Add Consul Catalog provider
This commit is contained in:
parent
d0ed814669
commit
7be2db6e86
52 changed files with 4194 additions and 67 deletions
200
pkg/provider/consulcatalog/config.go
Normal file
200
pkg/provider/consulcatalog/config.go
Normal file
|
@ -0,0 +1,200 @@
|
|||
package consulcatalog
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"net"
|
||||
|
||||
"github.com/containous/traefik/v2/pkg/config/dynamic"
|
||||
"github.com/containous/traefik/v2/pkg/config/label"
|
||||
"github.com/containous/traefik/v2/pkg/log"
|
||||
"github.com/containous/traefik/v2/pkg/provider"
|
||||
"github.com/containous/traefik/v2/pkg/provider/constraints"
|
||||
"github.com/hashicorp/consul/api"
|
||||
)
|
||||
|
||||
func (p *Provider) buildConfiguration(ctx context.Context, items []itemData) *dynamic.Configuration {
|
||||
configurations := make(map[string]*dynamic.Configuration)
|
||||
|
||||
for _, item := range items {
|
||||
svcName := item.Name + "-" + item.ID
|
||||
ctxSvc := log.With(ctx, log.Str("serviceName", svcName))
|
||||
|
||||
if !p.keepContainer(ctxSvc, item) {
|
||||
continue
|
||||
}
|
||||
|
||||
logger := log.FromContext(ctxSvc)
|
||||
|
||||
confFromLabel, err := label.DecodeConfiguration(item.Labels)
|
||||
if err != nil {
|
||||
logger.Error(err)
|
||||
continue
|
||||
}
|
||||
|
||||
if len(confFromLabel.TCP.Routers) > 0 || len(confFromLabel.TCP.Services) > 0 {
|
||||
err := p.buildTCPServiceConfiguration(ctxSvc, item, confFromLabel.TCP)
|
||||
if err != nil {
|
||||
logger.Error(err)
|
||||
continue
|
||||
}
|
||||
|
||||
provider.BuildTCPRouterConfiguration(ctxSvc, confFromLabel.TCP)
|
||||
|
||||
if len(confFromLabel.HTTP.Routers) == 0 &&
|
||||
len(confFromLabel.HTTP.Middlewares) == 0 &&
|
||||
len(confFromLabel.HTTP.Services) == 0 {
|
||||
configurations[svcName] = confFromLabel
|
||||
continue
|
||||
}
|
||||
}
|
||||
|
||||
err = p.buildServiceConfiguration(ctxSvc, item, confFromLabel.HTTP)
|
||||
if err != nil {
|
||||
logger.Error(err)
|
||||
continue
|
||||
}
|
||||
|
||||
model := struct {
|
||||
Name string
|
||||
Labels map[string]string
|
||||
}{
|
||||
Name: item.Name,
|
||||
Labels: item.Labels,
|
||||
}
|
||||
|
||||
provider.BuildRouterConfiguration(ctx, confFromLabel.HTTP, item.Name, p.defaultRuleTpl, model)
|
||||
|
||||
configurations[svcName] = confFromLabel
|
||||
}
|
||||
|
||||
return provider.Merge(ctx, configurations)
|
||||
}
|
||||
|
||||
func (p *Provider) keepContainer(ctx context.Context, item itemData) bool {
|
||||
logger := log.FromContext(ctx)
|
||||
|
||||
if !item.ExtraConf.Enable {
|
||||
logger.Debug("Filtering disabled item")
|
||||
return false
|
||||
}
|
||||
|
||||
matches, err := constraints.Match(item.Labels, p.Constraints)
|
||||
if err != nil {
|
||||
logger.Errorf("Error matching constraints expression: %v", err)
|
||||
return false
|
||||
}
|
||||
if !matches {
|
||||
logger.Debugf("Container pruned by constraint expression: %q", p.Constraints)
|
||||
return false
|
||||
}
|
||||
|
||||
if item.Status != api.HealthPassing && item.Status != api.HealthWarning {
|
||||
logger.Debug("Filtering unhealthy or starting item")
|
||||
return false
|
||||
}
|
||||
|
||||
return true
|
||||
}
|
||||
|
||||
func (p *Provider) buildTCPServiceConfiguration(ctx context.Context, item itemData, configuration *dynamic.TCPConfiguration) error {
|
||||
if len(configuration.Services) == 0 {
|
||||
configuration.Services = make(map[string]*dynamic.TCPService)
|
||||
|
||||
lb := &dynamic.TCPServersLoadBalancer{}
|
||||
lb.SetDefaults()
|
||||
|
||||
configuration.Services[item.Name] = &dynamic.TCPService{
|
||||
LoadBalancer: lb,
|
||||
}
|
||||
}
|
||||
|
||||
for name, service := range configuration.Services {
|
||||
ctxSvc := log.With(ctx, log.Str(log.ServiceName, name))
|
||||
err := p.addServerTCP(ctxSvc, item, service.LoadBalancer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Provider) buildServiceConfiguration(ctx context.Context, item itemData, configuration *dynamic.HTTPConfiguration) error {
|
||||
if len(configuration.Services) == 0 {
|
||||
configuration.Services = make(map[string]*dynamic.Service)
|
||||
|
||||
lb := &dynamic.ServersLoadBalancer{}
|
||||
lb.SetDefaults()
|
||||
|
||||
configuration.Services[item.Name] = &dynamic.Service{
|
||||
LoadBalancer: lb,
|
||||
}
|
||||
}
|
||||
|
||||
for name, service := range configuration.Services {
|
||||
ctxSvc := log.With(ctx, log.Str(log.ServiceName, name))
|
||||
err := p.addServer(ctxSvc, item, service.LoadBalancer)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Provider) addServerTCP(ctx context.Context, item itemData, loadBalancer *dynamic.TCPServersLoadBalancer) error {
|
||||
if loadBalancer == nil {
|
||||
return errors.New("load-balancer is not defined")
|
||||
}
|
||||
|
||||
if len(loadBalancer.Servers) == 0 {
|
||||
loadBalancer.Servers = []dynamic.TCPServer{{}}
|
||||
}
|
||||
|
||||
var port string
|
||||
if item.Port != "" {
|
||||
port = item.Port
|
||||
loadBalancer.Servers[0].Port = ""
|
||||
}
|
||||
|
||||
if port == "" {
|
||||
return errors.New("port is missing")
|
||||
}
|
||||
|
||||
loadBalancer.Servers[0].Address = net.JoinHostPort(item.Address, port)
|
||||
return nil
|
||||
}
|
||||
|
||||
func (p *Provider) addServer(ctx context.Context, item itemData, loadBalancer *dynamic.ServersLoadBalancer) error {
|
||||
if loadBalancer == nil {
|
||||
return errors.New("load-balancer is not defined")
|
||||
}
|
||||
|
||||
var port string
|
||||
if len(loadBalancer.Servers) > 0 {
|
||||
port = loadBalancer.Servers[0].Port
|
||||
}
|
||||
|
||||
if len(loadBalancer.Servers) == 0 {
|
||||
server := dynamic.Server{}
|
||||
server.SetDefaults()
|
||||
|
||||
loadBalancer.Servers = []dynamic.Server{server}
|
||||
}
|
||||
|
||||
if item.Port != "" {
|
||||
port = item.Port
|
||||
loadBalancer.Servers[0].Port = ""
|
||||
}
|
||||
|
||||
if port == "" {
|
||||
return errors.New("port is missing")
|
||||
}
|
||||
|
||||
loadBalancer.Servers[0].URL = fmt.Sprintf("%s://%s", loadBalancer.Servers[0].Scheme, net.JoinHostPort(item.Address, port))
|
||||
loadBalancer.Servers[0].Scheme = ""
|
||||
|
||||
return nil
|
||||
}
|
Loading…
Add table
Add a link
Reference in a new issue