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pipeline.go
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pipeline.go
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package pkg
import (
"github.com/analogj/capsulecd/pkg/config"
"github.com/analogj/capsulecd/pkg/engine"
"github.com/analogj/capsulecd/pkg/pipeline"
"github.com/analogj/capsulecd/pkg/scm"
"github.com/analogj/capsulecd/pkg/utils"
"errors"
"fmt"
"log"
"os"
"path"
"github.com/analogj/capsulecd/pkg/mgr"
)
type Pipeline struct {
Data *pipeline.Data
Config config.Interface
Scm scm.Interface
Engine engine.Interface
PackageManager mgr.Interface
}
func (p *Pipeline) Start(config config.Interface) error {
// Initialize Pipeline.
p.Config = config
p.Data = new(pipeline.Data)
defer p.Cleanup()
if err := p.PipelineInitStep(); err != nil {
return err
}
payload, err := p.ScmRetrievePayloadStep()
if err != nil {
return err
}
if p.Data.IsPullRequest {
if perr := p.ScmCheckoutPullRequestStep(payload); perr != nil {
return perr
}
} else {
if perr := p.ScmCheckoutPushPayloadStep(payload); perr != nil {
return perr
}
}
if err := p.StepExecNotify("parse_repo_config", p.ParseRepoConfig); err != nil {
return err
}
if err := p.StepExecNotify("mgr_init_step", p.MgrInitStep); err != nil {
return err
}
if err := p.StepExecNotify("validate_tools", p.ValidateTools); err != nil {
return err
}
if err := p.StepExecNotify("mgr_validate_tools", p.MgrValidateTools); err != nil {
return err
}
if err := p.StepExecNotify("assemble_step", p.AssembleStep); err != nil { //this step includes Mgr work.
return err
}
if err := p.StepExecNotify("mgr_dependencies_step", p.MgrDependenciesStep); err != nil {
return err
}
if err := p.StepExecNotify("compile_step", p.CompileStep); err != nil {
return err
}
if err := p.StepExecNotify("test_step", p.TestStep); err != nil {
return err
}
if err := p.StepExecNotify("package_step", p.PackageStep); err != nil { //this step includes Mgr work
return err
}
if err := p.StepExecNotify("mgr_dist_step", p.MgrDistStep); err != nil {
return err
}
if err := p.StepExecNotify("scm_publish_step", p.ScmPublishStep); err != nil {
return err
}
if err := p.StepExecNotify("scm_cleanup_step", p.ScmCleanupStep); err != nil {
return err
}
//if there was an error, it should not have gotten to this point. CheckErr panic's
p.Scm.Notify(
p.Data.GitHeadInfo.Sha,
"success",
"Pull-request was successfully merged, new release created.",
)
return nil
}
func (p *Pipeline) PipelineInitStep() error {
// PRE HOOK
if err := p.RunHook("pipeline_init_step.pre"); err != nil {
return err
}
if p.Config.IsSet("pipeline_init_step.override") {
log.Println("Cannot override the pipeline_init_step, ignoring.")
}
// start the source, and whatever work needs to be done there.
// MUST set options.GitParentPath
log.Println("pipeline_init_step")
scmImpl, serr := scm.Create(p.Config.GetString("scm"), p.Data, p.Config, nil)
if serr != nil {
return serr
}
p.Scm = scmImpl
//Generate a new instance of the engine
engineImpl, eerr := engine.Create(p.Config.GetString("package_type"), p.Data, p.Config, p.Scm)
if eerr != nil {
return eerr
}
p.Engine = engineImpl
// POST HOOK
if err := p.RunHook("pipeline_init_step.post"); err != nil {
return err
}
return nil
}
func (p *Pipeline) ScmRetrievePayloadStep() (*scm.Payload, error) {
// PRE HOOK
if err := p.RunHook("scm_retrieve_payload_step.pre"); err != nil {
return nil, err
}
if p.Config.IsSet("scm_retrieve_payload_step.override") {
log.Println("Cannot override the scm_retrieve_payload_step, ignoring.")
}
log.Println("scm_retrieve_payload_step")
payload, perr := p.Scm.RetrievePayload()
if perr != nil {
return nil, perr
}
// POST HOOK
if err := p.RunHook("scm_retrieve_payload_step.post"); err != nil {
return nil, err
}
return payload, nil
}
func (p *Pipeline) ScmCheckoutPullRequestStep(payload *scm.Payload) error {
// PRE HOOK
if err := p.RunHook("scm_checkout_pull_request_step.pre"); err != nil {
return err
}
if p.Config.IsSet("scm_checkout_pull_request_step.override") {
if err := p.RunHook("scm_checkout_pull_request_step.override"); err != nil {
return err
}
} else {
log.Println("scm_checkout_pull_request_step")
if err := p.Scm.CheckoutPullRequestPayload(payload); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("scm_checkout_pull_request_step.post"); err != nil {
return err
}
return nil
}
func (p *Pipeline) ScmCheckoutPushPayloadStep(payload *scm.Payload) error {
// PRE HOOK
if err := p.RunHook("scm_checkout_push_payload_step.pre"); err != nil {
return err
}
if p.Config.IsSet("scm_checkout_push_payload_step.override") {
if err := p.RunHook("scm_checkout_push_payload_step.override"); err != nil {
return err
}
} else {
log.Println("scm_checkout_push_payload_step")
if err := p.Scm.CheckoutPushPayload(payload); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("scm_checkout_push_payload_step.post"); err != nil {
return err
}
return nil
}
func (p *Pipeline) ParseRepoConfig() error {
log.Println("parse_repo_config")
// update the config with repo config file options
repoConfig := path.Join(p.Data.GitLocalPath, "capsule.yml")
if utils.FileExists(repoConfig) {
if err := p.Config.ReadConfig(repoConfig); err != nil {
return errors.New("An error occured while parsing repository capsule.yml file")
}
} else {
log.Println("No repo capsule.yml file found, using existing config.")
}
if p.Config.IsSet("scm_release_assets") {
//unmarshall config data.
parsedAssets := new([]pipeline.ScmReleaseAsset)
if err := p.Config.UnmarshalKey("scm_release_assets", parsedAssets); err != nil {
return err
}
//append the parsed Assets to the current ReleaseAssets storage (incase assets were defined in system yml)
p.Data.ReleaseAssets = append(p.Data.ReleaseAssets, (*parsedAssets)...)
}
return nil
}
func (p *Pipeline) MgrInitStep() error {
log.Println("mgr_init_step")
if p.Config.IsSet("mgr_type") {
manager, merr := mgr.Create(p.Config.GetString("mgr_type"), p.Data, p.Config, nil)
if merr != nil {
return merr
}
p.PackageManager = manager
} else {
manager, merr := mgr.Detect(p.Config.GetString("package_type"), p.Data, p.Config, nil)
if merr != nil {
return merr
}
p.PackageManager = manager
}
return nil
}
// validate that required executables are available for the following build/test/package/etc steps
func (p *Pipeline) ValidateTools() error {
log.Println("validate_tools")
return p.Engine.ValidateTools()
}
func (p *Pipeline) MgrValidateTools() error {
log.Println("mgr_validate_tools")
return p.PackageManager.MgrValidateTools()
}
// now that the payload has been processed we can begin by building the code.
// this may be creating missing files/default structure, compilation, version bumping, etc.
func (p *Pipeline) AssembleStep() error {
// PRE HOOK
if err := p.RunHook("assemble_step.pre"); err != nil {
return err
}
if p.Config.IsSet("assemble_step.override") {
log.Println("Cannot override the assemble_step, ignoring.")
}
log.Println("assemble_step")
if err := p.Engine.AssembleStep(); err != nil {
return err
}
log.Println("mgr_assemble_step")
if err := p.PackageManager.MgrAssembleStep(); err != nil {
return err
}
// POST HOOK
if err := p.RunHook("assemble_step.post"); err != nil {
return err
}
return nil
}
// this step should download dependencies
func (p *Pipeline) MgrDependenciesStep() error {
// PRE HOOK
if err := p.RunHook("mgr_dependencies_step.pre"); err != nil {
return err
}
if p.Config.IsSet("mgr_dependencies_step.override") {
if err := p.RunHook("mgr_dependencies_step.override"); err != nil {
return err
}
} else {
log.Println("mgr_dependencies_step")
if err := p.PackageManager.MgrDependenciesStep(p.Engine.GetCurrentMetadata(), p.Engine.GetNextMetadata()); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("mgr_dependencies_step.post"); err != nil {
return err
}
return nil
}
// this step should compile source
func (p *Pipeline) CompileStep() error {
if p.Config.GetBool("engine_disable_compile") {
log.Println("skipping compile_step.pre, compile_step, compile_step.post")
return nil
}
// PRE HOOK
if err := p.RunHook("compile_step.pre"); err != nil {
return err
}
if p.Config.IsSet("compile_step.override") {
if err := p.RunHook("compile_step.override"); err != nil {
return err
}
} else {
log.Println("compile_step")
if err := p.Engine.CompileStep(); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("compile_step.post"); err != nil {
return err
}
return nil
}
// run the package test runner(s) (eg. npm test, rake test, kitchen test) and linters/formatters
func (p *Pipeline) TestStep() error {
if p.Config.GetBool("engine_disable_test") {
log.Println("skipping test_step.pre, test_step, test_step.post")
return nil
}
// PRE HOOK
if err := p.RunHook("test_step.pre"); err != nil {
return err
}
if p.Config.IsSet("test_step.override") {
if err := p.RunHook("test_step.override"); err != nil {
return err
}
} else {
log.Println("test_step")
if err := p.Engine.TestStep(); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("test_step.post"); err != nil {
return err
}
return nil
}
// this step should commit any local changes and create a git tag. It should also generate the releaser artifacts. Nothing should be pushed to remote repository
func (p *Pipeline) PackageStep() error {
// PRE HOOK
if err := p.RunHook("package_step.pre"); err != nil {
return err
}
if p.Config.IsSet("package_step.override") {
log.Println("Cannot override the package_step, ignoring.")
}
log.Println("mgr_package_step")
if err := p.PackageManager.MgrPackageStep(p.Engine.GetCurrentMetadata(), p.Engine.GetNextMetadata()); err != nil {
return err
}
log.Println("package_step")
if err := p.Engine.PackageStep(); err != nil {
return err
}
// POST HOOK
if err := p.RunHook("package_step.post"); err != nil {
return err
}
return nil
}
// this step should push the release to the package repository (ie. npm, chef supermarket, rubygems)
func (p *Pipeline) MgrDistStep() error {
if p.Config.GetBool("mgr_disable_dist") {
log.Println("skipping mgr_dist_step.pre, mgr_dist_step, mgr_dist_step.post")
return nil
}
// PRE HOOK
if err := p.RunHook("mgr_dist_step.pre"); err != nil {
return err
}
if p.Config.IsSet("mgr_dist_step.override") {
if err := p.RunHook("mgr_dist_step.override"); err != nil {
return err
}
} else {
log.Println("mgr_dist_step")
if err := p.PackageManager.MgrDistStep(p.Engine.GetCurrentMetadata(), p.Engine.GetNextMetadata()); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("mgr_dist_step.post"); err != nil {
return err
}
return nil
}
func (p *Pipeline) ScmPublishStep() error {
if p.Config.GetBool("scm_disable_publish") {
log.Println("skipping scm_publish_step.pre, scm_publish_step, scm_publish_step.post")
return nil
}
// PRE HOOK
if err := p.RunHook("scm_publish_step.pre"); err != nil {
return err
}
if p.Config.IsSet("scm_publish_step.override") {
if err := p.RunHook("scm_publish_step.override"); err != nil {
return err
}
} else {
log.Println("scm_publish_step")
if err := p.Scm.Publish(); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("scm_publish_step.post"); err != nil {
return err
}
return nil
}
func (p *Pipeline) ScmCleanupStep() error {
if p.Config.GetBool("scm_disable_cleanup") {
log.Println("skipping scm_cleanup_step.pre, scm_cleanup_step, scm_cleanup_step.post")
return nil
}
// PRE HOOK
if err := p.RunHook("scm_cleanup_step.pre"); err != nil {
return err
}
if p.Config.IsSet("scm_cleanup_step.override") {
if err := p.RunHook("scm_cleanup_step.override"); err != nil {
return err
}
} else {
log.Println("scm_cleanup_step")
if err := p.Scm.Cleanup(); err != nil {
return err
}
}
// POST HOOK
if err := p.RunHook("scm_cleanup_step.post"); err != nil {
return err
}
return nil
}
// Helpers
func (p *Pipeline) StepExecNotify(step string, callback func() error) error {
p.Scm.Notify(p.Data.GitHeadInfo.Sha, "pending", fmt.Sprintf("Started '%s' step. Pull request will be merged automatically when complete.", step))
if cerr := callback(); cerr != nil {
p.Scm.Notify(p.Data.GitHeadInfo.Sha, "failure", fmt.Sprintf("Error: '%s'", cerr))
return cerr
}
return nil
}
func (p *Pipeline) Cleanup() {
if p.Config.GetBool("engine_disable_cleanup") {
log.Println("Skipping Cleanup...")
log.Printf("Temporary files at the following locaton should be cleaned manually: '%s'", p.Data.GitParentPath)
} else if p.Data != nil && p.Data.GitParentPath != "" {
log.Println("Running Cleanup...")
os.RemoveAll(p.Data.GitParentPath)
p.Data.GitParentPath = ""
}
}
func (p *Pipeline) RunHook(hookKey string) error {
log.Println(hookKey)
hookSteps := p.Config.GetStringSlice(hookKey)
if hookSteps == nil {
return nil
}
for i, cmd := range hookSteps {
cmdPopulated, aerr := utils.PopulateTemplate(cmd, p.Data)
if aerr != nil {
return aerr
}
if err := utils.BashCmdExec(cmdPopulated, p.Data.GitLocalPath, nil, fmt.Sprintf("%s.%d", hookKey, i)); err != nil {
return err
}
}
return nil
}