/
packager.go
177 lines (149 loc) · 4.89 KB
/
packager.go
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//
// Copyright 2019 EPAM Systems
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package packager
import (
"encoding/json"
"fmt"
"github.com/go-logr/logr"
"github.com/legion-platform/legion/legion/operator/pkg/apis/legion/v1alpha1"
"github.com/legion-platform/legion/legion/operator/pkg/apis/packaging"
packager_conf "github.com/legion-platform/legion/legion/operator/pkg/config/packager"
"github.com/legion-platform/legion/legion/operator/pkg/legion"
"github.com/legion-platform/legion/legion/operator/pkg/rclone"
connection_repository "github.com/legion-platform/legion/legion/operator/pkg/repository/connection"
packaging_repository "github.com/legion-platform/legion/legion/operator/pkg/repository/packaging"
"github.com/legion-platform/legion/legion/operator/pkg/utils"
"github.com/spf13/viper"
"io/ioutil"
"os"
"path"
logf "sigs.k8s.io/controller-runtime/pkg/runtime/log"
)
const (
resultFileName = "result.json"
modelPackagingFile = "mp.json"
)
type Packager struct {
packRepo packaging_repository.Repository
connRepo connection_repository.Repository
log logr.Logger
modelPackagingID string
}
func NewPackager(
packRepo packaging_repository.Repository,
connRepo connection_repository.Repository,
modelPackagingID string,
) *Packager {
return &Packager{
packRepo: packRepo,
connRepo: connRepo,
log: logf.Log.WithName("packager").WithValues(
legion.ModelPackagingIDLogPrefix, modelPackagingID,
),
modelPackagingID: modelPackagingID,
}
}
// This function prepares a packaging environment. To do this, it performs the following steps:
// 1) It extracts the packaging entity from repository storage, for example, from the EDI server.
// 2) It downloads a trained artifact from object storage.
// 4) Finally, it saves the packaging entity to allow a packager to use it.
func (p *Packager) SetupPackager() (err error) {
k8sPackaging, err := p.getPackaging()
if err != nil {
return err
}
if err := p.downloadData(k8sPackaging); err != nil {
p.log.Error(err, "Downloading packaging data failed")
return err
}
mtBytes, err := json.Marshal(k8sPackaging)
if err != nil {
return err
}
return ioutil.WriteFile(modelPackagingFile, mtBytes, 0644)
}
// This function saves a packaging result. To do this, it performs the following steps:
// 1) It extracts the packaging entity from repository storage, for example, from the EDI server.
// 2) It reads the packaging result file from workspace.
// 4) Finally, it saves the packaging results.
func (p *Packager) SaveResult() error {
k8sPackaging, err := p.getPackaging()
if err != nil {
return err
}
resultFile, err := os.Open(resultFileName)
if err != nil {
p.log.Error(err, "Open result file")
return err
}
defer resultFile.Close()
byteResult, err := ioutil.ReadAll(resultFile)
if err != nil {
p.log.Error(err, "Read from result file")
return err
}
var result map[string]string
if err := json.Unmarshal(byteResult, &result); err != nil {
p.log.Error(err, "Unmarshal result")
return err
}
packResult := make([]v1alpha1.ModelPackagingResult, 0, len(result))
for name, value := range result {
packResult = append(packResult, v1alpha1.ModelPackagingResult{
Name: name,
Value: value,
})
}
return p.packRepo.SaveModelPackagingResult(k8sPackaging.ModelPackaging.ID, packResult)
}
func (p *Packager) downloadData(packaging *packaging.K8sPackager) (err error) {
fmt.Println(packaging)
storage, err := rclone.NewObjectStorage(&packaging.ModelHolder.Spec)
if err != nil {
p.log.Error(err, "repository creation")
return err
}
file, err := os.Create(packaging.TrainingZipName)
if err != nil {
p.log.Error(err, "zip creation")
return err
}
defer func() {
closeErr := file.Close()
if closeErr != nil {
p.log.Error(err, "Error during closing of the file")
}
if err == nil {
err = closeErr
}
}()
if err := storage.Download(
packaging.TrainingZipName,
path.Join(storage.RemoteConfig.Path, packaging.TrainingZipName),
); err != nil {
p.log.Error(err, "download training zip")
return err
}
if err = os.Mkdir(viper.GetString(packager_conf.OutputPackagingDir), 0777); err != nil {
p.log.Error(err, "output dir creation")
return err
}
if err := utils.Unzip(packaging.TrainingZipName, viper.GetString(packager_conf.OutputPackagingDir)); err != nil {
p.log.Error(err, "unzip training data")
return err
}
return nil
}