Class/Object

com.twitter.finagle.builder

ServerBuilder

Related Docs: object ServerBuilder | package builder

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class ServerBuilder[Req, Rep, HasCodec, HasBindTo, HasName] extends AnyRef

A handy Builder for constructing Servers (i.e., binding Services to a port). This class is subclassable. Override copy() and build() to do your own dirty work.

Please see the Finagle user guide for information on the preferred with-style client-construction APIs.

The main class to use is com.twitter.finagle.builder.ServerBuilder, as so

ServerBuilder()
  .stack(Http.server)
  .hostConnectionMaxLifeTime(5.minutes)
  .readTimeout(2.minutes)
  .name("servicename")
  .bindTo(new InetSocketAddress(serverPort))
  .build(plusOneService)

The ServerBuilder requires the definition of stack, bindTo and name. In Scala, these are statically type checked, and in Java the lack of any of the above causes a runtime error.

The build method uses an implicit argument to statically typecheck the builder (to ensure completeness, see above). The Java compiler cannot provide such implicit, so we provide a separate function in Java to accomplish this. Thus, the Java code for the above is

ServerBuilder.safeBuild(
 plusOneService,
 ServerBuilder.get()
  .stack(Http.server())
  .hostConnectionMaxLifeTime(5.minutes)
  .readTimeout(2.minutes)
  .name("servicename")
  .bindTo(new InetSocketAddress(serverPort)));

Alternatively, using the unsafeBuild method on ServerBuilder verifies the builder dynamically, resulting in a runtime error instead of a compiler error.

Defaults

The following defaults are applied to servers constructed via ServerBuilder, unless overridden with the corresponding method. These defaults were chosen carefully so as to work well for most use cases. Before changing any of them, make sure that you know exactly how they will affect your application -- these options are typically only changed by expert users.

- openConnectionsThresholds: None - maxConcurrentRequests: Int.MaxValue - backlog: OS-defined default value

See also

The user guide for information on the preferred with-style APIs insead.

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Type Members

  1. type FullySpecifiedConfig = ServerConfig[Req, Rep, Yes, Yes, Yes]

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  2. type This = ServerBuilder[Req, Rep, HasCodec, HasBindTo, HasName]

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  3. type ThisConfig = ServerConfig[Req, Rep, HasCodec, HasBindTo, HasName]

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Value Members

  1. final def !=(arg0: Any): Boolean

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    Definition Classes
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  2. final def ##(): Int

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  3. final def ==(arg0: Any): Boolean

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  4. final def asInstanceOf[T0]: T0

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    Definition Classes
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  5. def backlog(value: Int): This

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  6. def bindTo(address: SocketAddress): ServerBuilder[Req, Rep, HasCodec, Yes, HasName]

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    To migrate to the Stack-based APIs, use Server.serve.

    To migrate to the Stack-based APIs, use Server.serve. For example:

    import com.twitter.finagle.Http
import com.twitter.finagle.Service

val service: Service[Req, Rep] = ???
Http.server.serve(address, service)

  7. def build(serviceFactory: ServiceFactory[Req, Rep])(implicit THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: ServerConfigEvidence[HasCodec, HasBindTo, HasName]): ListeningServer

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    Construct the Server, given the provided ServiceFactory.

    Construct the Server, given the provided ServiceFactory. This is useful if the protocol is stateful (e.g., requires authentication or supports transactions).

  8. def build(service: Service[Req, Rep])(implicit THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: ServerConfigEvidence[HasCodec, HasBindTo, HasName]): ListeningServer

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    Construct the Server, given the provided Service.

  9. def cancelOnHangup(yesOrNo: Boolean): This

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    Cancel pending futures whenever the the connection is shut down.

    Cancel pending futures whenever the the connection is shut down. This defaults to true.

    To migrate to the Stack-based APIs, use configured. For example:

    import com.twitter.finagle.Http
import com.twitter.finagle.filter.MaskCancelFilter

Http.server.configured(MaskCancelFilter.Param(!yesOrNo))
    See also

    com.twitter.finagle.filter.ServerAdmissionControl

  10. def clone(): AnyRef

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    Attributes
    protected[java.lang]
    Definition Classes
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    Annotations
    @throws( ... )

  11. def configured[P](paramAndStackParam: (P, Param[P])): This

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    Java friendly API for configuring the underlying Params.

    Java friendly API for configuring the underlying Params.

    paramAndStackParam

    Configures the server with a given param represented as the tuple (param value, stack param instance) The Tuple2 can often be created by calls to a mk(): (P, Stack.Param[P]) method on parameters (see com.twitter.finagle.loadbalancer.LoadBalancerFactory.Param.mk() as an example).

  12. def configured[P](param: P)(implicit stackParam: Param[P]): This

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    Configure the underlying Params.

    Configure the underlying Params.

    param

    Configures the server with a given param Java users may find it easier to use the Tuple2 version below.

  13. def daemon(daemonize: Boolean): This

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    When true, the server is daemonized.

    When true, the server is daemonized. As with java threads, a process can only exit only when all remaining servers are daemonized. False by default.

    The default for the Stack-based APIs is for the server to be daemonized.

  14. def enableAdmissionControl(enable: Boolean): This

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    Configure admission control filters in the server Stack.

    Configure admission control filters in the server Stack.

    To migrate to the Stack-based APIs, use configured. For example:

    import com.twitter.finagle.Http
import com.twitter.finagle.filter.ServerAdmissionControl

Http.server.configured(ServerAdmissionControl.Param(enable))
    See also

    com.twitter.finagle.filter.ServerAdmissionControl

  15. final def eq(arg0: AnyRef): Boolean

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    Definition Classes
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  16. def equals(arg0: Any): Boolean

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  17. def exceptionCategorizer(exceptionStatsHandler: ExceptionStatsHandler): This

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    Provide an alternative to putting all request exceptions under a "failures" stat.

    Provide an alternative to putting all request exceptions under a "failures" stat. Typical implementations may report any cancellations or validation errors separately so success rate considers only valid non cancelled requests.

    To migrate to the Stack-based APIs, use CommonParams.withExceptionStatsHandler. For example:

    import com.twitter.finagle.Http

Http.server.withExceptionStatsHandler(exceptionStatsHandler)
    exceptionStatsHandler

    function to record failure details.

  18. def finalize(): Unit

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    Attributes
    protected[java.lang]
    Definition Classes
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    Annotations
    @throws( classOf[java.lang.Throwable] )

  19. final def getClass(): Class[_]

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  20. def hashCode(): Int

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  21. def hostConnectionMaxIdleTime(howlong: Duration): This

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  22. def hostConnectionMaxLifeTime(howlong: Duration): This

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  23. final def isInstanceOf[T0]: Boolean

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    Definition Classes
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  24. def keepAlive(value: Boolean): This

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  25. def logChannelActivity(v: Boolean): This

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    To migrate to the Stack-based APIs, use ServerTransportParams.verbose.

    To migrate to the Stack-based APIs, use ServerTransportParams.verbose. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.verbose

  26. def logger(logger: Logger): This

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    To migrate to the Stack-based APIs, use configured.

    To migrate to the Stack-based APIs, use configured. For example:

    import com.twitter.finagle.Http
import com.twitter.finagle.param

Http.server.configured(param.Logger(logger))

  27. def maxConcurrentRequests(max: Int): This

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    Configures the maximum concurrent requests that are admitted by the server at any given time.

    Configures the maximum concurrent requests that are admitted by the server at any given time. If the server receives a burst of traffic that exceeds this limit, the burst is rejected with a FailureFlags.Rejected exception. Note, this failure signals a graceful rejection which is transmitted to clients by certain protocols in Finagle (e.g. Http, ThriftMux). The limit is global to all sessions.

    To migrate to the Stack-based APIs, use ServerAdmissionControlParams.concurrencyLimit. For example:

    import com.twitter.finagle.Http

Http.server.withAdmissionControl.concurrencyLimit(10, 0)

  28. def monitor(mFactory: (String, SocketAddress) ⇒ Monitor): This

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    To migrate to the Stack-based APIs, use CommonParams.withMonitor.

    To migrate to the Stack-based APIs, use CommonParams.withMonitor. For example:

    import com.twitter.finagle.Http
import com.twitter.util.Monitor

val monitor: Monitor = ???
Http.server.withMonitor(monitor)

  29. def name(value: String): ServerBuilder[Req, Rep, HasCodec, HasBindTo, Yes]

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    To migrate to the Stack-based APIs, use CommonParams.withLabel.

    To migrate to the Stack-based APIs, use CommonParams.withLabel. For example:

    import com.twitter.finagle.Http

Http.server.withLabel("my_server")

  30. final def ne(arg0: AnyRef): Boolean

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  31. final def notify(): Unit

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  32. final def notifyAll(): Unit

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  33. def params: Params

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    The underlying Params used for configuration.

  34. def readTimeout(howlong: Duration): This

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    To migrate to the Stack-based APIs, use TransportParams.readTimeout.

    To migrate to the Stack-based APIs, use TransportParams.readTimeout. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.readTimeout(howlong)

  35. def recvBufferSize(value: Int): This

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    To migrate to the Stack-based APIs, use ServerTransportParams.receiveBufferSize.

    To migrate to the Stack-based APIs, use ServerTransportParams.receiveBufferSize. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.receiveBufferSize(value)

  36. def reportTo(receiver: StatsReceiver): This

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    To migrate to the Stack-based APIs, use CommonParams.withStatsReceiver.

    To migrate to the Stack-based APIs, use CommonParams.withStatsReceiver. For example:

    import com.twitter.finagle.Http

Http.server.withStatsReceiver(receiver)

  37. def requestTimeout(howlong: Duration): This

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    To migrate to the Stack-based APIs, use CommonParams.withRequestTimeout.

    To migrate to the Stack-based APIs, use CommonParams.withRequestTimeout. For example:

    import com.twitter.finagle.Http

Http.server.withRequestTimeout(howlong)
    Note

    if the request is not complete after howlong, the work that is in progress will be interrupted via Future.raise.

  38. def responseClassifier: ResponseClassifier

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    The currently configured com.twitter.finagle.service.ResponseClassifier.

    The currently configured com.twitter.finagle.service.ResponseClassifier.

    Note

    If unspecified, the default classifier is com.twitter.finagle.service.ResponseClassifier.Default.

  39. def responseClassifier(classifier: ResponseClassifier): This

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    Configure a com.twitter.finagle.service.ResponseClassifier which is used to determine the result of a request/response.

    Configure a com.twitter.finagle.service.ResponseClassifier which is used to determine the result of a request/response.

    This allows developers to give Finagle the additional application-specific knowledge necessary in order to properly classify responses. Without this, Finagle cannot make judgements about application-level failures as it only has a narrow understanding of failures (for example: transport level, timeouts, and nacks).

    As an example take an HTTP server that returns a response with a 500 status code. To Finagle this is a successful request/response. However, the application developer may want to treat all 500 status codes as failures and can do so via setting a com.twitter.finagle.service.ResponseClassifier.

    ResponseClassifier is a PartialFunction and as such multiple classifiers can be composed together via PartialFunction.orElse.

    Response classification is independently configured on the client and server. For client-side response classification using com.twitter.finagle.builder.ClientBuilder, see com.twitter.finagle.builder.ClientBuilder.responseClassifier

    To migrate to the Stack-based APIs, use CommonParams.withResponseClassifier. For example:

    import com.twitter.finagle.Http

Http.server.withResponseClassifier(classifier)
    Note

    If unspecified, the default classifier is com.twitter.finagle.service.ResponseClassifier.Default which is a total function fully covering the input domain.

    See also

    com.twitter.finagle.http.service.HttpResponseClassifier for some HTTP classification tools.

  40. def sendBufferSize(value: Int): This

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    To migrate to the Stack-based APIs, use ServerTransportParams.sendBufferSize.

    To migrate to the Stack-based APIs, use ServerTransportParams.sendBufferSize. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.sendBufferSize(value)

  41. def stack[Req1, Rep1](server: StackBasedServer[Req1, Rep1]): ServerBuilder[Req1, Rep1, Yes, HasBindTo, HasName]

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    Overrides the stack and com.twitter.finagle.Server that will be used by this builder.

    Overrides the stack and com.twitter.finagle.Server that will be used by this builder.

    server

    A StackBasedServer representation of a com.twitter.finagle.Server. server is materialized with the state of configuration when build is called. There is no guarantee that all builder parameters will be used by the resultant Server; it is up to the discretion of server itself and the protocol implementation.

  42. final def synchronized[T0](arg0: ⇒ T0): T0

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    Definition Classes
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  43. def tls(config: SslServerConfiguration, engineFactory: SslServerEngineFactory, sessionVerifier: SslServerSessionVerifier): This

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    Encrypt the connection with SSL/TLS.

    Encrypt the connection with SSL/TLS.

    To migrate to the Stack-based APIs, use ServerTransportParams.tls. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.tls(config, engineFactory, sessionVerifier)

  44. def tls(config: SslServerConfiguration, sessionVerifier: SslServerSessionVerifier): This

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    Encrypt the connection with SSL/TLS.

    Encrypt the connection with SSL/TLS.

    To migrate to the Stack-based APIs, use ServerTransportParams.tls. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.tls(config, sessionVerifier)

  45. def tls(config: SslServerConfiguration, engineFactory: SslServerEngineFactory): This

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    Encrypt the connection with SSL/TLS.

    Encrypt the connection with SSL/TLS.

    To migrate to the Stack-based APIs, use ServerTransportParams.tls. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.tls(config, engineFactory)

  46. def tls(config: SslServerConfiguration): This

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    Encrypt the connection with SSL/TLS.

    Encrypt the connection with SSL/TLS.

    To migrate to the Stack-based APIs, use ServerTransportParams.tls. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.tls(config)

  47. def toString(): String

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    Definition Classes
    ServerBuilder → AnyRef → Any

  48. def tracer(t: Tracer): This

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    To migrate to the Stack-based APIs, use CommonParams.withTracer.

    To migrate to the Stack-based APIs, use CommonParams.withTracer. For example:

    import com.twitter.finagle.Http

Http.server.withTracer(t)

  49. def trafficClass(value: Option[Int]): This

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    Configures the traffic class.

    Configures the traffic class.

    To migrate to the Stack-based APIs, use configured. For example:

    import com.twitter.finagle.Http
import com.twitter.finagle.server.Listener

Http.server.configured(Listener.TrafficClass(value))
    See also

    Listener.TrafficClass

  50. def unsafeBuild(service: Service[Req, Rep]): ListeningServer

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    Construct a Service, with runtime checks for builder completeness.

  51. final def wait(): Unit

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    Annotations
    @throws( ... )

  52. final def wait(arg0: Long, arg1: Int): Unit

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    @throws( ... )

  53. final def wait(arg0: Long): Unit

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    @throws( ... )

  54. def writeCompletionTimeout(howlong: Duration): This

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    To migrate to the Stack-based APIs, use TransportParams.writeTimeout.

    To migrate to the Stack-based APIs, use TransportParams.writeTimeout. For example:

    import com.twitter.finagle.Http

Http.server.withTransport.writeTimeout(howlong)

Deprecated Value Members

  1. final def build(serviceFactory: ServiceFactory[Req, Rep], THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: =:=[ThisConfig, FullySpecifiedConfig]): ListeningServer

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    Annotations
    @deprecated
    Deprecated

    (Since version 5.0.1) Used for ABI compat

  2. final def build(serviceFactory: (ClientConnection) ⇒ Service[Req, Rep])(implicit THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: =:=[ThisConfig, FullySpecifiedConfig]): ListeningServer

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    Construct the Server, given the provided ServiceFactory.

    Construct the Server, given the provided ServiceFactory. This is useful if the protocol is stateful (e.g., requires authentication or supports transactions).

    Annotations
    @deprecated
    Deprecated

    (Since version 5.0.1) Use the ServiceFactory variant instead

  3. final def build(serviceFactory: () ⇒ Service[Req, Rep])(implicit THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: =:=[ThisConfig, FullySpecifiedConfig]): ListeningServer

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    Construct the Server, given the provided Service factory.

    Construct the Server, given the provided Service factory.

    Annotations
    @deprecated
    Deprecated

    (Since version 5.0.1) Use the ServiceFactory variant instead

  4. final def build(service: Service[Req, Rep], THE_BUILDER_IS_NOT_FULLY_SPECIFIED_SEE_ServerBuilder_DOCUMENTATION: =:=[ThisConfig, FullySpecifiedConfig]): ListeningServer

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    Annotations
    @deprecated
    Deprecated

    (Since version 5.0.1) Used for ABI compat

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