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build_factory.go
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build_factory.go
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package factory
import (
"errors"
"github.com/concourse/atc"
"github.com/concourse/atc/dbng"
)
var ErrResourceNotFound = errors.New("resource not found")
//go:generate counterfeiter . BuildFactory
type BuildFactory interface {
Create(atc.JobConfig, atc.ResourceConfigs, atc.VersionedResourceTypes, []dbng.BuildInput) (atc.Plan, error)
}
type buildFactory struct {
PipelineID int
planFactory atc.PlanFactory
}
func NewBuildFactory(pipelineID int, planFactory atc.PlanFactory) BuildFactory {
return &buildFactory{
PipelineID: pipelineID,
planFactory: planFactory,
}
}
func (factory *buildFactory) Create(
job atc.JobConfig,
resources atc.ResourceConfigs,
resourceTypes atc.VersionedResourceTypes,
inputs []dbng.BuildInput,
) (atc.Plan, error) {
plan, err := factory.constructPlanFromJob(job, resources, resourceTypes, inputs)
if err != nil {
return atc.Plan{}, err
}
return factory.applyHooks(constructionParams{
plan: plan,
hooks: job.Hooks(),
resources: resources,
resourceTypes: resourceTypes,
inputs: inputs,
})
}
func (factory *buildFactory) constructPlanFromJob(
job atc.JobConfig,
resources atc.ResourceConfigs,
resourceTypes atc.VersionedResourceTypes,
inputs []dbng.BuildInput,
) (atc.Plan, error) {
planSequence := job.Plan
if len(planSequence) == 1 {
return factory.constructPlanFromConfig(
planSequence[0],
resources,
resourceTypes,
inputs,
)
}
return factory.do(planSequence, resources, resourceTypes, inputs)
}
func (factory *buildFactory) do(
planSequence atc.PlanSequence,
resources atc.ResourceConfigs,
resourceTypes atc.VersionedResourceTypes,
inputs []dbng.BuildInput,
) (atc.Plan, error) {
do := atc.DoPlan{}
var err error
for _, planConfig := range planSequence {
nextStep, err := factory.constructPlanFromConfig(
planConfig,
resources,
resourceTypes,
inputs,
)
if err != nil {
return atc.Plan{}, err
}
do = append(do, nextStep)
}
return factory.planFactory.NewPlan(do), err
}
func (factory *buildFactory) constructPlanFromConfig(
planConfig atc.PlanConfig,
resources atc.ResourceConfigs,
resourceTypes atc.VersionedResourceTypes,
inputs []dbng.BuildInput,
) (atc.Plan, error) {
var plan atc.Plan
var err error
if planConfig.Attempts == 0 {
plan, err = factory.constructUnhookedPlan(planConfig, resources, resourceTypes, inputs)
if err != nil {
return atc.Plan{}, err
}
} else {
retryStep := make(atc.RetryPlan, planConfig.Attempts)
for i := 0; i < planConfig.Attempts; i++ {
attempt, err := factory.constructUnhookedPlan(planConfig, resources, resourceTypes, inputs)
if err != nil {
return atc.Plan{}, err
}
retryStep[i] = attempt
}
plan = factory.planFactory.NewPlan(retryStep)
}
return factory.applyHooks(constructionParams{
plan: plan,
hooks: planConfig.Hooks(),
resources: resources,
resourceTypes: resourceTypes,
inputs: inputs,
})
}
func (factory *buildFactory) constructUnhookedPlan(
planConfig atc.PlanConfig,
resources atc.ResourceConfigs,
resourceTypes atc.VersionedResourceTypes,
inputs []dbng.BuildInput,
) (atc.Plan, error) {
var plan atc.Plan
var err error
switch {
case planConfig.Do != nil:
plan, err = factory.do(
*planConfig.Do,
resources,
resourceTypes,
inputs,
)
if err != nil {
return atc.Plan{}, err
}
case planConfig.Put != "":
logicalName := planConfig.Put
resourceName := planConfig.Resource
if resourceName == "" {
resourceName = logicalName
}
resource, found := resources.Lookup(resourceName)
if !found {
return atc.Plan{}, ErrResourceNotFound
}
putPlan := atc.PutPlan{
Type: resource.Type,
Name: logicalName,
Resource: resourceName,
Source: resource.Source,
Params: planConfig.Params,
Tags: planConfig.Tags,
VersionedResourceTypes: resourceTypes,
}
dependentGetPlan := atc.DependentGetPlan{
Type: resource.Type,
Name: logicalName,
Resource: resourceName,
Params: planConfig.GetParams,
Tags: planConfig.Tags,
Source: resource.Source,
VersionedResourceTypes: resourceTypes,
}
plan = factory.planFactory.NewPlan(atc.OnSuccessPlan{
Step: factory.planFactory.NewPlan(putPlan),
Next: factory.planFactory.NewPlan(dependentGetPlan),
})
case planConfig.Get != "":
resourceName := planConfig.Resource
if resourceName == "" {
resourceName = planConfig.Get
}
resource, found := resources.Lookup(resourceName)
if !found {
return atc.Plan{}, ErrResourceNotFound
}
name := planConfig.Get
var version dbng.ResourceVersion
for _, input := range inputs {
if input.Name == name {
version = input.Version
break
}
}
plan = factory.planFactory.NewPlan(atc.GetPlan{
Type: resource.Type,
Name: name,
Resource: resourceName,
Source: resource.Source,
Params: planConfig.Params,
Version: atc.Version(version),
Tags: planConfig.Tags,
VersionedResourceTypes: resourceTypes,
})
case planConfig.Task != "":
plan = factory.planFactory.NewPlan(atc.TaskPlan{
Name: planConfig.Task,
Privileged: planConfig.Privileged,
Config: planConfig.TaskConfig,
ConfigPath: planConfig.TaskConfigPath,
Tags: planConfig.Tags,
Params: planConfig.Params,
InputMapping: planConfig.InputMapping,
OutputMapping: planConfig.OutputMapping,
ImageArtifactName: planConfig.ImageArtifactName,
VersionedResourceTypes: resourceTypes,
})
case planConfig.Try != nil:
nextStep, err := factory.constructPlanFromConfig(
*planConfig.Try,
resources,
resourceTypes,
inputs,
)
if err != nil {
return atc.Plan{}, err
}
plan = factory.planFactory.NewPlan(atc.TryPlan{
Step: nextStep,
})
case planConfig.Aggregate != nil:
aggregate := atc.AggregatePlan{}
for _, planConfig := range *planConfig.Aggregate {
nextStep, err := factory.constructPlanFromConfig(
planConfig,
resources,
resourceTypes,
inputs,
)
if err != nil {
return atc.Plan{}, err
}
aggregate = append(aggregate, nextStep)
}
plan = factory.planFactory.NewPlan(aggregate)
}
if planConfig.Timeout != "" {
plan = factory.planFactory.NewPlan(atc.TimeoutPlan{
Duration: planConfig.Timeout,
Step: plan,
})
}
return plan, nil
}
type constructionParams struct {
plan atc.Plan
hooks atc.Hooks
resources atc.ResourceConfigs
resourceTypes atc.VersionedResourceTypes
inputs []dbng.BuildInput
}
func (factory *buildFactory) applyHooks(cp constructionParams) (atc.Plan, error) {
var err error
cp, err = factory.failureIfPresent(cp)
if err != nil {
return atc.Plan{}, err
}
cp, err = factory.successIfPresent(cp)
if err != nil {
return atc.Plan{}, err
}
cp, err = factory.ensureIfPresent(cp)
if err != nil {
return atc.Plan{}, err
}
return cp.plan, nil
}
func (factory *buildFactory) successIfPresent(cp constructionParams) (constructionParams, error) {
if cp.hooks.Success != nil {
nextPlan, err := factory.constructPlanFromConfig(
*cp.hooks.Success,
cp.resources,
cp.resourceTypes,
cp.inputs,
)
if err != nil {
return constructionParams{}, err
}
cp.plan = factory.planFactory.NewPlan(atc.OnSuccessPlan{
Step: cp.plan,
Next: nextPlan,
})
}
return cp, nil
}
func (factory *buildFactory) failureIfPresent(cp constructionParams) (constructionParams, error) {
if cp.hooks.Failure != nil {
nextPlan, err := factory.constructPlanFromConfig(
*cp.hooks.Failure,
cp.resources,
cp.resourceTypes,
cp.inputs,
)
if err != nil {
return constructionParams{}, err
}
cp.plan = factory.planFactory.NewPlan(atc.OnFailurePlan{
Step: cp.plan,
Next: nextPlan,
})
}
return cp, nil
}
func (factory *buildFactory) ensureIfPresent(cp constructionParams) (constructionParams, error) {
if cp.hooks.Ensure != nil {
nextPlan, err := factory.constructPlanFromConfig(
*cp.hooks.Ensure,
cp.resources,
cp.resourceTypes,
cp.inputs,
)
if err != nil {
return constructionParams{}, err
}
cp.plan = factory.planFactory.NewPlan(atc.EnsurePlan{
Step: cp.plan,
Next: nextPlan,
})
}
return cp, nil
}