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Add and reuse example for FileIO stream operator. (#25660)

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Tzu-Chiao Yeh 2018-09-24 23:50:27 +08:00 • committed by Arnout Engelen
parent 83b30f1ed2
commit f06595dd5d
9 changed files with 121 additions and 14 deletions
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31
akka-docs/src/test/java/jdocs/stream/io/StreamFileDocTest.java
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@ -11,10 +11,12 @@ import java.io.IOException;
import java.util.concurrent.CompletionStage;
import akka.Done;
import akka.NotUsed;
import akka.actor.ActorSystem;
import akka.stream.ActorAttributes;
import akka.stream.javadsl.Sink;
import akka.stream.javadsl.FileIO;
import akka.stream.javadsl.Source;
import jdocs.AbstractJavaTest;
import jdocs.stream.SilenceSystemOut;
import akka.testkit.javadsl.TestKit;
@ -48,9 +50,16 @@ public class StreamFileDocTest extends AbstractJavaTest {
final SilenceSystemOut.System System = SilenceSystemOut.get();
{
//#file-source
final Path file = Paths.get("example.csv");
//#file-source
// Using 4 spaces here to align with code in try block below.
//#file-source
final Path file = Paths.get("example.csv");
//#file-source
}
{
//#file-sink
final Path file = Paths.get("greeting.txt");
//#file-sink
}
@Test
@ -87,5 +96,21 @@ public class StreamFileDocTest extends AbstractJavaTest {
}
}
@Test
public void demontrateFileIOWriting() throws IOException {
final Path file = Files.createTempFile(getClass().getName(), ".tmp");
try {
//#file-sink
Sink<ByteString, CompletionStage<IOResult>> fileSink = FileIO.toPath(file);
Source<String, NotUsed> textSource = Source.single("Hello Akka Stream!");
CompletionStage<IOResult> ioResult = textSource
.map(ByteString::fromString)
.runWith(fileSink, mat);
//#file-sink
} finally {
Files.delete(file);
}
}
}