/
docker.go
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/
docker.go
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// MIT License
//
// Copyright (c) 2018 buildtool
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
package docker
import (
"bufio"
"bytes"
"context"
"fmt"
"io"
"net"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/apex/log"
"github.com/docker/docker/api/types"
"github.com/docker/docker/api/types/registry"
"github.com/docker/docker/client"
)
type Client interface {
RegistryLogin(ctx context.Context, auth registry.AuthConfig) (registry.AuthenticateOKBody, error)
ImageBuild(ctx context.Context, buildContext io.Reader, options types.ImageBuildOptions) (types.ImageBuildResponse, error)
ImagePush(ctx context.Context, image string, options types.ImagePushOptions) (io.ReadCloser, error)
DialHijack(ctx context.Context, url, proto string, meta map[string][]string) (net.Conn, error)
BuildCancel(ctx context.Context, id string) error
}
var _ Client = &client.Client{}
func Tag(registry, image, tag string) string {
slug := SlugifyTag(tag)
if slug != tag {
log.Debugf("<yellow>Warning: tag was changed from '%s' to '%s' due to Dockers rules.</yellow>\n", tag, slug)
}
return fmt.Sprintf("%s/%s:%s", registry, image, slug)
}
func SlugifyTag(tag string) string {
validChars := regexp.MustCompile(`(?i)[^a-zA-Z0-9.\-_]`)
temp := validChars.ReplaceAllString(tag, "")
leading := regexp.MustCompile(`^([.-]*)([a-zA-Z0-9.\-_]*)$`)
result := leading.FindStringSubmatch(temp)[2]
if len(result) > 128 {
return result[:128]
}
return result
}
func ParseDockerignore(dir, dockerfile string) ([]string, error) {
var defaultIgnore = []string{"k8s"}
filePath := filepath.Join(dir, ".dockerignore")
if _, err := os.Stat(filePath); os.IsNotExist(err) {
return defaultIgnore, nil
}
if file, err := os.ReadFile(filePath); err != nil {
return defaultIgnore, err
} else {
var result = defaultIgnore
scanner := bufio.NewScanner(bytes.NewReader(file))
for scanner.Scan() {
text := scanner.Text()
if len(text) > 0 && text != dockerfile {
result = append(result, text)
}
}
return result, nil
}
}
func FindStages(content string) []string {
var stages []string
re := regexp.MustCompile(`(?i)^FROM .* AS (.*)$`)
scanner := bufio.NewScanner(strings.NewReader(content))
for scanner.Scan() {
text := scanner.Text()
matches := re.FindStringSubmatch(text)
if len(matches) != 0 {
stages = append(stages, matches[1])
}
}
return stages
}
func DefaultClient() (Client, error) {
return client.NewClientWithOpts(
client.WithTLSClientConfigFromEnv(),
client.WithHostFromEnv(),
client.WithAPIVersionNegotiation(),
client.WithVersionFromEnv())
}