mirror of https://github.com/status-im/consul.git
57 lines
1.3 KiB
Go
57 lines
1.3 KiB
Go
// Copyright (c) HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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package utils
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import (
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"bytes"
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"fmt"
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"io"
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"os"
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"os/exec"
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"strings"
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"github.com/hashicorp/go-version"
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)
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// DockerExec simply shell out to the docker CLI binary on your host.
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func DockerExec(args []string, stdout io.Writer) error {
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return cmdExec("docker", "docker", args, stdout, "")
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}
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// DockerImageVersion retrieves the value of the org.opencontainers.image.version label from the specified image.
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func DockerImageVersion(imageName string) (*version.Version, error) {
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var b strings.Builder
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err := cmdExec("docker", "docker", []string{"image", "inspect", "--format", `{{index .Config.Labels "org.opencontainers.image.version"}}`, imageName}, &b, "")
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if err != nil {
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return nil, err
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}
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output := b.String()
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return version.NewVersion(strings.TrimSpace(output))
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}
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func cmdExec(name, binary string, args []string, stdout io.Writer, dir string) error {
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if binary == "" {
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panic("binary named " + name + " was not detected")
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}
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var errWriter bytes.Buffer
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if stdout == nil {
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stdout = os.Stdout
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}
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cmd := exec.Command(binary, args...)
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if dir != "" {
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cmd.Dir = dir
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}
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cmd.Stdout = stdout
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cmd.Stderr = &errWriter
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cmd.Stdin = nil
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if err := cmd.Run(); err != nil {
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return fmt.Errorf("could not invoke %q: %v : %s", name, err, errWriter.String())
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}
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return nil
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}
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