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=str #16652 Add java docs for 'Working with streaming IO'

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This commit is contained in:
Patrik Nordwall 2015-02-05 15:53:49 +01:00
parent 0a43aa2693
commit 20f4aeb2fc
3 changed files with 117 additions and 31 deletions
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19
akka-docs-dev/rst/scala/code/docs/stream/StreamTcpDocSpec.scala
View file

@ -5,15 +5,17 @@ package docs.stream
import java.net.InetSocketAddress
import java.util.concurrent.atomic.AtomicReference
import akka.actor.ActorSystem
import akka.stream.ActorFlowMaterializer
import akka.stream.scaladsl.Concat
import akka.stream.scaladsl.Flow
import akka.stream.scaladsl.FlowGraphImplicits
import akka.stream.scaladsl.Source
import akka.stream.scaladsl.StreamTcp
import akka.stream.scaladsl.StreamTcp._
import akka.stream.scaladsl.UndefinedSink
import akka.stream.scaladsl.UndefinedSource
import akka.stream.stage.{ PushStage, Directive, Context, PushPullStage }
import akka.stream.stage.{ PushStage, Directive, Context }
import akka.stream.testkit.AkkaSpec
import akka.testkit.TestProbe
import akka.util.ByteString
@ -22,15 +24,7 @@ import cookbook.RecipeParseLines
class StreamTcpDocSpec extends AkkaSpec {
implicit val ec = system.dispatcher
//#setup
import akka.stream.ActorFlowMaterializer
import akka.stream.scaladsl.StreamTcp
import akka.stream.scaladsl.StreamTcp._
implicit val sys = ActorSystem("stream-tcp-system")
implicit val mat = ActorFlowMaterializer()
//#setup
// silence sysout
def println(s: String) = ()
@ -51,7 +45,7 @@ class StreamTcpDocSpec extends AkkaSpec {
val echo = Flow[ByteString]
.transform(() => RecipeParseLines.parseLines("\n", maximumLineBytes = 256))
.map(_ ++ "!!!\n")
.map(_ + "!!!\n")
.map(ByteString(_))
connection.handleWith(echo)
@ -93,7 +87,7 @@ class StreamTcpDocSpec extends AkkaSpec {
.map { command ⇒ serverProbe.ref ! command; command }
//#welcome-banner-chat-server
.transform(() ⇒ commandParser)
.map(_ ++ "\n")
.map(_ + "\n")
.map(ByteString(_))
val concat = Concat[ByteString]
@ -135,7 +129,6 @@ class StreamTcpDocSpec extends AkkaSpec {
.transform(() => RecipeParseLines.parseLines("\n", maximumLineBytes = 256))
.map(text => println("Server: " + text))
.map(_ => readLine("> "))
//#repl-client
.transform(() ⇒ replParser)
connection.handleWith(repl)

34
akka-docs-dev/rst/scala/code/docs/stream/cookbook/RecipeParseLines.scala
View file

@ -63,25 +63,23 @@ object RecipeParseLines {
// No matching character, we need to accumulate more bytes into the buffer
nextPossibleMatch = buffer.size
parsedLinesSoFar
} else if (possibleMatchPos + separatorBytes.size > buffer.size) {
// We have found a possible match (we found the first character of the terminator
// sequence) but we don't have yet enough bytes. We remember the position to
// retry from next time.
nextPossibleMatch = possibleMatchPos
parsedLinesSoFar
} else {
if (possibleMatchPos + separatorBytes.size > buffer.size) {
// We have found a possible match (we found the first character of the terminator
// sequence) but we don't have yet enough bytes. We remember the position to
// retry from next time.
nextPossibleMatch = possibleMatchPos
parsedLinesSoFar
if (buffer.slice(possibleMatchPos, possibleMatchPos + separatorBytes.size)
== separatorBytes) {
// Found a match
val parsedLine = buffer.slice(0, possibleMatchPos).utf8String
buffer = buffer.drop(possibleMatchPos + separatorBytes.size)
nextPossibleMatch -= possibleMatchPos + separatorBytes.size
doParse(parsedLinesSoFar :+ parsedLine)
} else {
if (buffer.slice(possibleMatchPos, possibleMatchPos + separatorBytes.size)
== separatorBytes) {
// Found a match
val parsedLine = buffer.slice(0, possibleMatchPos).utf8String
buffer = buffer.drop(possibleMatchPos + separatorBytes.size)
nextPossibleMatch -= possibleMatchPos + separatorBytes.size
doParse(parsedLinesSoFar :+ parsedLine)
} else {
nextPossibleMatch += 1
doParse(parsedLinesSoFar)
}
nextPossibleMatch += 1
doParse(parsedLinesSoFar)
}
}
@ -90,4 +88,4 @@ object RecipeParseLines {
}
//#parse-lines
}
}