build and convert implementations

centos: WIP

Signed-off-by: Adphi <philippe.adrien.nousse@gmail.com>

pkg/docker/docker.go

@@ -0,0 +1,37 @@
+// Copyright 2022 Linka Cloud  All rights reserved.
+//
+// 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 docker
+
+import (
+	"context"
+	_ "embed"
+	"strings"
+
+	"go.linka.cloud/d2vm/pkg/exec"
+)
+
+func FormatImgName(name string) string {
+	s := strings.Replace(name, ":", "-", -1)
+	s = strings.Replace(s, "/", "_", -1)
+	return s
+}
+
+func Cmd(ctx context.Context, args ...string) error {
+	return exec.Run(ctx, "docker", args...)
+}
+
+func CmdOut(ctx context.Context, args ...string) (string, string, error) {
+	return exec.RunOut(ctx, "docker", args...)
+}

pkg/exec/exec.go

@@ -0,0 +1,57 @@
+// Copyright 2022 Linka Cloud  All rights reserved.
+//
+// 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 exec
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+var (
+	Run = RunNoOut
+
+	CommandContext = exec.CommandContext
+)
+
+func RunStdout(ctx context.Context, c string, args ...string) error {
+	cmd := exec.CommandContext(ctx, c, args...)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func RunNoOut(ctx context.Context, c string, args ...string) error {
+	_, _, err := RunOut(ctx, c, args...)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func RunOut(ctx context.Context, c string, args ...string) (stdout, stderr string, err error) {
+	cmd := exec.CommandContext(ctx, c, args...)
+	var stdo, stde bytes.Buffer
+	cmd.Stdout = &stdo
+	cmd.Stderr = &stde
+	err = cmd.Run()
+	if err != nil {
+		return "", "", fmt.Errorf("%s %s: stdout: %s stderr: %s error: %w", c, strings.Join(args, " "), stdo.String(), stde.String(), err)
+	}
+	return stdo.String(), stde.String(), nil
+}