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package db
import (
"fmt"
"os"
"path/filepath"
"strings"
"github.com/blevesearch/bleve"
"github.com/blevesearch/bleve/mapping"
"github.com/ponzu-cms/ponzu/system/item"
)
// Search tracks all search indices to use throughout system
var Search map[string]bleve.Index
// Searchable ...
type Searchable interface {
SearchMapping() (*mapping.IndexMappingImpl, error)
}
func init() {
Search = make(map[string]bleve.Index)
}
// MapSearchIndex creates the mapping for a type and tracks the index to be used within
// the system for adding/deleting/checking data
func MapSearchIndex(typeName string) error {
// type assert for Searchable, get configuration (which can be overridden)
// by Ponzu user if defines own SearchMapping()
it, ok := item.Types[typeName]
if !ok {
return fmt.Errorf("Failed to MapIndex for %s, type doesn't exist", typeName)
}
s, ok := it().(Searchable)
if !ok {
return fmt.Errorf("Item type %s doesn't implement db.Searchable", typeName)
}
mapping, err := s.SearchMapping()
if err == item.ErrNoSearchMapping {
return nil
}
if err != nil {
return err
}
idxName := typeName + ".index"
var idx bleve.Index
// check if index exists, use it or create new one
pwd, err := os.Getwd()
if err != nil {
return err
}
searchPath := filepath.Join(pwd, "search")
err = os.MkdirAll(searchPath, os.ModeDir|os.ModePerm)
if err != nil {
return err
}
idxPath := filepath.Join(searchPath, idxName)
if _, err = os.Stat(idxPath); os.IsNotExist(err) {
idx, err = bleve.New(idxPath, mapping)
if err != nil {
return err
}
} else {
idx, err = bleve.Open(idxPath)
if err != nil {
return err
}
}
// add the type name to the index and track the index
Search[typeName] = idx
return nil
}
// UpdateSearchIndex sets data into a content type's search index at the given
// identifier
func UpdateSearchIndex(id string, data interface{}) error {
// check if there is a search index to work with
target := strings.Split(id, ":")
ns := target[0]
idx, ok := Search[ns]
if ok {
// add data to search index
return idx.Index(id, data)
}
return nil
}
// DeleteSearchIndex removes data from a content type's search index at the
// given identifier
func DeleteSearchIndex(id string) error {
// check if there is a search index to work with
target := strings.Split(id, ":")
ns := target[0]
idx, ok := Search[ns]
if ok {
// add data to search index
return idx.Delete(id)
}
return nil
}
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