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.

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 http

Definition Classes: finagle

package codec

Definition Classes: http

package collection

Definition Classes: http

package cookie

Definition Classes: http

AuthenticatedIdentityContext

Chunk

CookieMap

CookieMapVersionSpecific

HeaderMapVersionSpecific

KerberosAuthenticationFilter

LoadBalancedHostFilter

ParamMapVersionSpecific

TooLongMessageException

Uri

Version

defaultClientProtocol

defaultServerProtocol

serverErrorsAsFailures

package exp

Definition Classes: http

package filter

Definition Classes: http

package headers

Definition Classes: http

package param

Definition Classes: http

package path

Definition Classes: http

package service

Definition Classes: http

package util

Definition Classes: http

com.twitter.finagle.http

defaultServerProtocol

object defaultServerProtocol extends GlobalFlag[Protocol]

GlobalFlag that can be used to configure the default protocol used when creating a new com.twitter.finagle.Http.Server.

Linear Supertypes

GlobalFlag[Protocol], Flag[Protocol], AnyRef, Any

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final def !=(arg0: Any): Boolean
Definition Classes
AnyRef → Any
final def ##: Int
Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean
Definition Classes
AnyRef → Any
def apply(): Protocol
Definition Classes
Flag
final def asInstanceOf[T0]: T0
Definition Classes
Any
def clone(): AnyRef
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protected[lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
def defaultString(): String
Definition Classes
Flag
final def eq(arg0: AnyRef): Boolean
Definition Classes
AnyRef
def equals(arg0: AnyRef): Boolean
Definition Classes
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def finalize(): Unit
Attributes
protected[lang]
Definition Classes
AnyRef
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@throws(classOf[java.lang.Throwable])
def get: Option[Protocol]
Definition Classes
Flag
final def getClass(): Class[_ <: AnyRef]
Definition Classes
AnyRef → Any
Annotations
@native()
def getGlobalFlag: Flag[_]
Definition Classes
GlobalFlag
def getUnparsed: Option[String]
Definition Classes
Flag
def getValue: Option[Protocol]
Attributes
protected
Definition Classes
GlobalFlag → Flag
def getWithDefault: Option[Protocol]
Definition Classes
Flag
def getWithDefaultUnparsed: Option[String]
Definition Classes
Flag
def hashCode(): Int
Definition Classes
AnyRef → Any
Annotations
@native()
val help: String
Definition Classes
Flag
def isDefined: Boolean
Definition Classes
Flag
final def isInstanceOf[T0]: Boolean
Definition Classes
Any
def let[R](t: Protocol)(f: => R): R
Definition Classes
Flag
def letClear[R](f: => R): R
Definition Classes
Flag
def letParse[R](arg: String)(f: => R): R
Definition Classes
Flag
val name: String
Definition Classes
GlobalFlag → Flag
final def ne(arg0: AnyRef): Boolean
Definition Classes
AnyRef
def noArgumentOk: Boolean
Definition Classes
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final def notify(): Unit
Definition Classes
AnyRef
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@native()
final def notifyAll(): Unit
Definition Classes
AnyRef
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@native()
def parse(): Unit
Definition Classes
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def parse(raw: String): Unit
Definition Classes
Flag
def parsingDone: Boolean
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protected[this]
Definition Classes
GlobalFlag → Flag
def reset(): Unit
Definition Classes
Flag
final def synchronized[T0](arg0: => T0): T0
Definition Classes
AnyRef
def toString(): String
Definition Classes
Flag → AnyRef → Any
def usageString: String
Definition Classes
Flag
final def wait(): Unit
Definition Classes
AnyRef
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@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long, arg1: Int): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()

Packages

defaultServerProtocol

object defaultServerProtocol extends GlobalFlag[Protocol]

Value Members

Inherited from GlobalFlag[Protocol]

Inherited from Flag[Protocol]

Inherited from AnyRef

Inherited from Any

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Packages

defaultServerProtocol

object defaultServerProtocol extends GlobalFlag[Protocol]

Value Members

Inherited from GlobalFlag[Protocol]

Inherited from Flag[Protocol]

Inherited from AnyRef

Inherited from Any

Ungrouped

defaultServerProtocol