Package com.google.cloud.scheduler.v1

Class AppEngineRouting.Builder

java.lang.Object
com.google.protobuf.AbstractMessageLite.Builder
com.google.protobuf.AbstractMessage.Builder<BuilderT>
com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder>
com.google.cloud.scheduler.v1.AppEngineRouting.Builder
All Implemented Interfaces:
AppEngineRoutingOrBuilder, com.google.protobuf.Message.Builder, com.google.protobuf.MessageLite.Builder, com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder, Cloneable
Enclosing class:
AppEngineRouting
public static final class AppEngineRouting.Builder extends com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder> implements AppEngineRoutingOrBuilder
 App Engine Routing.

 For more information about services, versions, and instances see
 [An Overview of App
 Engine](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine),
 [Microservices Architecture on Google App
 Engine](https://cloud.google.com/appengine/docs/python/microservices-on-app-engine),
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed),
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
Protobuf type google.cloud.scheduler.v1.AppEngineRouting

  • Method Details

    • getDescriptor

      public static final com.google.protobuf.Descriptors.Descriptor getDescriptor()

    • internalGetFieldAccessorTable

      protected com.google.protobuf.GeneratedMessage.FieldAccessorTable internalGetFieldAccessorTable()
      Specified by:
      internalGetFieldAccessorTable in class com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder>

    • clear

      public AppEngineRouting.Builder clear()
      Specified by:
      clear in interface com.google.protobuf.Message.Builder
      Specified by:
      clear in interface com.google.protobuf.MessageLite.Builder
      Overrides:
      clear in class com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder>

    • getDescriptorForType

      public com.google.protobuf.Descriptors.Descriptor getDescriptorForType()
      Specified by:
      getDescriptorForType in interface com.google.protobuf.Message.Builder
      Specified by:
      getDescriptorForType in interface com.google.protobuf.MessageOrBuilder
      Overrides:
      getDescriptorForType in class com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder>

    • getDefaultInstanceForType

      public AppEngineRouting getDefaultInstanceForType()
      Specified by:
      getDefaultInstanceForType in interface com.google.protobuf.MessageLiteOrBuilder
      Specified by:
      getDefaultInstanceForType in interface com.google.protobuf.MessageOrBuilder

    • build

      public AppEngineRouting build()
      Specified by:
      build in interface com.google.protobuf.Message.Builder
      Specified by:
      build in interface com.google.protobuf.MessageLite.Builder

    • buildPartial

      public AppEngineRouting buildPartial()
      Specified by:
      buildPartial in interface com.google.protobuf.Message.Builder
      Specified by:
      buildPartial in interface com.google.protobuf.MessageLite.Builder

    • mergeFrom

      public AppEngineRouting.Builder mergeFrom(com.google.protobuf.Message other)
      Specified by:
      mergeFrom in interface com.google.protobuf.Message.Builder
      Overrides:
      mergeFrom in class com.google.protobuf.AbstractMessage.Builder<AppEngineRouting.Builder>

    • mergeFrom

      public AppEngineRouting.Builder mergeFrom(AppEngineRouting other)

    • isInitialized

      public final boolean isInitialized()
      Specified by:
      isInitialized in interface com.google.protobuf.MessageLiteOrBuilder
      Overrides:
      isInitialized in class com.google.protobuf.GeneratedMessage.Builder<AppEngineRouting.Builder>

    • mergeFrom

      public AppEngineRouting.Builder mergeFrom(com.google.protobuf.CodedInputStream input, com.google.protobuf.ExtensionRegistryLite extensionRegistry) throws IOException
      Specified by:
      mergeFrom in interface com.google.protobuf.Message.Builder
      Specified by:
      mergeFrom in interface com.google.protobuf.MessageLite.Builder
      Overrides:
      mergeFrom in class com.google.protobuf.AbstractMessage.Builder<AppEngineRouting.Builder>
      Throws:
      IOException

    • getService

      public String getService()
       App service.

 By default, the job is sent to the service which is the default
 service when the job is attempted.
      string service = 1;
      Specified by:
      getService in interface AppEngineRoutingOrBuilder
      Returns:
      The service.

    • getServiceBytes

      public com.google.protobuf.ByteString getServiceBytes()
       App service.

 By default, the job is sent to the service which is the default
 service when the job is attempted.
      string service = 1;
      Specified by:
      getServiceBytes in interface AppEngineRoutingOrBuilder
      Returns:
      The bytes for service.

    • setService

      public AppEngineRouting.Builder setService(String value)
       App service.

 By default, the job is sent to the service which is the default
 service when the job is attempted.
      string service = 1;
      Parameters:
      value - The service to set.
      Returns:
      This builder for chaining.

    • clearService

      public AppEngineRouting.Builder clearService()
       App service.

 By default, the job is sent to the service which is the default
 service when the job is attempted.
      string service = 1;
      Returns:
      This builder for chaining.

    • setServiceBytes

      public AppEngineRouting.Builder setServiceBytes(com.google.protobuf.ByteString value)
       App service.

 By default, the job is sent to the service which is the default
 service when the job is attempted.
      string service = 1;
      Parameters:
      value - The bytes for service to set.
      Returns:
      This builder for chaining.

    • getVersion

      public String getVersion()
       App version.

 By default, the job is sent to the version which is the default
 version when the job is attempted.
      string version = 2;
      Specified by:
      getVersion in interface AppEngineRoutingOrBuilder
      Returns:
      The version.

    • getVersionBytes

      public com.google.protobuf.ByteString getVersionBytes()
       App version.

 By default, the job is sent to the version which is the default
 version when the job is attempted.
      string version = 2;
      Specified by:
      getVersionBytes in interface AppEngineRoutingOrBuilder
      Returns:
      The bytes for version.

    • setVersion

      public AppEngineRouting.Builder setVersion(String value)
       App version.

 By default, the job is sent to the version which is the default
 version when the job is attempted.
      string version = 2;
      Parameters:
      value - The version to set.
      Returns:
      This builder for chaining.

    • clearVersion

      public AppEngineRouting.Builder clearVersion()
       App version.

 By default, the job is sent to the version which is the default
 version when the job is attempted.
      string version = 2;
      Returns:
      This builder for chaining.

    • setVersionBytes

      public AppEngineRouting.Builder setVersionBytes(com.google.protobuf.ByteString value)
       App version.

 By default, the job is sent to the version which is the default
 version when the job is attempted.
      string version = 2;
      Parameters:
      value - The bytes for version to set.
      Returns:
      This builder for chaining.

    • getInstance

      public String getInstance()
       App instance.

 By default, the job is sent to an instance which is available when
 the job is attempted.

 Requests can only be sent to a specific instance if
 [manual scaling is used in App Engine
 Standard](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine?#scaling_types_and_instance_classes).
 App Engine Flex does not support instances. For more information, see
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed)
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
      string instance = 3;
      Specified by:
      getInstance in interface AppEngineRoutingOrBuilder
      Returns:
      The instance.

    • getInstanceBytes

      public com.google.protobuf.ByteString getInstanceBytes()
       App instance.

 By default, the job is sent to an instance which is available when
 the job is attempted.

 Requests can only be sent to a specific instance if
 [manual scaling is used in App Engine
 Standard](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine?#scaling_types_and_instance_classes).
 App Engine Flex does not support instances. For more information, see
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed)
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
      string instance = 3;
      Specified by:
      getInstanceBytes in interface AppEngineRoutingOrBuilder
      Returns:
      The bytes for instance.

    • setInstance

      public AppEngineRouting.Builder setInstance(String value)
       App instance.

 By default, the job is sent to an instance which is available when
 the job is attempted.

 Requests can only be sent to a specific instance if
 [manual scaling is used in App Engine
 Standard](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine?#scaling_types_and_instance_classes).
 App Engine Flex does not support instances. For more information, see
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed)
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
      string instance = 3;
      Parameters:
      value - The instance to set.
      Returns:
      This builder for chaining.

    • clearInstance

      public AppEngineRouting.Builder clearInstance()
       App instance.

 By default, the job is sent to an instance which is available when
 the job is attempted.

 Requests can only be sent to a specific instance if
 [manual scaling is used in App Engine
 Standard](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine?#scaling_types_and_instance_classes).
 App Engine Flex does not support instances. For more information, see
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed)
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
      string instance = 3;
      Returns:
      This builder for chaining.

    • setInstanceBytes

      public AppEngineRouting.Builder setInstanceBytes(com.google.protobuf.ByteString value)
       App instance.

 By default, the job is sent to an instance which is available when
 the job is attempted.

 Requests can only be sent to a specific instance if
 [manual scaling is used in App Engine
 Standard](https://cloud.google.com/appengine/docs/python/an-overview-of-app-engine?#scaling_types_and_instance_classes).
 App Engine Flex does not support instances. For more information, see
 [App Engine Standard request
 routing](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed)
 and [App Engine Flex request
 routing](https://cloud.google.com/appengine/docs/flexible/python/how-requests-are-routed).
      string instance = 3;
      Parameters:
      value - The bytes for instance to set.
      Returns:
      This builder for chaining.

    • getHost

      public String getHost()
       Output only. The host that the job is sent to.

 For more information about how App Engine requests are routed, see
 [here](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed).

 The host is constructed as:


 * `host = [application_domain_name]`</br>
 `| [service] + '.' + [application_domain_name]`</br>
 `| [version] + '.' + [application_domain_name]`</br>
 `| [version_dot_service]+ '.' + [application_domain_name]`</br>
 `| [instance] + '.' + [application_domain_name]`</br>
 `| [instance_dot_service] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version_dot_service] + '.' + [application_domain_name]`

 * `application_domain_name` = The domain name of the app, for
 example <app-id>.appspot.com, which is associated with the
 job's project ID.

 * `service =` [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `version =` [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `version_dot_service =`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance]

 * `instance_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance_dot_version =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `instance_dot_version_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]


 If [service][google.cloud.scheduler.v1.AppEngineRouting.service] is empty,
 then the job will be sent to the service which is the default service when
 the job is attempted.

 If [version][google.cloud.scheduler.v1.AppEngineRouting.version] is empty,
 then the job will be sent to the version which is the default version when
 the job is attempted.

 If [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is
 empty, then the job will be sent to an instance which is available when the
 job is attempted.

 If [service][google.cloud.scheduler.v1.AppEngineRouting.service],
 [version][google.cloud.scheduler.v1.AppEngineRouting.version], or
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is invalid,
 then the job will be sent to the default version of the default service
 when the job is attempted.
      string host = 4;
      Specified by:
      getHost in interface AppEngineRoutingOrBuilder
      Returns:
      The host.

    • getHostBytes

      public com.google.protobuf.ByteString getHostBytes()
       Output only. The host that the job is sent to.

 For more information about how App Engine requests are routed, see
 [here](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed).

 The host is constructed as:


 * `host = [application_domain_name]`</br>
 `| [service] + '.' + [application_domain_name]`</br>
 `| [version] + '.' + [application_domain_name]`</br>
 `| [version_dot_service]+ '.' + [application_domain_name]`</br>
 `| [instance] + '.' + [application_domain_name]`</br>
 `| [instance_dot_service] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version_dot_service] + '.' + [application_domain_name]`

 * `application_domain_name` = The domain name of the app, for
 example <app-id>.appspot.com, which is associated with the
 job's project ID.

 * `service =` [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `version =` [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `version_dot_service =`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance]

 * `instance_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance_dot_version =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `instance_dot_version_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]


 If [service][google.cloud.scheduler.v1.AppEngineRouting.service] is empty,
 then the job will be sent to the service which is the default service when
 the job is attempted.

 If [version][google.cloud.scheduler.v1.AppEngineRouting.version] is empty,
 then the job will be sent to the version which is the default version when
 the job is attempted.

 If [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is
 empty, then the job will be sent to an instance which is available when the
 job is attempted.

 If [service][google.cloud.scheduler.v1.AppEngineRouting.service],
 [version][google.cloud.scheduler.v1.AppEngineRouting.version], or
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is invalid,
 then the job will be sent to the default version of the default service
 when the job is attempted.
      string host = 4;
      Specified by:
      getHostBytes in interface AppEngineRoutingOrBuilder
      Returns:
      The bytes for host.

    • setHost

      public AppEngineRouting.Builder setHost(String value)
       Output only. The host that the job is sent to.

 For more information about how App Engine requests are routed, see
 [here](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed).

 The host is constructed as:


 * `host = [application_domain_name]`</br>
 `| [service] + '.' + [application_domain_name]`</br>
 `| [version] + '.' + [application_domain_name]`</br>
 `| [version_dot_service]+ '.' + [application_domain_name]`</br>
 `| [instance] + '.' + [application_domain_name]`</br>
 `| [instance_dot_service] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version_dot_service] + '.' + [application_domain_name]`

 * `application_domain_name` = The domain name of the app, for
 example <app-id>.appspot.com, which is associated with the
 job's project ID.

 * `service =` [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `version =` [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `version_dot_service =`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance]

 * `instance_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance_dot_version =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `instance_dot_version_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]


 If [service][google.cloud.scheduler.v1.AppEngineRouting.service] is empty,
 then the job will be sent to the service which is the default service when
 the job is attempted.

 If [version][google.cloud.scheduler.v1.AppEngineRouting.version] is empty,
 then the job will be sent to the version which is the default version when
 the job is attempted.

 If [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is
 empty, then the job will be sent to an instance which is available when the
 job is attempted.

 If [service][google.cloud.scheduler.v1.AppEngineRouting.service],
 [version][google.cloud.scheduler.v1.AppEngineRouting.version], or
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is invalid,
 then the job will be sent to the default version of the default service
 when the job is attempted.
      string host = 4;
      Parameters:
      value - The host to set.
      Returns:
      This builder for chaining.

    • clearHost

      public AppEngineRouting.Builder clearHost()
       Output only. The host that the job is sent to.

 For more information about how App Engine requests are routed, see
 [here](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed).

 The host is constructed as:


 * `host = [application_domain_name]`</br>
 `| [service] + '.' + [application_domain_name]`</br>
 `| [version] + '.' + [application_domain_name]`</br>
 `| [version_dot_service]+ '.' + [application_domain_name]`</br>
 `| [instance] + '.' + [application_domain_name]`</br>
 `| [instance_dot_service] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version_dot_service] + '.' + [application_domain_name]`

 * `application_domain_name` = The domain name of the app, for
 example <app-id>.appspot.com, which is associated with the
 job's project ID.

 * `service =` [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `version =` [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `version_dot_service =`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance]

 * `instance_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance_dot_version =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `instance_dot_version_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]


 If [service][google.cloud.scheduler.v1.AppEngineRouting.service] is empty,
 then the job will be sent to the service which is the default service when
 the job is attempted.

 If [version][google.cloud.scheduler.v1.AppEngineRouting.version] is empty,
 then the job will be sent to the version which is the default version when
 the job is attempted.

 If [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is
 empty, then the job will be sent to an instance which is available when the
 job is attempted.

 If [service][google.cloud.scheduler.v1.AppEngineRouting.service],
 [version][google.cloud.scheduler.v1.AppEngineRouting.version], or
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is invalid,
 then the job will be sent to the default version of the default service
 when the job is attempted.
      string host = 4;
      Returns:
      This builder for chaining.

    • setHostBytes

      public AppEngineRouting.Builder setHostBytes(com.google.protobuf.ByteString value)
       Output only. The host that the job is sent to.

 For more information about how App Engine requests are routed, see
 [here](https://cloud.google.com/appengine/docs/standard/python/how-requests-are-routed).

 The host is constructed as:


 * `host = [application_domain_name]`</br>
 `| [service] + '.' + [application_domain_name]`</br>
 `| [version] + '.' + [application_domain_name]`</br>
 `| [version_dot_service]+ '.' + [application_domain_name]`</br>
 `| [instance] + '.' + [application_domain_name]`</br>
 `| [instance_dot_service] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version] + '.' + [application_domain_name]`</br>
 `| [instance_dot_version_dot_service] + '.' + [application_domain_name]`

 * `application_domain_name` = The domain name of the app, for
 example <app-id>.appspot.com, which is associated with the
 job's project ID.

 * `service =` [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `version =` [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `version_dot_service =`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance]

 * `instance_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]

 * `instance_dot_version =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version]

 * `instance_dot_version_dot_service =`
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] `+ '.' +`
 [version][google.cloud.scheduler.v1.AppEngineRouting.version] `+ '.' +`
 [service][google.cloud.scheduler.v1.AppEngineRouting.service]


 If [service][google.cloud.scheduler.v1.AppEngineRouting.service] is empty,
 then the job will be sent to the service which is the default service when
 the job is attempted.

 If [version][google.cloud.scheduler.v1.AppEngineRouting.version] is empty,
 then the job will be sent to the version which is the default version when
 the job is attempted.

 If [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is
 empty, then the job will be sent to an instance which is available when the
 job is attempted.

 If [service][google.cloud.scheduler.v1.AppEngineRouting.service],
 [version][google.cloud.scheduler.v1.AppEngineRouting.version], or
 [instance][google.cloud.scheduler.v1.AppEngineRouting.instance] is invalid,
 then the job will be sent to the default version of the default service
 when the job is attempted.
      string host = 4;
      Parameters:
      value - The bytes for host to set.
      Returns:
      This builder for chaining.