutput()
if err != nil {
logrus.Warnf("resolving VPP version from version script failed: %v", err)
logrus.Warnf("command output: %s", out)
} else {
version := strings.TrimSpace(string(out))
logrus.Debugf("resolved VPP version from version script: %v", version)
return version
}
}
file, err := ioutil.ReadFile(path.Join(inputDir, "VPP_VERSION"))
if err == nil {
return strings.TrimSpace(string(file))
}
}
logrus.Warnf("VPP version could not be resolved, you can set it manually using VPP_API_VERSION env var")
return "unknown"
}
func findVppGitRepo(dir string) string {
cmd := exec.Command("git", "rev-parse", "--show-toplevel")
cmd.Dir = dir
out, err := cmd.CombinedOutput()
if err != nil {
logrus.Warnf("checking VPP git repo failed: %v", err)
logrus.Warnf("command output: %s", out)
return ""
}
return strings.TrimSpace(string(out))
}
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