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extract_resources.go
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extract_resources.go
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/*
* Copyright (c) 2019 WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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 image
import (
"fmt"
"os"
"path/filepath"
"time"
"github.com/cellery-io/sdk/components/cli/cli"
"github.com/cellery-io/sdk/components/cli/pkg/image"
"github.com/cellery-io/sdk/components/cli/pkg/util"
)
// RunExtractResources extracts the cell image zip file and copies the resources folder to the provided path
func RunExtractResources(cli cli.Cli, cellImage string, outputPath string) error {
parsedCellImage, err := image.ParseImageTag(cellImage)
if err != nil {
return fmt.Errorf("error occurred while parsing cell image, %v", err)
}
repoLocation := filepath.Join(cli.FileSystem().Repository(), parsedCellImage.Organization,
parsedCellImage.ImageName, parsedCellImage.ImageVersion)
imageLocation := filepath.Join(repoLocation, parsedCellImage.ImageName+cellImageExt)
// Checking if the image is present in the local repo
isImagePresent, _ := util.FileExists(imageLocation)
if !isImagePresent {
return fmt.Errorf(fmt.Sprintf("failed to extract resources, image %s not found", cellImage))
}
// Create temp directory
currentTIme := time.Now()
timestamp := currentTIme.Format("27065102350415")
tempPath := filepath.Join(cli.FileSystem().TempDir(), timestamp)
err = util.CreateDir(tempPath)
if err != nil {
return fmt.Errorf("error while extracting resources from cell image, %v", err)
}
defer func() error {
if err = os.RemoveAll(tempPath); err != nil {
return fmt.Errorf("error while cleaning up, %v", err)
}
return nil
}()
if err = util.Unzip(imageLocation, tempPath); err != nil {
return fmt.Errorf("error extracting zip file, %v", err)
}
// Copying the image resources to the provided output directory
resourcesDir, err := filepath.Abs(filepath.Join(tempPath, artifacts, "resources"))
if err != nil {
return fmt.Errorf("error occurred while extracting the image resources, %v", err)
}
resourcesExists, _ := util.FileExists(resourcesDir)
if resourcesExists {
if outputPath == "" {
outputPath = cli.FileSystem().CurrentDir()
}
if err = util.CopyDir(resourcesDir, outputPath); err != nil {
return fmt.Errorf("error occurred while extracting the image resources, %v", err)
}
absOutputPath, _ := filepath.Abs(outputPath)
fmt.Fprintf(cli.Out(), fmt.Sprintf("\nExtracted Resources: %s", util.Bold(absOutputPath)))
util.PrintSuccessMessage(fmt.Sprintf("Successfully extracted cell image resources: %s", util.Bold(cellImage)))
} else {
fmt.Fprintf(cli.Out(), fmt.Sprintf("\nNo resources available in %s\n", util.Bold(cellImage)))
}
return nil
}