Module io.helidon.config
Package io.helidon.config

Class FileSystemWatcher.Builder

java.lang.Object
io.helidon.config.FileSystemWatcher.Builder
All Implemented Interfaces:
Builder<FileSystemWatcher.Builder,FileSystemWatcher>, Supplier<FileSystemWatcher>
Enclosing class:
FileSystemWatcher
public static final class FileSystemWatcher.Builder extends Object implements Builder<FileSystemWatcher.Builder,FileSystemWatcher>
Fluent API builder for FileSystemWatcher.

  • Method Details

    • build

      public FileSystemWatcher build()
      Description copied from interface: Builder
      Build the instance from this builder.
      Specified by:
      build in interface Builder<FileSystemWatcher.Builder,FileSystemWatcher>
      Returns:
      instance of the built type

    • config

      public FileSystemWatcher.Builder config(Config metaConfig)
      Update this builder from meta configuration.

      Currently these options are supported:

      • initial-delay-millis - delay between the time this watcher is started and the time the first check is triggered
      • delay-millis - how often do we check the watcher service for changes
      As the watcher is implemented as non-blocking, a single watcher can be used to watch multiple directories using the same thread.
      Parameters:
      metaConfig - configuration of file system watcher
      Returns:
      updated builder instance

    • executor

      public FileSystemWatcher.Builder executor(ScheduledExecutorService executor)
      Executor to use for this watcher. The task is scheduled for regular execution and is only blocking a thread for the time needed to process changed files.
      Parameters:
      executor - executor service to use
      Returns:
      updated builder instance

    • schedule

      public FileSystemWatcher.Builder schedule(long initialDelay, long delay, TimeUnit timeUnit)
      Configure schedule of the file watcher.
      Parameters:
      initialDelay - initial delay before regular scheduling starts
      delay - delay between schedules
      timeUnit - time unit of the delays
      Returns:
      updated builer instance

    • addWatchServiceModifier

      public FileSystemWatcher.Builder addWatchServiceModifier(WatchEvent.Modifier modifier)
      Add a modifier of the watch service. Currently only implementation specific modifier are available, such as com.sun.nio.file.SensitivityWatchEventModifier.
      Parameters:
      modifier - modifier to use
      Returns:
      updated builder instance

    • watchServiceModifiers

      public FileSystemWatcher.Builder watchServiceModifiers(List<WatchEvent.Modifier> modifiers)
      Set modifiers to use for the watch service. Currently only implementation specific modifier are available, such as com.sun.nio.file.SensitivityWatchEventModifier.
      Parameters:
      modifiers - modifiers to use (replacing current configuration)
      Returns:
      updated builder instance