[[nagios-component]]
= Nagios Component
//THIS FILE IS COPIED: EDIT THE SOURCE FILE:
:page-source: components/camel-nagios/src/main/docs/nagios-component.adoc
:docTitle: Nagios
:artifactId: camel-nagios
:description: Send passive checks to Nagios using JSendNSCA.
:since: 2.3
:supportLevel: Stable
:component-header: Only producer is supported

*Since Camel {since}*

*{component-header}*

The xref:nagios-component.adoc[Nagios] component allows you to send passive checks
to http://nagios.org[Nagios].

Maven users will need to add the following dependency to their `pom.xml`
for this component:

[source,java]
------------------------------------------------------------
<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-nagios</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>
------------------------------------------------------------

== URI format

[source,java]
------------------------------
nagios://host[:port][?Options]
------------------------------

Camel provides two abilities with the xref:nagios-component.adoc[Nagios]
component. You can send passive check messages by sending a message to
its endpoint. +
 Camel also provides a EventNotifer which allows
you to send notifications to Nagios.

== Options


// component options: START
The Nagios component supports 7 options, which are listed below.


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *connectionTimeout* (producer) | Connection timeout in millis. | 5000 | int
| *lazyStartProducer* (producer) | Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel's routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. | false | boolean
| *timeout* (producer) | Sending timeout in millis. | 5000 | int
| *basicPropertyBinding* (advanced) | Whether the component should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities | false | boolean
| *configuration* (advanced) | To use a shared NagiosConfiguration |  | NagiosConfiguration
| *encryption* (security) | To specify an encryption method. The value can be one of: NONE, TRIPLE_DES, XOR, RIJNDAEL128, RIJNDAEL192, RIJNDAEL256, BLOWFISH |  | Encryption
| *password* (security) | Password to be authenticated when sending checks to Nagios. |  | String
|===
// component options: END


// endpoint options: START
The Nagios endpoint is configured using URI syntax:

----
nagios:host:port
----

with the following path and query parameters:

=== Path Parameters (2 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *host* | *Required* This is the address of the Nagios host where checks should be send. |  | String
| *port* | *Required* The port number of the host. |  | int
|===


=== Query Parameters (8 parameters):


[width="100%",cols="2,5,^1,2",options="header"]
|===
| Name | Description | Default | Type
| *connectionTimeout* (producer) | Connection timeout in millis. | 5000 | int
| *lazyStartProducer* (producer) | Whether the producer should be started lazy (on the first message). By starting lazy you can use this to allow CamelContext and routes to startup in situations where a producer may otherwise fail during starting and cause the route to fail being started. By deferring this startup to be lazy then the startup failure can be handled during routing messages via Camel's routing error handlers. Beware that when the first message is processed then creating and starting the producer may take a little time and prolong the total processing time of the processing. | false | boolean
| *sendSync* (producer) | Whether or not to use synchronous when sending a passive check. Setting it to false will allow Camel to continue routing the message and the passive check message will be send asynchronously. | true | boolean
| *timeout* (producer) | Sending timeout in millis. | 5000 | int
| *basicPropertyBinding* (advanced) | Whether the endpoint should use basic property binding (Camel 2.x) or the newer property binding with additional capabilities | false | boolean
| *synchronous* (advanced) | Sets whether synchronous processing should be strictly used, or Camel is allowed to use asynchronous processing (if supported). | false | boolean
| *encryption* (security) | To specify an encryption method. The value can be one of: NONE, TRIPLE_DES, XOR, RIJNDAEL128, RIJNDAEL192, RIJNDAEL256, BLOWFISH |  | Encryption
| *password* (security) | Password to be authenticated when sending checks to Nagios. |  | String
|===
// endpoint options: END


== Sending message examples

You can send a message to Nagios where the message payload contains the
message. By default it will be `OK` level and use the
CamelContext name as the service name. You can
overrule these values using headers as shown above.

For example we send the `Hello Nagios` message to Nagios as follows:

[source,java]
---------------------------------------------------------------------------------------
    template.sendBody("direct:start", "Hello Nagios");

    from("direct:start").to("nagios:127.0.0.1:5667?password=secret").to("mock:result");
---------------------------------------------------------------------------------------

To send a `CRITICAL` message you can send the headers such as:

[source,java]
-----------------------------------------------------------------------------
        Map headers = new HashMap();
        headers.put(NagiosConstants.LEVEL, "CRITICAL");
        headers.put(NagiosConstants.HOST_NAME, "myHost");
        headers.put(NagiosConstants.SERVICE_NAME, "myService");
        template.sendBodyAndHeaders("direct:start", "Hello Nagios", headers);
-----------------------------------------------------------------------------

== Using `NagiosEventNotifer`

The xref:nagios-component.adoc[Nagios] component also provides an
EventNotifer which you can use to send events to
Nagios. For example we can enable this from Java as follows:

[source,java]
-------------------------------------------------------------------
        NagiosEventNotifier notifier = new NagiosEventNotifier();
        notifier.getConfiguration().setHost("localhost");
        notifier.getConfiguration().setPort(5667);
        notifier.getConfiguration().setPassword("password");

        CamelContext context = ... 
        context.getManagementStrategy().addEventNotifier(notifier);
        return context;
-------------------------------------------------------------------

In Spring XML its just a matter of defining a Spring bean with the type
`EventNotifier` and Camel will pick it up as documented here:
xref:manual::advanced-configuration-of-camelcontext-using-spring.adoc[Advanced
configuration of CamelContext using Spring].


include::camel-spring-boot::page$nagios-starter.adoc[]