add dependency, start provider and fetch data
add tons of labels Provide - WIP add rancher data over rancher types first version of direct fetch - pagination still an issue
This commit is contained in:
Manuel Laufenberg
parent
28054a0be3
commit
38bd49b97e
6 changed files with 533 additions and 6 deletions
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@ -51,6 +51,7 @@ type GlobalConfiguration struct {
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Mesos *provider.Mesos `description:"Enable Mesos backend"`
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Eureka *provider.Eureka `description:"Enable Eureka backend"`
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ECS *provider.ECS `description:"Enable ECS backend"`
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Rancher *provider.Rancher `description:"Enable Rancher backend"`
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}
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// DefaultEntryPoints holds default entry points
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@ -415,6 +416,10 @@ func NewTraefikDefaultPointersConfiguration() *TraefikConfiguration {
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ECS: &defaultECS,
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Retry: &Retry{},
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}
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//default Rancher
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//@TODO: ADD
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return &TraefikConfiguration{
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GlobalConfiguration: defaultConfiguration,
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}
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18
glide.lock
generated
18
glide.lock
generated
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@ -1,5 +1,5 @@
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hash: a0b0abed2162e490cbe75a6a36ebaaf39e748ee80e419e879e7253679a0bc134
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updated: 2017-02-05T18:09:09.856588042Z
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hash: b2ac93355c3f551a75216a800337cee9321f6c9a04a18ab1fa8d8152e89b7595
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updated: 2017-02-05T23:00:24.927243212+01:00
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imports:
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- name: bitbucket.org/ww/goautoneg
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version: 75cd24fc2f2c2a2088577d12123ddee5f54e0675
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@ -300,6 +300,8 @@ imports:
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version: 44d81051d367757e1c7c6a5a86423ece9afcf63c
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- name: github.com/gorilla/context
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version: 1ea25387ff6f684839d82767c1733ff4d4d15d0a
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- name: github.com/gorilla/websocket
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version: c36f2fe5c330f0ac404b616b96c438b8616b1aaf
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- name: github.com/hashicorp/consul
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version: fce7d75609a04eeb9d4bf41c8dc592aac18fc97d
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subpackages:
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@ -370,7 +372,7 @@ imports:
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- name: github.com/mvdan/xurls
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version: fa08908f19eca8c491d68c6bd8b4b44faea6daf8
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- name: github.com/NYTimes/gziphandler
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version: f6438dbf4a82c56684964b03956aa727b0d7816b
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version: 6710af535839f57c687b62c4c23d649f9545d885
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- name: github.com/ogier/pflag
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version: 45c278ab3607870051a2ea9040bb85fcb8557481
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- name: github.com/opencontainers/runc
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@ -386,6 +388,8 @@ imports:
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- ovh
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- name: github.com/pborman/uuid
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version: 5007efa264d92316c43112bc573e754bc889b7b1
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- name: github.com/pkg/errors
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version: 248dadf4e9068a0b3e79f02ed0a610d935de5302
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- name: github.com/pmezard/go-difflib
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version: d8ed2627bdf02c080bf22230dbb337003b7aba2d
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subpackages:
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@ -414,6 +418,12 @@ imports:
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version: ab4b0d7ff424c462da486aef27f354cdeb29a319
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subpackages:
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- src/egoscale
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- name: github.com/rancher/go-rancher
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version: 2c43ff300f3eafcbd7d0b89b10427fc630efdc1e
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subpackages:
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- client
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- name: github.com/rcrowley/go-metrics
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version: 1f30fe9094a513ce4c700b9a54458bbb0c96996c
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- name: github.com/ryanuber/go-glob
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version: 572520ed46dbddaed19ea3d9541bdd0494163693
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- name: github.com/samuel/go-zookeeper
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@ -739,8 +749,6 @@ testImports:
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version: 06479209bdc0d4135911688c18157bd39bd99c22
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subpackages:
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- specs-go
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- name: github.com/pkg/errors
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version: 01fa4104b9c248c8945d14d9f128454d5b28d595
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- name: github.com/vbatts/tar-split
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version: 6810cedb21b2c3d0b9bb8f9af12ff2dc7a2f14df
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subpackages:
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@ -136,3 +136,5 @@ import:
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version: v0.3
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subpackages:
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- proto
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- package: github.com/rancher/go-rancher
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version: 2c43ff300f3eafcbd7d0b89b10427fc630efdc1e
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471
provider/rancher.go
Normal file
471
provider/rancher.go
Normal file
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@ -0,0 +1,471 @@
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package provider
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import (
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rancher "github.com/rancher/go-rancher/client"
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"github.com/containous/traefik/safe"
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"github.com/containous/traefik/types"
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"github.com/containous/traefik/log"
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"github.com/cenk/backoff"
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"github.com/containous/traefik/job"
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"time"
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"github.com/BurntSushi/ty/fun"
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//"context"
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"errors"
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"strings"
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"strconv"
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"math"
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"fmt"
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"text/template"
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)
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var _ Provider = (*Rancher)(nil)
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// Rancher holds configurations of the Docker provider.
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type Rancher struct {
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BaseProvider `mapstructure:",squash"`
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Endpoint string `description:"Rancher server HTTP(S) endpoint."`
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AccessKey string `description:"Rancher server access key."`
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SecretKey string `description:"Rancher server Secret Key."`
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ExposedByDefault bool `description:"Expose Services by default"`
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Domain string `description:"Default domain used"`
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}
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type rancherData struct {
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Name string
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Labels map[string]string // List of labels set to container or service
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Containers []string
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Health string
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}
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func (r rancherData)String() string{
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return fmt.Sprintf("{name:%s, labels:%v, containers: %v, health: %s}", r.Name, r.Labels, r.Containers, r.Health)
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}
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// Frontend Labels
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func (provider *Rancher) getPassHostHeader(service rancherData) string {
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if passHostHeader, err := getServiceLabel(service, "traefik.frontend.passHostHeader"); err == nil {
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return passHostHeader
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}
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return "true"
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}
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func (provider *Rancher) getPriority(service rancherData) string {
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if priority, err := getServiceLabel(service, "traefik.frontend.priority"); err == nil {
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return priority
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}
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return "0"
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}
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func (provider *Rancher) getEntryPoints(service rancherData) []string {
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if entryPoints, err := getServiceLabel(service, "traefik.frontend.entryPoints"); err == nil {
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return strings.Split(entryPoints, ",")
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}
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return []string{}
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}
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func (provider *Rancher) getFrontendRule(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.frontend.rule"); err == nil {
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return label
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}
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return "Host:" + strings.ToLower(strings.Replace(service.Name, "/", "_", -1)) + "." + provider.Domain
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}
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func (provider *Rancher) getFrontendName(service rancherData) string {
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// Replace '.' with '-' in quoted keys because of this issue https://github.com/BurntSushi/toml/issues/78
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return normalize(provider.getFrontendRule(service))
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}
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// Backend Labels
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func (provider *Rancher) getLoadBalancerMethod(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.backend.loadbalancer.method"); err == nil {
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return label
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}
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return "wrr"
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}
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func (provider *Rancher) hasLoadBalancerLabel(service rancherData) bool {
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_, errMethod := getServiceLabel(service, "traefik.backend.loadbalancer.method")
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_, errSticky := getServiceLabel(service, "traefik.backend.loadbalancer.sticky")
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if errMethod != nil && errSticky != nil {
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return false
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}
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return true
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}
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func (provider *Rancher) hasCircuitBreakerLabel(service rancherData) bool {
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if _, err := getServiceLabel(service, "traefik.backend.circuitbreaker.expression"); err != nil {
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return false
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}
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return true
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}
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func (provider *Rancher) getCircuitBreakerExpression(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.backend.circuitbreaker.expression"); err == nil {
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return label
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}
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return "NetworkErrorRatio() > 1"
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}
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func (provider *Rancher) getSticky(service rancherData) string {
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if _, err := getServiceLabel(service, "traefik.backend.loadbalancer.sticky"); err == nil {
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return "true"
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}
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return "false"
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}
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func (provider *Rancher) getBackend(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.backend"); err == nil {
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return normalize(label)
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}
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return normalize(service.Name)
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}
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// Generall Application Stuff
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func (provider *Rancher) getPort(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.port"); err == nil {
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return label
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}
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return ""
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}
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func (provider *Rancher) getProtocol(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.protocol"); err == nil {
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return label
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}
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return "http"
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}
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func (provider *Rancher) getWeight(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.weight"); err == nil {
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return label
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}
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return "0"
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}
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func (provider *Rancher) getDomain(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.domain"); err == nil {
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return label
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}
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return ""
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}
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func (provider *Rancher) hasMaxConnLabels(service rancherData) bool {
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if _, err := getServiceLabel(service, "traefik.backend.maxconn.amount"); err != nil {
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return false
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}
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if _, err := getServiceLabel(service, "traefik.backend.maxconn.extractorfunc"); err != nil {
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return false
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}
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return true
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}
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func (provider *Rancher) getMaxConnAmount(service rancherData) int64 {
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if label, err := getServiceLabel(service, "traefik.backend.maxconn.amount"); err == nil {
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i, errConv := strconv.ParseInt(label, 10, 64)
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if errConv != nil {
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log.Errorf("Unable to parse traefik.backend.maxconn.amount %s", label)
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return math.MaxInt64
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}
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return i
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}
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return math.MaxInt64
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}
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func (provider *Rancher) getMaxConnExtractorFunc(service rancherData) string {
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if label, err := getServiceLabel(service, "traefik.backend.maxconn.extractorfunc"); err == nil {
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return label
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}
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return "request.host"
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}
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// Container Stuff
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func (provider *Rancher) getIPAddress(container *rancher.Container) string {
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ipAdress := container.PrimaryIpAddress;
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if ipAdress != ""{
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return ipAdress
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}
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return ""
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}
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func getServiceLabel(service rancherData, label string) (string, error) {
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for key, value := range service.Labels {
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if key == label {
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return value, nil
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}
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}
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return "", errors.New("Label not found:" + label)
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}
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func (provider *Rancher) createClient() (*rancher.RancherClient, error) {
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return rancher.NewRancherClient(&rancher.ClientOpts{
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Url: provider.Endpoint,
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AccessKey: provider.AccessKey,
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SecretKey: provider.SecretKey,
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})
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}
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func (provider *Rancher) Provide(configurationChan chan<- types.ConfigMessage, pool *safe.Pool, constraints types.Constraints) error {
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safe.Go(func() {
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operation := func() error {
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rancherClient, err := provider.createClient()
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//ctx := context.Background()
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var environments = listRancherEnvironments(rancherClient)
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var services = listRancherServices(rancherClient)
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var container = listRancherContainer(rancherClient)
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var rancherData = parseRancherData(environments, services, container)
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fmt.Printf("Rancher Data #2 %s", &rancherData)
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if err != nil {
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log.Errorf("Failed to create a client for docker, error: %s", err)
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return err
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}
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configuration := provider.loadRancherConfig(rancherData)
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configurationChan <- types.ConfigMessage{
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ProviderName: "rancher",
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Configuration: configuration,
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}
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return nil
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}
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notify := func(err error, time time.Duration) {
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log.Errorf("Rancher connection error %+v, retrying in %s", err, time)
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}
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err := backoff.RetryNotify(operation, job.NewBackOff(backoff.NewExponentialBackOff()), notify)
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if err != nil {
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log.Errorf("Cannot connect to Rancher Endpoint %+v", err)
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}
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})
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return nil
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}
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func listRancherEnvironments(client *rancher.RancherClient)([]*rancher.Environment){
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var environmentList = []*rancher.Environment{}
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environments, err := client.Environment.List(nil)
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if err != nil {
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log.Errorf("Cannot get Rancher Environments %+v", err)
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}
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for k, environment := range environments.Data {
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log.Debugf("Adding environment with id %s", environment.Id)
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environmentList = append(environmentList, &environments.Data[k])
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}
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return environmentList
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}
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/*
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"io.rancher.stack.name"
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*/
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func listRancherServices(client *rancher.RancherClient)([]*rancher.Service){
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var servicesList = []*rancher.Service{}
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services, err := client.Service.List(nil)
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if err != nil {
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log.Errorf("Cannot get Rancher Services %+v", err)
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}
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for k, service := range services.Data {
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log.Debugf("Adding service with id %s", service.Id)
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servicesList = append(servicesList, &services.Data[k])
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}
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return servicesList
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}
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func listRancherContainer(client *rancher.RancherClient)([]*rancher.Container){
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var containerList = []*rancher.Container{}
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container, err := client.Container.List(nil)
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if err != nil {
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log.Errorf("Cannot get Rancher Services %+v", err)
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}
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for k, singleContainer := range container.Data {
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log.Debugf("Adding container with id %s", singleContainer.Id)
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containerList = append(containerList, &container.Data[k])
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}
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return containerList
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}
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func parseRancherData(environments []*rancher.Environment, services []*rancher.Service, containers []*rancher.Container) []rancherData {
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log.Debugf("Starting to parse Rancher Data")
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var rancherDataList []rancherData
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for _, environment := range environments {
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log.Debugf("Iterating trough environment %s", environment.Name)
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for _, service := range services {
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log.Debugf("Iterating trough service %s with id %s for environment %s", service.Name, service.AccountId, environment.Id)
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if service.EnvironmentId != environment.Id {
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log.Debugf("NO MATCH")
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continue
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}
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rancherData := rancherData{
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Name: environment.Name + "/" + service.Name,
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Health: service.HealthState,
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Labels: make(map[string]string),
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Containers: []string{},
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}
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for key, value := range service.LaunchConfig.Labels {
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rancherData.Labels[key] = value.(string)
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}
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for _, container := range containers {
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for key, value := range container.Labels {
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if key == "io.rancher.stack_service.name" && value == rancherData.Name {
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rancherData.Containers = append(rancherData.Containers, container.PrimaryIpAddress)
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}
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}
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}
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rancherDataList = append(rancherDataList, rancherData)
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}
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}
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return rancherDataList
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}
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func (provider *Rancher) loadRancherConfig(services []rancherData) *types.Configuration {
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var RancherFuncMap = template.FuncMap{
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"getIPAddress": provider.getIPAddress,
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"getPort": provider.getPort,
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"getBackend": provider.getBackend,
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"getWeight": provider.getWeight,
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"getDomain": provider.getDomain,
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"getProtocol": provider.getProtocol,
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"getPassHostHeader": provider.getPassHostHeader,
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"getPriority": provider.getPriority,
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"getEntryPoints": provider.getEntryPoints,
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"getFrontendRule": provider.getFrontendRule,
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"hasCircuitBreakerLabel": provider.hasCircuitBreakerLabel,
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"getCircuitBreakerExpression": provider.getCircuitBreakerExpression,
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"hasLoadBalancerLabel": provider.hasLoadBalancerLabel,
|
||||
"getLoadBalancerMethod": provider.getLoadBalancerMethod,
|
||||
"hasMaxConnLabels": provider.hasMaxConnLabels,
|
||||
"getMaxConnAmount": provider.getMaxConnAmount,
|
||||
"getMaxConnExtractorFunc": provider.getMaxConnExtractorFunc,
|
||||
"getSticky": provider.getSticky,
|
||||
}
|
||||
|
||||
|
||||
// filter services
|
||||
filteredServices := fun.Filter(func(service rancherData) bool {
|
||||
return provider.serviceFilter(service)
|
||||
}, services).([]rancherData)
|
||||
|
||||
frontends := map[string]rancherData{}
|
||||
backends := map[string]rancherData{}
|
||||
|
||||
for _, service := range filteredServices {
|
||||
frontendName := provider.getFrontendName(service)
|
||||
frontends[frontendName] = service
|
||||
backendName := provider.getBackend(service)
|
||||
backends[backendName] = service
|
||||
}
|
||||
|
||||
fmt.Printf("Frontends %v", frontends)
|
||||
fmt.Printf("Backends %v", backends)
|
||||
|
||||
templateObjects := struct {
|
||||
Frontends map[string]rancherData
|
||||
Backends map[string]rancherData
|
||||
Domain string
|
||||
}{
|
||||
frontends,
|
||||
backends,
|
||||
provider.Domain,
|
||||
}
|
||||
|
||||
configuration, err := provider.getConfiguration("templates/rancher.tmpl", RancherFuncMap, templateObjects)
|
||||
if err != nil {
|
||||
log.Error(err)
|
||||
}
|
||||
return configuration
|
||||
|
||||
}
|
||||
|
||||
func (provider *Rancher) serviceFilter(service rancherData) bool {
|
||||
|
||||
if service.Labels["traefik.port"] == "" {
|
||||
log.Debugf("Filtering service %s without traefik.port label", service.Name)
|
||||
return false;
|
||||
}
|
||||
|
||||
if !isServiceEnabled(service, provider.ExposedByDefault) {
|
||||
log.Debugf("Filtering disabled service %s", service.Name)
|
||||
return false
|
||||
}
|
||||
|
||||
/*
|
||||
constraintTags := strings.Split(container.Labels["traefik.tags"], ",")
|
||||
if ok, failingConstraint := provider.MatchConstraints(constraintTags); !ok {
|
||||
if failingConstraint != nil {
|
||||
log.Debugf("Container %v pruned by '%v' constraint", container.Name, failingConstraint.String())
|
||||
}
|
||||
return false
|
||||
}
|
||||
*/
|
||||
|
||||
if service.Health != "" && service.Health != "healthy" {
|
||||
log.Debugf("Filtering unhealthy or starting service %s", service.Name)
|
||||
return false
|
||||
}
|
||||
|
||||
log.Debugf("Service %s is enabled!", service.Name)
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func (provider *Rancher) containerFilter(container *rancher.Container, instanceIds []string) bool {
|
||||
|
||||
//log.Debugf("Filtering Containers for InstanceIds %v ", instanceIds)
|
||||
for _, instanceId := range instanceIds {
|
||||
|
||||
//log.Debugf("Looking for instanceId %s on on container %s", instanceId, container.Id)
|
||||
if container.Id == instanceId {
|
||||
//log.Debugf("Found container with id %s", instanceId)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
return false
|
||||
}
|
||||
|
||||
func isServiceEnabled(service rancherData, exposedByDefault bool) bool {
|
||||
|
||||
if service.Labels["traefik.enable"] != "" {
|
||||
var v = service.Labels["traefik.enable"]
|
||||
return exposedByDefault && v != "false" || v == "true"
|
||||
}
|
||||
return false
|
||||
}
|
||||
|
|
@ -377,6 +377,9 @@ func (server *Server) configureProviders() {
|
|||
if server.globalConfiguration.ECS != nil {
|
||||
server.providers = append(server.providers, server.globalConfiguration.ECS)
|
||||
}
|
||||
if server.globalConfiguration.Rancher != nil {
|
||||
server.providers = append(server.providers, server.globalConfiguration.Rancher)
|
||||
}
|
||||
}
|
||||
|
||||
func (server *Server) startProviders() {
|
||||
|
|
|
|||
38
templates/rancher.tmpl
Normal file
38
templates/rancher.tmpl
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
{{$backendServers := .Backends}}
|
||||
[backends]{{range $backendName, $backend := .Backends}}
|
||||
{{if hasCircuitBreakerLabel $backend}}
|
||||
[backends.backend-{{$backendName}}.circuitbreaker]
|
||||
expression = "{{getCircuitBreakerExpression $backend}}"
|
||||
{{end}}
|
||||
|
||||
{{if hasLoadBalancerLabel $backend}}
|
||||
[backends.backend-{{$backendName}}.loadbalancer]
|
||||
method = "{{getLoadBalancerMethod $backend}}"
|
||||
sticky = {{getSticky $backend}}
|
||||
{{end}}
|
||||
|
||||
{{if hasMaxConnLabels $backend}}
|
||||
[backends.backend-{{$backendName}}.maxconn]
|
||||
amount = {{getMaxConnAmount $backend}}
|
||||
extractorfunc = "{{getMaxConnExtractorFunc $backend}}"
|
||||
{{end}}
|
||||
|
||||
{{range $index, $ip := $backend.Containers}}
|
||||
[backends.backend-{{$backendName}}.servers.server-{{$index}}]
|
||||
url = "{{getProtocol $backend}}://{{$ip}}:{{getPort $backend}}"
|
||||
weight = {{getWeight $backend}}
|
||||
{{end}}
|
||||
|
||||
{{end}}
|
||||
|
||||
[frontends]{{range $frontendName, $service := .Frontends}}
|
||||
[frontends."frontend-{{$frontendName}}"]
|
||||
backend = "backend-{{getBackend $service}}"
|
||||
passHostHeader = {{getPassHostHeader $service}}
|
||||
priority = {{getPriority $service}}
|
||||
entryPoints = [{{range getEntryPoints $service}}
|
||||
"{{.}}",
|
||||
{{end}}]
|
||||
[frontends."frontend-{{$frontendName}}".routes."route-frontend-{{$frontendName}}"]
|
||||
rule = "{{getFrontendRule $service}}"
|
||||
{{end}}
|
||||
Loading…
Reference in a new issue