Packages

trait CanManage[-R] extends AnyRef

For encapsulating the management logic of a resource.

Default logic for any java.lang.AutoClosable is provided by the companion object, which may be imported into current scope as implicits.

Other types may be provided in scope by the user. For example

import java.util.concurrent._
import io.tmos.arm.Implicits._

implicit val manager: CanManage[ExecutorService] = new CanManage[ExecutorService] {
  override def onFinally(pool: ExecutorService): Unit = {
    pool.shutdown() // Disable new tasks from being submitted
    try {
      if (!pool.awaitTermination(10, TimeUnit.SECONDS)) { // wait for normal termination
        pool.shutdownNow() // force terminate
        if (!pool.awaitTermination(10, TimeUnit.SECONDS)) // wait for forced termination
          throw new RuntimeException("ExecutorService did not terminate")
      }
    } catch {
      case _: InterruptedException =>
        pool.shutdownNow() // (Re-)Cancel if current thread also interrupted
        Thread.currentThread().interrupt() // Preserve interrupt status
    }
  }
  override def onException(r: ExecutorService): Unit = {}
}

for (manage(executorService) <- Executors.newSingleThreadExecutor.manage) { ... }
R

the type of the resource to manage

Linear Supertypes
AnyRef, Any
Known Subclasses
CloseOnException, CloseOnFinally
Ordering
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Inherited
  1. CanManage
  2. AnyRef
  3. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. All

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from CanManage[R] to any2stringadd[CanManage[R]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (CanManage[R], B)
    Implicit
    This member is added by an implicit conversion from CanManage[R] to ArrowAssoc[CanManage[R]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  7. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  8. def ensuring(cond: (CanManage[R]) ⇒ Boolean, msg: ⇒ Any): CanManage[R]
    Implicit
    This member is added by an implicit conversion from CanManage[R] to Ensuring[CanManage[R]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  9. def ensuring(cond: (CanManage[R]) ⇒ Boolean): CanManage[R]
    Implicit
    This member is added by an implicit conversion from CanManage[R] to Ensuring[CanManage[R]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: Boolean, msg: ⇒ Any): CanManage[R]
    Implicit
    This member is added by an implicit conversion from CanManage[R] to Ensuring[CanManage[R]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean): CanManage[R]
    Implicit
    This member is added by an implicit conversion from CanManage[R] to Ensuring[CanManage[R]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  13. def equals(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  14. def finalize(): Unit
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @throws( classOf[java.lang.Throwable] )
  15. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from CanManage[R] to StringFormat[CanManage[R]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  16. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  17. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  18. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  19. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  20. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  21. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  22. def onException(r: R): Unit

    Execution hook called when an exception is thrown from the managed block.

    Execution hook called when an exception is thrown from the managed block. This is executed prior to [onFinally].

    Implementors are free to permit exceptions thrown from this method, however note that any new exceptions thrown will be added as a suppressed exception of the currently throwing exception. Thus it is strongly advised that implementors do not throw any exceptions if it would cause problems for an exception to be suppressed.

    r

    the resource being managed

  23. def onFinally(r: R): Unit

    Execution hook called after the managed block.

    Execution hook called after the managed block.

    This execution hook is called regardless if an exception is thrown.

    Usually resources are released or closed in the lifecycle.

    Implementors are free to permit exceptions thrown from this method, however it is strongly advised to not have the method throw java.lang.InterruptedException. This exception interacts with a thread's interrupted status, and runtime misbehavior is likely to occur if an java.lang.InterruptedException is suppressed. More generally, if it would cause problems for an exception to be suppressed, the AutoCloseable.close method should not throw it."

    r

    the resource being managed

  24. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  25. def toString(): String
    Definition Classes
    AnyRef → Any
  26. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  27. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  28. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  29. def →[B](y: B): (CanManage[R], B)
    Implicit
    This member is added by an implicit conversion from CanManage[R] to ArrowAssoc[CanManage[R]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd from CanManage[R] to any2stringadd[CanManage[R]]

Inherited by implicit conversion StringFormat from CanManage[R] to StringFormat[CanManage[R]]

Inherited by implicit conversion Ensuring from CanManage[R] to Ensuring[CanManage[R]]

Inherited by implicit conversion ArrowAssoc from CanManage[R] to ArrowAssoc[CanManage[R]]

Ungrouped