FileIO

Creates a Source from a files contents. Emitted elements are chunkSize sized pekko.util.ByteString elements, except the final element, which will be up to chunkSize in size.

You can configure the default dispatcher for this Source by changing the pekko.stream.materializer.blocking-io-dispatcher or set it for a given Source by using pekko.stream.ActorAttributes.

It materializes a Future of IOResult containing the number of bytes read from the source file upon completion, and a possible exception if IO operation was not completed successfully. Note that bytes having been read by the source does not give any guarantee that the bytes were seen by downstream stages.

Creates a Source from a files contents. Emitted elements are chunkSize sized pekko.util.ByteString elements, except the final element, which will be up to chunkSize in size.

You can configure the default dispatcher for this Source by changing the pekko.stream.materializer.blocking-io-dispatcher or set it for a given Source by using pekko.stream.ActorAttributes.

It materializes a Future of IOResult containing the number of bytes read from the source file upon completion, and a possible exception if IO operation was not completed successfully. Note that bytes having been read by the source does not give any guarantee that the bytes were seen by downstream stages.

Creates a Sink which writes incoming ByteString elements to the given file path. Overwrites existing files by truncating their contents as default.

Materializes a Future of IOResult that will be completed with the size of the file (in bytes) at the streams completion, and a possible exception if IO operation was not completed successfully.

This source is backed by an Actor which will use the dedicated pekko.stream.blocking-io-dispatcher, unless configured otherwise by using pekko.stream.ActorAttributes.

Accepts as arguments a set of java.nio.file.StandardOpenOption, which will determine the underlying behavior when writing the file. If java.nio.file.StandardOpenOption.SYNC is provided, every update to the file's content be written synchronously to the underlying storage device. Otherwise (the default), the write will be written to the storage device asynchronously by the OS, and may not be stored durably on the storage device at the time the stream completes.

Creates a Sink which writes incoming ByteString elements to the given file path. Overwrites existing files by truncating their contents as default.

Materializes a Future of IOResult that will be completed with the size of the file (in bytes) at the streams completion, and a possible exception if IO operation was not completed successfully.

This source is backed by an Actor which will use the dedicated pekko.stream.blocking-io-dispatcher, unless configured otherwise by using pekko.stream.ActorAttributes.

Accepts as arguments a set of java.nio.file.StandardOpenOption, which will determine the underlying behavior when writing the file. If java.nio.file.StandardOpenOption.SYNC is provided, every update to the file's content be written synchronously to the underlying storage device. Otherwise (the default), the write will be written to the storage device asynchronously by the OS, and may not be stored durably on the storage device at the time the stream completes.

Creates a Source from a files contents. Emitted elements are chunkSize sized pekko.util.ByteString elements, except the final element, which will be up to chunkSize in size.

You can configure the default dispatcher for this Source by changing the pekko.stream.materializer.blocking-io-dispatcher or set it for a given Source by using pekko.stream.ActorAttributes.

It materializes a Future of IOResult containing the number of bytes read from the source file upon completion, and a possible exception if IO operation was not completed successfully. Note that bytes having been read by the source does not give any guarantee that the bytes were seen by downstream stages.

Creates a Sink which writes incoming ByteString elements to the given file. Overwrites existing files by truncating their contents as default.

Materializes a Future of IOResult that will be completed with the size of the file (in bytes) at the streams completion, and a possible exception if IO operation was not completed successfully.

This source is backed by an Actor which will use the dedicated pekko.stream.blocking-io-dispatcher, unless configured otherwise by using pekko.stream.ActorAttributes.