Packages

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

    Start with com.twitter.finagle.

    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 postgresql
    Definition Classes
    finagle
  • package types
    Definition Classes
    postgresql
  • Json
  • Kind
  • PgDate
  • PgNumeric
  • PgTime
  • PgType
  • ValueReads
  • ValueWrites

object PgTime

Some utilities to deal with Postgres' internal timestamp representations and boundaries.

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  1. final def !=(arg0: Any): Boolean
    Definition Classes
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  2. final def ##: Int
    Definition Classes
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  3. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  4. val Epoch: Instant

    Postgresql's Epoch is 2000-01-01T00:00:00Z Timestamp and TimestampTz store microseconds since this epoch as an 8-byte integer.

    Postgresql's Epoch is 2000-01-01T00:00:00Z Timestamp and TimestampTz store microseconds since this epoch as an 8-byte integer.

    NOTE: postgres used to use a floating point to represent this offset. To determine what internal representation it uses, use SHOW integer_datetimes; and this should print on. This parameter is set at compile time and cannot be changed later on.

  5. val Max: Instant

    The maximum timestamp value Postgresql can represent

  6. val Min: Instant

    The minimum timestamp value Postgresql can represent.

    The minimum timestamp value Postgresql can represent.

    NOTE: this happens to be the Julian calendar epoch, November 24, 4714 BC or -4713-11-24 in ISO NOTE: experimentation has shown that it actually supports up to -4713-12-31T23:59:59.999999

  7. final def asInstanceOf[T0]: T0
    Definition Classes
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  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  9. def durationAsUsecOffset(duration: Duration): Long

    Converts java.time.Duration to an offset (timestamp) from Postgres' epoch.

    Converts java.time.Duration to an offset (timestamp) from Postgres' epoch. Postgres timestamps are stored as microseconds since its epoch. The value can be negative.

  10. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  11. def equals(arg0: AnyRef): Boolean
    Definition Classes
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  12. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
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    @throws(classOf[java.lang.Throwable])
  13. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
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    Annotations
    @native()
  14. def hashCode(): Int
    Definition Classes
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    Annotations
    @native()
  15. def instantAsUsecOffset(instant: Instant): Long

    Converts a java.time.Instant to a timestamp value.

    Converts a java.time.Instant to a timestamp value. Postgres timestamps are stored as microseconds since its epoch. The value can be negative.

  16. final def isInstanceOf[T0]: Boolean
    Definition Classes
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  17. final def ne(arg0: AnyRef): Boolean
    Definition Classes
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  18. final def notify(): Unit
    Definition Classes
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    @native()
  19. final def notifyAll(): Unit
    Definition Classes
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    @native()
  20. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
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  21. def toString(): String
    Definition Classes
    AnyRef → Any
  22. def usecOffsetAsDuration(usecFromEpoch: Long): Duration

    Converts a timestamp value to a java.time.Duration from the Postgres' epoch.

    Converts a timestamp value to a java.time.Duration from the Postgres' epoch. Postgres timestamps are stored as microseconds since its epoch. The value can be negative.

  23. def usecOffsetAsInstant(usecFromEpoch: Long): Instant

    Converts a timestamp value to a java.time.Instant.

    Converts a timestamp value to a java.time.Instant. Postgres timestamps are stored as microseconds since its epoch. The value can be negative.

  24. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  25. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
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    Annotations
    @throws(classOf[java.lang.InterruptedException])
  26. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

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