Packages

  • package root
    Definition Classes
    root
  • package com
    Definition Classes
    root
  • package twitter

    Start with com.twitter.finagle.

    Definition Classes
    com
  • package finagle

    Finagle is an extensible RPC system.

    Finagle is an extensible RPC system.

    Services are represented by class com.twitter.finagle.Service. Clients make use of com.twitter.finagle.Service objects while servers implement them.

    Finagle contains a number of protocol implementations; each of these implement Client and/or com.twitter.finagle.Server. For example, Finagle's HTTP implementation, com.twitter.finagle.Http (in package finagle-http), exposes both.

    Thus a simple HTTP server is built like this:

    import com.twitter.finagle.{Http, Service}
    import com.twitter.finagle.http.{Request, Response}
    import com.twitter.util.{Await, Future}
    
    val service = new Service[Request, Response] {
      def apply(req: Request): Future[Response] =
        Future.value(Response())
    }
    val server = Http.server.serve(":8080", service)
    Await.ready(server)

    We first define a service to which requests are dispatched. In this case, the service returns immediately with a HTTP 200 OK response, and with no content.

    This service is then served via the Http protocol on TCP port 8080. Finally we wait for the server to stop serving.

    We can now query our web server:

    % curl -D - localhost:8080
    HTTP/1.1 200 OK

    Building an HTTP client is also simple. (Note that type annotations are added for illustration.)

    import com.twitter.finagle.{Http, Service}
    import com.twitter.finagle.http.{Request, Response}
    import com.twitter.util.{Future, Return, Throw}
    
    val client: Service[Request, Response] = Http.client.newService("localhost:8080")
    val f: Future[Response] = client(Request()).respond {
      case Return(rep) =>
        printf("Got HTTP response %s\n", rep)
      case Throw(exc) =>
        printf("Got error %s\n", exc)
    }

    Http.client.newService("localhost:8080") constructs a new com.twitter.finagle.Service instance connected to localhost TCP port 8080. We then issue a HTTP/1.1 GET request to URI "/". The service returns a com.twitter.util.Future representing the result of the operation. We listen to this future, printing an appropriate message when the response arrives.

    The Finagle homepage contains useful documentation and resources for using Finagle.

    Definition Classes
    twitter
  • package context
    Definition Classes
    finagle
  • BackupRequest
  • Context
  • Contexts
  • Deadline
  • LocalContext
  • MarshalledContext
  • RemoteInfo
  • Requeues

case class Deadline(timestamp: Time, deadline: Time) extends Ordered[Deadline] with Product with Serializable

A deadline is the time by which some action (e.g., a request) must complete. A deadline has a timestamp in addition to the deadline. This timestamp denotes the time at which the deadline was enacted.

This is done so that they may be reconciled over process boundaries; e.g., to account for variable latencies in message deliveries.

timestamp

the time at which the deadline was enacted.

deadline

the time by which the action must complete.

Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Deadline
  2. Serializable
  3. Product
  4. Equals
  5. Ordered
  6. Comparable
  7. AnyRef
  8. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new Deadline(timestamp: Time, deadline: Time)

    timestamp

    the time at which the deadline was enacted.

    deadline

    the time by which the action must complete.

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def <(that: Deadline): Boolean
    Definition Classes
    Ordered
  4. def <=(that: Deadline): Boolean
    Definition Classes
    Ordered
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def >(that: Deadline): Boolean
    Definition Classes
    Ordered
  7. def >=(that: Deadline): Boolean
    Definition Classes
    Ordered
  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  10. def compare(that: Deadline): Int
    Definition Classes
    Deadline → Ordered
  11. def compareTo(that: Deadline): Int
    Definition Classes
    Ordered → Comparable
  12. val deadline: Time
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def expired: Boolean
  15. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  16. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  17. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  18. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  19. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  20. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. def productElementNames: Iterator[String]
    Definition Classes
    Product
  22. def remaining: Duration
  23. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  24. val timestamp: Time
  25. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  26. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  27. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from Ordered[Deadline]

Inherited from Comparable[Deadline]

Inherited from AnyRef

Inherited from Any

Ungrouped