/
resource-migration-service.go
261 lines (213 loc) · 9.29 KB
/
resource-migration-service.go
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package impl
import (
"context"
"github.com/apibrew/apibrew/pkg/errors"
"github.com/apibrew/apibrew/pkg/model"
"github.com/apibrew/apibrew/pkg/resources"
"github.com/apibrew/apibrew/pkg/resources/mapping"
"github.com/apibrew/apibrew/pkg/service"
"github.com/apibrew/apibrew/pkg/util"
log "github.com/sirupsen/logrus"
"google.golang.org/protobuf/proto"
reflect "reflect"
)
type resourceMigrationService struct {
}
func (r *resourceMigrationService) PreparePlan(ctx context.Context, existingResource *model.Resource, resource *model.Resource) (*model.ResourceMigrationPlan, error) {
if existingResource == nil && resource == nil {
return nil, errors.LogicalError.WithDetails("Both existing resource and resource cannot be nil at the same time")
}
if resource != nil && existingResource != nil {
resource.AuditData = existingResource.AuditData
resource.Version = existingResource.Version
}
var plan = &model.ResourceMigrationPlan{
ExistingResource: existingResource,
CurrentResource: resource,
Steps: nil,
}
// create new resource case
if existingResource == nil {
plan.ExistingResource = &model.Resource{} // for safety
plan.Steps = r.preparePlanStepsForNewResource(resource)
return plan, nil
}
// delete existing resource case
if resource == nil {
plan.Steps = r.preparePlanStepsForDeleteResource()
plan.CurrentResource = existingResource // for consistency
return plan, nil
}
// check resource fields updated
plan.Steps = append(plan.Steps, r.preparePlanStepsForUpdateResource(resource, existingResource)...)
// check properties
_ = util.ArrayDiffer(existingResource.Properties,
resource.Properties,
util.IsSameIdentifiedResourceProperty,
util.IsSameResourceProperty,
func(prop *model.ResourceProperty) error { // new
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_CreateProperty{CreateProperty: &model.ResourceMigrationCreateProperty{
Property: prop.Name,
}}})
return nil
}, func(e, u *model.ResourceProperty) error { // update
plan.Steps = append(plan.Steps, r.preparePlanStepsForUpdateResourceProperty(resource, existingResource, u, e, "")...)
return nil
}, func(prop *model.ResourceProperty) error { // delete
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_DeleteProperty{DeleteProperty: &model.ResourceMigrationDeleteProperty{
ExistingProperty: prop.Name,
}}})
return nil
})
// types
_ = util.ArrayDiffer(existingResource.Types,
resource.Types,
func(a, b *model.ResourceSubType) bool {
return a.Name == b.Name
},
func(a, b *model.ResourceSubType) bool {
return false // to check properties always
},
func(subType *model.ResourceSubType) error { // new
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_CreateSubType{CreateSubType: &model.ResourceMigrationCreateSubType{
Name: subType.Name,
}}})
return nil
}, func(e, u *model.ResourceSubType) error { // update
// check properties
_ = util.ArrayDiffer(e.Properties,
u.Properties,
util.IsSameIdentifiedResourceProperty,
util.IsSameResourceProperty,
func(prop *model.ResourceProperty) error { // new
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_CreateProperty{CreateProperty: &model.ResourceMigrationCreateProperty{
Property: prop.Name,
SubType: u.Name,
}}})
return nil
}, func(ep, up *model.ResourceProperty) error { // update
plan.Steps = append(plan.Steps, r.preparePlanStepsForUpdateResourceProperty(resource, existingResource, up, ep, u.Name)...)
return nil
}, func(prop *model.ResourceProperty) error { // delete
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_DeleteProperty{DeleteProperty: &model.ResourceMigrationDeleteProperty{
ExistingProperty: prop.Name,
SubType: u.Name,
}}})
return nil
})
return nil
}, func(subType *model.ResourceSubType) error { // delete
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_DeleteSubType{DeleteSubType: &model.ResourceMigrationDeleteSubType{
Name: subType.Name,
}}})
return nil
})
// check indexes
_ = util.ArrayDiffer(existingResource.Indexes,
resource.Indexes,
util.IsSameIdentifiedResourceIndex,
util.IsSameResourceIndex,
func(prop *model.ResourceIndex) error { // new
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_CreateIndex{CreateIndex: &model.ResourceMigrationCreateIndex{
Index: uint32(util.GetArrayIndex(resource.Indexes, prop, util.IsSameResourceIndex)),
}}})
return nil
}, func(e, u *model.ResourceIndex) error { // update
log.Fatal("Not implemented, not possible")
return nil
}, func(prop *model.ResourceIndex) error { // delete
plan.Steps = append(plan.Steps, &model.ResourceMigrationStep{Kind: &model.ResourceMigrationStep_DeleteIndex{DeleteIndex: &model.ResourceMigrationDeleteIndex{
ExistingIndex: uint32(util.GetArrayIndex(existingResource.Indexes, prop, util.IsSameResourceIndex)),
}}})
return nil
})
return plan, nil
}
func (r *resourceMigrationService) preparePlanStepsForNewResource(resource *model.Resource) []*model.ResourceMigrationStep {
var steps []*model.ResourceMigrationStep
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_CreateResource{CreateResource: &model.ResourceMigrationCreateResource{}},
})
for _, prop := range resource.Properties {
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_CreateProperty{CreateProperty: &model.ResourceMigrationCreateProperty{
Property: prop.Name,
}},
})
}
for index := range resource.Indexes {
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_CreateIndex{CreateIndex: &model.ResourceMigrationCreateIndex{
Index: uint32(index),
}},
})
}
return steps
}
func (r *resourceMigrationService) preparePlanStepsForDeleteResource() []*model.ResourceMigrationStep {
var steps []*model.ResourceMigrationStep
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_DeleteResource{DeleteResource: &model.ResourceMigrationDeleteResource{}},
})
return steps
}
func (r *resourceMigrationService) preparePlanStepsForUpdateResource(resource, existingResource *model.Resource) []*model.ResourceMigrationStep {
var steps []*model.ResourceMigrationStep
resourceRecord := mapping.ResourceToRecord(resource)
existingResourceRecord := mapping.ResourceToRecord(existingResource)
var changedFields []string
for _, prop := range resources.ResourceResource.Properties {
if prop.Name == "properties" {
continue
}
if !proto.Equal(resourceRecord.Properties[prop.Name], existingResourceRecord.Properties[prop.Name]) {
changedFields = append(changedFields, prop.Name)
}
}
if len(changedFields) > 0 {
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_UpdateResource{UpdateResource: &model.ResourceMigrationUpdateResource{
ChangedFields: changedFields,
}},
})
}
return steps
}
func (r *resourceMigrationService) preparePlanStepsForUpdateResourceProperty(resource, existingResource *model.Resource, resourceProperty, existingResourceProperty *model.ResourceProperty, subType string) []*model.ResourceMigrationStep {
var steps []*model.ResourceMigrationStep
var changed bool
changed = changed || resourceProperty.Type != existingResourceProperty.Type
changed = changed || resourceProperty.Required != existingResourceProperty.Required
changed = changed || resourceProperty.Unique != existingResourceProperty.Unique
changed = changed || resourceProperty.DefaultValue != existingResourceProperty.DefaultValue
changed = changed || resourceProperty.Virtual != existingResourceProperty.Virtual
changed = changed || resourceProperty.Primary != existingResourceProperty.Primary
changed = changed || reflect.DeepEqual(resourceProperty.Annotations, existingResourceProperty.Annotations)
if resourceProperty.Type != model.ResourceProperty_REFERENCE {
if (resourceProperty.Reference != nil) != (existingResourceProperty.Reference != nil) {
changed = true
} else if (resourceProperty.Reference != nil) && (existingResourceProperty.Reference != nil) {
changed = changed || resourceProperty.Reference.Resource != existingResourceProperty.Reference.Resource
changed = changed || resourceProperty.Reference.Namespace != existingResourceProperty.Reference.Namespace
}
}
if resourceProperty.Type == model.ResourceProperty_STRING {
changed = changed || resourceProperty.Length != existingResourceProperty.Length
}
if resourceProperty.Type == model.ResourceProperty_STRUCT {
changed = changed || resourceProperty.TypeRef != existingResourceProperty.TypeRef
}
if changed {
steps = append(steps, &model.ResourceMigrationStep{
Kind: &model.ResourceMigrationStep_UpdateProperty{UpdateProperty: &model.ResourceMigrationUpdateProperty{
ExistingProperty: existingResourceProperty.Name,
Property: resourceProperty.Name,
SubType: subType,
}},
})
}
return steps
}
func NewResourceMigrationService() service.ResourceMigrationService {
return &resourceMigrationService{}
}