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Add flush interval option on backend

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SALLEYRON Julien 2018-10-29 18:42:03 +01:00 committed by Traefiker Bot
parent c6dd1dccc3
commit e6e9a86919
43 changed files with 420 additions and 85 deletions
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0
autogen/.placeholder
View file

49
autogen/gentemplates/gen.go
View file

@ -143,6 +143,14 @@ var _templatesConsul_catalogTmpl = []byte(`[backends]
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $service.TraefikLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $service.TraefikLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]
@ -620,6 +628,12 @@ var _templatesDockerTmpl = []byte(`{{$backendServers := .Servers}}
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]
@ -948,6 +962,12 @@ var _templatesEcsTmpl = []byte(`[backends]
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $firstInstance.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $serviceName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $firstInstance.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $serviceName }}".loadBalancer]
@ -1258,6 +1278,11 @@ var _templatesKubernetesTmpl = []byte(`[backends]
expression = "{{ $backend.CircuitBreaker.Expression }}"
{{end}}
{{if $backend.ResponseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $backend.responseForwarding.FlushInterval }}"
{{end}}
[backends."{{ $backendName }}".loadBalancer]
method = "{{ $backend.LoadBalancer.Method }}"
sticky = {{ $backend.LoadBalancer.Sticky }}
@ -1493,6 +1518,12 @@ var _templatesKvTmpl = []byte(`[backends]
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend }}
{{if $responseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.flushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend }}
{{if $loadBalancer }}
[backends."{{ $backendName }}".loadBalancer]
@ -1863,6 +1894,12 @@ var _templatesMarathonTmpl = []byte(`{{ $apps := .Applications }}
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $app.SegmentLabels }}
{{if $responseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $app.SegmentLabels }}
{{if $loadBalancer }}
[backends."{{ $backendName }}".loadBalancer]
@ -2177,6 +2214,12 @@ var _templatesMesosTmpl = []byte(`[backends]
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $app.TraefikLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $app.TraefikLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]
@ -2545,6 +2588,12 @@ var _templatesRancherTmpl = []byte(`{{ $backendServers := .Backends }}
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]

1
docs/configuration/backends/consulcatalog.md
View file

@ -105,6 +105,7 @@ Additional settings can be defined using Consul Catalog tags.
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `<prefix>.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend. ex: `NetworkErrorRatio() > 0.` |
| `<prefix>.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `<prefix>.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `<prefix>.backend.healthcheck.interval=1s` | Defines the health check interval. |
| `<prefix>.backend.healthcheck.port=8080` | Sets a different port for the health check. |

1
docs/configuration/backends/docker.md
View file

@ -225,6 +225,7 @@ Labels can be used on containers to override default behavior.
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |

1
docs/configuration/backends/ecs.md
View file

@ -150,6 +150,7 @@ Labels can be used on task containers to override default behaviour:
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |

3
docs/configuration/backends/file.md
View file

@ -24,6 +24,9 @@ Traefik can be configured with a file.
[backends.backend1.circuitBreaker]
expression = "NetworkErrorRatio() > 0.5"
[backends.backend1.responseForwarding]
flushInterval = "10ms"
[backends.backend1.loadBalancer]
method = "drr"
[backends.backend1.loadBalancer.stickiness]

1
docs/configuration/backends/kubernetes.md
View file

@ -277,6 +277,7 @@ The following annotations are applicable on the Service object associated with a
| `traefik.backend.loadbalancer.sticky: "true"` | Enable backend sticky sessions (DEPRECATED). |
| `traefik.ingress.kubernetes.io/affinity: "true"` | Enable backend sticky sessions. |
| `traefik.ingress.kubernetes.io/circuit-breaker-expression: <expression>` | Set the circuit breaker expression for the backend. |
| `traefik.ingress.kubernetes.io/responseforwarding-flushinterval: "10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.ingress.kubernetes.io/load-balancer-method: drr` | Override the default `wrr` load balancer algorithm. |
| `traefik.ingress.kubernetes.io/max-conn-amount: "10"` | Sets the maximum number of simultaneous connections to the backend.<br>Must be used in conjunction with the label below to take effect. |
| `traefik.ingress.kubernetes.io/max-conn-extractor-func: client.ip` | Set the function to be used against the request to determine what to limit maximum connections to the backend by.<br>Must be used in conjunction with the above label to take effect. |

1
docs/configuration/backends/marathon.md
View file

@ -208,6 +208,7 @@ The following labels can be defined on Marathon applications. They adjust the be
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |

1
docs/configuration/backends/mesos.md
View file

@ -122,6 +122,7 @@ The following labels can be defined on Mesos tasks. They adjust the behavior for
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. (Default: 30s) |
| `traefik.backend.healthcheck.scheme=http` | Overrides the server URL scheme. |

1
docs/configuration/backends/rancher.md
View file

@ -152,6 +152,7 @@ Labels can be used on task containers to override default behavior:
| `traefik.backend.buffering.memResponseBodyBytes=0` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.buffering.retryExpression=EXPR` | See [buffering](/configuration/commons/#buffering) section. |
| `traefik.backend.circuitbreaker.expression=EXPR` | Creates a [circuit breaker](/basics/#backends) to be used against the backend |
| `traefik.backend.responseForwarding.flushInterval=10ms` | Defines the interval between two flushes when forwarding response from backend to client. |
| `traefik.backend.healthcheck.path=/health` | Enables health check for the backend, hitting the container at `path`. |
| `traefik.backend.healthcheck.interval=1s` | Defines the health check interval. |
| `traefik.backend.healthcheck.port=8080` | Sets a different port for the health check. |

31
integration/fixtures/grpc/config_with_flush.toml Normal file
View file

@ -0,0 +1,31 @@
defaultEntryPoints = ["https"]
rootCAs = [ """{{ .CertContent }}""" ]
[entryPoints]
[entryPoints.https]
address = ":4443"
[entryPoints.https.tls]
[[entryPoints.https.tls.certificates]]
certFile = """{{ .CertContent }}"""
keyFile = """{{ .KeyContent }}"""
[api]
[file]
[backends]
[backends.backend1]
[backends.backend1.responseForwarding]
flushInterval="1ms"
[backends.backend1.servers.server1]
url = "https://127.0.0.1:{{ .GRPCServerPort }}"
weight = 1
[frontends]
[frontends.frontend1]
backend = "backend1"
[frontends.frontend1.routes.test_1]
rule = "Host:127.0.0.1"

61
integration/grpc_test.go
View file

@ -356,3 +356,64 @@ func (s *GRPCSuite) TestGRPCBuffer(c *check.C) {
})
c.Assert(err, check.IsNil)
}
func (s *GRPCSuite) TestGRPCBufferWithFlushInterval(c *check.C) {
stopStreamExample := make(chan bool)
defer func() { stopStreamExample <- true }()
lis, err := net.Listen("tcp", ":0")
c.Assert(err, check.IsNil)
_, port, err := net.SplitHostPort(lis.Addr().String())
c.Assert(err, check.IsNil)
go func() {
err := startGRPCServer(lis, &myserver{
stopStreamExample: stopStreamExample,
})
c.Log(err)
c.Assert(err, check.IsNil)
}()
file := s.adaptFile(c, "fixtures/grpc/config_with_flush.toml", struct {
CertContent string
KeyContent string
GRPCServerPort string
}{
CertContent: string(LocalhostCert),
KeyContent: string(LocalhostKey),
GRPCServerPort: port,
})
defer os.Remove(file)
cmd, display := s.traefikCmd(withConfigFile(file))
defer display(c)
err = cmd.Start()
c.Assert(err, check.IsNil)
defer cmd.Process.Kill()
// wait for Traefik
err = try.GetRequest("http://127.0.0.1:8080/api/providers", 1*time.Second, try.BodyContains("Host:127.0.0.1"))
c.Assert(err, check.IsNil)
var client helloworld.Greeter_StreamExampleClient
client, closer, err := callStreamExampleClientGRPC()
defer closer()
c.Assert(err, check.IsNil)
received := make(chan bool)
go func() {
tr, err := client.Recv()
c.Assert(err, check.IsNil)
c.Assert(len(tr.Data), check.Equals, 512)
received <- true
}()
err = try.Do(time.Millisecond*100, func() error {
select {
case <-received:
return nil
default:
return errors.New("failed to receive stream data")
}
})
c.Assert(err, check.IsNil)
}

1
provider/consulcatalog/config.go
View file

@ -34,6 +34,7 @@ func (p *Provider) buildConfigurationV2(catalog []catalogUpdate) *types.Configur
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getServer": p.getServer,
// Frontend functions

4
provider/consulcatalog/config_test.go
View file

@ -405,6 +405,7 @@ func TestProviderBuildConfiguration(t *testing.T) {
label.TraefikBackend + "=foobar",
label.TraefikBackendCircuitBreakerExpression + "=NetworkErrorRatio() > 0.5",
label.TraefikBackendResponseForwardingFlushInterval + "=10ms",
label.TraefikBackendHealthCheckPath + "=/health",
label.TraefikBackendHealthCheckScheme + "=http",
label.TraefikBackendHealthCheckPort + "=880",
@ -673,6 +674,9 @@ func TestProviderBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

1
provider/docker/config.go
View file

@ -38,6 +38,7 @@ func (p *Provider) buildConfigurationV2(containersInspected []dockerData) *types
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getCircuitBreaker": label.GetCircuitBreaker,
"getLoadBalancer": label.GetLoadBalancer,

4
provider/docker/config_container_docker_test.go
View file

@ -434,6 +434,7 @@ func TestDockerBuildConfiguration(t *testing.T) {
label.TraefikBackend: "foobar",
label.TraefikBackendCircuitBreakerExpression: "NetworkErrorRatio() > 0.5",
label.TraefikBackendResponseForwardingFlushInterval: "10ms",
label.TraefikBackendHealthCheckScheme: "http",
label.TraefikBackendHealthCheckPath: "/health",
label.TraefikBackendHealthCheckPort: "880",
@ -666,6 +667,9 @@ func TestDockerBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

4
provider/docker/config_container_swarm_test.go
View file

@ -383,6 +383,7 @@ func TestSwarmBuildConfiguration(t *testing.T) {
label.TraefikBackend: "foobar",
label.TraefikBackendCircuitBreakerExpression: "NetworkErrorRatio() > 0.5",
label.TraefikBackendResponseForwardingFlushInterval: "10ms",
label.TraefikBackendHealthCheckScheme: "http",
label.TraefikBackendHealthCheckPath: "/health",
label.TraefikBackendHealthCheckPort: "880",
@ -584,6 +585,9 @@ func TestSwarmBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

2
provider/ecs/config.go
View file

@ -28,6 +28,8 @@ func (p *Provider) buildConfigurationV2(instances []ecsInstance) (*types.Configu
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getServers": getServers,
// Frontend functions

4
provider/ecs/config_test.go
View file

@ -342,6 +342,7 @@ func TestBuildConfiguration(t *testing.T) {
label.TraefikBackend: aws.String("foobar"),
label.TraefikBackendCircuitBreakerExpression: aws.String("NetworkErrorRatio() > 0.5"),
label.TraefikBackendResponseForwardingFlushInterval: aws.String("10ms"),
label.TraefikBackendHealthCheckScheme: aws.String("http"),
label.TraefikBackendHealthCheckPath: aws.String("/health"),
label.TraefikBackendHealthCheckPort: aws.String("880"),
@ -458,6 +459,9 @@ func TestBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

1
provider/kubernetes/annotations.go
View file

@ -40,6 +40,7 @@ const (
annotationKubernetesRateLimit = "ingress.kubernetes.io/rate-limit"
annotationKubernetesErrorPages = "ingress.kubernetes.io/error-pages"
annotationKubernetesBuffering = "ingress.kubernetes.io/buffering"
annotationKubernetesResponseForwardingFlushInterval = "ingress.kubernetes.io/responseforwarding-flushinterval"
annotationKubernetesAppRoot = "ingress.kubernetes.io/app-root"
annotationKubernetesServiceWeights = "ingress.kubernetes.io/service-weights"
annotationKubernetesRequestModifier = "ingress.kubernetes.io/request-modifier"

7
provider/kubernetes/builder_configuration_test.go
View file

@ -93,6 +93,13 @@ func circuitBreaker(exp string) func(*types.Backend) {
}
}
func responseForwarding(interval string) func(*types.Backend) {
return func(b *types.Backend) {
b.ResponseForwarding = &types.ResponseForwarding{}
b.ResponseForwarding.FlushInterval = interval
}
}
func buffering(opts ...func(*types.Buffering)) func(*types.Backend) {
return func(b *types.Backend) {
if b.Buffering == nil {

13
provider/kubernetes/kubernetes.go
View file

@ -337,6 +337,7 @@ func (p *Provider) loadIngresses(k8sClient Client) (*types.Configuration, error)
templateObjects.Backends[baseName].LoadBalancer = getLoadBalancer(service)
templateObjects.Backends[baseName].MaxConn = getMaxConn(service)
templateObjects.Backends[baseName].Buffering = getBuffering(service)
templateObjects.Backends[baseName].ResponseForwarding = getResponseForwarding(service)
protocol := label.DefaultProtocol
@ -494,6 +495,7 @@ func (p *Provider) addGlobalBackend(cl Client, i *extensionsv1beta1.Ingress, tem
templateObjects.Backends[defaultBackendName].LoadBalancer = getLoadBalancer(service)
templateObjects.Backends[defaultBackendName].MaxConn = getMaxConn(service)
templateObjects.Backends[defaultBackendName].Buffering = getBuffering(service)
templateObjects.Backends[defaultBackendName].ResponseForwarding = getResponseForwarding(service)
endpoints, exists, err := cl.GetEndpoints(service.Namespace, service.Name)
if err != nil {
@ -951,6 +953,17 @@ func getWhiteList(i *extensionsv1beta1.Ingress) *types.WhiteList {
}
}
func getResponseForwarding(service *corev1.Service) *types.ResponseForwarding {
flushIntervalValue := getStringValue(service.Annotations, annotationKubernetesResponseForwardingFlushInterval, "")
if len(flushIntervalValue) == 0 {
return nil
}
return &types.ResponseForwarding{
FlushInterval: flushIntervalValue,
}
}
func getBuffering(service *corev1.Service) *types.Buffering {
var buffering *types.Buffering

32
provider/kubernetes/kubernetes_test.go
View file

@ -908,6 +908,9 @@ func TestServiceAnnotations(t *testing.T) {
iRule(
iHost("max-conn"),
iPaths(onePath(iBackend("service4", intstr.FromInt(804))))),
iRule(
iHost("flush"),
iPaths(onePath(iBackend("service5", intstr.FromInt(805))))),
),
),
}
@ -958,6 +961,15 @@ retryexpression: IsNetworkError() && Attempts() <= 2
clusterIP("10.0.0.4"),
sPorts(sPort(804, "http"))),
),
buildService(
sName("service5"),
sNamespace("testing"),
sUID("5"),
sAnnotation(annotationKubernetesResponseForwardingFlushInterval, "10ms"),
sSpec(
clusterIP("10.0.0.5"),
sPorts(sPort(80, ""))),
),
}
endpoints := []*corev1.Endpoints{
@ -1005,6 +1017,17 @@ retryexpression: IsNetworkError() && Attempts() <= 2
eAddresses(eAddress("10.4.0.2")),
ePorts(ePort(8080, "http"))),
),
buildEndpoint(
eNamespace("testing"),
eName("service5"),
eUID("5"),
subset(
eAddresses(eAddress("10.4.0.1")),
ePorts(ePort(8080, "http"))),
subset(
eAddresses(eAddress("10.4.0.2")),
ePorts(ePort(8080, "http"))),
),
}
watchChan := make(chan interface{})
@ -1028,6 +1051,11 @@ retryexpression: IsNetworkError() && Attempts() <= 2
lbMethod("drr"),
circuitBreaker("NetworkErrorRatio() > 0.5"),
),
backend("flush",
servers(),
lbMethod("wrr"),
responseForwarding("10ms"),
),
backend("bar",
servers(
server("http://10.15.0.1:8080", weight(1)),
@ -1073,6 +1101,10 @@ retryexpression: IsNetworkError() && Attempts() <= 2
passHostHeader(),
routes(
route("max-conn", "Host:max-conn"))),
frontend("flush",
passHostHeader(),
routes(
route("flush", "Host:flush"))),
),
)

1
provider/kv/keynames.go
View file

@ -3,6 +3,7 @@ package kv
const (
pathBackends = "/backends/"
pathBackendCircuitBreakerExpression = "/circuitbreaker/expression"
pathBackendResponseForwardingFlushInterval = "/responseforwarding/flushinterval"
pathBackendHealthCheckScheme = "/healthcheck/scheme"
pathBackendHealthCheckPath = "/healthcheck/path"
pathBackendHealthCheckPort = "/healthcheck/port"

15
provider/kv/kv_config.go
View file

@ -59,6 +59,7 @@ func (p *Provider) buildConfiguration() *types.Configuration {
// Backend functions
"getServers": p.getServers,
"getCircuitBreaker": p.getCircuitBreaker,
"getResponseForwarding": p.getResponseForwarding,
"getLoadBalancer": p.getLoadBalancer,
"getMaxConn": p.getMaxConn,
"getHealthCheck": p.getHealthCheck,
@ -269,6 +270,20 @@ func (p *Provider) getLoadBalancer(rootPath string) *types.LoadBalancer {
return lb
}
func (p *Provider) getResponseForwarding(rootPath string) *types.ResponseForwarding {
if !p.has(rootPath, pathBackendResponseForwardingFlushInterval) {
return nil
}
value := p.get("", rootPath, pathBackendResponseForwardingFlushInterval)
if len(value) == 0 {
return nil
}
return &types.ResponseForwarding{
FlushInterval: value,
}
}
func (p *Provider) getCircuitBreaker(rootPath string) *types.CircuitBreaker {
if !p.has(rootPath, pathBackendCircuitBreakerExpression) {
return nil

2
provider/label/names.go
View file

@ -29,6 +29,7 @@ const (
SuffixBackendMaxConnAmount = "backend.maxconn.amount"
SuffixBackendMaxConnExtractorFunc = "backend.maxconn.extractorfunc"
SuffixBackendBuffering = "backend.buffering"
SuffixBackendResponseForwardingFlushInterval = "backend.responseForwarding.flushInterval"
SuffixBackendBufferingMaxRequestBodyBytes = SuffixBackendBuffering + ".maxRequestBodyBytes"
SuffixBackendBufferingMemRequestBodyBytes = SuffixBackendBuffering + ".memRequestBodyBytes"
SuffixBackendBufferingMaxResponseBodyBytes = SuffixBackendBuffering + ".maxResponseBodyBytes"
@ -131,6 +132,7 @@ const (
TraefikBackendMaxConnAmount = Prefix + SuffixBackendMaxConnAmount
TraefikBackendMaxConnExtractorFunc = Prefix + SuffixBackendMaxConnExtractorFunc
TraefikBackendBuffering = Prefix + SuffixBackendBuffering
TraefikBackendResponseForwardingFlushInterval = Prefix + SuffixBackendResponseForwardingFlushInterval
TraefikBackendBufferingMaxRequestBodyBytes = Prefix + SuffixBackendBufferingMaxRequestBodyBytes
TraefikBackendBufferingMemRequestBodyBytes = Prefix + SuffixBackendBufferingMemRequestBodyBytes
TraefikBackendBufferingMaxResponseBodyBytes = Prefix + SuffixBackendBufferingMaxResponseBodyBytes

13
provider/label/partial.go
View file

@ -354,6 +354,19 @@ func GetHealthCheck(labels map[string]string) *types.HealthCheck {
}
}
// GetResponseForwarding Create ResponseForwarding from labels
func GetResponseForwarding(labels map[string]string) *types.ResponseForwarding {
if !HasPrefix(labels, TraefikBackendResponseForwardingFlushInterval) {
return nil
}
value := GetStringValue(labels, TraefikBackendResponseForwardingFlushInterval, "0")
return &types.ResponseForwarding{
FlushInterval: value,
}
}
// GetBuffering Create buffering from labels
func GetBuffering(labels map[string]string) *types.Buffering {
if !HasPrefix(labels, TraefikBackendBuffering) {

1
provider/marathon/config.go
View file

@ -38,6 +38,7 @@ func (p *Provider) buildConfigurationV2(applications *marathon.Applications) *ty
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getServers": p.getServers,
// Frontend functions

4
provider/marathon/config_test.go
View file

@ -357,6 +357,7 @@ func TestBuildConfiguration(t *testing.T) {
withLabel(label.TraefikBackend, "foobar"),
withLabel(label.TraefikBackendCircuitBreakerExpression, "NetworkErrorRatio() > 0.5"),
withLabel(label.TraefikBackendResponseForwardingFlushInterval, "10ms"),
withLabel(label.TraefikBackendHealthCheckScheme, "http"),
withLabel(label.TraefikBackendHealthCheckPath, "/health"),
withLabel(label.TraefikBackendHealthCheckPort, "880"),
@ -586,6 +587,9 @@ func TestBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

1
provider/mesos/config.go
View file

@ -35,6 +35,7 @@ func (p *Provider) buildConfigurationV2(tasks []state.Task) *types.Configuration
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getServers": p.getServers,
"getHost": p.getHost,
"getServerPort": p.getServerPort,

4
provider/mesos/config_test.go
View file

@ -314,6 +314,7 @@ func TestBuildConfiguration(t *testing.T) {
withLabel(label.TraefikBackend, "foobar"),
withLabel(label.TraefikBackendCircuitBreakerExpression, "NetworkErrorRatio() > 0.5"),
withLabel(label.TraefikBackendResponseForwardingFlushInterval, "10ms"),
withLabel(label.TraefikBackendHealthCheckScheme, "http"),
withLabel(label.TraefikBackendHealthCheckPath, "/health"),
withLabel(label.TraefikBackendHealthCheckPort, "880"),
@ -546,6 +547,9 @@ func TestBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Stickiness: &types.Stickiness{

1
provider/rancher/config.go
View file

@ -25,6 +25,7 @@ func (p *Provider) buildConfigurationV2(services []rancherData) *types.Configura
"getMaxConn": label.GetMaxConn,
"getHealthCheck": label.GetHealthCheck,
"getBuffering": label.GetBuffering,
"getResponseForwarding": label.GetResponseForwarding,
"getServers": getServers,
// Frontend functions

4
provider/rancher/config_test.go
View file

@ -41,6 +41,7 @@ func TestProviderBuildConfiguration(t *testing.T) {
label.TraefikBackend: "foobar",
label.TraefikBackendCircuitBreakerExpression: "NetworkErrorRatio() > 0.5",
label.TraefikBackendResponseForwardingFlushInterval: "10ms",
label.TraefikBackendHealthCheckScheme: "http",
label.TraefikBackendHealthCheckPath: "/health",
label.TraefikBackendHealthCheckPort: "880",
@ -277,6 +278,9 @@ func TestProviderBuildConfiguration(t *testing.T) {
CircuitBreaker: &types.CircuitBreaker{
Expression: "NetworkErrorRatio() > 0.5",
},
ResponseForwarding: &types.ResponseForwarding{
FlushInterval: "10ms",
},
LoadBalancer: &types.LoadBalancer{
Method: "drr",
Sticky: true,

14
server/server_configuration.go
View file

@ -11,6 +11,7 @@ import (
"strings"
"time"
"github.com/containous/flaeg/parse"
"github.com/containous/mux"
"github.com/containous/traefik/configuration"
"github.com/containous/traefik/healthcheck"
@ -163,7 +164,7 @@ func (s *Server) loadFrontendConfig(
postConfigs = append(postConfigs, postConfig)
}
fwd, err := s.buildForwarder(entryPointName, entryPoint, frontendName, frontend, responseModifier)
fwd, err := s.buildForwarder(entryPointName, entryPoint, frontendName, frontend, responseModifier, backend)
if err != nil {
return nil, fmt.Errorf("failed to create the forwarder for frontend %s: %v", frontendName, err)
}
@ -216,7 +217,7 @@ func (s *Server) loadFrontendConfig(
func (s *Server) buildForwarder(entryPointName string, entryPoint *configuration.EntryPoint,
frontendName string, frontend *types.Frontend,
responseModifier modifyResponse) (http.Handler, error) {
responseModifier modifyResponse, backend *types.Backend) (http.Handler, error) {
roundTripper, err := s.getRoundTripper(entryPointName, frontend.PassTLSCert, entryPoint.TLS)
if err != nil {
@ -228,6 +229,14 @@ func (s *Server) buildForwarder(entryPointName string, entryPoint *configuration
return nil, fmt.Errorf("error creating rewriter for frontend %s: %v", frontendName, err)
}
var flushInterval parse.Duration
if backend.ResponseForwarding != nil {
err := flushInterval.Set(backend.ResponseForwarding.FlushInterval)
if err != nil {
return nil, fmt.Errorf("error creating flush interval for frontend %s: %v", frontendName, err)
}
}
var fwd http.Handler
fwd, err = forward.New(
forward.Stream(true),
@ -236,6 +245,7 @@ func (s *Server) buildForwarder(entryPointName string, entryPoint *configuration
forward.Rewriter(rewriter),
forward.ResponseModifier(responseModifier),
forward.BufferPool(s.bufferPool),
forward.StreamingFlushInterval(time.Duration(flushInterval)),
forward.WebsocketConnectionClosedHook(func(req *http.Request, conn net.Conn) {
server := req.Context().Value(http.ServerContextKey).(*http.Server)
if server != nil {

8
templates/consul_catalog.tmpl
View file

@ -8,6 +8,14 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $service.TraefikLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $service.TraefikLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]

6
templates/docker.tmpl
View file

@ -9,6 +9,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]

6
templates/ecs.tmpl
View file

@ -8,6 +8,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $firstInstance.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $serviceName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $firstInstance.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $serviceName }}".loadBalancer]

5
templates/kubernetes.tmpl
View file

@ -8,6 +8,11 @@
expression = "{{ $backend.CircuitBreaker.Expression }}"
{{end}}
{{if $backend.ResponseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $backend.responseForwarding.FlushInterval }}"
{{end}}
[backends."{{ $backendName }}".loadBalancer]
method = "{{ $backend.LoadBalancer.Method }}"
sticky = {{ $backend.LoadBalancer.Sticky }}

6
templates/kv.tmpl
View file

@ -8,6 +8,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend }}
{{if $responseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.flushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend }}
{{if $loadBalancer }}
[backends."{{ $backendName }}".loadBalancer]

6
templates/marathon.tmpl
View file

@ -11,6 +11,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $app.SegmentLabels }}
{{if $responseForwarding }}
[backends."{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $app.SegmentLabels }}
{{if $loadBalancer }}
[backends."{{ $backendName }}".loadBalancer]

6
templates/mesos.tmpl
View file

@ -11,6 +11,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $app.TraefikLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $app.TraefikLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]

6
templates/rancher.tmpl
View file

@ -10,6 +10,12 @@
expression = "{{ $circuitBreaker.Expression }}"
{{end}}
{{ $responseForwarding := getResponseForwarding $backend.SegmentLabels }}
{{if $responseForwarding }}
[backends."backend-{{ $backendName }}".responseForwarding]
flushInterval = "{{ $responseForwarding.FlushInterval }}"
{{end}}
{{ $loadBalancer := getLoadBalancer $backend.SegmentLabels }}
{{if $loadBalancer }}
[backends."backend-{{ $backendName }}".loadBalancer]

6
types/types.go
View file

@ -28,6 +28,12 @@ type Backend struct {
MaxConn *MaxConn `json:"maxConn,omitempty"`
HealthCheck *HealthCheck `json:"healthCheck,omitempty"`
Buffering *Buffering `json:"buffering,omitempty"`
ResponseForwarding *ResponseForwarding `json:"forwardingResponse,omitempty"`
}
// ResponseForwarding holds configuration for the forward of the response
type ResponseForwarding struct {
FlushInterval string `json:"flushInterval,omitempty"`
}
// MaxConn holds maximum connection configuration