io.vertx.reactivex.ext.healthchecks

## Class HealthCheckHandler

- java.lang.Object
- - io.vertx.reactivex.ext.healthchecks.HealthCheckHandler

- All Implemented Interfaces:
    Handler<RoutingContext>

      public class HealthCheckHandler
      extends Object
      implements Handler<RoutingContext>

  A Vert.x Web handler on which you register health check procedure. It computes the outcome status (`UP` or `DOWN`) . When the handler process a HTTP request, it computes the global outcome and build a HTTP response as follows:

  - 204 - status is `UP` but no procedures installed (no payload)
  - 200 - status is `UP`, the payload contains the result of the installed procedures
  - 503 - status is `DOWN`, the payload contains the result of the installed procedures
  - 500 - status is `DOWN`, the payload contains the result of the installed procedures, one of the procedure has failed

  NOTE: This class has been automatically generated from the `original` non RX-ified interface using Vert.x codegen.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static io.vertx.lang.rx.TypeArg<HealthCheckHandler>` | `__TYPE_ARG`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `HealthCheckHandler(HealthCheckHandler delegate)`
    `HealthCheckHandler(Object delegate)`

  - ### Method Summary

    All Methods Static Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `static HealthCheckHandler` | `create(Vertx vertx)` Creates an instance of the default implementation of the `HealthCheckHandler`.
    `static HealthCheckHandler` | `create(Vertx vertx, AuthenticationProvider provider)` Creates an instance of the default implementation of the `HealthCheckHandler`.
    `static HealthCheckHandler` | `createWithHealthChecks(HealthChecks hc)` Creates an instance of the default implementation of the `HealthCheckHandler`.
    `static HealthCheckHandler` | `createWithHealthChecks(HealthChecks hc, AuthenticationProvider provider)` Creates an instance of the default implementation of the `HealthCheckHandler`.
    `boolean` | `equals(Object o)`
    `HealthCheckHandler` | `getDelegate()`
    `void` | `handle(RoutingContext event)` Something has happened, so handle it.
    `int` | `hashCode()`
    `static HealthCheckHandler` | `newInstance(HealthCheckHandler arg)`
    `HealthCheckHandler` | `register(String name, Handler<Promise<Status>> procedure)` Registers a health check procedure.
    `HealthCheckHandler` | `register(String name, long timeout, Handler<Promise<Status>> procedure)` Registers a health check procedure.
    `HealthCheckHandler` | `resultMapper(java.util.function.Function<CheckResult,Future<CheckResult>> resultMapper)` Sets a function which will be invoked before the `CheckResult` gets written to clients.
    `HealthCheckHandler` | `resultMapper(Function<CheckResult,Single<CheckResult>> resultMapper)` Sets a function which will be invoked before the `CheckResult` gets written to clients.
    `String` | `toString()`
    `HealthCheckHandler` | `unregister(String name)` Unregisters a procedure.

    - ### Methods inherited from class java.lang.Object

      `clone, finalize, getClass, notify, notifyAll, wait, wait, wait`

- - ### Field Detail

    - #### __TYPE_ARG

          public static final io.vertx.lang.rx.TypeArg<HealthCheckHandler> __TYPE_ARG

  - ### Constructor Detail

    - #### HealthCheckHandler

          public HealthCheckHandler(HealthCheckHandler delegate)

    - #### HealthCheckHandler

          public HealthCheckHandler(Object delegate)

  - ### Method Detail

    - #### toString

          public String toString()

      Overrides:
        `toString` in class `Object`

    - #### equals

          public boolean equals(Object o)

      Overrides:
        `equals` in class `Object`

    - #### hashCode

          public int hashCode()

      Overrides:
        `hashCode` in class `Object`

    - #### getDelegate

          public HealthCheckHandler getDelegate()

    - #### handle

          public void handle(RoutingContext event)

      Something has happened, so handle it.
      Specified by:
        `handle` in interface `Handler<RoutingContext>`
      Parameters:
        `event` - the event to handle

    - #### create

          public static HealthCheckHandler create(Vertx vertx,
                                                  AuthenticationProvider provider)

      Creates an instance of the default implementation of the `HealthCheckHandler`. This function creates a new instance of `HealthChecks`.
      Parameters:
        `vertx` - the Vert.x instance, must not be `null`
        `provider` - the Authentication provider used to authenticate the HTTP request
      Returns:
        the created instance

    - #### create

          public static HealthCheckHandler create(Vertx vertx)

      Creates an instance of the default implementation of the `HealthCheckHandler`. This function creates a new instance of `HealthChecks`.
      Parameters:
        `vertx` - the Vert.x instance, must not be `null`
      Returns:
        the created instance

    - #### createWithHealthChecks

          public static HealthCheckHandler createWithHealthChecks(HealthChecks hc,
                                                                  AuthenticationProvider provider)

      Creates an instance of the default implementation of the `HealthCheckHandler`.
      Parameters:
        `hc` - the health checks object to use, must not be `null`
        `provider` -
      Returns:
        the created instance

    - #### createWithHealthChecks

          public static HealthCheckHandler createWithHealthChecks(HealthChecks hc)

      Creates an instance of the default implementation of the `HealthCheckHandler`.
      Parameters:
        `hc` - the health checks object to use
      Returns:
        the created instance

    - #### register

          public HealthCheckHandler register(String name,
                                             Handler<Promise<Status>> procedure)

      Registers a health check procedure.

      The procedure is a taking a of `Status` as parameter. Procedures are asynchronous, and must complete or fail the given . If the future object is failed, the procedure outcome is considered as `DOWN`. If the future is completed without any object, the procedure outcome is considered as `UP`. If the future is completed with a (not-null) `Status`, the procedure outcome is the received status.

      This method uses a 1s timeout. To configure the timeout use `register(java.lang.String, io.vertx.core.Handler<io.vertx.reactivex.core.Promise<io.vertx.ext.healthchecks.Status>>)`.

      Parameters:
        `name` - the name of the procedure, must not be `null` or empty
        `procedure` - the procedure, must not be `null`
      Returns:
        the current `HealthCheckHandler`

    - #### register

          public HealthCheckHandler register(String name,
                                             long timeout,
                                             Handler<Promise<Status>> procedure)

      Registers a health check procedure.

      The procedure is a taking a of `Status` as parameter. Procedures are asynchronous, and must complete or fail the given . If the future object is failed, the procedure outcome is considered as `DOWN`. If the future is completed without any object, the procedure outcome is considered as `UP`. If the future is completed with a (not-null) `Status`, the procedure outcome is the received status.

      Parameters:
        `name` - the name of the procedure, must not be `null` or empty
        `timeout` - the procedure timeout
        `procedure` - the procedure, must not be `null`
      Returns:
        the current `HealthCheckHandler`

    - #### unregister

          public HealthCheckHandler unregister(String name)

      Unregisters a procedure.
      Parameters:
        `name` - the name of the procedure
      Returns:
        the current `HealthCheckHandler`

    - #### resultMapper

          public HealthCheckHandler resultMapper(java.util.function.Function<CheckResult,Future<CheckResult>> resultMapper)

      Sets a function which will be invoked before the `CheckResult` gets written to clients.
      Parameters:
        `resultMapper` - the used to manipulate the `CheckResult`, `null` means no result mapper function enabled.
      Returns:
        the current `HealthCheckHandler`

    - #### resultMapper

          public HealthCheckHandler resultMapper(Function<CheckResult,Single<CheckResult>> resultMapper)

      Sets a function which will be invoked before the `CheckResult` gets written to clients.
      Parameters:
        `resultMapper` - the used to manipulate the `CheckResult`, `null` means no result mapper function enabled.
      Returns:
        the current `HealthCheckHandler`

    - #### newInstance

          public static HealthCheckHandler newInstance(HealthCheckHandler arg)

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