drone-docker/plugin/docker.go

224 lines
5.5 KiB
Go

package plugin
import (
"fmt"
"os"
"os/exec"
"strings"
"time"
"github.com/urfave/cli/v2"
)
// helper function to create the docker login command.
func commandLogin(login Login) *exec.Cmd {
if login.Email != "" {
return commandLoginEmail(login)
}
return exec.Command(
dockerExe, "login",
"-u", login.Username,
"-p", login.Password,
login.Registry,
)
}
// helper to check if args match "docker pull <image>"
func isCommandPull(args []string) bool {
return len(args) > 2 && args[1] == "pull"
}
func commandPull(repo string) *exec.Cmd {
return exec.Command(dockerExe, "pull", repo)
}
func commandLoginEmail(login Login) *exec.Cmd {
return exec.Command(
dockerExe, "login",
"-u", login.Username,
"-p", login.Password,
"-e", login.Email,
login.Registry,
)
}
// helper function to create the docker info command.
func commandVersion() *exec.Cmd {
return exec.Command(dockerExe, "version")
}
// helper function to create the docker info command.
func commandInfo() *exec.Cmd {
return exec.Command(dockerExe, "info")
}
// helper function to create the docker build command.
func commandBuild(build Build) *exec.Cmd {
args := []string{
"build",
"--rm=true",
"-f", build.Dockerfile,
"-t", build.Name,
}
defaultBuildArgs := []string{
fmt.Sprintf("DOCKER_IMAGE_CREATED=%s", time.Now().Format(time.RFC3339)),
}
args = append(args, build.Context)
if build.Squash {
args = append(args, "--squash")
}
if build.Compress {
args = append(args, "--compress")
}
if build.Pull {
args = append(args, "--pull=true")
}
if build.NoCache {
args = append(args, "--no-cache")
}
for _, arg := range build.CacheFrom.Value() {
args = append(args, "--cache-from", arg)
}
for _, arg := range build.ArgsEnv.Value() {
addProxyValue(&build, arg)
}
for _, arg := range append(defaultBuildArgs, build.Args.Value()...) {
args = append(args, "--build-arg", arg)
}
for _, host := range build.AddHost.Value() {
args = append(args, "--add-host", host)
}
if build.Target != "" {
args = append(args, "--target", build.Target)
}
if build.Quiet {
args = append(args, "--quiet")
}
return exec.Command(dockerExe, args...)
}
// helper function to add proxy values from the environment
func addProxyBuildArgs(build *Build) {
addProxyValue(build, "http_proxy")
addProxyValue(build, "https_proxy")
addProxyValue(build, "no_proxy")
}
// helper function to add the upper and lower case version of a proxy value.
func addProxyValue(build *Build, key string) {
value := getProxyValue(key)
if len(value) > 0 && !hasProxyBuildArg(build, key) {
build.Args = *cli.NewStringSlice(append(build.Args.Value(), fmt.Sprintf("%s=%s", key, value))...)
build.Args = *cli.NewStringSlice(append(build.Args.Value(), fmt.Sprintf("%s=%s", strings.ToUpper(key), value))...)
}
}
// helper function to get a proxy value from the environment.
//
// assumes that the upper and lower case versions of are the same.
func getProxyValue(key string) string {
value := os.Getenv(key)
if len(value) > 0 {
return value
}
return os.Getenv(strings.ToUpper(key))
}
// helper function that looks to see if a proxy value was set in the build args.
func hasProxyBuildArg(build *Build, key string) bool {
keyUpper := strings.ToUpper(key)
for _, s := range build.Args.Value() {
if strings.HasPrefix(s, key) || strings.HasPrefix(s, keyUpper) {
return true
}
}
return false
}
// helper function to create the docker tag command.
func commandTag(build Build, tag string) *exec.Cmd {
var (
source = build.Name
target = fmt.Sprintf("%s:%s", build.Repo, tag)
)
return exec.Command(
dockerExe, "tag", source, target,
)
}
// helper function to create the docker push command.
func commandPush(build Build, tag string) *exec.Cmd {
target := fmt.Sprintf("%s:%s", build.Repo, tag)
return exec.Command(dockerExe, "push", target)
}
// helper function to create the docker daemon command.
func commandDaemon(daemon Daemon) *exec.Cmd {
args := []string{
"--data-root", daemon.StoragePath,
"--host=unix:///var/run/docker.sock",
"--seccomp-profile=/etc/docker/default.json",
}
if daemon.StorageDriver != "" {
args = append(args, "-s", daemon.StorageDriver)
}
if daemon.Insecure && daemon.Registry != "" {
args = append(args, "--insecure-registry", daemon.Registry)
}
if daemon.IPv6 {
args = append(args, "--ipv6")
}
if len(daemon.Mirror) != 0 {
args = append(args, "--registry-mirror", daemon.Mirror)
}
if len(daemon.Bip) != 0 {
args = append(args, "--bip", daemon.Bip)
}
for _, dns := range daemon.DNS.Value() {
args = append(args, "--dns", dns)
}
for _, dnsSearch := range daemon.DNSSearch.Value() {
args = append(args, "--dns-search", dnsSearch)
}
if len(daemon.MTU) != 0 {
args = append(args, "--mtu", daemon.MTU)
}
if daemon.Experimental {
args = append(args, "--experimental")
}
return exec.Command(dockerdExe, args...)
}
// helper to check if args match "docker prune"
func isCommandPrune(args []string) bool {
return len(args) > 3 && args[2] == "prune"
}
func commandPrune() *exec.Cmd {
return exec.Command(dockerExe, "system", "prune", "-f")
}
// helper to check if args match "docker rmi"
func isCommandRmi(args []string) bool {
return len(args) > 2 && args[1] == "rmi"
}
func commandRmi(tag string) *exec.Cmd {
return exec.Command(dockerExe, "rmi", tag)
}
// trace writes each command to stdout with the command wrapped in an xml
// tag so that it can be extracted and displayed in the logs.
func trace(cmd *exec.Cmd) {
fmt.Fprintf(os.Stdout, "+ %s\n", strings.Join(cmd.Args, " "))
}