[CONF] Apache ServiceMix: servicemix-file (page edited)

confluence Sun, 22 Jun 2008 23:44:33 -0700

Page Edited : SM : servicemix-file

servicemix-file has been edited by Gert Vanthienen (Jun 22, 2008).

Content:

ServiceMix File

The ServiceMix File component provides JBI integration to the file system. It can be used to read & write files via URI or to periodically poll directories for new files.

Note that this component is only available in releases >= 3.1.

URI

You can use the familiar file URI to communicate with files

file:foo.xml
file://path/to/something

Endpoints

Provider endpoint

<file:sender service="test:service"
             endpoint="endpoint"
             directory="file:target/pollerFiles" />

Polling (consumer) endpoint

<file:poller service="test:poller"
             endpoint="poller"
             targetService="test:receiver"
             file="file:target/pollerFiles" />

Poller generates an InOnly message

Poller endpoint attributes

Name	Type	Description	Default
service	QName	the service name of the endpoint	required to be spec'd
endpoint	string	the endpoint name of the endpoint	required to be spec'd
interfaceName	QName	the interface name of the endpoint
targetService	QName	the service name of the target endpoint
targetEndPoint	string	the endpoint name of the target endpoint
targetInterface	QName	the interface name of the target endpoint
targetUri	string	the uri of the target endpoint
autoCreateDirectory	boolean	creates dir if doesn't exist	true
firstTime	date	datetime before first poll can take place	null (first poll right after start)
delay	long	amount of time first polling is delayed after start	0
period	long	amount of time between polls	5000
file	string	sets the file or directory to poll	null (must be spec'd)
deleteFile	boolean	delete file when it is processed	true
recursive	boolean	process sub directories	true
marshaler	class	org.apache.servicemix.components.util.FileMarshaler	DefaultFileMarshaler
lockManager	class	org.apache.servicemix.locks.LockManager	SimpleLockManager
filter	class	java.io.FileFilter (optional filter)	null - no filter
scheduler	class	org.apache.servicemix.components.varscheduler.Scheduler	new Scheduler(true)
archive	string	sets the directory to archive files before deleting them (available since 3.2)	null (no archiving)

Sender endpoint attributes

Name	Type	Description	Default
service	QName	the service name of the endpoint	required to be spec'd
endpoint	string	the endpoint name of the endpoint	required to be spec'd
directory	file		required to be spec'd
autoCreateDirectory	boolean		true
append	boolean	append to an existing file instead of overwriting it (3.3 or above)	false
marshaler	class	org.apache.servicemix.components.util.FileMarshaler	DefaultFileMarshaler
tempFilePrefix	string		"servicemix-"
tempFileSuffix	string		".xml"

For all xbean file endpoint configuration take a look at Xml schemas

Filtering

Filtering of files to use during the polling process can be accomplished by configuring the filter property.

Filter example

<file:poller service="test:poller" endpoint="poller"
	file="file:inbox" targetService="test:service"
	targetEndpoint="endpoint" period="10000" recursive="true">
	<property name="filter">
		<bean class="org.apache.oro.io.GlobFilenameFilter">
			<constructor-arg value="*.xml" />
		</bean>
	</property>
</file:poller>

In the example above, the Apache ORO jar must be in the classpath. See: http://jakarta.apache.org/oro/

ServiceMix 3.2 Filter example

<file:poller service="test:poller" endpoint="poller"
	file="file:inbox" targetService="test:service"
	targetEndpoint="endpoint" period="10000" recursive="true">
        <property name="filter">
            <bean class="org.apache.commons.io.filefilter.WildcardFilter">
                <constructor-arg value="*.csv" />
            </bean>
        </property>
</file:poller>

In the example above it uses Apache Commons IO WildcardFilter as it implements FileFilter. The Apache Commons IO jar file must be in the classpath. See: http://commons.apache.org/io/

Marshalers

By default, poller endpoints expect the content of the file to be in xml format.

Marshaler example

<file:sender service="test:service" endpoint="endpoint" directory="file:target/componentOutput">
  <file:marshaler>
    <sm:defaultFileMarshaler>
      <sm:fileName>
        <!-- lets use a header from the message -->
        <sm:xpathString xpath="concat($name, '.xml')"/>
      </sm:fileName>
    </sm:defaultFileMarshaler>
  </file:marshaler>
</file:sender>

Below is an example of a non-XML file marshaler that moves a file from an inbox to an outbox directory. The binary marshaler sends a message with the file attached. This allows any file to be processed.

The contents below were used in an xbean.xml file for a service unit named filemover

Binary File Marshaler example

<?xml version="1.0"?>
<beans xmlns:f="http://servicemix.apache.org/file/1.0"
       xmlns:proj="http://servicemix.apache.org/samples/filemover"
       xmlns:sm="http://servicemix.apache.org/config/1.0">

  <f:sender service="proj:fileSender"
                 endpoint="endpoint"
                 directory="file:///C:/opensrc/test/myOutbox"
                 autoCreateDirectory="true">

    <property name="marshaler">
      <bean class="org.apache.servicemix.components.util.BinaryFileMarshaler" />
    </property>
  </f:sender>


  <f:poller
      service="proj:filePoller"
      endpoint="poller"
      file="file:///C:/opensrc/test/myInbox"
      targetService="proj:fileSender"
      targetEndpoint="endpoint"
      period="60000"
      recursive="true"
      autoCreateDirectory="true">

      <property name="marshaler">
        <bean class="org.apache.servicemix.components.util.BinaryFileMarshaler" />
      </property>
    </f:poller>
</beans>

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[CONF] Apache ServiceMix: servicemix-file (page edited)

ServiceMix File

URI

Endpoints

Filtering

Marshalers

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