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index.go
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index.go
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package bleve
import (
"strconv"
"github.com/blevesearch/bleve"
"github.com/blevesearch/bleve/document"
//Registers the bleve keyword analyzer
_ "github.com/blevesearch/bleve/analysis/analyzer/keyword"
iindex "github.com/ironman-project/ironman/pkg/template/index"
"github.com/ironman-project/ironman/pkg/template/model"
"github.com/pkg/errors"
uuid "github.com/satori/go.uuid"
)
const (
idKey = "id"
)
var _ iindex.Index = (*bleeveIndex)(nil)
type bleeveIndex struct {
index bleve.Index
}
//New creates a new instance of a bleeve index
func New(options ...Option) iindex.Index {
r := &bleeveIndex{}
for _, option := range options {
option(r)
}
return r
}
//BuildIndex builds a nex index based on a path
func BuildIndex(path string) (bleve.Index, error) {
indexMapping := bleve.NewIndexMapping()
templateIDMapping := bleve.NewTextFieldMapping()
templateIDMapping.Analyzer = "keyword"
templateDocMapping := bleve.NewDocumentMapping()
generatorsMapping := bleve.NewDocumentMapping()
templateDocMapping.AddFieldMappingsAt(idKey, templateIDMapping)
templateDocMapping.AddSubDocumentMapping("model.generator", generatorsMapping)
indexMapping.AddDocumentMapping("model.template", templateDocMapping)
index, err := bleve.New(path, indexMapping)
if err != nil {
return nil, err
}
return index, nil
}
func (i *bleeveIndex) Index(template *model.Template) (string, error) {
id := uuid.NewV4()
template.IID = id.String()
err := i.index.Index(id.String(), template)
if err != nil {
return "", errors.Wrapf(err, "failed to index template %s", template.ID)
}
return id.String(), nil
}
func (i *bleeveIndex) Update(template *model.Template) error {
query := bleve.NewTermQuery(template.ID)
query.SetField(idKey)
search := bleve.NewSearchRequest(query)
searchResults, err := i.index.Search(search)
if err != nil {
return errors.Wrapf(err, "Search for template failed id: %s")
}
if searchResults.Total != 1 {
return errors.Errorf("Could not update template. %s not found. Hits: %d", template.ID, searchResults.Total)
}
id := searchResults.Hits[0].ID
template.IID = id
err = i.index.Index(id, template)
if err != nil {
return errors.Errorf("failed to update template %s", template.ID)
}
return nil
}
func (i *bleeveIndex) FindTemplateByID(ID string) (*model.Template, error) {
query := bleve.NewTermQuery(ID)
query.SetField(idKey)
search := bleve.NewSearchRequest(query)
searchResults, err := i.index.Search(search)
if err != nil {
return nil, errors.Wrapf(err, "Search for template failed id: %s")
}
if searchResults.Total != 1 {
return nil, nil
}
match := searchResults.Hits[0]
doc, err := i.index.Document(match.ID)
if err != nil {
return nil, errors.Wrapf(err, "failed to get template document %s", ID)
}
t, err := deserialize(doc)
if err != nil {
return nil, err
}
return t, nil
}
func deserialize(doc *document.Document) (*model.Template, error) {
template := &model.Template{}
var generators []*model.Generator
var mantainers []*model.Mantainer
var sources []string
for _, field := range doc.Fields {
value := string(field.Value())
switch field.Name() {
case "iid":
template.IID = value
case "sourceType":
template.SourceType = model.SourceType(value)
case "id":
template.ID = value
case "version":
template.Version = value
case "name":
template.Name = value
case "description":
template.Description = value
case "directoryName":
template.DirectoryName = value
case "home":
template.HomeURL = value
case "sources":
sources = append(sources, value)
case "appVersion":
template.AppVersion = value
case "deprecated":
template.Deprecated, _ = strconv.ParseBool(value)
case "generators.id":
generators = append(generators, &model.Generator{
FileTypeOptions: model.FileTypeOptions{},
})
generators[field.ArrayPositions()[0]].ID = value
case "generators.type":
generators[field.ArrayPositions()[0]].TType = model.GeneratorType(value)
case "generators.name":
generators[field.ArrayPositions()[0]].Name = value
case "generators.description":
generators[field.ArrayPositions()[0]].Description = value
case "generators.directoryName":
generators[field.ArrayPositions()[0]].DirectoryName = value
case "generators.fileTypeOptions.defaultTemplateFile":
generators[field.ArrayPositions()[0]].FileTypeOptions.DefaultTemplateFile = value
case "generators.fileTypeOptions.fileGenerationRelativePath":
generators[field.ArrayPositions()[0]].FileTypeOptions.FileGenerationRelativePath = value
case "mantainers.name":
mantainers = append(mantainers, &model.Mantainer{})
mantainers[field.ArrayPositions()[0]].Name = value
case "mantainers.email":
mantainers[field.ArrayPositions()[0]].Email = value
case "mantainers.url":
mantainers[field.ArrayPositions()[0]].URL = value
default:
return nil, errors.Errorf("Could not deserialize template from bleve document. Field %s must be explicitly processed", field.Name())
}
}
template.Generators = generators
template.Sources = sources
template.Mantainers = mantainers
return template, nil
}
func (i *bleeveIndex) Delete(ID string) (bool, error) {
t, err := i.FindTemplateByID(ID)
if err != nil {
return false, errors.Wrapf(err, "failed to delete template %s", ID)
}
//It doesn't exists
if t == nil {
return false, nil
}
err = i.index.Delete(t.IID)
if err != nil {
return false, errors.Wrapf(err, "failed to delete template with id %s", ID)
}
return true, nil
}
func (i *bleeveIndex) List() ([]*model.Template, error) {
var results []*model.Template
query := bleve.NewMatchAllQuery()
search := bleve.NewSearchRequest(query)
searchResults, err := i.index.Search(search)
if err != nil {
return nil, errors.Wrap(err, "failed to list all the available templates")
}
if searchResults.Total > 0 {
for _, result := range searchResults.Hits {
doc, err := i.index.Document(result.ID)
if err != nil {
return nil, errors.Wrapf(err, "failed to retrieve template from document IID:%s", doc.ID)
}
templ, err := deserialize(doc)
if err != nil {
return nil, errors.Wrapf(err, "failed to deserialize template from document IID:%s", doc.ID)
}
results = append(results, templ)
}
}
return results, nil
}
func (i *bleeveIndex) Exists(ID string) (bool, error) {
templ, err := i.FindTemplateByID(ID)
if err != nil {
return false, errors.Wrapf(err, "failed to verify if template exists %s", ID)
}
if templ != nil {
return true, nil
}
return false, nil
}