Introduce static config hints
Co-authored-by: Baptiste Mayelle <baptiste.mayelle@traefik.io>
This commit is contained in:
Romain
GitHub
parent
bab48bed22
commit
f9831f5b1b
8 changed files with 1176 additions and 7 deletions
541
pkg/cli/deprecation.go
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541
pkg/cli/deprecation.go
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@ -0,0 +1,541 @@
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package cli
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import (
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"errors"
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"os"
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"reflect"
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"strings"
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"github.com/rs/zerolog"
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"github.com/rs/zerolog/log"
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"github.com/traefik/paerser/cli"
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"github.com/traefik/paerser/flag"
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"github.com/traefik/paerser/parser"
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)
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type DeprecationLoader struct{}
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func (d DeprecationLoader) Load(args []string, cmd *cli.Command) (bool, error) {
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if logDeprecation(cmd.Configuration, args) {
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return true, errors.New("incompatible deprecated static option found")
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}
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return false, nil
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}
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// logDeprecation prints deprecation hints and returns whether incompatible deprecated options need to be removed.
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func logDeprecation(traefikConfiguration interface{}, args []string) bool {
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// This part doesn't handle properly a flag defined like this:
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// --accesslog true
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// where `true` could be considered as a new argument.
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// This is not really an issue with the deprecation loader since it will filter the unknown nodes later in this
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// function.
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for i, arg := range args {
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if !strings.Contains(arg, "=") {
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args[i] = arg + "=true"
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}
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}
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labels, err := flag.Parse(args, nil)
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if err != nil {
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log.Error().Err(err).Msg("deprecated static options analysis failed")
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return false
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}
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node, err := parser.DecodeToNode(labels, "traefik")
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if err != nil {
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log.Error().Err(err).Msg("deprecated static options analysis failed")
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return false
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}
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if node != nil && len(node.Children) > 0 {
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config := &configuration{}
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filterUnknownNodes(reflect.TypeOf(config), node)
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if len(node.Children) > 0 {
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// Telling parser to look for the label struct tag to allow empty values.
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err = parser.AddMetadata(config, node, parser.MetadataOpts{TagName: "label"})
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if err != nil {
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log.Error().Err(err).Msg("deprecated static options analysis failed")
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return false
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}
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err = parser.Fill(config, node, parser.FillerOpts{})
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if err != nil {
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log.Error().Err(err).Msg("deprecated static options analysis failed")
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return false
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}
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if config.deprecationNotice(log.With().Str("loader", "FLAG").Logger()) {
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return true
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}
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// No further deprecation parsing and logging,
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// as args configuration contains at least one deprecated option.
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return false
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}
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}
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// FILE
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ref, err := flag.Parse(args, traefikConfiguration)
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if err != nil {
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log.Error().Err(err).Msg("deprecated static options analysis failed")
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return false
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}
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configFileFlag := "traefik.configfile"
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if _, ok := ref["traefik.configFile"]; ok {
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configFileFlag = "traefik.configFile"
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}
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config := &configuration{}
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_, err = loadConfigFiles(ref[configFileFlag], config)
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if err == nil {
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if config.deprecationNotice(log.With().Str("loader", "FILE").Logger()) {
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return true
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}
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}
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config = &configuration{}
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l := EnvLoader{}
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_, err = l.Load(os.Args, &cli.Command{
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Configuration: config,
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})
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if err == nil {
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if config.deprecationNotice(log.With().Str("loader", "ENV").Logger()) {
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return true
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}
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}
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return false
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}
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func filterUnknownNodes(fType reflect.Type, node *parser.Node) bool {
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var children []*parser.Node
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for _, child := range node.Children {
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if hasKnownNodes(fType, child) {
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children = append(children, child)
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}
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}
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node.Children = children
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return len(node.Children) > 0
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}
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func hasKnownNodes(rootType reflect.Type, node *parser.Node) bool {
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rType := rootType
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if rootType.Kind() == reflect.Pointer {
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rType = rootType.Elem()
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}
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// unstructured type fitting anything, considering the current node as known.
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if rType.Kind() == reflect.Map && rType.Elem().Kind() == reflect.Interface {
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return true
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}
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// unstructured type fitting anything, considering the current node as known.
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if rType.Kind() == reflect.Interface {
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return true
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}
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// find matching field in struct type.
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field, b := findTypedField(rType, node)
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if !b {
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return b
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}
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if len(node.Children) > 0 {
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return filterUnknownNodes(field.Type, node)
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}
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return true
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}
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func findTypedField(rType reflect.Type, node *parser.Node) (reflect.StructField, bool) {
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// avoid panicking.
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if rType.Kind() != reflect.Struct {
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return reflect.StructField{}, false
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}
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for i := 0; i < rType.NumField(); i++ {
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cField := rType.Field(i)
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// ignore unexported fields.
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if cField.PkgPath == "" {
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if strings.EqualFold(cField.Name, node.Name) {
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node.FieldName = cField.Name
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return cField, true
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}
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}
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}
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return reflect.StructField{}, false
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}
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// configuration holds the static configuration removed/deprecated options.
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type configuration struct {
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Experimental *experimental `json:"experimental,omitempty" toml:"experimental,omitempty" yaml:"experimental,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Pilot map[string]any `json:"pilot,omitempty" toml:"pilot,omitempty" yaml:"pilot,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Providers *providers `json:"providers,omitempty" toml:"providers,omitempty" yaml:"providers,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Tracing *tracing `json:"tracing,omitempty" toml:"tracing,omitempty" yaml:"tracing,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (c *configuration) deprecationNotice(logger zerolog.Logger) bool {
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if c == nil {
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return false
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}
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var incompatible bool
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if c.Pilot != nil {
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incompatible = true
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logger.Error().Msg("Pilot configuration has been removed in v3, please remove all Pilot-related static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#pilot")
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}
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incompatibleExperimental := c.Experimental.deprecationNotice(logger)
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incompatibleProviders := c.Providers.deprecationNotice(logger)
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incompatibleTracing := c.Tracing.deprecationNotice(logger)
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return incompatible || incompatibleExperimental || incompatibleProviders || incompatibleTracing
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}
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type providers struct {
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Docker *docker `json:"docker,omitempty" toml:"docker,omitempty" yaml:"docker,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Swarm *swarm `json:"swarm,omitempty" toml:"swarm,omitempty" yaml:"swarm,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Consul *consul `json:"consul,omitempty" toml:"consul,omitempty" yaml:"consul,omitempty" label:"allowEmpty" file:"allowEmpty"`
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ConsulCatalog *consulCatalog `json:"consulCatalog,omitempty" toml:"consulCatalog,omitempty" yaml:"consulCatalog,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Nomad *nomad `json:"nomad,omitempty" toml:"nomad,omitempty" yaml:"nomad,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Marathon map[string]any `json:"marathon,omitempty" toml:"marathon,omitempty" yaml:"marathon,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Rancher map[string]any `json:"rancher,omitempty" toml:"rancher,omitempty" yaml:"rancher,omitempty" label:"allowEmpty" file:"allowEmpty"`
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ETCD *etcd `json:"etcd,omitempty" toml:"etcd,omitempty" yaml:"etcd,omitempty" label:"allowEmpty" file:"allowEmpty"`
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Redis *redis `json:"redis,omitempty" toml:"redis,omitempty" yaml:"redis,omitempty" label:"allowEmpty" file:"allowEmpty"`
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HTTP *http `json:"http,omitempty" toml:"http,omitempty" yaml:"http,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (p *providers) deprecationNotice(logger zerolog.Logger) bool {
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if p == nil {
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return false
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}
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var incompatible bool
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if p.Marathon != nil {
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incompatible = true
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logger.Error().Msg("Marathon provider has been removed in v3, please remove all Marathon-related static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#marathon-provider")
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}
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if p.Rancher != nil {
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incompatible = true
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logger.Error().Msg("Rancher provider has been removed in v3, please remove all Rancher-related static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#rancher-v1-provider")
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}
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dockerIncompatible := p.Docker.deprecationNotice(logger)
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consulIncompatible := p.Consul.deprecationNotice(logger)
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consulCatalogIncompatible := p.ConsulCatalog.deprecationNotice(logger)
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nomadIncompatible := p.Nomad.deprecationNotice(logger)
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swarmIncompatible := p.Swarm.deprecationNotice(logger)
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etcdIncompatible := p.ETCD.deprecationNotice(logger)
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redisIncompatible := p.Redis.deprecationNotice(logger)
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httpIncompatible := p.HTTP.deprecationNotice(logger)
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return incompatible ||
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dockerIncompatible ||
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consulIncompatible ||
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consulCatalogIncompatible ||
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nomadIncompatible ||
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swarmIncompatible ||
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etcdIncompatible ||
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redisIncompatible ||
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httpIncompatible
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}
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type tls struct {
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CAOptional *bool `json:"caOptional,omitempty" toml:"caOptional,omitempty" yaml:"caOptional,omitempty"`
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}
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type docker struct {
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SwarmMode *bool `json:"swarmMode,omitempty" toml:"swarmMode,omitempty" yaml:"swarmMode,omitempty"`
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (d *docker) deprecationNotice(logger zerolog.Logger) bool {
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if d == nil {
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return false
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}
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var incompatible bool
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if d.SwarmMode != nil {
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incompatible = true
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logger.Error().Msg("Docker provider `swarmMode` option has been removed in v3, please use the Swarm Provider instead." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#docker-docker-swarm")
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}
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if d.TLS != nil && d.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("Docker provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tlscaoptional")
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}
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return incompatible
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}
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type swarm struct {
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (s *swarm) deprecationNotice(logger zerolog.Logger) bool {
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if s == nil {
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return false
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}
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var incompatible bool
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if s.TLS != nil && s.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("Swarm provider `tls.CAOptional` option does not exist, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start.")
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}
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return incompatible
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}
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type etcd struct {
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (e *etcd) deprecationNotice(logger zerolog.Logger) bool {
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if e == nil {
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return false
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}
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var incompatible bool
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if e.TLS != nil && e.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("ETCD provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tlscaoptional_3")
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}
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return incompatible
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}
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type redis struct {
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (r *redis) deprecationNotice(logger zerolog.Logger) bool {
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if r == nil {
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return false
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}
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var incompatible bool
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if r.TLS != nil && r.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("Redis provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tlscaoptional_4")
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}
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return incompatible
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}
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type consul struct {
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Namespace *string `json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty"`
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (c *consul) deprecationNotice(logger zerolog.Logger) bool {
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if c == nil {
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return false
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}
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var incompatible bool
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if c.Namespace != nil {
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incompatible = true
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logger.Error().Msg("Consul provider `namespace` option has been removed, please use the `namespaces` option instead." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#consul-provider")
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}
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if c.TLS != nil && c.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("Consul provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tlscaoptional_1")
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}
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return incompatible
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}
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type consulCatalog struct {
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Namespace *string `json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty"`
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Endpoint *endpointConfig `json:"endpoint,omitempty" toml:"endpoint,omitempty" yaml:"endpoint,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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type endpointConfig struct {
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TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty"`
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}
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func (c *consulCatalog) deprecationNotice(logger zerolog.Logger) bool {
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if c == nil {
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return false
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}
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var incompatible bool
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if c.Namespace != nil {
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incompatible = true
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logger.Error().Msg("ConsulCatalog provider `namespace` option has been removed, please use the `namespaces` option instead." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#consulcatalog-provider")
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}
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if c.Endpoint != nil && c.Endpoint.TLS != nil && c.Endpoint.TLS.CAOptional != nil {
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incompatible = true
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logger.Error().Msg("ConsulCatalog provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
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"Please remove all occurrences from the static configuration for Traefik to start." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#endpointtlscaoptional")
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}
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return incompatible
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}
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type nomad struct {
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Namespace *string `json:"namespace,omitempty" toml:"namespace,omitempty" yaml:"namespace,omitempty"`
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Endpoint *endpointConfig `json:"endpoint,omitempty" toml:"endpoint,omitempty" yaml:"endpoint,omitempty" label:"allowEmpty" file:"allowEmpty"`
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}
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func (n *nomad) deprecationNotice(logger zerolog.Logger) bool {
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if n == nil {
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return false
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}
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var incompatible bool
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if n.Namespace != nil {
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incompatible = true
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logger.Error().Msg("Nomad provider `namespace` option has been removed, please use the `namespaces` option instead." +
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"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#nomad-provider")
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}
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if n.Endpoint != nil && n.Endpoint.TLS != nil && n.Endpoint.TLS.CAOptional != nil {
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incompatible = true
|
||||
logger.Error().Msg("Nomad provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
|
||||
"Please remove all occurrences from the static configuration for Traefik to start." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#endpointtlscaoptional_1")
|
||||
}
|
||||
|
||||
return incompatible
|
||||
}
|
||||
|
||||
type http struct {
|
||||
TLS *tls `json:"tls,omitempty" toml:"tls,omitempty" yaml:"tls,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
}
|
||||
|
||||
func (h *http) deprecationNotice(logger zerolog.Logger) bool {
|
||||
if h == nil {
|
||||
return false
|
||||
}
|
||||
|
||||
var incompatible bool
|
||||
|
||||
if h.TLS != nil && h.TLS.CAOptional != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("HTTP provider `tls.CAOptional` option has been removed in v3, as TLS client authentication is a server side option (see https://github.com/golang/go/blob/740a490f71d026bb7d2d13cb8fa2d6d6e0572b70/src/crypto/tls/common.go#L634)." +
|
||||
"Please remove all occurrences from the static configuration for Traefik to start." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tlscaoptional_2")
|
||||
}
|
||||
|
||||
return incompatible
|
||||
}
|
||||
|
||||
type experimental struct {
|
||||
HTTP3 *bool `json:"http3,omitempty" toml:"http3,omitempty" yaml:"http3,omitempty"`
|
||||
}
|
||||
|
||||
func (e *experimental) deprecationNotice(logger zerolog.Logger) bool {
|
||||
if e == nil {
|
||||
return false
|
||||
}
|
||||
|
||||
if e.HTTP3 != nil {
|
||||
logger.Error().Msg("HTTP3 is not an experimental feature in v3 and the associated enablement has been removed." +
|
||||
"Please remove its usage from the static configuration for Traefik to start." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#http3-experimental-configuration")
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
type tracing struct {
|
||||
SpanNameLimit *int `json:"spanNameLimit,omitempty" toml:"spanNameLimit,omitempty" yaml:"spanNameLimit,omitempty"`
|
||||
Jaeger map[string]any `json:"jaeger,omitempty" toml:"jaeger,omitempty" yaml:"jaeger,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
Zipkin map[string]any `json:"zipkin,omitempty" toml:"zipkin,omitempty" yaml:"zipkin,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
Datadog map[string]any `json:"datadog,omitempty" toml:"datadog,omitempty" yaml:"datadog,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
Instana map[string]any `json:"instana,omitempty" toml:"instana,omitempty" yaml:"instana,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
Haystack map[string]any `json:"haystack,omitempty" toml:"haystack,omitempty" yaml:"haystack,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
Elastic map[string]any `json:"elastic,omitempty" toml:"elastic,omitempty" yaml:"elastic,omitempty" label:"allowEmpty" file:"allowEmpty"`
|
||||
}
|
||||
|
||||
func (t *tracing) deprecationNotice(logger zerolog.Logger) bool {
|
||||
if t == nil {
|
||||
return false
|
||||
}
|
||||
var incompatible bool
|
||||
if t.SpanNameLimit != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("SpanNameLimit option for Tracing has been removed in v3, as Span names are now of a fixed length." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Jaeger != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Jaeger Tracing backend has been removed in v3, please remove all Jaeger-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Zipkin != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Zipkin Tracing backend has been removed in v3, please remove all Zipkin-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Datadog != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Datadog Tracing backend has been removed in v3, please remove all Datadog-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Instana != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Instana Tracing backend has been removed in v3, please remove all Instana-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Haystack != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Haystack Tracing backend has been removed in v3, please remove all Haystack-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
if t.Elastic != nil {
|
||||
incompatible = true
|
||||
logger.Error().Msg("Elastic Tracing backend has been removed in v3, please remove all Elastic-related Tracing static configuration for Traefik to start." +
|
||||
"In v3, Open Telemetry replaces specific tracing backend implementations, and an collector/exporter can be used to export metrics in a vendor specific format." +
|
||||
"For more information please read the migration guide: https://doc.traefik.io/traefik/v3.0/migration/v2-to-v3/#tracing")
|
||||
}
|
||||
|
||||
return incompatible
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue