pkg_list.go 2.62 KB
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// Copyright 2018 The ksonnet authors
//
//
//    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 actions

import (
	"io"
	"os"
	"sort"
	"strings"

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	"github.com/ksonnet/ksonnet/pkg/app"
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	"github.com/ksonnet/ksonnet/pkg/registry"
	"github.com/ksonnet/ksonnet/pkg/util/table"
)

const (
	// pkgInstalled denotes a package is installed
	pkgInstalled = "*"
)

// RunPkgList runs `pkg list`
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func RunPkgList(m map[string]interface{}) error {
	rl, err := NewPkgList(m)
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	if err != nil {
		return err
	}

	return rl.Run()
}

// PkgList lists available registries
type PkgList struct {
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	app           app.App
	onlyInstalled bool

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	registryListFn func(ksApp app.App) ([]registry.Registry, error)
	out            io.Writer
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}

// NewPkgList creates an instance of PkgList
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func NewPkgList(m map[string]interface{}) (*PkgList, error) {
	ol := newOptionLoader(m)

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	rl := &PkgList{
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		app:           ol.LoadApp(),
		onlyInstalled: ol.LoadBool(OptionInstalled),
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		registryListFn: registry.List,
		out:            os.Stdout,
	}

	if ol.err != nil {
		return nil, ol.err
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	}

	return rl, nil
}

// Run runs the env list action.
func (pl *PkgList) Run() error {
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	registries, err := pl.registryListFn(pl.app)
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	if err != nil {
		return err
	}

	var rows [][]string

	appLibraries, err := pl.app.Libraries()
	if err != nil {
		return err
	}

	for _, r := range registries {
		spec, err := r.FetchRegistrySpec()
		if err != nil {
			return err
		}

		for libName := range spec.Libraries {
			_, isInstalled := appLibraries[libName]
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			if pl.onlyInstalled && !isInstalled {
				continue
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			}

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			rows = append(rows, pl.addRow(r.Name(), libName, isInstalled))
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		}
	}

	sort.Slice(rows, func(i, j int) bool {
		nameI := strings.Join([]string{rows[i][0], rows[i][1]}, "-")
		nameJ := strings.Join([]string{rows[j][0], rows[j][1]}, "-")

		return nameI < nameJ
	})

	t := table.New(pl.out)
	t.SetHeader([]string{"registry", "name", "installed"})
	t.AppendBulk(rows)
	return t.Render()
}
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func (pl *PkgList) addRow(regName, libName string, isInstalled bool) []string {
	row := []string{regName, libName}
	if isInstalled {
		row = append(row, pkgInstalled)
	}

	return row
}