/
getModel.go
201 lines (162 loc) · 6.09 KB
/
getModel.go
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// Copyright (c) 2016 OpenM++
// This code is licensed under the MIT license (see LICENSE.txt for details)
package main
import (
"github.com/openmpp/go/ompp/db"
"github.com/openmpp/go/ompp/omppLog"
"golang.org/x/text/language"
)
// ModelDicByDigest return model_dic db row by model digest.
func (mc *ModelCatalog) ModelDicByDigest(digest string) (db.ModelDicRow, bool) {
// if model digest is empty then return empty results
if digest == "" {
omppLog.Log("Warning: invalid (empty) model digest")
return db.ModelDicRow{}, false
}
// find model index by digest
mc.theLock.Lock()
defer mc.theLock.Unlock()
idx, ok := mc.indexByDigest(digest)
if !ok {
return db.ModelDicRow{}, false // model not found, empty result
}
return mc.modelLst[idx].meta.Model, true
}
// ModelDicByDigestOrName return model_dic db row by model digest or name.
func (mc *ModelCatalog) ModelDicByDigestOrName(dn string) (db.ModelDicRow, bool) {
// if model digest is empty then return empty results
if dn == "" {
omppLog.Log("Warning: invalid (empty) model digest and name")
return db.ModelDicRow{}, false
}
// find model index by digest
mc.theLock.Lock()
defer mc.theLock.Unlock()
idx, ok := mc.indexByDigestOrName(dn)
if !ok {
return db.ModelDicRow{}, false // model not found, empty result
}
return mc.modelLst[idx].meta.Model, true
}
// find model metadata by digest or name
func (mc *ModelCatalog) ModelMetaByDigestOrName(dn string) (*db.ModelMeta, error) {
// if model digest-or-name is empty then return empty results
if dn == "" {
omppLog.Log("Warning: invalid (empty) model digest and name")
return &db.ModelMeta{}, nil
}
// lock model catalog and return copy of model metadata
mc.theLock.Lock()
defer mc.theLock.Unlock()
idx, ok := mc.indexByDigestOrName(dn)
if !ok {
return &db.ModelMeta{}, nil // return empty result: model not found or error
}
return mc.modelLst[idx].meta, nil
}
// ModelTextByDigest return model_dic_txt db row by model digest and preferred language tags.
// It can be in preferred language, default model language or empty if no model model_dic_txt rows exist.
func (mc *ModelCatalog) ModelTextByDigest(digest string, preferredLang []language.Tag) (*ModelDicDescrNote, bool) {
// if model digest is empty then return empty results
if digest == "" {
omppLog.Log("Warning: invalid (empty) model digest and name")
return &ModelDicDescrNote{}, false
}
// get model_dic row
mdRow, ok := mc.ModelDicByDigest(digest)
if !ok {
omppLog.Log("Warning: model digest not found: ", digest)
return &ModelDicDescrNote{}, false // return empty result: model not found or error
}
// get model_dic_txt rows from catalog: it is loaded at catalog initialization
_, txt := mc.modelTextMeta(digest)
if txt == nil {
return &ModelDicDescrNote{}, false // return empty result: model not found or error
}
// match preferred languages and model languages
lc := mc.languageTagMatch(digest, preferredLang)
lcd, _, _ := mc.modelLangs(digest)
if lc == "" && lcd == "" {
omppLog.Log("Error: invalid (empty) model default language: ", digest)
return &ModelDicDescrNote{}, false
}
// if model_dic_txt rows not empty then find row by matched language or by default language
t := ModelDicDescrNote{Model: mdRow}
if len(txt.ModelTxt) > 0 {
var nd, i int
for ; i < len(txt.ModelTxt); i++ {
if txt.ModelTxt[i].LangCode == lc {
break // language match
}
if txt.ModelTxt[i].LangCode == lcd {
nd = i // index of default language
}
}
if i >= len(txt.ModelTxt) {
i = nd // use default language or zero index row
}
t.DescrNote = db.DescrNote{
LangCode: txt.ModelTxt[i].LangCode,
Descr: txt.ModelTxt[i].Descr,
Note: txt.ModelTxt[i].Note}
}
return &t, true
}
// ModelMetaAllTextByDigest return language-specific model metadata by model digest or name in all languages.
func (mc *ModelCatalog) ModelMetaAllTextByDigestOrName(dn string) (*db.ModelTxtMeta, error) {
// if model digest-or-name is empty then return empty results
if dn == "" {
omppLog.Log("Warning: invalid (empty) model digest and name")
return &db.ModelTxtMeta{}, nil
}
// if language-specific model metadata not loaded then read it from database
if ok := mc.loadModelText(dn); !ok {
return &db.ModelTxtMeta{}, nil // return empty result: model not found or error
}
// lock model catalog and return copy of model metadata
mc.theLock.Lock()
defer mc.theLock.Unlock()
idx, ok := mc.indexByDigestOrName(dn)
if !ok {
return &db.ModelTxtMeta{}, nil // return empty result: model not found or error
}
return mc.modelLst[idx].txtMeta, nil
}
// loadModelText reads language-specific model metadata from db by digest or name.
// If metadata already loaded then skip db reading and return success.
func (mc *ModelCatalog) loadModelText(dn string) bool {
// if model digest-or-name is empty then return empty results
if dn == "" {
omppLog.Log("Warning: invalid (empty) model digest and name")
return false
}
// get model_dic row
mdRow, ok := mc.ModelDicByDigestOrName(dn)
if !ok {
omppLog.Log("Warning: model digest or name not found: ", dn)
return false // model not found or error
}
// check if model text metadata already fully loaded from database
if isFull, _ := mc.modelTextMeta(mdRow.Digest); isFull {
return true
}
// else: no model text in catalog: read from database and update catalog
// get database connection
_, dbConn, ok := mc.modelMeta(mdRow.Digest)
if !ok {
omppLog.Log("Warning: model digest or name not found: ", dn)
return false // model not found or error
}
// read model text metadata from database and update catalog
txt, err := db.GetModelText(dbConn, mdRow.ModelId, "", true)
if err != nil {
omppLog.Log("Error at get model text metadata: ", dn, ": ", err.Error())
return false
}
ok = mc.setModelTextMeta(mdRow.Digest, true, txt)
if !ok {
omppLog.Log("Error: model digest not found: ", mdRow.Digest)
return false // model not found or error
}
return true
}