java.lang.Object
- akka.stream.Attributes

All Implemented Interfaces:

java.io.Serializable, scala.Equals, scala.Product, scala.Serializable
```
public final class Attributes
extends java.lang.Object
implements scala.Product, scala.Serializable
```
Note that this must only be used during traversal building and not during materialization as it will then always return true because of the defaults from the ActorMaterializerSettings INTERNAL API

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`Attributes.AsyncBoundary$`
`static interface`	`Attributes.Attribute`	Note that more attributes for the `ActorMaterializer` are defined in `ActorAttributes`.
`static class`	`Attributes.CancellationStrategy`
`static class`	`Attributes.CancellationStrategy$`
`static class`	`Attributes.InputBuffer`
`static class`	`Attributes.InputBuffer$`
`static class`	`Attributes.LogLevels`
`static class`	`Attributes.LogLevels$`	Use to disable logging on certain operations when configuring `logLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)`
`static interface`	`Attributes.MandatoryAttribute`
`static class`	`Attributes.Name`
`static class`	`Attributes.Name$`

Constructor Summary

Constructors
Constructor Description

Attributes(scala.collection.immutable.List<Attributes.Attribute> attributeList)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static scala.collection.immutable.List<Attributes.Attribute>`	`$lessinit$greater$default$1()`
`Attributes`	`and(Attributes other)`	Adds given attributes.
`Attributes`	`and(Attributes.Attribute other)`	Adds given attribute.
`static Attributes`	`apply(Attributes.Attribute attribute)`	INTERNAL API
`static Attributes`	`apply(scala.collection.immutable.List<Attributes.Attribute> attributeList)`
`static scala.collection.immutable.List<Attributes.Attribute>`	`apply$default$1()`
`static Attributes`	`asyncBoundary()`
`scala.collection.immutable.List<Attributes.Attribute>`	`attributeList()`
`static akka.stream.Attributes.CancellationStrategy.Strategy`	`cancellationStrategyAfterDelay(scala.concurrent.duration.FiniteDuration delay, akka.stream.Attributes.CancellationStrategy.Strategy strategy)`	Strategy that allows to delay any action when `cancelStage` is invoked.
`static akka.stream.Attributes.CancellationStrategy.Strategy`	`cancellationStrategyCompleteState()`
`static akka.stream.Attributes.CancellationStrategy.Strategy`	`cancellationStrategyFailStage()`	Strategy that treats `cancelStage` the same as `failStage`, i.e.
`boolean`	`canEqual(java.lang.Object x$1)`
`boolean`	`contains(Attributes.Attribute attr)`	Test whether the given attribute is contained within this attributes list.
`Attributes`	`copy(scala.collection.immutable.List<Attributes.Attribute> attributeList)`
`scala.collection.immutable.List<Attributes.Attribute>`	`copy$default$1()`
`static Attributes`	`createLogLevels(Logging.LogLevel onElement)`	Java API
`static Attributes`	`createLogLevels(Logging.LogLevel onElement, Logging.LogLevel onFinish, Logging.LogLevel onFailure)`	Java API
`boolean`	`equals(java.lang.Object x$1)`
`static java.lang.String`	`extractName(TraversalBuilder builder, java.lang.String default_)`	Compute a name by concatenating all Name attributes that the given module has, returning the given default value if none are found.
`<T extends Attributes.Attribute> scala.collection.immutable.List<T>`	`filtered(scala.reflect.ClassTag<T> evidence$4)`	Scala API: Get all attributes of a given type (or subtypes thereof).
`<T extends Attributes.Attribute> scala.Option<T>`	`get(scala.reflect.ClassTag<T> evidence$2)`	Scala API: Get the most specific attribute value for a given Attribute type or subclass thereof.
`<T extends Attributes.Attribute> T`	`get(T default_, scala.reflect.ClassTag<T> evidence$1)`	Scala API: Get the most specific attribute value for a given Attribute type or subclass thereof or if no such attribute exists, return a default value.
`<T extends Attributes.Attribute> java.util.Optional<T>`	`getAttribute(java.lang.Class<T> c)`	Java API: Get the most specific attribute value for a given Attribute type or subclass thereof.
`<T extends Attributes.Attribute> T`	`getAttribute(java.lang.Class<T> c, T default_)`	Java API: Get the most specific attribute value for a given Attribute type or subclass thereof.
`java.util.List<Attributes.Attribute>`	`getAttributeList()`	Java API
`<T extends Attributes.Attribute> java.util.List<T>`	`getAttributeList(java.lang.Class<T> c)`	Java API: Get all attributes of a given `Class` or subclass thereof.
`<T extends Attributes.Attribute> scala.Option<T>`	`getFirst(scala.reflect.ClassTag<T> evidence$6)`	Deprecated. Attributes should always be most specific, use get[T].
`<T extends Attributes.Attribute> T`	`getFirst(T default_, scala.reflect.ClassTag<T> evidence$5)`	Deprecated. Attributes should always be most specific, use get[T].
`<T extends Attributes.Attribute> java.util.Optional<T>`	`getFirstAttribute(java.lang.Class<T> c)`	Deprecated. Attributes should always be most specific, use get[T].
`<T extends Attributes.Attribute> T`	`getFirstAttribute(java.lang.Class<T> c, T default_)`	Deprecated. Attributes should always be most specific, use getAttribute[T].
`<T extends Attributes.MandatoryAttribute> T`	`getMandatoryAttribute(java.lang.Class<T> c)`	Java API: Get the most specific of one of the mandatory attributes.
`int`	`hashCode()`
`static Attributes`	`inputBuffer(int initial, int max)`	Specifies the initial and maximum size of the input buffer.
`boolean`	`isAsync()`
`static Logging.LogLevel`	`logLevelDebug()`	Use to enable logging at DEBUG level for certain operations when configuring `createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)`
`static Logging.LogLevel`	`logLevelError()`	Use to enable logging at ERROR level for certain operations when configuring `createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)`
`static Logging.LogLevel`	`logLevelInfo()`	Use to enable logging at INFO level for certain operations when configuring `createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)`
`static Logging.LogLevel`	`logLevelOff()`
`static Attributes`	`logLevels(Logging.LogLevel onElement, Logging.LogLevel onFinish, Logging.LogLevel onFailure)`	Configures `log()` operator log-levels to be used when logging.
`static Logging.LogLevel`	`logLevels$default$1()`
`static Logging.LogLevel`	`logLevels$default$2()`
`static Logging.LogLevel`	`logLevels$default$3()`
`static Logging.LogLevel`	`logLevelWarning()`	Use to enable logging at WARNING level for certain operations when configuring `createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)`
`<T extends Attributes.MandatoryAttribute> T`	`mandatoryAttribute(scala.reflect.ClassTag<T> evidence$3)`	Scala API: Get the most specific of one of the mandatory attributes.
`static Attributes`	`name(java.lang.String name)`	Specifies the name of the operation.
`scala.Option<java.lang.String>`	`nameLifted()`	Extracts Name attributes and concatenates them.
`java.lang.String`	`nameOrDefault(java.lang.String default_)`	INTERNAL API
`java.lang.String`	`nameOrDefault$default$1()`
`static Attributes`	`none()`
`int`	`productArity()`
`java.lang.Object`	`productElement(int x$1)`
`scala.collection.Iterator<java.lang.Object>`	`productIterator()`
`java.lang.String`	`productPrefix()`
`java.lang.String`	`toString()`
`static scala.Option<scala.collection.immutable.List<Attributes.Attribute>>`	`unapply(Attributes x$0)`

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Attributes
```
public Attributes(scala.collection.immutable.List<Attributes.Attribute> attributeList)
```
- Method Detail
  - $lessinit$greater$default$1
```
public static scala.collection.immutable.List<Attributes.Attribute> $lessinit$greater$default$1()
```
  - cancellationStrategyCompleteState
```
public static akka.stream.Attributes.CancellationStrategy.Strategy cancellationStrategyCompleteState()
```
  - cancellationStrategyFailStage
```
public static akka.stream.Attributes.CancellationStrategy.Strategy cancellationStrategyFailStage()
```
    Strategy that treats cancelStage the same as failStage, i.e. all inlets are cancelled (propagating the cancellation cause) and all outlets are failed with an SiblingDownstreamWasCancelled exception.
    
    Returns:
    
    (undocumented)
  - cancellationStrategyAfterDelay
```
public static akka.stream.Attributes.CancellationStrategy.Strategy cancellationStrategyAfterDelay(scala.concurrent.duration.FiniteDuration delay,
                                                                                                  akka.stream.Attributes.CancellationStrategy.Strategy strategy)
```
    Strategy that allows to delay any action when cancelStage is invoked.
    The idea of this strategy is to delay any action on cancellation because it is expected that the stage is completed through another path in the meantime. The downside is that a stage and a stream may live longer than expected if no such signal is received and cancellation is invoked later on. In streams with many stages that all apply this strategy, this strategy might significantly delay the propagation of a cancellation signal because each upstream stage might impose such a delay. During this time, the stream will be mostly "silent", i.e. it cannot make progress because of backpressure, but you might still be able observe a long delay at the ultimate source.
    
    Parameters:
    
    delay - (undocumented)
    
    strategy - (undocumented)
    
    Returns:
    
    (undocumented)
  - logLevelOff
```
public static Logging.LogLevel logLevelOff()
```
  - logLevelError
```
public static Logging.LogLevel logLevelError()
```
    Use to enable logging at ERROR level for certain operations when configuring createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)
  - logLevelWarning
```
public static Logging.LogLevel logLevelWarning()
```
    Use to enable logging at WARNING level for certain operations when configuring createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)
  - logLevelInfo
```
public static Logging.LogLevel logLevelInfo()
```
    Use to enable logging at INFO level for certain operations when configuring createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)
  - logLevelDebug
```
public static Logging.LogLevel logLevelDebug()
```
    Use to enable logging at DEBUG level for certain operations when configuring createLogLevels(akka.event.Logging.LogLevel, akka.event.Logging.LogLevel, akka.event.Logging.LogLevel)
  - apply
```
public static Attributes apply(Attributes.Attribute attribute)
```
    INTERNAL API
    
    Parameters:
    
    attribute - (undocumented)
    
    Returns:
    
    (undocumented)
  - apply$default$1
```
public static scala.collection.immutable.List<Attributes.Attribute> apply$default$1()
```
  - none
```
public static Attributes none()
```
  - asyncBoundary
```
public static Attributes asyncBoundary()
```
  - name
```
public static Attributes name(java.lang.String name)
```
    Specifies the name of the operation. If the name is null or empty the name is ignored, i.e. none() is returned.
    When using this method the name is encoded with URLEncoder with UTF-8 because the name is sometimes used as part of actor name. If that is not desired the name can be added in it's raw format using .addAttributes(Attributes(Name(name))).
    
    Parameters:
    
    name - (undocumented)
    
    Returns:
    
    (undocumented)
  - inputBuffer
```
public static Attributes inputBuffer(int initial,
                                     int max)
```
    Specifies the initial and maximum size of the input buffer.
    
    Parameters:
    
    initial - (undocumented)
    
    max - (undocumented)
    
    Returns:
    
    (undocumented)
  - createLogLevels
```
public static Attributes createLogLevels(Logging.LogLevel onElement,
                                         Logging.LogLevel onFinish,
                                         Logging.LogLevel onFailure)
```
    Java API
    Configures log() operator log-levels to be used when logging. Logging a certain operation can be completely disabled by using logLevelOff().
    
    Parameters:
    
    onElement - (undocumented)
    
    onFinish - (undocumented)
    
    onFailure - (undocumented)
    
    Returns:
    
    (undocumented)
  - createLogLevels
```
public static Attributes createLogLevels(Logging.LogLevel onElement)
```
    Java API
    Configures log() operator log-levels to be used when logging onElement. Logging a certain operation can be completely disabled by using logLevelOff().
    
    Parameters:
    
    onElement - (undocumented)
    
    Returns:
    
    (undocumented)
  - logLevels
```
public static Attributes logLevels(Logging.LogLevel onElement,
                                   Logging.LogLevel onFinish,
                                   Logging.LogLevel onFailure)
```
    Configures log() operator log-levels to be used when logging. Logging a certain operation can be completely disabled by using LogLevels.Off.
    See Attributes.createLogLevels for Java API
    
    Parameters:
    
    onElement - (undocumented)
    
    onFinish - (undocumented)
    
    onFailure - (undocumented)
    
    Returns:
    
    (undocumented)
  - logLevels$default$1
```
public static Logging.LogLevel logLevels$default$1()
```
  - logLevels$default$2
```
public static Logging.LogLevel logLevels$default$2()
```
  - logLevels$default$3
```
public static Logging.LogLevel logLevels$default$3()
```
  - extractName
```
public static java.lang.String extractName(TraversalBuilder builder,
                                           java.lang.String default_)
```
    Compute a name by concatenating all Name attributes that the given module has, returning the given default value if none are found.
    
    Parameters:
    
    builder - (undocumented)
    
    default_ - (undocumented)
    
    Returns:
    
    (undocumented)
  - apply
```
public static Attributes apply(scala.collection.immutable.List<Attributes.Attribute> attributeList)
```
  - unapply
```
public static scala.Option<scala.collection.immutable.List<Attributes.Attribute>> unapply(Attributes x$0)
```
  - attributeList
```
public scala.collection.immutable.List<Attributes.Attribute> attributeList()
```
  - isAsync
```
public boolean isAsync()
```
  - getAttribute
```
public <T extends Attributes.Attribute> T getAttribute(java.lang.Class<T> c,
                                                       T default_)
```
    Java API: Get the most specific attribute value for a given Attribute type or subclass thereof. If no such attribute exists, return a default value.
    The most specific value is the value that was added closest to the graph or operator itself or if the same attribute was added multiple times to the same graph, the last to be added.
    This is the expected way for operators to access attributes.
    
    Parameters:
    
    c - (undocumented)
    
    default_ - (undocumented)
    
    Returns:
    
    (undocumented)
  - getAttribute
```
public <T extends Attributes.Attribute> java.util.Optional<T> getAttribute(java.lang.Class<T> c)
```
    Java API: Get the most specific attribute value for a given Attribute type or subclass thereof.
    The most specific value is the value that was added closest to the graph or operator itself or if the same attribute was added multiple times to the same graph, the last to be added.
    This is the expected way for operators to access attributes.
    
    Parameters:
    
    c - (undocumented)
    
    Returns:
    
    (undocumented)
  - get
```
public <T extends Attributes.Attribute> T get(T default_,
                                              scala.reflect.ClassTag<T> evidence$1)
```
    Scala API: Get the most specific attribute value for a given Attribute type or subclass thereof or if no such attribute exists, return a default value.
    The most specific value is the value that was added closest to the graph or operator itself or if the same attribute was added multiple times to the same graph, the last to be added.
    This is the expected way for operators to access attributes.
    
    Parameters:
    
    default_ - (undocumented)
    
    evidence$1 - (undocumented)
    
    Returns:
    
    (undocumented)
  - get
```
public <T extends Attributes.Attribute> scala.Option<T> get(scala.reflect.ClassTag<T> evidence$2)
```
    Scala API: Get the most specific attribute value for a given Attribute type or subclass thereof.
    The most specific value is the value that was added closest to the graph or operator itself or if the same attribute was added multiple times to the same graph, the last to be added.
    This is the expected way for operators to access attributes.
    
    Parameters:
    
    evidence$2 - (undocumented)
    
    Returns:
    
    (undocumented)
  - mandatoryAttribute
```
public <T extends Attributes.MandatoryAttribute> T mandatoryAttribute(scala.reflect.ClassTag<T> evidence$3)
```
    Scala API: Get the most specific of one of the mandatory attributes. Mandatory attributes are guaranteed to always be among the attributes when the attributes are coming from a materialization.
    
    Parameters:
    
    evidence$3 - (undocumented)
    
    Returns:
    
    (undocumented)
  - getMandatoryAttribute
```
public <T extends Attributes.MandatoryAttribute> T getMandatoryAttribute(java.lang.Class<T> c)
```
    Java API: Get the most specific of one of the mandatory attributes. Mandatory attributes are guaranteed to always be among the attributes when the attributes are coming from a materialization.
    
    Parameters:
    
    c - A class that is a subtype of Attributes.MandatoryAttribute
    
    Returns:
    
    (undocumented)
  - and
```
public Attributes and(Attributes other)
```
    Adds given attributes. Added attributes are considered more specific than already existing attributes of the same type.
    
    Parameters:
    
    other - (undocumented)
    
    Returns:
    
    (undocumented)
  - and
```
public Attributes and(Attributes.Attribute other)
```
    Adds given attribute. Added attribute is considered more specific than already existing attributes of the same type.
    
    Parameters:
    
    other - (undocumented)
    
    Returns:
    
    (undocumented)
  - nameLifted
```
public scala.Option<java.lang.String> nameLifted()
```
    Extracts Name attributes and concatenates them.
    
    Returns:
    
    (undocumented)
  - nameOrDefault
```
public java.lang.String nameOrDefault(java.lang.String default_)
```
    INTERNAL API
    
    Parameters:
    
    default_ - (undocumented)
    
    Returns:
    
    (undocumented)
  - nameOrDefault$default$1
```
public java.lang.String nameOrDefault$default$1()
```
  - contains
```
public boolean contains(Attributes.Attribute attr)
```
    Test whether the given attribute is contained within this attributes list.
    Note that operators in general should not inspect the whole hierarchy but instead use get to get the most specific attribute value.
    
    Parameters:
    
    attr - (undocumented)
    
    Returns:
    
    (undocumented)
  - getAttributeList
```
public java.util.List<Attributes.Attribute> getAttributeList()
```
    Java API
    The list is ordered with the most specific attribute first, least specific last. Note that the order was the opposite in Akka 2.4.x.
    Note that operators in general should not inspect the whole hierarchy but instead use get to get the most specific attribute value.
    
    Returns:
    
    (undocumented)
  - getAttributeList
```
public <T extends Attributes.Attribute> java.util.List<T> getAttributeList(java.lang.Class<T> c)
```
    Java API: Get all attributes of a given Class or subclass thereof.
    The list is ordered with the most specific attribute first, least specific last. Note that the order was the opposite in Akka 2.4.x.
    Note that operators in general should not inspect the whole hierarchy but instead use get to get the most specific attribute value.
    
    Parameters:
    
    c - (undocumented)
    
    Returns:
    
    (undocumented)
  - filtered
```
public <T extends Attributes.Attribute> scala.collection.immutable.List<T> filtered(scala.reflect.ClassTag<T> evidence$4)
```
    Scala API: Get all attributes of a given type (or subtypes thereof).
    Note that operators in general should not inspect the whole hierarchy but instead use get to get the most specific attribute value.
    The list is ordered with the most specific attribute first, least specific last. Note that the order was the opposite in Akka 2.4.x.
    
    Parameters:
    
    evidence$4 - (undocumented)
    
    Returns:
    
    (undocumented)
  - getFirstAttribute
```
public <T extends Attributes.Attribute> T getFirstAttribute(java.lang.Class<T> c,
                                                            T default_)
```
    Deprecated.
    Attributes should always be most specific, use getAttribute[T]. Since 2.5.7.
    
    Java API: Get the least specific attribute (added first) of a given Class or subclass thereof. If no such attribute exists the default value is returned.
    
    Parameters:
    
    c - (undocumented)
    
    default_ - (undocumented)
    
    Returns:
    
    (undocumented)
  - getFirstAttribute
```
public <T extends Attributes.Attribute> java.util.Optional<T> getFirstAttribute(java.lang.Class<T> c)
```
    Deprecated.
    Attributes should always be most specific, use get[T]. Since 2.5.7.
    
    Java API: Get the least specific attribute (added first) of a given Class or subclass thereof.
    
    Parameters:
    
    c - (undocumented)
    
    Returns:
    
    (undocumented)
  - getFirst
```
public <T extends Attributes.Attribute> T getFirst(T default_,
                                                   scala.reflect.ClassTag<T> evidence$5)
```
    Deprecated.
    Attributes should always be most specific, use get[T]. Since 2.5.7.
    
    Scala API: Get the least specific attribute (added first) of a given type parameter T Class or subclass thereof. If no such attribute exists the default value is returned.
    
    Parameters:
    
    default_ - (undocumented)
    
    evidence$5 - (undocumented)
    
    Returns:
    
    (undocumented)
  - getFirst
```
public <T extends Attributes.Attribute> scala.Option<T> getFirst(scala.reflect.ClassTag<T> evidence$6)
```
    Deprecated.
    Attributes should always be most specific, use get[T]. Since 2.5.7.
    
    Scala API: Get the least specific attribute (added first) of a given type parameter T Class or subclass thereof.
    
    Parameters:
    
    evidence$6 - (undocumented)
    
    Returns:
    
    (undocumented)
  - copy
```
public Attributes copy(scala.collection.immutable.List<Attributes.Attribute> attributeList)
```
  - copy$default$1
```
public scala.collection.immutable.List<Attributes.Attribute> copy$default$1()
```
  - productPrefix
```
public java.lang.String productPrefix()
```
    Specified by:
    
    productPrefix in interface scala.Product
  - productArity
```
public int productArity()
```
    Specified by:
    
    productArity in interface scala.Product
  - productElement
```
public java.lang.Object productElement(int x$1)
```
    Specified by:
    
    productElement in interface scala.Product
  - productIterator
```
public scala.collection.Iterator<java.lang.Object> productIterator()
```
    Specified by:
    
    productIterator in interface scala.Product
  - canEqual
```
public boolean canEqual(java.lang.Object x$1)
```
    Specified by:
    
    canEqual in interface scala.Equals
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class java.lang.Object
  - toString
```
public java.lang.String toString()
```
    Overrides:
    
    toString in class java.lang.Object
  - equals
```
public boolean equals(java.lang.Object x$1)
```
    Specified by:
    
    equals in interface scala.Equals
    
    Overrides:
    
    equals in class java.lang.Object

Class Attributes

Nested Class Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Attributes

Method Detail

$lessinit$greater$default$1

cancellationStrategyCompleteState

cancellationStrategyFailStage

cancellationStrategyAfterDelay

logLevelOff

logLevelError

logLevelWarning

logLevelInfo

logLevelDebug

apply

apply$default$1

none

asyncBoundary

name

inputBuffer

createLogLevels

createLogLevels

logLevels

logLevels$default$1

logLevels$default$2

logLevels$default$3

extractName

apply

unapply

attributeList

isAsync

getAttribute

getAttribute

get

get

mandatoryAttribute

getMandatoryAttribute

and

and

nameLifted

nameOrDefault

nameOrDefault$default$1

contains

getAttributeList

getAttributeList

filtered

getFirstAttribute

getFirstAttribute

getFirst

getFirst

copy

copy$default$1

productPrefix

productArity

productElement

productIterator

canEqual

hashCode

toString

equals