:experimental:

[[Karaf-KarafSupport]]
=== Karaf Support

Apache Camel is designed to work nicely into
http://karaf.apache.org[Apache Karaf] OSGi container.

It includes:

* Camel features descriptor allowing to easily and quickly install Camel
in Karaf.
* Karaf commands allowing you to view, start, stop, get info, about the
Camel contexts and routes running in the Karaf instance. +

NOTE: Karaf commands are available starting with Camel 2.8.0, and the
commands was renamed in Camel 2.9.0.

Here are the versions that are compatible:

[width="100%",cols="1m,1m",options="header",]
|============================
|Camel Version |Karaf Version
|2.2.0 |1.2.0
|2.3.0 |1.3.0
|2.4.0 |1.4.0
|2.5.0 |2.1.0
|2.7.0 |2.2.0
|2.7.2 |2.2.2
|2.8.2 |2.2.4
|2.9.0 |2.2.5
|2.10.0 |2.2.8
|2.11.0 |2.3.1
|2.12.0 |2.3.2
|2.13.0 |2.3.3
|2.14.0 |2.3.7
|2.15.0 |2.4.0
|2.23.0 |4.2
|3.0    |4.3
|============================

[[Karaf-PreparingKarafforCamel]]
=== Preparing Karaf for Camel

Camel uses several bundles to provide low level package, such as
`javax.annotation` or `javax.xml.bind`.

Due to that, we mustn't use the default system package coming from the
JDK. It means that we need to _exclude_ some packages from system
packages in order to use packages provided by tiers bundles.

Camel provides a ready to use `config.properties` file that you can
download:

http://svn.apache.org/repos/asf/camel/tags/camel-2.7.2/platforms/karaf/features/src/main/resources/config.properties

This file has to be copied into Karaf etc folder.

TIP: *Karaf 2.2.5 or newer* +
Notice that Karaf 2.2.5 now provides an extra configuration file that
has been configured to work with Camel and CXF, so its recommended to
use this file if you use Karaf 2.2.5 or newer. You can prepare Karaf by
copying the `etc/jre.properties.cxf` and override the existing
`etc/jre.properties` file.


[[Karaf-InstallCamelinKaraf]]
=== Install Camel in Karaf

Assuming that you have a running Karaf instance, you can register the
Camel features descriptor:

[source,sh]
----
karaf@root> features:addurl mvn:org.apache.camel.karaf/apache-camel/2.8.2/xml/features
----

From Karaf 2.2.6 onwards this has been simplified as there is a new
`features:chooseurl` command that is pre-setup for Camel:

[source,sh]
----
karaf@root> features:chooseurl camel 2.9.1
----

Now, we have all Camel features available:

[source,sh]
----
karaf@root> features:list|grep -i camel
[uninstalled] [2.8.0          ] camel                         repo-0
[uninstalled] [2.8.0          ] camel-core                    repo-0
[uninstalled] [2.8.0          ] camel-spring                  repo-0
[uninstalled] [2.8.0          ] camel-blueprint               repo-0
[uninstalled] [2.8.0          ] camel-test                    repo-0
[uninstalled] [2.8.0          ] camel-cxf                     repo-0
[uninstalled] [2.8.0          ] camel-cache                   repo-0
[uninstalled] [2.8.0          ] camel-castor                  repo-0
[uninstalled] [2.8.0          ] camel-crypto                  repo-0
[uninstalled] [2.8.0          ] camel-http                    repo-0
[uninstalled] [2.8.0          ] camel-http4                   repo-0
[uninstalled] [2.8.0          ] camel-mina                    repo-0
[uninstalled] [2.8.0          ] camel-jetty                   repo-0
[uninstalled] [2.8.0          ] camel-servlet                 repo-0
[uninstalled] [2.8.0          ] camel-jms                     repo-0
...
----

To install Camel, just install the `camel` feature:

[source,sh]
----
karaf@root> features:install camel
----

You have to install the Camel features depending of your requirements.

For instance, if you want to use blueprint as Camel DSL, you have to
install the `camel-blueprint` feature:

[source,sh]
----
karaf@root> features:install camel-blueprint
----

If, in your route, you use an endpoint like `stream:out`, you have to
install the `camel-stream` feature:

[source,sh]
----
karaf@root> features:install camel-stream
----

[[Karaf-Karafcommands]]
=== Karaf commands

When you install the camel feature, new Karaf commands become available
automatically.

[[Karaf-KarafcommandsinCamel2.8.x]]
==== Karaf commands in Camel 2.8.x

[width="100%",cols="1s,4",options="header",]
|=======================================================================
|Command |Description
|camel:list-contexts |Lists the camel contexts available in the
current Karaf instance

|camel:list-routes |Displays the list of Camel routes available in the
current Karaf instance

|camel:info-context |Displays detail information about a given Camel
context

|camel:start-context |Starts the given Camel context

|camel:stop-context |Stops the given Camel context

|camel:info-route |Provides detail information about a Camel route

|camel:show-route |Renders the route in XML

|camel:start-route |Starts the given route

|camel:stop-route |Stops the given route
|=======================================================================

[[Karaf-KarafcommandsinCamel2.9onwards]]
==== Karaf commands in Camel 2.9 onwards

[width="100%",cols="1s,4",options="header",]
|=======================================================================
|Command |Description
|camel:context-list |Lists the camel contexts available in the current
Karaf instance

|camel:context-info |Displays detail information about a given Camel
context

|camel:context-start |Starts the given Camel context

|camel:context-stop |Stops the given Camel context (it becomes
unavailable and it can't be started afterwards)

|camel:route-list |Displays the list of Camel routes available in the
current Karaf instance

|camel:route-info |Provides detail information about a Camel route

|camel:route-show |Renders the route in XML

|camel:route-start |Starts the given route. From Camel *2.10* onwards
you can use `*` as wildcard to match multiple routes.

|camel:route-stop |Stops the given route. From Camel *2.10* onwards
you can use `*` as wildcard to match multiple routes.

|camel:route-suspend |Suspends the given route. From Camel *2.10*
onwards you can use `*` as wildcard to match multiple routes.

|camel:route-resume |Resumes the given route. From Camel *2.10*
onwards you can use `*` as wildcard to match multiple routes.
|=======================================================================

[[Karaf-KarafcommandsinCamel2.10onwards]]
==== Karaf commands in Camel 2.10 onwards

[width="100%",cols="1s,4",options="header",]
|=======================================================================
|Command |Description
|camel:endpoint-list |Lists endpoints from all camel contexts
available in the current Karaf instance
|=======================================================================

[[Karaf-KarafcommandsinCamel2.11onwards]]
==== Karaf commands in Camel 2.11 onwards

[width="100%",cols="1s,4",options="header",]
|=======================================================================
|Command |Description
|camel:route-profile |To profile route(s)

|camel:route-reset-stats |To reset performance stats on the given
route(s)
|=======================================================================

[[Karaf-KarafcommandsinCamel2.12.4onwards]]
==== Karaf commands in Camel 2.12.4 onwards

[width="100%",cols="1s,4",options="header",]
|=========================================================
|Command |Description
|camel:context-suspend |Suspends the given Camel context
|camel:context-resume |Resumes the given Camel context
|=========================================================

[[Karaf-KarafcommandsinCamel3onwards]]
==== Karaf commands in Camel 3 onwards

[width="100%",cols="1s,4",options="header",]
|=======================================================================
|Command |Description
|camel:route-step |Display step information about Camel route(s).
|=======================================================================

[[Karaf-camel:context-list]]
==== `camel:context-list`

The `camel:context-list` command displays the list of Camel contexts
available in the current Karaf instance:

[source,sh]
----
karaf@root> camel:context-list
Name                 Status               Uptime
[66-camel-3        ] [Started           ] [14.559 seconds    ]
----

It displays the context name/ID (used in others commands), the current
status (started/stopped), the uptime (since when the context has been
started).

[[Karaf-camel:route-list]]
==== `camel:route-list`

The `camel:route-list` command displays the list of Camel routes
available in the current Karaf instance:

[source,sh]
----
karaf@root> camel:route-list
[route1              ]
----

You can also filter the routes by Camel context:

[source,sh]
----
karaf@root> camel:route-list 66-camel-3
[route1              ]
----

TIP: use the kbd:[TAB] key to completion on the Camel context ID.

[[Karaf-camel:info-context]]
==== `camel:info-context`

The `camel:context-info` command displays detail information about a
given Camel context:

add the `--verbose` option (following the context name) to also list
the endpoints:

[source]
----
karaf@root> camel:context-info 66-camel-3
Camel Context 66-camel-3
        Name: 66-camel-3
        Version: 2.8.0
        Status: Started
        Uptime: 1 minute

Advanced
        Auto Startup: true
        Starting Routes: false
        Suspended: false
        Tracing: false

Properties

Components
        timer
        properties
        log

Endpoints
        timer://test
        log://test

Routes
        route1

Used Languages
----

You can see the current Camel version used by the Camel context, some
context attributes, the components involved in the context, and the
endpoints defined.

TIP: use kbd:[TAB] key for completion on the Camel context name.

[[Karaf-camel:context-start]]
==== `camel:context-start`

The `camel:context-start` command starts a given Camel context:

[source,sh]
----
karaf@root> camel:context-start 66-camel-3
----

TIP: use kbd:[TAB] key for completion on the Camel context name.

[[Karaf-camel:context-stop]]
==== `camel:context-stop`

The `camel:context-stop` command stops a given Camel context. After
stopping the context it becomes unavailable and cannot be started again.

[source,sh]
----
karaf@root> karaf@root> camel:context-stop 66-camel-3
----

TIP: use kbd:[TAB] key for completion on the Camel context name.

[[Karaf-camel:route-info]]
==== `camel:route-info`

The `camel:route-info` command provides detail information about a
Camel route:

[source]
----
karaf@root> camel:route-info route1
Camel Route route1
        Camel Context: 66-camel-3

Properties
                id = route1
                parent = 2e7aacc1

Statistics
        Exchanges Total: 98
        Exchanges Completed: 98
        Exchanges Failed: 0
        Min Processing Time: 1ms
        Max Processing Time: 2ms
        Mean Processing Time: 1ms
        Total Processing Time: 134ms
        Last Processing Time: 1ms
        First Exchange Date: 2011-06-29 07:21:57
        Last Exchange Completed Date: 2011-06-29 07:23:34

Definition
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<route id="route1" xmlns="http://camel.apache.org/schema/spring">
    <from uri="timer:test"/>
    <to uri="log:test" id="to1"/>
</route>
----

You can see some statistics (the number of processed exchanges, the
processing time, etc) and a XML rendering of your route (whatever DSL
used to define the route).

TIP: use kbd:[TAB] key for completion on the route name.

[[Karaf-camel:route-show]]
==== `camel:route-show`

The `camel:route-show` command renders the route in XML. It's
independent from the DSL used to define the route:

[source]
----
karaf@root> camel:route-show route1
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<route id="route1" xmlns="http://camel.apache.org/schema/spring">
    <from uri="timer:test"/>
    <to uri="log:test" id="to1"/>
</route>
----

TIP: use kbd:[TAB] key for completion on the route name.

[[Karaf-camel:route-start]]
==== `camel:route-start`

The `camel:route-start` command starts a Camel route:

[source,sh]
----
karaf@root> camel:route-start route1
----

TIP: use kbd:[TAB] key for completion on the route name.

[[Karaf-camel:route-stop]]
==== `camel:route-stop`

The `camel:route-stop` command stops a Camel route:

[source,sh]
----
karaf@root> camel:route-stop route1
----

[[Karaf-Camel2.9ornewer]]
===== Camel 2.9 or newer

[[Karaf-camel:route-suspend]]
==== `camel:route-suspend`

The `camel:route-suspend` command suspends a Camel route:

[source,sh]
----
karaf@root> camel:route-suspend route1
----

TIP: use kbd:[TAB] key for completion on the route name.

[[Karaf-camel:route-resume]]
==== `camel:route-resume`

The `camel:route-resume` command resume a Camel route:

[source,sh]
----
karaf@root> camel:route-resume route1
----

TIP: use kbd:[TAB] key for completion on the route name.

[[Karaf-Camel2.10ornewer]]
===== Camel 2.10 or newer

[[Karaf-camel:endpoint-list]]
==== `camel:endpoint-list`

The `camel:endpoint-list` command displays the list of the endpoints
available in all camel contexts of the current Karaf instance:

[source]
----
karaf@root> camel:endpoint-list
camel-id             uri                  Status
[test              ] [timer://test      ] [Started           ]
[test              ] [direct://A        ] [Started           ]
----

It displays the context name/ID (used in others commands), the URI of
the endpoint and the current status (started/stopped).

[[Karaf-Camel2.12.4ornewer]]
===== Camel 2.12.4 or newer

[[Karaf-camel:context-suspend]]
==== `camel:context-suspend`

The `camel:context-suspend` command suspends a given Camel context.
It then may be resumed again.

[source,sh]
----
karaf@root> karaf@root> camel:context-suspend 66-camel-3
----

TIP: use kbd:[TAB] key for completion on the Camel context name.

[[Karaf-camel:context-resume]]
==== `camel:context-resume`

The `camel:context-resume` command resumes a given Camel context.
After that it returns to the _started_ state.

[source,sh]
----
karaf@root> karaf@root> camel:context-resume 66-camel-3
----

TIP: use kbd:[TAB] key for completion on the Camel context name.
