# Compute V1 Client - Class WeightedBackendService (2.10.0)

2.10.0 (latest) 2.9.0 2.8.0 2.7.0 2.6.0 2.5.0 2.4.0 2.3.0 2.2.0 2.1.1 2.0.0 1.36.0 1.35.0 1.34.0 1.33.0 1.32.0 1.31.0 1.30.0 1.29.0 1.28.0 1.27.0 1.26.0 1.25.0 1.24.0 1.23.0 1.22.1 1.21.0 1.20.0 1.19.0 1.18.1 1.17.0 1.16.2 1.14.0 1.13.0 1.12.1 1.11.1 1.10.1 1.9.1 1.8.3 1.7.1 1.6.1 1.5.0 Reference documentation and code samples for the Compute V1 Client class WeightedBackendService.

In contrast to a single BackendService in
HttpRouteAction to which all matching traffic is directed to,WeightedBackendService allows traffic to be split across
multiple backend services. The volume of traffic for each
backend service is proportional to the weight specified
in each WeightedBackendService

Generated from protobuf message `google.cloud.compute.v1.WeightedBackendService`

## Namespace

Google \\ Cloud \\ Compute \\ V1

## Methods

### __construct

Constructor.

| **Parameters** ||
|---|---|
| **Name** | **Description** |
| `data` | `array` Optional. Data for populating the Message object. |
| `↳ backend_service` | `string` The full or partial URL to the default BackendService resource. Before forwarding the request to backendService, the load balancer applies any relevant headerActions specified as part of thisbackendServiceWeight. |
| `↳ header_action` | `https://docs.cloud.google.com/php/docs/reference/cloud-compute/latest/V1.HttpHeaderAction` Specifies changes to request and response headers that need to take effect for the selected backendService. headerAction specified here take effect beforeheaderAction in the enclosing HttpRouteRule,PathMatcher and UrlMap. headerAction is not supported for load balancers that have their loadBalancingScheme set to EXTERNAL. Not supported when the URL map is bound to a target gRPC proxy that has validateForProxyless field set to true. |
| `↳ weight` | `int` Specifies the fraction of traffic sent to a backend service, computed asweight / (sum of all weightedBackendService weights in routeAction). The selection of a backend service is determined only for new traffic. Once a user's request has been directed to a backend service, subsequent requests are sent to the same backend service as determined by the backend service's session affinity policy. Don't configure session affinity if you're using weighted traffic splitting. If you do, the weighted traffic splitting configuration takes precedence. The value must be from 0 to 1000. |

### getBackendService

The full or partial URL to the default BackendService
resource. Before
forwarding the request to backendService, the load balancer
applies any relevant headerActions specified as part of thisbackendServiceWeight.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `string` |   |

### hasBackendService

### clearBackendService

### setBackendService

The full or partial URL to the default BackendService
resource. Before
forwarding the request to backendService, the load balancer
applies any relevant headerActions specified as part of thisbackendServiceWeight.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `string` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |

### getHeaderAction

Specifies changes to request and response headers that need to take
effect for the selected backendService.

headerAction specified here take effect beforeheaderAction in the enclosing HttpRouteRule,PathMatcher and UrlMap.
headerAction is not supported for load balancers that have
their loadBalancingScheme set to EXTERNAL.
Not supported when the URL map is bound to a target gRPC proxy that
has validateForProxyless field set to true.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `https://docs.cloud.google.com/php/docs/reference/cloud-compute/latest/V1.HttpHeaderAction|null` |   |

### hasHeaderAction

### clearHeaderAction

### setHeaderAction

Specifies changes to request and response headers that need to take
effect for the selected backendService.

headerAction specified here take effect beforeheaderAction in the enclosing HttpRouteRule,PathMatcher and UrlMap.
headerAction is not supported for load balancers that have
their loadBalancingScheme set to EXTERNAL.
Not supported when the URL map is bound to a target gRPC proxy that
has validateForProxyless field set to true.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `https://docs.cloud.google.com/php/docs/reference/cloud-compute/latest/V1.HttpHeaderAction` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |

### getWeight

Specifies the fraction of traffic sent to a backend service,
computed asweight / (sum of all weightedBackendService weights in routeAction).

The selection of a backend service is determined only for new traffic.
Once a user's request has been directed to a backend service,
subsequent requests are sent to the same backend service as
determined by the backend service's session affinity policy.
Don't configure session affinity if you're using weighted traffic
splitting. If you do, the weighted traffic splitting configuration takes
precedence.
The value must be from 0 to 1000.

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `int` |   |

### hasWeight

### clearWeight

### setWeight

Specifies the fraction of traffic sent to a backend service,
computed asweight / (sum of all weightedBackendService weights in routeAction).

The selection of a backend service is determined only for new traffic.
Once a user's request has been directed to a backend service,
subsequent requests are sent to the same backend service as
determined by the backend service's session affinity policy.
Don't configure session affinity if you're using weighted traffic
splitting. If you do, the weighted traffic splitting configuration takes
precedence.
The value must be from 0 to 1000.

| **Parameter** ||
|---|---|
| **Name** | **Description** |
| `var` | `int` |

| **Returns** ||
|---|---|
| **Type** | **Description** |
| `$this` |   |