traefik/configuration.go

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package main
import (
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"errors"
"fmt"
"github.com/containous/traefik/acme"
"github.com/containous/traefik/provider"
"github.com/containous/traefik/types"
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"regexp"
"strings"
"time"
)
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// TraefikConfiguration holds GlobalConfiguration and other stuff
type TraefikConfiguration struct {
GlobalConfiguration
ConfigFile string `short:"c" description:"Configuration file to use (TOML)."`
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}
// GlobalConfiguration holds global configuration (with providers, etc.).
// It's populated from the traefik configuration file passed as an argument to the binary.
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type GlobalConfiguration struct {
GraceTimeOut int64 `short:"g" description:"Configuration file to use (TOML)."`
Debug bool `short:"d" description:"Enable debug mode"`
AccessLogsFile string `description:"Access logs file"`
TraefikLogsFile string `description:"Traefik logs file"`
LogLevel string `short:"l" description:"Log level"`
EntryPoints EntryPoints `description:"Entrypoints definition using format: --entryPoints='Name:http Address::8000 Redirect.EntryPoint:https' --entryPoints='Name:https Address::4442 TLS:tests/traefik.crt,tests/traefik.key'"`
Constraints types.Constraints `description:"Filter services by constraint, matching with service tags."`
ACME *acme.ACME `description:"Enable ACME (Let's Encrypt): automatic SSL"`
DefaultEntryPoints DefaultEntryPoints `description:"Entrypoints to be used by frontends that do not specify any entrypoint"`
ProvidersThrottleDuration time.Duration `description:"Backends throttle duration: minimum duration between 2 events from providers before applying a new configuration. It avoids unnecessary reloads if multiples events are sent in a short amount of time."`
MaxIdleConnsPerHost int `description:"If non-zero, controls the maximum idle (keep-alive) to keep per-host. If zero, DefaultMaxIdleConnsPerHost is used"`
Retry *Retry `description:"Enable retry sending request if network error"`
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Docker *provider.Docker `description:"Enable Docker backend"`
File *provider.File `description:"Enable File backend"`
Web *WebProvider `description:"Enable Web backend"`
Marathon *provider.Marathon `description:"Enable Marathon backend"`
Consul *provider.Consul `description:"Enable Consul backend"`
ConsulCatalog *provider.ConsulCatalog `description:"Enable Consul catalog backend"`
Etcd *provider.Etcd `description:"Enable Etcd backend"`
Zookeeper *provider.Zookepper `description:"Enable Zookeeper backend"`
Boltdb *provider.BoltDb `description:"Enable Boltdb backend"`
Kubernetes *provider.Kubernetes `description:"Enable Kubernetes backend"`
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}
// DefaultEntryPoints holds default entry points
type DefaultEntryPoints []string
// String is the method to format the flag's value, part of the flag.Value interface.
// The String method's output will be used in diagnostics.
func (dep *DefaultEntryPoints) String() string {
return strings.Join(*dep, ",")
}
// Set is the method to set the flag value, part of the flag.Value interface.
// Set's argument is a string to be parsed to set the flag.
// It's a comma-separated list, so we split it.
func (dep *DefaultEntryPoints) Set(value string) error {
entrypoints := strings.Split(value, ",")
if len(entrypoints) == 0 {
return errors.New("Bad DefaultEntryPoints format: " + value)
}
for _, entrypoint := range entrypoints {
*dep = append(*dep, entrypoint)
}
return nil
}
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// Get return the EntryPoints map
func (dep *DefaultEntryPoints) Get() interface{} { return DefaultEntryPoints(*dep) }
// SetValue sets the EntryPoints map with val
func (dep *DefaultEntryPoints) SetValue(val interface{}) {
*dep = DefaultEntryPoints(val.(DefaultEntryPoints))
}
// Type is type of the struct
func (dep *DefaultEntryPoints) Type() string {
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return fmt.Sprint("defaultentrypoints")
}
// EntryPoints holds entry points configuration of the reverse proxy (ip, port, TLS...)
type EntryPoints map[string]*EntryPoint
// String is the method to format the flag's value, part of the flag.Value interface.
// The String method's output will be used in diagnostics.
func (ep *EntryPoints) String() string {
return fmt.Sprintf("%+v", *ep)
}
// Set is the method to set the flag value, part of the flag.Value interface.
// Set's argument is a string to be parsed to set the flag.
// It's a comma-separated list, so we split it.
func (ep *EntryPoints) Set(value string) error {
regex := regexp.MustCompile("(?:Name:(?P<Name>\\S*))\\s*(?:Address:(?P<Address>\\S*))?\\s*(?:TLS:(?P<TLS>\\S*))?\\s*(?:Redirect.EntryPoint:(?P<RedirectEntryPoint>\\S*))?\\s*(?:Redirect.Regex:(?P<RedirectRegex>\\S*))?\\s*(?:Redirect.Replacement:(?P<RedirectReplacement>\\S*))?")
match := regex.FindAllStringSubmatch(value, -1)
if match == nil {
return errors.New("Bad EntryPoints format: " + value)
}
matchResult := match[0]
result := make(map[string]string)
for i, name := range regex.SubexpNames() {
if i != 0 {
result[name] = matchResult[i]
}
}
var tls *TLS
if len(result["TLS"]) > 0 {
certs := Certificates{}
if err := certs.Set(result["TLS"]); err != nil {
return err
}
tls = &TLS{
Certificates: certs,
}
}
var redirect *Redirect
if len(result["RedirectEntryPoint"]) > 0 || len(result["RedirectRegex"]) > 0 || len(result["RedirectReplacement"]) > 0 {
redirect = &Redirect{
EntryPoint: result["RedirectEntryPoint"],
Regex: result["RedirectRegex"],
Replacement: result["RedirectReplacement"],
}
}
(*ep)[result["Name"]] = &EntryPoint{
Address: result["Address"],
TLS: tls,
Redirect: redirect,
}
return nil
}
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// Get return the EntryPoints map
func (ep *EntryPoints) Get() interface{} { return EntryPoints(*ep) }
// SetValue sets the EntryPoints map with val
func (ep *EntryPoints) SetValue(val interface{}) {
*ep = EntryPoints(val.(EntryPoints))
}
// Type is type of the struct
func (ep *EntryPoints) Type() string {
return fmt.Sprint("entrypoints")
}
// EntryPoint holds an entry point configuration of the reverse proxy (ip, port, TLS...)
type EntryPoint struct {
Network string
Address string
TLS *TLS
Redirect *Redirect
}
// Redirect configures a redirection of an entry point to another, or to an URL
type Redirect struct {
EntryPoint string
Regex string
Replacement string
}
// TLS configures TLS for an entry point
type TLS struct {
Certificates Certificates
}
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// Certificates defines traefik certificates type
type Certificates []Certificate
// String is the method to format the flag's value, part of the flag.Value interface.
// The String method's output will be used in diagnostics.
func (certs *Certificates) String() string {
if len(*certs) == 0 {
return ""
}
return (*certs)[0].CertFile + "," + (*certs)[0].KeyFile
}
// Set is the method to set the flag value, part of the flag.Value interface.
// Set's argument is a string to be parsed to set the flag.
// It's a comma-separated list, so we split it.
func (certs *Certificates) Set(value string) error {
files := strings.Split(value, ",")
if len(files) != 2 {
return errors.New("Bad certificates format: " + value)
}
*certs = append(*certs, Certificate{
CertFile: files[0],
KeyFile: files[1],
})
return nil
}
// Type is type of the struct
func (certs *Certificates) Type() string {
return fmt.Sprint("certificates")
}
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// Certificate holds a SSL cert/key pair
type Certificate struct {
CertFile string
KeyFile string
}
// Retry contains request retry config
type Retry struct {
Attempts int `description:"Number of attempts"`
}
// NewTraefikDefaultPointersConfiguration creates a TraefikConfiguration with pointers default values
func NewTraefikDefaultPointersConfiguration() *TraefikConfiguration {
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//default Docker
var defaultDocker provider.Docker
defaultDocker.Watch = true
defaultDocker.Endpoint = "unix:///var/run/docker.sock"
// default File
var defaultFile provider.File
defaultFile.Watch = true
defaultFile.Filename = "" //needs equivalent to viper.ConfigFileUsed()
// default Web
var defaultWeb WebProvider
defaultWeb.Address = ":8080"
// default Marathon
var defaultMarathon provider.Marathon
defaultMarathon.Watch = true
defaultMarathon.Endpoint = "http://127.0.0.1:8080"
defaultMarathon.ExposedByDefault = true
defaultMarathon.Constraints = []types.Constraint{}
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// default Consul
var defaultConsul provider.Consul
defaultConsul.Watch = true
defaultConsul.Endpoint = "127.0.0.1:8500"
defaultConsul.Prefix = "traefik"
defaultConsul.Constraints = []types.Constraint{}
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// default ConsulCatalog
var defaultConsulCatalog provider.ConsulCatalog
defaultConsulCatalog.Endpoint = "127.0.0.1:8500"
defaultConsulCatalog.Constraints = []types.Constraint{}
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// default Etcd
var defaultEtcd provider.Etcd
defaultEtcd.Watch = true
defaultEtcd.Endpoint = "127.0.0.1:400"
defaultEtcd.Prefix = "/traefik"
defaultEtcd.Constraints = []types.Constraint{}
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//default Zookeeper
var defaultZookeeper provider.Zookepper
defaultZookeeper.Watch = true
defaultZookeeper.Endpoint = "127.0.0.1:2181"
defaultZookeeper.Prefix = "/traefik"
defaultZookeeper.Constraints = []types.Constraint{}
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//default Boltdb
var defaultBoltDb provider.BoltDb
defaultBoltDb.Watch = true
defaultBoltDb.Endpoint = "127.0.0.1:4001"
defaultBoltDb.Prefix = "/traefik"
defaultBoltDb.Constraints = []types.Constraint{}
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//default Kubernetes
var defaultKubernetes provider.Kubernetes
defaultKubernetes.Watch = true
defaultKubernetes.Endpoint = "http://127.0.0.1:8080"
defaultKubernetes.Constraints = []types.Constraint{}
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defaultConfiguration := GlobalConfiguration{
Docker: &defaultDocker,
File: &defaultFile,
Web: &defaultWeb,
Marathon: &defaultMarathon,
Consul: &defaultConsul,
ConsulCatalog: &defaultConsulCatalog,
Etcd: &defaultEtcd,
Zookeeper: &defaultZookeeper,
Boltdb: &defaultBoltDb,
Kubernetes: &defaultKubernetes,
Retry: &Retry{},
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}
return &TraefikConfiguration{
GlobalConfiguration: defaultConfiguration,
}
}
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// NewTraefikConfiguration creates a TraefikConfiguration with default values
func NewTraefikConfiguration() *TraefikConfiguration {
return &TraefikConfiguration{
GlobalConfiguration: GlobalConfiguration{
GraceTimeOut: 10,
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AccessLogsFile: "",
TraefikLogsFile: "",
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LogLevel: "ERROR",
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EntryPoints: map[string]*EntryPoint{},
Constraints: []types.Constraint{},
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DefaultEntryPoints: []string{},
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ProvidersThrottleDuration: time.Duration(2 * time.Second),
MaxIdleConnsPerHost: 200,
},
ConfigFile: "",
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}
}
type configs map[string]*types.Configuration