986f076276
Add a new generic container registry client via a new `container` package. Use this to create a command line utility as well as a new upload target for container registries. The code uses the github.com/containers/* project and packages to interact with container registires that is also used by skopeo, podman et al. One if the dependencies is `proglottis/gpgme` that is using cgo to bind libgpgme, so we have to add the corresponding devel package to the BuildRequires as well as installing it on CI. Checks will follow later via an integration test.
57 lines
1.5 KiB
Go
57 lines
1.5 KiB
Go
package client
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import (
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"fmt"
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"io"
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"os"
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exec "golang.org/x/sys/execabs"
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)
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// Program is an interface to execute external programs.
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type Program interface {
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Output() ([]byte, error)
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Input(in io.Reader)
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}
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// ProgramFunc is a type of function that initializes programs based on arguments.
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type ProgramFunc func(args ...string) Program
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// NewShellProgramFunc creates programs that are executed in a Shell.
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func NewShellProgramFunc(name string) ProgramFunc {
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return NewShellProgramFuncWithEnv(name, nil)
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}
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// NewShellProgramFuncWithEnv creates programs that are executed in a Shell with environment variables
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func NewShellProgramFuncWithEnv(name string, env *map[string]string) ProgramFunc {
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return func(args ...string) Program {
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return &Shell{cmd: createProgramCmdRedirectErr(name, args, env)}
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}
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}
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func createProgramCmdRedirectErr(commandName string, args []string, env *map[string]string) *exec.Cmd {
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programCmd := exec.Command(commandName, args...)
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programCmd.Env = os.Environ()
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if env != nil {
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for k, v := range *env {
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programCmd.Env = append(programCmd.Env, fmt.Sprintf("%s=%s", k, v))
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}
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}
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programCmd.Stderr = os.Stderr
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return programCmd
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}
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// Shell invokes shell commands to talk with a remote credentials helper.
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type Shell struct {
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cmd *exec.Cmd
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}
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// Output returns responses from the remote credentials helper.
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func (s *Shell) Output() ([]byte, error) {
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return s.cmd.Output()
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}
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// Input sets the input to send to a remote credentials helper.
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func (s *Shell) Input(in io.Reader) {
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s.cmd.Stdin = in
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}
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