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list_components.go
106 lines (97 loc) · 3.32 KB
/
list_components.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"
"regexp"
"strings"
"github.com/ghodss/yaml"
"github.com/olekukonko/tablewriter"
"github.com/cellery-io/sdk/components/cli/cli"
"github.com/cellery-io/sdk/components/cli/pkg/image"
)
func RunListComponents(cli cli.Cli, name string) error {
var err error
instancePattern, _ := regexp.MatchString(fmt.Sprintf("^%s$", celleryIdPattern), name)
if instancePattern {
var instanceComponents []string
if instanceComponents, err = getCellInstanceComponents(cli, name); err != nil {
return err
}
displayComponentsTable(instanceComponents)
} else {
imageComponents, err := getCellImageCompoents(cli, name)
if err != nil {
return err
}
displayComponentsTable(imageComponents)
}
return nil
}
func getCellImageCompoents(cli cli.Cli, cellImage string) ([]string, error) {
var components []string
cellYamlContent, err := image.ReadCellImageYaml(cli.FileSystem().Repository(), cellImage)
if err != nil {
return nil, fmt.Errorf("error while reading cell image content, %v", err)
}
cellImageContent := &image.Cell{}
if err := yaml.Unmarshal(cellYamlContent, cellImageContent); err != nil {
return nil, fmt.Errorf("error while unmarshalling cell image content, %v", err)
}
for _, component := range cellImageContent.Spec.Components {
components = append(components, component.Metadata.Name)
}
return components, nil
}
func getCellInstanceComponents(cli cli.Cli, cellName string) ([]string, error) {
var components []string
services, err := cli.KubeCli().GetServices(cellName)
if err != nil {
return nil, fmt.Errorf("error getting list of components, %v", err)
}
if len(services.Items) == 0 {
return nil, fmt.Errorf("error listing components, %v", fmt.Errorf("cannot find cell: %v \n", cellName))
} else {
for i := 0; i < len(services.Items); i++ {
var name string
name = strings.Replace(services.Items[i].Metadata.Name, cellName+"--", "", -1)
name = strings.Replace(name, "-service", "", -1)
components = append(components, name)
}
}
return components, nil
}
func displayComponentsTable(components []string) {
var tableData [][]string
for i := 0; i < len(components); i++ {
component := []string{components[i]}
tableData = append(tableData, component)
}
table := tablewriter.NewWriter(os.Stdout)
table.SetHeader([]string{"COMPONENT NAME"})
table.SetBorders(tablewriter.Border{Left: false, Top: false, Right: false, Bottom: false})
table.SetAlignment(3)
table.SetRowSeparator("-")
table.SetCenterSeparator(" ")
table.SetColumnSeparator(" ")
table.SetHeaderColor(tablewriter.Colors{tablewriter.Bold})
table.SetColumnColor(tablewriter.Colors{tablewriter.FgHiBlueColor})
table.AppendBulk(tableData)
table.Render()
}