Move code to pkg
This commit is contained in:
Ludovic Fernandez
Traefiker Bot
parent
bd4c822670
commit
f1b085fa36
465 changed files with 656 additions and 680 deletions
307
pkg/provider/file/file.go
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307
pkg/provider/file/file.go
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@ -0,0 +1,307 @@
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package file
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"path/filepath"
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"strings"
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"text/template"
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"github.com/containous/traefik/pkg/config"
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"github.com/containous/traefik/pkg/log"
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"github.com/containous/traefik/pkg/provider"
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"github.com/containous/traefik/pkg/safe"
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"github.com/containous/traefik/pkg/tls"
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"github.com/pkg/errors"
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"gopkg.in/fsnotify.v1"
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)
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const providerName = "file"
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var _ provider.Provider = (*Provider)(nil)
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// Provider holds configurations of the provider.
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type Provider struct {
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provider.BaseProvider `mapstructure:",squash" export:"true"`
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Directory string `description:"Load configuration from one or more .toml files in a directory" export:"true"`
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TraefikFile string
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}
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// Init the provider
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func (p *Provider) Init() error {
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return p.BaseProvider.Init()
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}
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// Provide allows the file provider to provide configurations to traefik
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// using the given configuration channel.
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func (p *Provider) Provide(configurationChan chan<- config.Message, pool *safe.Pool) error {
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configuration, err := p.BuildConfiguration()
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if err != nil {
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return err
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}
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if p.Watch {
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var watchItem string
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switch {
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case len(p.Directory) > 0:
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watchItem = p.Directory
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case len(p.Filename) > 0:
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watchItem = filepath.Dir(p.Filename)
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default:
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watchItem = filepath.Dir(p.TraefikFile)
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}
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if err := p.addWatcher(pool, watchItem, configurationChan, p.watcherCallback); err != nil {
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return err
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}
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}
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sendConfigToChannel(configurationChan, configuration)
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return nil
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}
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// BuildConfiguration loads configuration either from file or a directory specified by 'Filename'/'Directory'
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// and returns a 'Configuration' object
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func (p *Provider) BuildConfiguration() (*config.Configuration, error) {
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ctx := log.With(context.Background(), log.Str(log.ProviderName, providerName))
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if len(p.Directory) > 0 {
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return p.loadFileConfigFromDirectory(ctx, p.Directory, nil)
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}
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if len(p.Filename) > 0 {
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return p.loadFileConfig(p.Filename, true)
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}
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if len(p.TraefikFile) > 0 {
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return p.loadFileConfig(p.TraefikFile, false)
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}
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return nil, errors.New("error using file configuration backend, no filename defined")
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}
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func (p *Provider) addWatcher(pool *safe.Pool, directory string, configurationChan chan<- config.Message, callback func(chan<- config.Message, fsnotify.Event)) error {
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watcher, err := fsnotify.NewWatcher()
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if err != nil {
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return fmt.Errorf("error creating file watcher: %s", err)
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}
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err = watcher.Add(directory)
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if err != nil {
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return fmt.Errorf("error adding file watcher: %s", err)
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}
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// Process events
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pool.Go(func(stop chan bool) {
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defer watcher.Close()
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for {
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select {
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case <-stop:
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return
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case evt := <-watcher.Events:
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if p.Directory == "" {
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var filename string
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if len(p.Filename) > 0 {
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filename = p.Filename
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} else {
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filename = p.TraefikFile
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}
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_, evtFileName := filepath.Split(evt.Name)
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_, confFileName := filepath.Split(filename)
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if evtFileName == confFileName {
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callback(configurationChan, evt)
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}
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} else {
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callback(configurationChan, evt)
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}
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case err := <-watcher.Errors:
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log.WithoutContext().WithField(log.ProviderName, providerName).Errorf("Watcher event error: %s", err)
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}
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}
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})
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return nil
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}
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func (p *Provider) watcherCallback(configurationChan chan<- config.Message, event fsnotify.Event) {
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watchItem := p.TraefikFile
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if len(p.Directory) > 0 {
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watchItem = p.Directory
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} else if len(p.Filename) > 0 {
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watchItem = p.Filename
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}
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logger := log.WithoutContext().WithField(log.ProviderName, providerName)
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if _, err := os.Stat(watchItem); err != nil {
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logger.Errorf("Unable to watch %s : %v", watchItem, err)
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return
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}
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configuration, err := p.BuildConfiguration()
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if err != nil {
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logger.Errorf("Error occurred during watcher callback: %s", err)
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return
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}
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sendConfigToChannel(configurationChan, configuration)
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}
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func sendConfigToChannel(configurationChan chan<- config.Message, configuration *config.Configuration) {
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configurationChan <- config.Message{
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ProviderName: "file",
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Configuration: configuration,
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}
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}
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func readFile(filename string) (string, error) {
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if len(filename) > 0 {
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buf, err := ioutil.ReadFile(filename)
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if err != nil {
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return "", err
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}
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return string(buf), nil
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}
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return "", fmt.Errorf("invalid filename: %s", filename)
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}
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func (p *Provider) loadFileConfig(filename string, parseTemplate bool) (*config.Configuration, error) {
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fileContent, err := readFile(filename)
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if err != nil {
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return nil, fmt.Errorf("error reading configuration file: %s - %s", filename, err)
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}
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var configuration *config.Configuration
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if parseTemplate {
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configuration, err = p.CreateConfiguration(fileContent, template.FuncMap{}, false)
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} else {
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configuration, err = p.DecodeConfiguration(fileContent)
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}
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if err != nil {
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return nil, err
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}
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var tlsConfigs []*tls.Configuration
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for _, conf := range configuration.TLS {
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bytes, err := conf.Certificate.CertFile.Read()
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if err != nil {
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log.Error(err)
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continue
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}
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conf.Certificate.CertFile = tls.FileOrContent(string(bytes))
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bytes, err = conf.Certificate.KeyFile.Read()
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if err != nil {
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log.Error(err)
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continue
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}
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conf.Certificate.KeyFile = tls.FileOrContent(string(bytes))
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tlsConfigs = append(tlsConfigs, conf)
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}
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configuration.TLS = tlsConfigs
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return configuration, nil
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}
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func (p *Provider) loadFileConfigFromDirectory(ctx context.Context, directory string, configuration *config.Configuration) (*config.Configuration, error) {
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logger := log.FromContext(ctx)
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fileList, err := ioutil.ReadDir(directory)
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if err != nil {
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return configuration, fmt.Errorf("unable to read directory %s: %v", directory, err)
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}
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if configuration == nil {
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configuration = &config.Configuration{
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HTTP: &config.HTTPConfiguration{
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Routers: make(map[string]*config.Router),
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Middlewares: make(map[string]*config.Middleware),
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Services: make(map[string]*config.Service),
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},
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TCP: &config.TCPConfiguration{
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Routers: make(map[string]*config.TCPRouter),
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Services: make(map[string]*config.TCPService),
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},
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}
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}
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configTLSMaps := make(map[*tls.Configuration]struct{})
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for _, item := range fileList {
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if item.IsDir() {
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configuration, err = p.loadFileConfigFromDirectory(ctx, filepath.Join(directory, item.Name()), configuration)
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if err != nil {
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return configuration, fmt.Errorf("unable to load content configuration from subdirectory %s: %v", item, err)
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}
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continue
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} else if !strings.HasSuffix(item.Name(), ".toml") && !strings.HasSuffix(item.Name(), ".tmpl") {
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continue
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}
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var c *config.Configuration
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c, err = p.loadFileConfig(path.Join(directory, item.Name()), true)
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if err != nil {
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return configuration, err
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}
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for name, conf := range c.HTTP.Routers {
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if _, exists := configuration.HTTP.Routers[name]; exists {
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logger.WithField(log.RouterName, name).Warn("HTTP router already configured, skipping")
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} else {
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configuration.HTTP.Routers[name] = conf
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}
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}
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for name, conf := range c.HTTP.Middlewares {
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if _, exists := configuration.HTTP.Middlewares[name]; exists {
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logger.WithField(log.MiddlewareName, name).Warn("HTTP middleware already configured, skipping")
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} else {
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configuration.HTTP.Middlewares[name] = conf
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}
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}
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for name, conf := range c.HTTP.Services {
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if _, exists := configuration.HTTP.Services[name]; exists {
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logger.WithField(log.ServiceName, name).Warn("HTTP service already configured, skipping")
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} else {
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configuration.HTTP.Services[name] = conf
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}
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}
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for name, conf := range c.TCP.Routers {
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if _, exists := configuration.TCP.Routers[name]; exists {
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logger.WithField(log.RouterName, name).Warn("TCP router already configured, skipping")
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} else {
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configuration.TCP.Routers[name] = conf
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}
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}
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for name, conf := range c.TCP.Services {
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if _, exists := configuration.TCP.Services[name]; exists {
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logger.WithField(log.ServiceName, name).Warn("TCP service already configured, skipping")
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} else {
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configuration.TCP.Services[name] = conf
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}
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}
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for _, conf := range c.TLS {
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if _, exists := configTLSMaps[conf]; exists {
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logger.Warnf("TLS configuration %v already configured, skipping", conf)
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} else {
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configTLSMaps[conf] = struct{}{}
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}
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}
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}
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for conf := range configTLSMaps {
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configuration.TLS = append(configuration.TLS, conf)
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}
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return configuration, nil
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}
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360
pkg/provider/file/file_test.go
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360
pkg/provider/file/file_test.go
Normal file
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@ -0,0 +1,360 @@
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package file
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"path"
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"testing"
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"time"
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"github.com/containous/traefik/pkg/config"
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"github.com/containous/traefik/pkg/safe"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type ProvideTestCase struct {
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desc string
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directoryContent []string
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fileContent string
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traefikFileContent string
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expectedNumRouter int
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expectedNumService int
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expectedNumTLSConf int
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}
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func TestProvideWithoutWatch(t *testing.T) {
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for _, test := range getTestCases() {
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t.Run(test.desc+" without watch", func(t *testing.T) {
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provider, clean := createProvider(t, test, false)
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defer clean()
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configChan := make(chan config.Message)
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provider.DebugLogGeneratedTemplate = true
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.NoError(t, err)
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}()
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timeout := time.After(time.Second)
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select {
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case conf := <-configChan:
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assert.Len(t, conf.Configuration.HTTP.Services, test.expectedNumService)
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assert.Len(t, conf.Configuration.HTTP.Routers, test.expectedNumRouter)
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assert.Len(t, conf.Configuration.TLS, test.expectedNumTLSConf)
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case <-timeout:
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t.Errorf("timeout while waiting for config")
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}
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})
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}
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}
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func TestProvideWithWatch(t *testing.T) {
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for _, test := range getTestCases() {
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t.Run(test.desc+" with watch", func(t *testing.T) {
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provider, clean := createProvider(t, test, true)
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defer clean()
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configChan := make(chan config.Message)
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.NoError(t, err)
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}()
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timeout := time.After(time.Second)
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select {
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case conf := <-configChan:
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assert.Len(t, conf.Configuration.HTTP.Services, 0)
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assert.Len(t, conf.Configuration.HTTP.Routers, 0)
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assert.Len(t, conf.Configuration.TLS, 0)
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case <-timeout:
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t.Errorf("timeout while waiting for config")
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}
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if len(test.fileContent) > 0 {
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if err := ioutil.WriteFile(provider.Filename, []byte(test.fileContent), 0755); err != nil {
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t.Error(err)
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}
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}
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if len(test.traefikFileContent) > 0 {
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if err := ioutil.WriteFile(provider.TraefikFile, []byte(test.traefikFileContent), 0755); err != nil {
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t.Error(err)
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}
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}
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if len(test.directoryContent) > 0 {
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for _, fileContent := range test.directoryContent {
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createRandomFile(t, provider.Directory, fileContent)
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}
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}
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timeout = time.After(time.Second * 1)
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var numUpdates, numServices, numRouters, numTLSConfs int
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for {
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select {
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case conf := <-configChan:
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numUpdates++
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numServices = len(conf.Configuration.HTTP.Services)
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numRouters = len(conf.Configuration.HTTP.Routers)
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numTLSConfs = len(conf.Configuration.TLS)
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t.Logf("received update #%d: services %d/%d, routers %d/%d, TLS configs %d/%d", numUpdates, numServices, test.expectedNumService, numRouters, test.expectedNumRouter, numTLSConfs, test.expectedNumTLSConf)
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if numServices == test.expectedNumService && numRouters == test.expectedNumRouter && numTLSConfs == test.expectedNumTLSConf {
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return
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}
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case <-timeout:
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t.Fatal("timeout while waiting for config")
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}
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}
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})
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}
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}
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func TestErrorWhenEmptyConfig(t *testing.T) {
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provider := &Provider{}
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configChan := make(chan config.Message)
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errorChan := make(chan struct{})
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go func() {
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err := provider.Provide(configChan, safe.NewPool(context.Background()))
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assert.Error(t, err)
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close(errorChan)
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}()
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timeout := time.After(time.Second)
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select {
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case <-configChan:
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t.Fatal("We should not receive config message")
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case <-timeout:
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t.Fatal("timeout while waiting for config")
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case <-errorChan:
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}
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}
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func getTestCases() []ProvideTestCase {
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return []ProvideTestCase{
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{
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desc: "simple file",
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fileContent: createRoutersConfiguration(3) + createServicesConfiguration(6) + createTLS(5),
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expectedNumRouter: 3,
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expectedNumService: 6,
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expectedNumTLSConf: 5,
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},
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{
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desc: "simple file and a traefik file",
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fileContent: createRoutersConfiguration(4) + createServicesConfiguration(8) + createTLS(4),
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traefikFileContent: `
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debug=true
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`,
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expectedNumRouter: 4,
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expectedNumService: 8,
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expectedNumTLSConf: 4,
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},
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{
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desc: "template file",
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fileContent: `
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[http.routers]
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{{ range $i, $e := until 20 }}
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[http.routers.router{{ $e }}]
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service = "application"
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{{ end }}
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`,
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expectedNumRouter: 20,
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},
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{
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desc: "simple directory",
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directoryContent: []string{
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createRoutersConfiguration(2),
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createServicesConfiguration(3),
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createTLS(4),
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},
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expectedNumRouter: 2,
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expectedNumService: 3,
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expectedNumTLSConf: 4,
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},
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{
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desc: "template in directory",
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directoryContent: []string{
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`
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[http.routers]
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{{ range $i, $e := until 20 }}
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[http.routers.router{{ $e }}]
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service = "application"
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{{ end }}
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`,
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`
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[http.services]
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{{ range $i, $e := until 20 }}
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[http.services.application-{{ $e }}]
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[[http.services.application-{{ $e }}.servers]]
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url="http://127.0.0.1"
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weight = 1
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{{ end }}
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`,
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},
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expectedNumRouter: 20,
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expectedNumService: 20,
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},
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{
|
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desc: "simple traefik file",
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traefikFileContent: `
|
||||
debug=true
|
||||
[providers.file]
|
||||
` + createRoutersConfiguration(2) + createServicesConfiguration(3) + createTLS(4),
|
||||
expectedNumRouter: 2,
|
||||
expectedNumService: 3,
|
||||
expectedNumTLSConf: 4,
|
||||
},
|
||||
{
|
||||
desc: "simple traefik file with templating",
|
||||
traefikFileContent: `
|
||||
temp="{{ getTag \"test\" }}"
|
||||
[providers.file]
|
||||
` + createRoutersConfiguration(2) + createServicesConfiguration(3) + createTLS(4),
|
||||
expectedNumRouter: 2,
|
||||
expectedNumService: 3,
|
||||
expectedNumTLSConf: 4,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
func createProvider(t *testing.T, test ProvideTestCase, watch bool) (*Provider, func()) {
|
||||
tempDir := createTempDir(t, "testdir")
|
||||
|
||||
provider := &Provider{}
|
||||
provider.Watch = watch
|
||||
|
||||
if len(test.directoryContent) > 0 {
|
||||
if !watch {
|
||||
for _, fileContent := range test.directoryContent {
|
||||
createRandomFile(t, tempDir, fileContent)
|
||||
}
|
||||
}
|
||||
provider.Directory = tempDir
|
||||
}
|
||||
|
||||
if len(test.fileContent) > 0 {
|
||||
if watch {
|
||||
test.fileContent = ""
|
||||
}
|
||||
filename := createRandomFile(t, tempDir, test.fileContent)
|
||||
provider.Filename = filename.Name()
|
||||
|
||||
}
|
||||
|
||||
if len(test.traefikFileContent) > 0 {
|
||||
if watch {
|
||||
test.traefikFileContent = ""
|
||||
}
|
||||
filename := createRandomFile(t, tempDir, test.traefikFileContent)
|
||||
provider.TraefikFile = filename.Name()
|
||||
}
|
||||
|
||||
return provider, func() {
|
||||
os.Remove(tempDir)
|
||||
}
|
||||
}
|
||||
|
||||
// createRandomFile Helper
|
||||
func createRandomFile(t *testing.T, tempDir string, contents ...string) *os.File {
|
||||
return createFile(t, tempDir, fmt.Sprintf("temp%d.toml", time.Now().UnixNano()), contents...)
|
||||
}
|
||||
|
||||
// createFile Helper
|
||||
func createFile(t *testing.T, tempDir string, name string, contents ...string) *os.File {
|
||||
t.Helper()
|
||||
fileName := path.Join(tempDir, name)
|
||||
|
||||
tempFile, err := os.Create(fileName)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, content := range contents {
|
||||
_, err = tempFile.WriteString(content)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
}
|
||||
|
||||
err = tempFile.Close()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
return tempFile
|
||||
}
|
||||
|
||||
// createTempDir Helper
|
||||
func createTempDir(t *testing.T, dir string) string {
|
||||
t.Helper()
|
||||
d, err := ioutil.TempDir("", dir)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
return d
|
||||
}
|
||||
|
||||
// createRoutersConfiguration Helper
|
||||
func createRoutersConfiguration(n int) string {
|
||||
conf := "[http.routers]\n"
|
||||
for i := 1; i <= n; i++ {
|
||||
conf += fmt.Sprintf(`
|
||||
[http.routers."router%[1]d"]
|
||||
service = "application-%[1]d"
|
||||
`, i)
|
||||
}
|
||||
return conf
|
||||
}
|
||||
|
||||
// createServicesConfiguration Helper
|
||||
func createServicesConfiguration(n int) string {
|
||||
conf := "[http.services]\n"
|
||||
for i := 1; i <= n; i++ {
|
||||
conf += fmt.Sprintf(`
|
||||
[http.services.application-%[1]d.loadbalancer]
|
||||
[[http.services.application-%[1]d.loadbalancer.servers]]
|
||||
url = "http://172.17.0.%[1]d:80"
|
||||
weight = 1
|
||||
`, i)
|
||||
}
|
||||
return conf
|
||||
}
|
||||
|
||||
// createTLS Helper
|
||||
func createTLS(n int) string {
|
||||
var conf string
|
||||
for i := 1; i <= n; i++ {
|
||||
conf += fmt.Sprintf(`[[TLS]]
|
||||
EntryPoints = ["https"]
|
||||
[TLS.Certificate]
|
||||
CertFile = "integration/fixtures/https/snitest%[1]d.com.cert"
|
||||
KeyFile = "integration/fixtures/https/snitest%[1]d.com.key"
|
||||
`, i)
|
||||
}
|
||||
return conf
|
||||
}
|
||||
|
||||
func TestTLSContent(t *testing.T) {
|
||||
tempDir := createTempDir(t, "testdir")
|
||||
defer os.Remove(tempDir)
|
||||
|
||||
fileTLS := createRandomFile(t, tempDir, "CONTENT")
|
||||
fileConfig := createRandomFile(t, tempDir, `
|
||||
[[tls]]
|
||||
entryPoints = ["https"]
|
||||
[tls.certificate]
|
||||
certFile = "`+fileTLS.Name()+`"
|
||||
keyFile = "`+fileTLS.Name()+`"
|
||||
`)
|
||||
|
||||
provider := &Provider{}
|
||||
configuration, err := provider.loadFileConfig(fileConfig.Name(), true)
|
||||
require.NoError(t, err)
|
||||
|
||||
require.Equal(t, "CONTENT", configuration.TLS[0].Certificate.CertFile.String())
|
||||
require.Equal(t, "CONTENT", configuration.TLS[0].Certificate.KeyFile.String())
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue