func checkForPorts(repo *app.SourceRepository) []string {
info := repo.Info()
if info == nil || info.Dockerfile == nil {
return nil
}
node := info.Dockerfile.AST()
return dockerfile.LastExposedPorts(node)
}
func exposedPortsAreNumeric(node *dockerfileparser.Node) error {
for _, port := range dockerfileutil.LastExposedPorts(node) {
if _, err := strconv.ParseInt(port, 10, 32); err != nil {
return fmt.Errorf("could not parse %q: must be numeric", port)
}
}
return nil
}
// FromDockerfile generates an ImageRef from a given name, directory, and context path.
// The directory and context path will be joined and the resulting path should be a
// Dockerfile from where the image's ports will be extracted.
func (g *imageRefGenerator) FromDockerfile(name string, dir string, context string) (*ImageRef, error) {
// Look for Dockerfile in repository
file, err := os.Open(filepath.Join(dir, context, "Dockerfile"))
if err != nil {
return nil, err
}
node, err := parser.Parse(file)
if err != nil {
return nil, err
}
ports := dockerfile.LastExposedPorts(node)
return g.FromNameAndPorts(name, ports)
}
// buildPipelines converts a set of resolved, valid references into pipelines.
func (c *AppConfig) buildPipelines(components app.ComponentReferences, environment app.Environment) (app.PipelineGroup, error) {
pipelines := app.PipelineGroup{}
names := map[string]int{}
for _, group := range components.Group() {
glog.V(4).Infof("found group: %#v", group)
common := app.PipelineGroup{}
for _, ref := range group {
var pipeline *app.Pipeline
var name string
if ref.Input().ExpectToBuild {
glog.V(4).Infof("will use %q as the base image for a source build of %q", ref, ref.Input().Uses)
input, err := app.InputImageFromMatch(ref.Input().ResolvedMatch)
if err != nil {
return nil, fmt.Errorf("can't build %q: %v", ref.Input(), err)
}
if !input.AsImageStream {
glog.Warningf("Could not find an image stream match for %q. Make sure that a Docker image with that tag is available on the node for the build to succeed.", ref.Input().ResolvedMatch.Value)
}
strategy, source, err := app.StrategyAndSourceForRepository(ref.Input().Uses, input)
if err != nil {
return nil, fmt.Errorf("can't build %q: %v", ref.Input(), err)
}
// Override resource names from the cli
name = c.Name
if len(name) == 0 {
var ok bool
name, ok = (app.NameSuggestions{source, input}).SuggestName()
if !ok {
return nil, fmt.Errorf("can't suggest a valid name, please specify a name with --name")
}
}
name, err = ensureValidUniqueName(names, name)
source.Name = name
if err != nil {
return nil, err
}
// Append any exposed ports from Dockerfile to input image
if ref.Input().Uses.IsDockerBuild() && ref.Input().Uses.Info() != nil {
node := ref.Input().Uses.Info().Dockerfile.AST()
ports := dockerfileutil.LastExposedPorts(node)
if len(ports) > 0 {
if input.Info == nil {
input.Info = &imageapi.DockerImage{
Config: &imageapi.DockerConfig{},
}
}
input.Info.Config.ExposedPorts = map[string]struct{}{}
for _, p := range ports {
input.Info.Config.ExposedPorts[p] = struct{}{}
}
}
}
if pipeline, err = app.NewBuildPipeline(ref.Input().String(), input, c.OutputDocker, strategy, c.GetBuildEnvironment(environment), source); err != nil {
return nil, fmt.Errorf("can't build %q: %v", ref.Input(), err)
}
} else {
glog.V(4).Infof("will include %q", ref)
input, err := app.InputImageFromMatch(ref.Input().ResolvedMatch)
if err != nil {
return nil, fmt.Errorf("can't include %q: %v", ref.Input(), err)
}
name = c.Name
if len(name) == 0 {
var ok bool
name, ok = input.SuggestName()
if !ok {
return nil, fmt.Errorf("can't suggest a valid name, please specify a name with --name")
}
}
name, err = ensureValidUniqueName(names, name)
if err != nil {
return nil, err
}
input.ObjectName = name
if pipeline, err = app.NewImagePipeline(ref.Input().String(), input); err != nil {
return nil, fmt.Errorf("can't include %q: %v", ref.Input(), err)
}
}
if err := pipeline.NeedsDeployment(environment, c.Labels, name); err != nil {
return nil, fmt.Errorf("can't set up a deployment for %q: %v", ref.Input(), err)
}
common = append(common, pipeline)
}
if err := common.Reduce(); err != nil {
return nil, fmt.Errorf("can't create a pipeline from %s: %v", common, err)
}
pipelines = append(pipelines, common...)
}
return pipelines, nil
}
// NewBuildPipeline creates a new pipeline with components that are expected to
// be built.
func (pb *pipelineBuilder) NewBuildPipeline(from string, input *ImageRef, sourceRepository *SourceRepository) (*Pipeline, error) {
strategy, source, err := StrategyAndSourceForRepository(sourceRepository, input)
if err != nil {
return nil, fmt.Errorf("can't build %q: %v", from, err)
}
var name string
output := &ImageRef{
OutputImage: true,
AsImageStream: !pb.outputDocker,
}
if len(pb.to) > 0 {
outputImageRef, err := image.ParseDockerImageReference(pb.to)
if err != nil {
return nil, err
}
output.Reference = outputImageRef
name, err = pb.nameGenerator.Generate(NameSuggestions{source, output, input})
if err != nil {
return nil, err
}
} else {
name, err = pb.nameGenerator.Generate(NameSuggestions{source, input})
if err != nil {
return nil, err
}
output.Reference = image.DockerImageReference{
Name: name,
Tag: image.DefaultImageTag,
}
}
source.Name = name
// Append any exposed ports from Dockerfile to input image
if sourceRepository.IsDockerBuild() && sourceRepository.Info() != nil {
node := sourceRepository.Info().Dockerfile.AST()
ports := dockerfile.LastExposedPorts(node)
if len(ports) > 0 {
if input.Info == nil {
input.Info = &image.DockerImage{
Config: &image.DockerConfig{},
}
}
input.Info.Config.ExposedPorts = map[string]struct{}{}
for _, p := range ports {
input.Info.Config.ExposedPorts[p] = struct{}{}
}
}
}
if input != nil {
// TODO: assumes that build doesn't change the image metadata. In the future
// we could get away with deferred generation possibly.
output.Info = input.Info
}
build := &BuildRef{
Source: source,
Input: input,
Strategy: strategy,
Output: output,
Env: pb.environment,
}
return &Pipeline{
Name: name,
From: from,
InputImage: input,
Image: output,
Build: build,
}, nil
}
// NewBuildPipeline creates a new pipeline with components that are expected to
// be built.
func (pb *pipelineBuilder) NewBuildPipeline(from string, resolvedMatch *ComponentMatch, sourceRepository *SourceRepository) (*Pipeline, error) {
input, err := InputImageFromMatch(resolvedMatch)
if err != nil {
return nil, fmt.Errorf("can't build %q: %v", from, err)
}
if !input.AsImageStream {
msg := "Could not find an image stream match for %q. Make sure that a Docker image with that tag is available on the node for the build to succeed."
glog.Warningf(msg, resolvedMatch.Value)
}
strategy, source, err := StrategyAndSourceForRepository(sourceRepository, input)
if err != nil {
return nil, fmt.Errorf("can't build %q: %v", from, err)
}
name, err := pb.nameGenerator.Generate(NameSuggestions{source, input})
if err != nil {
return nil, err
}
source.Name = name
// Append any exposed ports from Dockerfile to input image
if sourceRepository.IsDockerBuild() && sourceRepository.Info() != nil {
node := sourceRepository.Info().Dockerfile.AST()
ports := dockerfile.LastExposedPorts(node)
if len(ports) > 0 {
if input.Info == nil {
input.Info = &image.DockerImage{
Config: &image.DockerConfig{},
}
}
input.Info.Config.ExposedPorts = map[string]struct{}{}
for _, p := range ports {
input.Info.Config.ExposedPorts[p] = struct{}{}
}
}
}
output := &ImageRef{
Reference: image.DockerImageReference{
Name: name,
Tag: image.DefaultImageTag,
},
OutputImage: true,
AsImageStream: !pb.outputDocker,
}
if input != nil {
// TODO: assumes that build doesn't change the image metadata. In the future
// we could get away with deferred generation possibly.
output.Info = input.Info
}
build := &BuildRef{
Source: source,
Input: input,
Strategy: strategy,
Output: output,
Env: pb.environment,
}
return &Pipeline{
Name: name,
From: from,
InputImage: input,
Image: output,
Build: build,
}, nil
}
// Generate accepts a path to an app.json file and generates a template from it
func (g *Generator) Generate(body []byte) (*templateapi.Template, error) {
appJSON := &AppJSON{}
if err := json.Unmarshal(body, appJSON); err != nil {
return nil, err
}
glog.V(4).Infof("app.json: %#v", appJSON)
name := g.Name
if len(name) == 0 && len(g.LocalPath) > 0 {
name = filepath.Base(g.LocalPath)
}
template := &templateapi.Template{}
template.Name = name
template.Annotations = make(map[string]string)
template.Annotations["openshift.io/website"] = appJSON.Website
template.Annotations["k8s.io/display-name"] = appJSON.Name
template.Annotations["k8s.io/description"] = appJSON.Description
template.Annotations["tags"] = strings.Join(appJSON.Keywords, ",")
template.Annotations["iconURL"] = appJSON.Logo
// create parameters and environment for containers
allEnv := make(app.Environment)
for k, v := range appJSON.Env {
if v.EnvVar != nil {
allEnv[k] = fmt.Sprintf("${%s}", k)
}
}
envVars := allEnv.List()
for _, v := range envVars {
env := appJSON.Env[v.Name]
if env.EnvVar == nil {
continue
}
e := env.EnvVar
displayName := v.Name
displayName = strings.Join(strings.Split(strings.ToLower(displayName), "_"), " ")
displayName = strings.ToUpper(displayName[:1]) + displayName[1:]
param := templateapi.Parameter{
Name: v.Name,
DisplayName: displayName,
Description: e.Description,
Value: e.Value,
}
switch e.Generator {
case "secret":
param.Generate = "expression"
param.From = "[a-zA-Z0-9]{14}"
}
if len(param.Value) == 0 && e.Default != nil {
switch t := e.Default.(type) {
case string:
param.Value = t
case float64, float32:
out, _ := json.Marshal(t)
param.Value = string(out)
}
}
template.Parameters = append(template.Parameters, param)
}
warnings := make(map[string][]string)
if len(appJSON.Formation) == 0 {
glog.V(4).Infof("No formation in app.json, adding a default web")
// TODO: read Procfile for command?
appJSON.Formation = map[string]Formation{
"web": {
Quantity: 1,
},
}
msg := "adding a default formation 'web' with scale 1"
warnings[msg] = append(warnings[msg], "app.json")
}
formations := sets.NewString()
for k := range appJSON.Formation {
formations.Insert(k)
}
var primaryFormation = "web"
if _, ok := appJSON.Formation["web"]; !ok || len(appJSON.Formation) == 1 {
for k := range appJSON.Formation {
primaryFormation = k
break
}
}
imageGen := app.NewImageRefGenerator()
buildPath := appJSON.Repository
if len(buildPath) == 0 && len(g.LocalPath) > 0 {
buildPath = g.LocalPath
}
if len(buildPath) == 0 {
return nil, fmt.Errorf("app.json did not contain a repository URL and no local path was specified")
}
repo, err := app.NewSourceRepository(buildPath, generate.StrategyDocker)
if err != nil {
return nil, err
}
var ports []string
var pipelines app.PipelineGroup
baseImage := g.BaseImage
if len(baseImage) == 0 {
baseImage = appJSON.Image
}
if len(baseImage) == 0 {
return nil, fmt.Errorf("Docker image required: provide an --image flag or 'image' key in app.json")
}
fakeDockerfile := heredoc.Docf(`
# Generated from app.json
FROM %s
`, baseImage)
dockerfilePath := filepath.Join(buildPath, "Dockerfile")
if df, err := app.NewDockerfileFromFile(dockerfilePath); err == nil {
repo.Info().Dockerfile = df
repo.Info().Path = dockerfilePath
ports = dockerfile.LastExposedPorts(df.AST())
}
// TODO: look for procfile for more info?
image, err := imageGen.FromNameAndPorts(baseImage, ports)
if err != nil {
return nil, err
}
image.AsImageStream = true
image.TagDirectly = true
image.ObjectName = name
image.Tag = "from"
pipeline, err := app.NewPipelineBuilder(name, nil, false).To(name).NewBuildPipeline(name, image, repo)
if err != nil {
return nil, err
}
// TODO: this should not be necessary
pipeline.Build.Source.Name = name
pipeline.Build.Source.DockerfileContents = fakeDockerfile
pipeline.Name = name
pipeline.Image.ObjectName = name
glog.V(4).Infof("created pipeline %+v", pipeline)
pipelines = append(pipelines, pipeline)
var errs []error
// create deployments for each formation
var group app.PipelineGroup
for _, component := range formations.List() {
componentName := fmt.Sprintf("%s-%s", name, component)
if formations.Len() == 1 {
componentName = name
}
formationName := component
formation := appJSON.Formation[component]
inputImage := pipelines[0].Image
inputImage.ContainerFn = func(c *kapi.Container) {
for _, s := range ports {
if port, err := strconv.Atoi(s); err == nil {
c.Ports = append(c.Ports, kapi.ContainerPort{ContainerPort: int32(port)})
}
}
if len(formation.Command) > 0 {
c.Args = []string{formation.Command}
} else {
msg := "no command defined, defaulting to command in the Procfile"
warnings[msg] = append(warnings[msg], formationName)
c.Args = []string{"/bin/sh", "-c", fmt.Sprintf("$(grep %s Procfile | cut -f 2 -d :)", formationName)}
}
c.Env = append(c.Env, envVars...)
c.Resources = resourcesForProfile(formation.Size)
}
pipeline, err := app.NewPipelineBuilder(componentName, nil, true).To(componentName).NewImagePipeline(componentName, inputImage)
if err != nil {
errs = append(errs, err)
break
}
if err := pipeline.NeedsDeployment(nil, nil, false); err != nil {
return nil, err
}
if cmd, ok := appJSON.Scripts["postdeploy"]; ok && primaryFormation == component {
pipeline.Deployment.PostHook = &app.DeploymentHook{Shell: cmd}
delete(appJSON.Scripts, "postdeploy")
}
group = append(group, pipeline)
}
if err := group.Reduce(); err != nil {
return nil, err
}
pipelines = append(pipelines, group...)
if len(errs) > 0 {
return nil, utilerrs.NewAggregate(errs)
}
acceptors := app.Acceptors{app.NewAcceptUnique(kapi.Scheme), app.AcceptNew}
objects := app.Objects{}
accept := app.NewAcceptFirst()
for _, p := range pipelines {
accepted, err := p.Objects(accept, acceptors)
if err != nil {
return nil, fmt.Errorf("can't setup %q: %v", p.From, err)
}
objects = append(objects, accepted...)
}
// create services for each object with a name based on alias.
var services []*kapi.Service
for _, obj := range objects {
switch t := obj.(type) {
case *deployapi.DeploymentConfig:
ports := app.UniqueContainerToServicePorts(app.AllContainerPorts(t.Spec.Template.Spec.Containers...))
if len(ports) == 0 {
continue
}
svc := app.GenerateService(t.ObjectMeta, t.Spec.Selector)
svc.Spec.Ports = ports
services = append(services, svc)
}
}
for _, svc := range services {
objects = append(objects, svc)
}
template.Objects = objects
// generate warnings
warnUnusableAppJSONElements("app.json", appJSON, warnings)
if len(warnings) > 0 {
allWarnings := sets.NewString()
for msg, services := range warnings {
allWarnings.Insert(fmt.Sprintf("%s: %s", strings.Join(services, ","), msg))
}
if template.Annotations == nil {
template.Annotations = make(map[string]string)
}
template.Annotations[app.GenerationWarningAnnotation] = fmt.Sprintf("not all app.json fields were honored:\n* %s", strings.Join(allWarnings.List(), "\n* "))
}
return template, nil
}