trait ServiceLocator extends AnyRef
Locates services.
The service locator is responsible for two things, one is locating services according to the passed in name and service call information, the other is to implement circuit breaking functionality when #doWithService is invoked.
The reason circuit breaking is a service locator concern is that generally, the service locator will want to be aware of when a circuit breaker is open, and respond accordingly. For example, it may decide to pull that node from its routing pool, or it may decide to notify some up stream service registry that that node is no longer responding.
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- ServiceLocator.scala
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Abstract Value Members
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abstract
def
doWithService[T](name: String, serviceCall: Call[_, _])(block: (URI) ⇒ Future[T])(implicit ec: ExecutionContext): Future[Option[T]]
Do the given action with the given service.
Do the given action with the given service.
This should be used in preference to Descriptor.Call) when possible as it will allow the service locator to add in things like circuit breakers.
It is required that the service locator will, based on the service call circuit breaker configuration, wrap the invocation of the passed in block with a circuit breaker.
- name
The name of the service.
- serviceCall
The service call descriptor that this lookup is for.
- block
A block of code that takes the URI for the service, and returns a future of some work done on the service. This will only be executed if the service was found.
- returns
The result of the executed block, if the service was found.
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abstract
def
locate(name: String, serviceCall: Call[_, _]): Future[Option[URI]]
Locate a service's URI for the given name.
Locate a service's URI for the given name.
- name
The name of the service.
- serviceCall
The service call descriptor that this lookup is for.
- returns
The URI for that service, if it exists.
Concrete Value Members
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final
def
!=(arg0: Any): Boolean
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- AnyRef → Any
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final
def
##(): Int
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- AnyRef → Any
-
def
+(other: String): String
- Implicit
- This member is added by an implicit conversion from ServiceLocator to any2stringadd[ServiceLocator] performed by method any2stringadd in scala.Predef.
- Definition Classes
- any2stringadd
-
def
->[B](y: B): (ServiceLocator, B)
- Implicit
- This member is added by an implicit conversion from ServiceLocator to ArrowAssoc[ServiceLocator] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc
- Annotations
- @inline()
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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- protected[lang]
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- @throws( ... ) @native()
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def
ensuring(cond: (ServiceLocator) ⇒ Boolean, msg: ⇒ Any): ServiceLocator
- Implicit
- This member is added by an implicit conversion from ServiceLocator to Ensuring[ServiceLocator] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: (ServiceLocator) ⇒ Boolean): ServiceLocator
- Implicit
- This member is added by an implicit conversion from ServiceLocator to Ensuring[ServiceLocator] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean, msg: ⇒ Any): ServiceLocator
- Implicit
- This member is added by an implicit conversion from ServiceLocator to Ensuring[ServiceLocator] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
-
def
ensuring(cond: Boolean): ServiceLocator
- Implicit
- This member is added by an implicit conversion from ServiceLocator to Ensuring[ServiceLocator] performed by method Ensuring in scala.Predef.
- Definition Classes
- Ensuring
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final
def
eq(arg0: AnyRef): Boolean
- Definition Classes
- AnyRef
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def
equals(arg0: Any): Boolean
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- AnyRef → Any
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def
finalize(): Unit
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- protected[lang]
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- @throws( classOf[java.lang.Throwable] )
-
def
formatted(fmtstr: String): String
- Implicit
- This member is added by an implicit conversion from ServiceLocator to StringFormat[ServiceLocator] performed by method StringFormat in scala.Predef.
- Definition Classes
- StringFormat
- Annotations
- @inline()
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final
def
getClass(): Class[_]
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- @native()
-
def
hashCode(): Int
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- AnyRef → Any
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- @native()
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final
def
isInstanceOf[T0]: Boolean
- Definition Classes
- Any
-
def
locate(name: String): Future[Option[URI]]
Locate a service's URI for the given name.
Locate a service's URI for the given name.
- name
The name of the service.
- returns
The URI for that service, if it exists.
-
def
locateAll(name: String, serviceCall: Call[_, _]): Future[List[URI]]
Locate the service's URIs for the given name.
Locate the service's URIs for the given name.
- name
The name of the service.
- serviceCall
The service call descriptor that this lookup is for.
- returns
One or more URIs for that service, otherwise an empty List (Nil) if none is found.
- Since
1.4
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def
locateAll(name: String): Future[List[URI]]
Locate the service's URIs for the given name.
Locate the service's URIs for the given name.
- name
The name of the service.
- returns
One or more URIs for that service, otherwise an empty List (Nil) if none is found.
- Since
1.4
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final
def
ne(arg0: AnyRef): Boolean
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- AnyRef
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final
def
notify(): Unit
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- @native()
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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def
→[B](y: B): (ServiceLocator, B)
- Implicit
- This member is added by an implicit conversion from ServiceLocator to ArrowAssoc[ServiceLocator] performed by method ArrowAssoc in scala.Predef.
- Definition Classes
- ArrowAssoc