// run is responsible for preparing environment for actual build.
// It accepts factoryFunc and an ordered array of SCMAuths.
func run(builderFactory factoryFunc, scmAuths []scmauth.SCMAuth) {
client, endpoint, err := dockerutil.NewHelper().GetClient()
if err != nil {
glog.Fatalf("Error obtaining docker client: %v", err)
}
buildStr := os.Getenv("BUILD")
build := api.Build{}
if err := latest.Codec.DecodeInto([]byte(buildStr), &build); err != nil {
glog.Fatalf("Unable to parse build: %v", err)
}
var (
authcfg docker.AuthConfiguration
authPresent bool
)
output := true
if len(build.Parameters.Output.DockerImageReference) == 0 {
if build.Parameters.Output.To != nil {
glog.Fatalf("Cannot determine an output image reference. Make sure a registry service is running.")
}
output = false
}
if output {
authcfg, authPresent = dockercfg.NewHelper().GetDockerAuth(
build.Parameters.Output.DockerImageReference,
dockercfg.PullAuthType,
)
}
if build.Parameters.Source.SourceSecret != nil {
if err := setupSourceSecret(build.Parameters.Source.SourceSecret.Name, scmAuths); err != nil {
glog.Fatalf("Cannot setup secret file for accessing private repository: %v", err)
}
}
b := builderFactory(client, endpoint, authcfg, authPresent, &build)
if err = b.Build(); err != nil {
glog.Fatalf("Build error: %v", err)
}
if !output {
glog.Warning("Build does not have an Output defined, no output image was pushed to a registry.")
}
}
// Build executes a Docker build
func (d *DockerBuilder) Build() error {
buildDir, err := ioutil.TempDir("", "docker-build")
if err != nil {
return err
}
if err = d.fetchSource(buildDir); err != nil {
return err
}
if err = d.addBuildParameters(buildDir); err != nil {
return err
}
glog.V(4).Infof("Starting Docker build from %s/%s BuildConfig ...", d.build.Namespace, d.build.Name)
if err = d.dockerBuild(buildDir); err != nil {
return err
}
tag := d.build.Parameters.Output.DockerImageReference
defer removeImage(d.dockerClient, tag)
dockerImageRef := d.build.Parameters.Output.DockerImageReference
if len(dockerImageRef) != 0 {
// Get the Docker push authentication
pushAuthConfig, authPresent := dockercfg.NewHelper().GetDockerAuth(
dockerImageRef,
dockercfg.PushAuthType,
)
if authPresent {
glog.V(3).Infof("Using Docker authentication provided")
d.auth = pushAuthConfig
}
glog.Infof("Pushing %s image ...", dockerImageRef)
if err := pushImage(d.dockerClient, tag, d.auth); err != nil {
return fmt.Errorf("Failed to push image: %v", err)
}
glog.Infof("Successfully pushed %s", dockerImageRef)
}
return nil
}
// Build executes the STI build
func (s *STIBuilder) Build() error {
tag := s.build.Parameters.Output.DockerImageReference
config := &stiapi.Config{
BuilderImage: s.build.Parameters.Strategy.SourceStrategy.From.Name,
DockerConfig: &stiapi.DockerConfig{Endpoint: s.dockerSocket},
Source: s.build.Parameters.Source.Git.URI,
ContextDir: s.build.Parameters.Source.ContextDir,
DockerCfgPath: os.Getenv(dockercfg.PullAuthType),
Tag: tag,
ScriptsURL: s.build.Parameters.Strategy.SourceStrategy.Scripts,
Environment: getBuildEnvVars(s.build),
Incremental: s.build.Parameters.Strategy.SourceStrategy.Incremental,
}
if s.build.Parameters.Revision != nil && s.build.Parameters.Revision.Git != nil &&
s.build.Parameters.Revision.Git.Commit != "" {
config.Ref = s.build.Parameters.Revision.Git.Commit
} else if s.build.Parameters.Source.Git.Ref != "" {
config.Ref = s.build.Parameters.Source.Git.Ref
}
if errs := validation.ValidateConfig(config); len(errs) != 0 {
var buffer bytes.Buffer
for _, ve := range errs {
buffer.WriteString(ve.Error())
buffer.WriteString(", ")
}
return errors.New(buffer.String())
}
// If DockerCfgPath is provided in api.Config, then attempt to read the the
// dockercfg file and get the authentication for pulling the builder image.
if r, err := os.Open(config.DockerCfgPath); err == nil {
config.PullAuthentication = stidocker.GetImageRegistryAuth(r, config.BuilderImage)
glog.Infof("Using provided pull secret for pulling %s image", config.BuilderImage)
}
glog.V(2).Infof("Creating a new S2I builder with build config: %#v\n", describe.DescribeConfig(config))
builder, err := sti.GetStrategy(config)
if err != nil {
return err
}
defer removeImage(s.dockerClient, tag)
glog.V(4).Infof("Starting S2I build from %s/%s BuildConfig ...", s.build.Namespace, s.build.Name)
if _, err = builder.Build(config); err != nil {
return err
}
dockerImageRef := s.build.Parameters.Output.DockerImageReference
if len(dockerImageRef) != 0 {
// Get the Docker push authentication
pushAuthConfig, authPresent := dockercfg.NewHelper().GetDockerAuth(
dockerImageRef,
dockercfg.PushAuthType,
)
if authPresent {
glog.Infof("Using provided push secret for pushing %s image", dockerImageRef)
s.auth = pushAuthConfig
}
glog.Infof("Pushing %s image ...", dockerImageRef)
if err := pushImage(s.dockerClient, tag, s.auth); err != nil {
return fmt.Errorf("Failed to push image: %v", err)
}
glog.Infof("Successfully pushed %s", dockerImageRef)
glog.Flush()
}
return nil
}