* bump gopkg.in/yaml.v3 * test: cannot remove local items with cscli * test dangling links * test: cannot install local item with cscli * pkg/cwhub: reorg (move) functions in files * allow hub upgrade with local items * data download: honor Last-Modified header * fatal -> warning when attempting to remove a local item (allows remove --all) * cscli...inspect -o yaml|human: rename remote_path -> path * Correct count of removed items Still no separate counter for the --purge option, but should be clear enough
236 lines
6.1 KiB
Go
236 lines
6.1 KiB
Go
package cwhub
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// Install, upgrade and remove items from the hub to the local configuration
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import (
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"bytes"
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"crypto/sha256"
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"encoding/hex"
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"fmt"
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"io"
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"net/http"
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"os"
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"path/filepath"
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"github.com/enescakir/emoji"
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log "github.com/sirupsen/logrus"
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)
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// Upgrade downloads and applies the last version of the item from the hub.
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func (i *Item) Upgrade(force bool) (bool, error) {
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updated := false
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if i.IsLocal() {
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log.Infof("not upgrading %s: local item", i.Name)
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return false, nil
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}
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if !i.State.Downloaded {
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return false, fmt.Errorf("can't upgrade %s: not installed", i.Name)
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}
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if !i.State.Installed {
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return false, fmt.Errorf("can't upgrade %s: downloaded but not installed", i.Name)
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}
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if i.State.UpToDate {
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log.Infof("%s: up-to-date", i.Name)
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if err := i.DownloadDataIfNeeded(force); err != nil {
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return false, fmt.Errorf("%s: download failed: %w", i.Name, err)
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}
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if !force {
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// no upgrade needed
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return false, nil
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}
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}
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if _, err := i.downloadLatest(force, true); err != nil {
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return false, fmt.Errorf("%s: download failed: %w", i.Name, err)
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}
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if !i.State.UpToDate {
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if i.State.Tainted {
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log.Warningf("%v %s is tainted, --force to overwrite", emoji.Warning, i.Name)
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}
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} else {
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// a check on stdout is used while scripting to know if the hub has been upgraded
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// and a configuration reload is required
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// TODO: use a better way to communicate this
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fmt.Printf("updated %s\n", i.Name)
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log.Infof("%v %s: updated", emoji.Package, i.Name)
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updated = true
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}
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return updated, nil
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}
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// downloadLatest downloads the latest version of the item to the hub directory.
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func (i *Item) downloadLatest(overwrite bool, updateOnly bool) (string, error) {
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log.Debugf("Downloading %s %s", i.Type, i.Name)
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for _, sub := range i.SubItems() {
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if !sub.State.Installed && updateOnly && sub.State.Downloaded {
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log.Debugf("skipping upgrade of %s: not installed", i.Name)
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continue
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}
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log.Debugf("Download %s sub-item: %s %s (%t -> %t)", i.Name, sub.Type, sub.Name, i.State.Installed, updateOnly)
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// recurse as it's a collection
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if sub.HasSubItems() {
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log.Tracef("collection, recurse")
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if _, err := sub.downloadLatest(overwrite, updateOnly); err != nil {
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return "", fmt.Errorf("while downloading %s: %w", sub.Name, err)
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}
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}
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downloaded := sub.State.Downloaded
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if _, err := sub.download(overwrite); err != nil {
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return "", fmt.Errorf("while downloading %s: %w", sub.Name, err)
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}
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// We need to enable an item when it has been added to a collection since latest release of the collection.
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// We check if sub.Downloaded is false because maybe the item has been disabled by the user.
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if !sub.State.Installed && !downloaded {
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if err := sub.enable(); err != nil {
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return "", fmt.Errorf("enabling '%s': %w", sub.Name, err)
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}
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}
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}
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if !i.State.Installed && updateOnly && i.State.Downloaded {
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log.Debugf("skipping upgrade of %s: not installed", i.Name)
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return "", nil
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}
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ret, err := i.download(overwrite)
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if err != nil {
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return "", fmt.Errorf("failed to download item: %w", err)
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}
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return ret, nil
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}
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// fetch downloads the item from the hub, verifies the hash and returns the content.
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func (i *Item) fetch() ([]byte, error) {
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url, err := i.hub.remote.urlTo(i.RemotePath)
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if err != nil {
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return nil, fmt.Errorf("failed to build hub item request: %w", err)
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}
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resp, err := hubClient.Get(url)
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if err != nil {
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return nil, fmt.Errorf("while downloading %s: %w", url, err)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil, fmt.Errorf("bad http code %d for %s", resp.StatusCode, url)
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}
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body, err := io.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("while downloading %s: %w", url, err)
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}
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hash := sha256.New()
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if _, err = hash.Write(body); err != nil {
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return nil, fmt.Errorf("while hashing %s: %w", i.Name, err)
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}
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meow := hex.EncodeToString(hash.Sum(nil))
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if meow != i.Versions[i.Version].Digest {
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log.Errorf("Downloaded version doesn't match index, please 'hub update'")
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log.Debugf("got %s, expected %s", meow, i.Versions[i.Version].Digest)
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return nil, fmt.Errorf("invalid download hash for %s", i.Name)
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}
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return body, nil
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}
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// download downloads the item from the hub and writes it to the hub directory.
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func (i *Item) download(overwrite bool) (string, error) {
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if i.IsLocal() {
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return "", fmt.Errorf("%s is local, can't download", i.Name)
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}
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// if user didn't --force, don't overwrite local, tainted, up-to-date files
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if !overwrite {
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if i.State.Tainted {
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log.Debugf("%s: tainted, not updated", i.Name)
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return "", nil
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}
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if i.State.UpToDate {
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// We still have to check if data files are present
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log.Debugf("%s: up-to-date, not updated", i.Name)
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}
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}
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body, err := i.fetch()
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if err != nil {
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return "", err
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}
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// all good, install
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// ensure that target file is within target dir
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finalPath, err := i.downloadPath()
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if err != nil {
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return "", err
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}
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parentDir := filepath.Dir(finalPath)
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if err = os.MkdirAll(parentDir, os.ModePerm); err != nil {
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return "", fmt.Errorf("while creating %s: %w", parentDir, err)
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}
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// check actual file
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if _, err = os.Stat(finalPath); !os.IsNotExist(err) {
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log.Warningf("%s: overwrite", i.Name)
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log.Debugf("target: %s", finalPath)
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} else {
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log.Infof("%s: OK", i.Name)
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}
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if err = os.WriteFile(finalPath, body, 0o644); err != nil {
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return "", fmt.Errorf("while writing %s: %w", finalPath, err)
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}
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i.State.Downloaded = true
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i.State.Tainted = false
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i.State.UpToDate = true
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if err = downloadDataSet(i.hub.local.InstallDataDir, overwrite, bytes.NewReader(body)); err != nil {
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return "", fmt.Errorf("while downloading data for %s: %w", i.FileName, err)
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}
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return finalPath, nil
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}
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// DownloadDataIfNeeded downloads the data set for the item.
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func (i *Item) DownloadDataIfNeeded(force bool) error {
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itemFilePath, err := i.installPath()
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if err != nil {
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return err
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}
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itemFile, err := os.Open(itemFilePath)
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if err != nil {
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return fmt.Errorf("while opening %s: %w", itemFilePath, err)
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}
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defer itemFile.Close()
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if err = downloadDataSet(i.hub.local.InstallDataDir, force, itemFile); err != nil {
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return fmt.Errorf("while downloading data for %s: %w", itemFilePath, err)
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}
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return nil
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}
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