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UDP support

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Co-authored-by: Julien Salleyron <julien.salleyron@gmail.com>
This commit is contained in:
mpl 2020-02-11 01:26:04 +01:00 • committed by GitHub
parent 8988c8f9af
commit 115d42e0f0
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GPG key ID: 4AEE18F83AFDEB23
72 changed files with 4730 additions and 321 deletions
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2
pkg/server/service/tcp/service.go
View file

@ -81,7 +81,7 @@ func (m *Manager) BuildTCP(rootCtx context.Context, serviceName string) (tcp.Han
}
return loadBalancer, nil
default:
err := fmt.Errorf("the service %q doesn't have any TCP load balancer", serviceQualifiedName)
err := fmt.Errorf("the service %q does not have any type defined", serviceQualifiedName)
conf.AddError(err, true)
return nil, err
}

2
pkg/server/service/tcp/service_test.go
View file

@ -33,7 +33,7 @@ func TestManager_BuildTCP(t *testing.T) {
TCPService: &dynamic.TCPService{},
},
},
expectedError: `the service "test" doesn't have any TCP load balancer`,
expectedError: `the service "test" does not have any type defined`,
},
{
desc: "no such host, server is skipped, error is logged",

81
pkg/server/service/udp/service.go Normal file
View file

@ -0,0 +1,81 @@
package udp
import (
"context"
"errors"
"fmt"
"net"
"github.com/containous/traefik/v2/pkg/config/runtime"
"github.com/containous/traefik/v2/pkg/log"
"github.com/containous/traefik/v2/pkg/server/provider"
"github.com/containous/traefik/v2/pkg/udp"
)
// Manager handles UDP services creation.
type Manager struct {
configs map[string]*runtime.UDPServiceInfo
}
// NewManager creates a new manager
func NewManager(conf *runtime.Configuration) *Manager {
return &Manager{
configs: conf.UDPServices,
}
}
// BuildUDP creates the UDP handler for the given service name.
func (m *Manager) BuildUDP(rootCtx context.Context, serviceName string) (udp.Handler, error) {
serviceQualifiedName := provider.GetQualifiedName(rootCtx, serviceName)
ctx := provider.AddInContext(rootCtx, serviceQualifiedName)
ctx = log.With(ctx, log.Str(log.ServiceName, serviceName))
conf, ok := m.configs[serviceQualifiedName]
if !ok {
return nil, fmt.Errorf("the udp service %q does not exist", serviceQualifiedName)
}
if conf.LoadBalancer != nil && conf.Weighted != nil {
err := errors.New("cannot create service: multi-types service not supported, consider declaring two different pieces of service instead")
conf.AddError(err, true)
return nil, err
}
logger := log.FromContext(ctx)
switch {
case conf.LoadBalancer != nil:
loadBalancer := udp.NewWRRLoadBalancer()
for name, server := range conf.LoadBalancer.Servers {
if _, _, err := net.SplitHostPort(server.Address); err != nil {
logger.Errorf("In udp service %q: %v", serviceQualifiedName, err)
continue
}
handler, err := udp.NewProxy(server.Address)
if err != nil {
logger.Errorf("In udp service %q server %q: %v", serviceQualifiedName, server.Address, err)
continue
}
loadBalancer.AddServer(handler)
logger.WithField(log.ServerName, name).Debugf("Creating UDP server %d at %s", name, server.Address)
}
return loadBalancer, nil
case conf.Weighted != nil:
loadBalancer := udp.NewWRRLoadBalancer()
for _, service := range conf.Weighted.Services {
handler, err := m.BuildUDP(rootCtx, service.Name)
if err != nil {
logger.Errorf("In udp service %q: %v", serviceQualifiedName, err)
return nil, err
}
loadBalancer.AddWeightedServer(handler, service.Weight)
}
return loadBalancer, nil
default:
err := fmt.Errorf("the udp service %q does not have any type defined", serviceQualifiedName)
conf.AddError(err, true)
return nil, err
}
}

201
pkg/server/service/udp/service_test.go Normal file
View file

@ -0,0 +1,201 @@
package udp
import (
"context"
"testing"
"github.com/containous/traefik/v2/pkg/config/dynamic"
"github.com/containous/traefik/v2/pkg/config/runtime"
"github.com/containous/traefik/v2/pkg/server/provider"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestManager_BuildUDP(t *testing.T) {
testCases := []struct {
desc string
serviceName string
configs map[string]*runtime.UDPServiceInfo
providerName string
expectedError string
}{
{
desc: "without configuration",
serviceName: "test",
configs: nil,
expectedError: `the udp service "test" does not exist`,
},
{
desc: "missing lb configuration",
serviceName: "test",
configs: map[string]*runtime.UDPServiceInfo{
"test": {
UDPService: &dynamic.UDPService{},
},
},
expectedError: `the udp service "test" does not have any type defined`,
},
{
desc: "no such host, server is skipped, error is logged",
serviceName: "test",
configs: map[string]*runtime.UDPServiceInfo{
"test": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{Address: "test:31"},
},
},
},
},
},
},
{
desc: "invalid IP address, server is skipped, error is logged",
serviceName: "test",
configs: map[string]*runtime.UDPServiceInfo{
"test": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{Address: "foobar"},
},
},
},
},
},
},
{
desc: "Simple service name",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{},
},
},
},
},
{
desc: "Service name with provider",
serviceName: "serviceName@provider-1",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{},
},
},
},
},
{
desc: "Service name with provider in context",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{},
},
},
},
providerName: "provider-1",
},
{
desc: "Server with correct host:port as address",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{
Address: "foobar.com:80",
},
},
},
},
},
},
providerName: "provider-1",
},
{
desc: "Server with correct ip:port as address",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{
Address: "192.168.0.12:80",
},
},
},
},
},
},
providerName: "provider-1",
},
{
desc: "missing port in address with hostname, server is skipped, error is logged",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{
Address: "foobar.com",
},
},
},
},
},
},
providerName: "provider-1",
},
{
desc: "missing port in address with ip, server is skipped, error is logged",
serviceName: "serviceName",
configs: map[string]*runtime.UDPServiceInfo{
"serviceName@provider-1": {
UDPService: &dynamic.UDPService{
LoadBalancer: &dynamic.UDPServersLoadBalancer{
Servers: []dynamic.UDPServer{
{
Address: "192.168.0.12",
},
},
},
},
},
},
providerName: "provider-1",
},
}
for _, test := range testCases {
test := test
t.Run(test.desc, func(t *testing.T) {
t.Parallel()
manager := NewManager(&runtime.Configuration{
UDPServices: test.configs,
})
ctx := context.Background()
if len(test.providerName) > 0 {
ctx = provider.AddInContext(ctx, "foobar@"+test.providerName)
}
handler, err := manager.BuildUDP(ctx, test.serviceName)
if test.expectedError != "" {
assert.EqualError(t, err, test.expectedError)
require.Nil(t, handler)
} else {
assert.Nil(t, err)
require.NotNil(t, handler)
}
})
}
}