Author: buildbot
Date: Sun May 3 13:20:28 2015
New Revision: 949945
Log:
Production update by buildbot for camel
Modified:
websites/production/camel/content/book-component-appendix.html
websites/production/camel/content/book-in-one-page.html
websites/production/camel/content/cache/main.pageCache
websites/production/camel/content/file2.html
Modified: websites/production/camel/content/book-component-appendix.html
==============================================================================
--- websites/production/camel/content/book-component-appendix.html (original)
+++ websites/production/camel/content/book-component-appendix.html Sun May 3
13:20:28 2015
@@ -1334,11 +1334,11 @@ template.send("direct:alias-verify&
</div>
</div>
<p>The <strong>cxf:</strong> component provides integration with <a
shape="rect" href="http://cxf.apache.org";>Apache CXF</a> for connecting to
JAX-WS services hosted in CXF.</p><p><style type="text/css">/*<![CDATA[*/
-div.rbtoc1430644676731 {padding: 0px;}
-div.rbtoc1430644676731 ul {list-style: disc;margin-left: 0px;}
-div.rbtoc1430644676731 li {margin-left: 0px;padding-left: 0px;}
+div.rbtoc1430659138917 {padding: 0px;}
+div.rbtoc1430659138917 ul {list-style: disc;margin-left: 0px;}
+div.rbtoc1430659138917 li {margin-left: 0px;padding-left: 0px;}
-/*]]>*/</style></p><div class="toc-macro rbtoc1430644676731">
+/*]]>*/</style></p><div class="toc-macro rbtoc1430659138917">
<ul class="toc-indentation"><li><a shape="rect" href="#CXF-CXFComponent">CXF
Component</a>
<ul class="toc-indentation"><li><a shape="rect" href="#CXF-URIformat">URI
format</a></li><li><a shape="rect" href="#CXF-Options">Options</a>
<ul class="toc-indentation"><li><a shape="rect"
href="#CXF-Thedescriptionsofthedataformats">The descriptions of the
dataformats</a>
@@ -2618,7 +2618,7 @@ To configure Esper via a configuration f
</div>
<h3 id="BookComponentAppendix-URIOptions.1">URI Options</h3><h4
id="BookComponentAppendix-Common">Common</h4><div
class="confluenceTableSmall"><div class="table-wrap"><table
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1"
class="confluenceTh"><p>Name</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Default Value</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>autoCreate</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>Automatically create missing
directories in the file's pathname. For the file consumer, that means creating
the starting directory. For the file producer, it means the directory the files
should be written to.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>bufferSize</code></p></td><td colspan="1"
rowspan="1" class="confluen
ceTd"><p>128kb</p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Write buffer sized in bytes.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>fileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Use <a shape="rect"
href="expression.html">Expression</a> such as <a shape="rect"
href="file-language.html">File Language</a> to dynamically set the filename.
For consumers, it's used as a filename filter. For producers, it's used to
evaluate the filename to write. If an expression is set, it take precedence
over the <code>CamelFileName</code> header. (<strong>Note:</strong> The header
itself can also be an <a shape="rect" href="expression.html">Expression</a>).
The expression options support both <code>String</code> and
<code>Expression</code> types. If the expression is a <code>String</code> type,
it is <strong>always</strong> evaluated using the <a shap
e="rect" href="file-language.html">File Language</a>. If the expression is an
<code>Expression</code> type, the specified <code>Expression</code> type is
used - this allows you, for instance, to use <a shape="rect"
href="ognl.html">OGNL</a> expressions. For the consumer, you can use it to
filter filenames, so you can for instance consume today's file using the <a
shape="rect" href="file-language.html">File Language</a> syntax:
<code>mydata-${date:now:yyyyMMdd}.txt</code>. From <strong>Camel 2.11</strong>
onwards the producers support the <code>CamelOverruleFileName</code> header
which takes precedence over any existing <code>CamelFileName</code> header; the
<code>CamelOverruleFileName</code> is a header that is used only once, and
makes it easier as this avoids to temporary store <code>CamelFileName</code>
and have to restore it afterwards.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>flatten</code></p></td><td colspan="1"
rowspan="1" class="confluenceT
d"><p><code>false</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Flatten is used to flatten the file name path to strip
any leading paths, so it's just the file name. This allows you to consume
recursively into sub-directories, but when you eg write the files to another
directory they will be written in a single directory. Setting this to
<code>true</code> on the producer enforces that any file name recived in
<code>CamelFileName</code> header will be stripped for any leading
paths.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>charset</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.3:</strong> this option
is used to specify the encoding of the file. You can use this on the consumer,
to specify the encodings of the files, which allow Camel to know the charset it
should load the file content in case the file content is bei
ng accessed. Likewise when writing a file, you can use this option to specify
which charset to write the file as well. See further below for a examples and
more important details.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>copyAndDeleteOnRenameFail</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9</strong>:
whether to fallback and do a copy and delete file, in case the file could not
be renamed directly. This option is not available for the <a shape="rect"
href="ftp2.html">FTP</a> component.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>renameUsingCopy</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.13.1</strong>:
Perform rename operations using a copy and delete strategy. This is primarily
used in e
nvironments where the regular rename operation is unreliable (e.g. across
different file systems or networks). This option takes precedence over the
<code>copyAndDeleteOnRenameFail</code> parameter that will automatically fall
back to the copy and delete strategy, but only after additional
delays.</p></td></tr></tbody></table></div></div><h4
id="BookComponentAppendix-Consumer">Consumer</h4><div
class="confluenceTableSmall"><div class="table-wrap"><table
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1"
class="confluenceTh"><p>Name</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Default Value</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>initialDelay</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>1000</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>Milliseconds before polling the
file/directory starts.</p></td></tr>
<tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>delay</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>500</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Milliseconds before the next poll of the
file/directory.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>useFixedDelay</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p> </p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Controls if fixed delay or fixed rate is used. See <a
shape="rect" class="external-link"
href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/concurrent/ScheduledExecutorService.html";
rel="nofollow">ScheduledExecutorService</a> in JDK for details. In
<strong>Camel 2.7.x</strong> or older the default value is <code>false</code>.
From <strong>Camel 2.8</strong> onwards the default value is
<code>true</code>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>runLoggingLevel</
code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>TRACE</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.8:</strong> The consumer logs a
start/complete log line when it polls. This option allows you to configure the
logging level for that.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>recursive</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>If a directory, will look for files in all
the sub-directories as well.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>delete</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>false</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>If <code>true</code>, the file will be deleted
<strong>after</strong> it is processed successfully.</p></td></tr><tr><td
colspan="1" rowspan="1" class="confluenceTd"><p><
code>noop</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>false</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>If <code>true</code>, the file is not moved or deleted
in any way. This option is good for readonly data, or for <a shape="rect"
href="etl.html">ETL</a> type requirements. If <code>noop=true</code>, Camel
will set <code>idempotent=true</code> as well, to avoid consuming the same
files over and over again.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>preMove</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><a shape="rect"
href="expression.html">Expression</a> (such as <a shape="rect"
href="file-language.html">File Language</a>) used to dynamically set the
filename when moving it <strong>before</strong> processing. For example to move
in-progress files into the <code>order</code> directory set this value to
<code>order</code>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>move</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>.camel</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><a shape="rect" href="expression.html">Expression</a>
(such as <a shape="rect" href="file-language.html">File Language</a>) used to
dynamically set the filename when moving it <strong>after</strong> processing.
To move files into a <code>.done</code> subdirectory just enter
<code>.done</code>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>moveFailed</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><a shape="rect"
href="expression.html">Expression</a> (such as <a shape="rect"
href="file-language.html">File Language</a>) used to dynamically set a
different target directory when moving files <em>in case of</em> processin
g (configured via <code>move</code> defined above) failed. For example, to
move files into a <code>.error</code> subdirectory use: <code>.error</code>.
Note: When moving the files to the “fail” location Camel will
<strong>handle</strong> the error and will not pick up the file
again.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>include</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Is used to include files, if filename
matches the regex pattern.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>exclude</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Is used to exclude files, if filename
matches the regex pattern.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>antInclude</code></p></td><td colspan="
1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong>
Ant style filter inclusion, for example
<code>antInclude=*</code><code><strong>/</strong></code><code>.txt</code>.
Multiple inclusions may be specified in comma-delimited format. See <a
shape="rect"
href="#BookComponentAppendix-FilteringusingANTpathmatcher">below</a> for more
details about ant path filters.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>antExclude</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong> Ant style
filter exclusion. If both <code>antInclude</code> and <code>antExclude</code>
are used, <code>antExclude</code> takes precedence over
<code>antInclude</code>. Multiple exclusions may be specified in
comma-delimited format. See <a shape="rect" href="#BookComponentAppendix-
FilteringusingANTpathmatcher">below</a> for more details about ant path
filters.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>antFilterCaseSensitive</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.11:</strong>
Ant style filter which is case sensitive or not.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>idempotent</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Option to use the <a shape="rect"
href="idempotent-consumer.html">Idempotent Consumer</a> EIP pattern to let
Camel skip already processed files. Will by default use a memory based LRUCache
that holds 1000 entries. If <code>noop=true</code> then idempotent will be
enabled as well to avoid consuming the same files over and over
again.</p></td></tr><tr><td colspan
="1" rowspan="1"
class="confluenceTd"><p><code>idempotentKey</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>Expression</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.11:</strong> To
use a custom idempotent key. By default the absolute path of the file is used.
You can use the <a shape="rect" href="file-language.html">File Language</a>,
for example to use the file name and file size, you can do:</p><div class="code
panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
<script class="theme: Default; brush: java; gutter: false"
type="syntaxhighlighter"><![CDATA[idempotentKey=${file:name}-${file:size}]]></script>
-</div></div><p>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>idempotentRepository</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>A pluggable repository <a
shape="rect" class="external-link"
href="http://camel.apache.org/maven/current/camel-core/apidocs/org/apache/camel/spi/IdempotentRepository.html";>org.apache.camel.spi.IdempotentRepository</a>
which by default use <code>MemoryMessageIdRepository</code> if none is
specified and <code>idempotent</code> is
<code>true</code>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>inProgressRepository</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>memory</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>A pluggable in-progress
repository <a shape="rect" class="external-link"
href="http://camel.apache.org/maven/current/camel-core/apidocs/org/apache/
camel/spi/IdempotentRepository.html">org.apache.camel.spi.IdempotentRepository</a>.
The in-progress repository is used to account the current in progress files
being consumed. By default a memory based repository is
used.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>filter</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Pluggable filter as a
<code>org.apache.camel.component.file.GenericFileFilter</code> class. Will skip
files if filter returns <code>false</code> in its <code>accept()</code> method.
More details in section below.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><code>shuffle</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><code>false</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><strong>Camel 2.16:</strong> To shuffle the list of files
(sort in random order)</td></tr><tr><td colspan="1" rowspan="1" c
lass="confluenceTd"><p><code>sorter</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Pluggable sorter as a <a shape="rect"
class="external-link"
href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html";
rel="nofollow">java.util.Comparator<org.apache.camel.component.file.GenericFile></a>
class.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>sortBy</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Built-in sort using the <a shape="rect"
href="file-language.html">File Language</a>. Supports nested sorts, so you can
have a sort by file name and as a 2nd group sort by modified date. See sorting
section below for details.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLock</code></p></td><td colspan="1"
rowspan="1" class=
"confluenceTd"><p><code>none</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Used by consumer, to only poll the files if it has
exclusive read-lock on the file (i.e. the file is not in-progress or being
written). Camel will wait until the file lock is granted. <br clear="none"
class="atl-forced-newline"> This option provides the build in strategies: <br
clear="none"
class="atl-forced-newline"><span> </span><code>none</code><span> is for no
read locks at all.</span> <br clear="none"><code style="line-height:
1.4285715;"> markerFile</code><span style="line-height: 1.4285715;"> Camel
creates a marker file (fileName.camelLock) and then holds a lock on it. This
option is </span><strong style="line-height: 1.4285715;">not</strong><span
style="line-height: 1.4285715;"> available for the </span><a shape="rect"
href="ftp2.html">FTP</a><span style="line-height: 1.4285715;"> component.
</span></p><p><code>changed</code> is using file length/modification timestamp
to det
ect whether the file is currently being copied or not. Will at least use 1
sec. to determine this, so this option cannot consume files as fast as the
others, but can be more reliable as the JDK IO API cannot always determine
whether a file is currently being used by another process. The option
<code>readLockCheckInterval</code> can be used to set the check frequency. This
option is <strong>only</strong> avail for the <a shape="rect"
href="ftp2.html">FTP</a> component from <strong>Camel 2.8</strong> onwards.
Notice that from <strong>Camel 2.10.1</strong> onwards the <a shape="rect"
href="ftp2.html">FTP</a> option <code>fastExistsCheck</code> can be enabled to
speedup this readLock strategy, if the FTP server support the LIST operation
with a full file name (some servers may not). <br clear="none"
class="atl-forced-newline"> <code>fileLock</code> is for using
<code>java.nio.channels.FileLock</code>. This option is <strong>not</strong>
avail for the <a shape="rect" href="ftp2.html">FTP
</a> component. This approach should be avoided when accessing a remote file
system via a mount/share unless that file system supports distributed file
locks. <br clear="none" class="atl-forced-newline"> <code>rename</code> is for
using a try to rename the file as a test if we can get exclusive read-lock. <br
clear="none"><code style="line-height: 1.4285715;">idempotent</code><span
style="line-height: 1.4285715;"> <strong>Camel 2.16</strong> (only file
component) is for using a <code>idempotentRepository</code> as the read-lock.
This allows to use read locks that supports clustering if the idempotent
repository implementation supports that. </span></p><p><strong>Notice</strong>:
The various read locks is not all suited to work in clustered mode, where
concurrent consumers on different nodes is competing for the same files on a
shared file system. The markerFile using a close to atomic operation to create
the empty marker file, but its not guaranteed to work in a cluster. The fileLoc
k may work better but then the file system need to support distributed file
locks, and so on. Using the <code>idempotent</code> read lock can support
clustering if the idempotent repository supports clustering, such as <a
shape="rect" href="hazelcast-component.html">Hazelcast Component</a> or <a
shape="rect" href="infinispan.html">Infinispan</a>.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockTimeout</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>10000</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Optional timeout in millis for the
read-lock, if supported by the read-lock. If the read-lock could not be granted
and the timeout triggered, then Camel will skip the file. At next poll Camel,
will try the file again, and this time maybe the read-lock could be granted.
Use a value of 0 or lower to indicate forever. In <strong>Camel 2.0</strong>
the default value is 0. Starting with <strong>Camel 2.1</strong>
the default value is 10000. Currently <code>fileLock</code>,
<code>changed</code> and <code>rename</code> support the timeout.
<strong>Notice:</strong> For <a shape="rect" href="ftp2.html">FTP</a> the
default <code>readLockTimeout</code> value is <code>20000</code> instead of
<code>10000</code>. The readLockTimeout value must be higher than
readLockCheckInterval, but a rule of thumb is to have a timeout that is at
least 2 or more times higher than the readLockCheckInterval. This is needed to
ensure that amble time is allowed for the read lock process to try to grab the
lock before the timeout was hit.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockCheckInterval</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>1000</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.6:</strong>
Interval in millis for the read-lock, if supported by the read lock. This
interval is used for sleeping between attem
pts to acquire the read lock. For example when using the <code>changed</code>
read lock, you can set a higher interval period to cater for <em>slow
writes</em>. The default of 1 sec. may be <em>too fast</em> if the producer is
very slow writing the file. For <a shape="rect" href="ftp2.html">FTP</a> the
default <code>readLockCheckInterval</code> is <code>5000</code>. <span>The
readLockTimeout value must be higher than readLockCheckInterval, but a rule of
thumb is to have a timeout that is at least 2 or more times higher than the
readLockCheckInterval. This is needed to ensure that amble time is allowed for
the read lock process to try to grab the lock before the timeout was
hit.</span></p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockMinLength</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>1</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.1:</strong> This option
applied only for <code>re
adLock=changed</code>. This option allows you to configure a minimum file
length. By default Camel expects the file to contain data, and thus the default
value is 1. You can set this option to zero, to allow consuming zero-length
files.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><code>readLockMinAge</code></td><td colspan="1"
rowspan="1" class="confluenceTd"><code>0</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><strong>Camel 2.15</strong>: This option applied only for
readLock=change. This options allows to specify a minimum age the file must be
before attempting to acquire the read lock. For example use readLockMinAge=300s
to require the file is at last 5 minutes old. This can speedup the changed read
lock as it will only attempt to acquire files which are at least that given
age. Notice for FTP users then file timestamps reported from FTP servers often
are only in minutes precision, so the min age check would often requires to be
reported in mi
nutes, eg 60000 for 1 minute. Notice Camel support specifying this as 60s, or
1m, etc.</td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockLoggingLevel</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>WARN</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong>
Logging level used when a read lock could not be acquired. By default a WARN is
logged. You can change this level, for example to OFF to not have any logging.
This option is only applicable for readLock of types: changed, fileLock,
rename.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockMarkerFile</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.14:</strong> Whether to use
marker file with the <code>changed</code>, <code>rename</code>, or
<code>exclusive</code> read lock types. By default a m
arker file is used as well to guard against other processes picking up the
same files. This behavior can be turned off by setting this option to
<code>false</code>. For example if you do not want to write marker files to the
file systems by the Camel application.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><code>readLockRemoveOnCommit</code></td><td
colspan="1" rowspan="1" class="confluenceTd"><code>true</code></td><td
colspan="1" rowspan="1" class="confluenceTd"><strong>Camel 2.16:</strong> This
option applied only for readLock=idempotent. This option allows to specify
whether to remove the file name entry from the idempotent repository when the
file was processed successfully and is committed. Setting this to false allows
to use the read lock as both read lock and idempotent consumer at the same
time, as previously processed file will be kept in the idempotent repository so
the same file is not processed again.</td></tr><tr><td colspan="1" rowspan="1"
class="
confluenceTd"><code>readLockRemoveOnRollback</code></td><td colspan="1"
rowspan="1" class="confluenceTd"><code>true</code></td><td colspan="1"
rowspan="1" class="confluenceTd"><strong>Camel 2.16:</strong> This option
applied only for readLock=idempotent. This option allows to specify whether to
remove the file name entry from the idempotent repository when processing the
file failed and a rollback happens.</td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>directoryMustExist</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.5:</strong> Similar to
<code>startingDirectoryMustExist</code> but this applies during polling
recursive sub directories.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>doneFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" clas
s="confluenceTd"><p><strong>Camel 2.6:</strong> If provided, Camel will only
consume files if a <em>done</em> file exists. This option configures what file
name to use. Either you can specify a fixed name. Or you can use dynamic
placeholders. The <em>done</em> file is <strong>always</strong> expected in the
same folder as the original file. See <em>using done file</em> and <em>writing
done file</em> sections for examples.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>exclusiveReadLockStrategy</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>Pluggable read-lock as a
<code>org.apache.camel.component.file.GenericFileExclusiveReadLockStrategy</code>
implementation.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>maxMessagesPerPoll</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td colspan="1" ro
wspan="1" class="confluenceTd"><p>An integer to define a maximum messages to
gather per poll. By default no maximum is set. Can be used to set a limit of
e.g. 1000 to avoid when starting up the server that there are thousands of
files. Set a value of 0 or negative to disabled it. See more details at <a
shape="rect" href="batch-consumer.html">Batch Consumer</a>.
<strong>Notice:</strong> If this option is in use then the <a shape="rect"
href="file2.html">File</a> and <a shape="rect" href="ftp2.html">FTP</a>
components will limit <strong>before</strong> any sorting. For example if you
have 100000 files and use <code>maxMessagesPerPoll=500</code>, then only the
first 500 files will be picked up, and then sorted. You can use the
<code>eagerMaxMessagesPerPoll</code> option and set this to <code>false</code>
to allow to scan all files first and then sort afterwards.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>eagerMaxMessagesPerPoll</code></p></td><td colspan
="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.3:</strong>
Allows for controlling whether the limit from <code>maxMessagesPerPoll</code>
is eager or not. If eager then the limit is during the scanning of files. Where
as <code>false</code> would scan all files, and then perform sorting. Setting
this option to <code>false</code> allows for sorting all files first, and then
limit the poll. Mind that this requires a higher memory usage as all file
details are in memory to perform the sorting.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>minDepth</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>0</p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.8</strong>: The minimum
depth to start processing when recursively processing a directory. Using
<code>minDepth=1</code> means the base directory. Using <code>minDepth=2</code>
means t
he first sub directory. This option is supported by <a shape="rect"
href="ftp2.html">FTP</a> consumer from <strong>Camel 2.8.2, 2.9</strong>
onwards.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>maxDepth</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>Integer.MAX_VALUE</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.8:</strong> The
maximum depth to traverse when recursively processing a directory. This option
is supported by <a shape="rect" href="ftp2.html">FTP</a> consumer from
<strong>Camel 2.8.2, 2.9</strong> onwards.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>processStrategy</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>A pluggable
<code>org.apache.camel.component.file.GenericFileProcessStrategy</code>
allowing you to implement your own <code>readLock</code> opt
ion or similar. Can also be used when special conditions must be met before a
file can be consumed, such as a special <em>ready</em> file exists. If this
option is set then the <code>readLock</code> option does not
apply.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>startingDirectoryMustExist</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.5:</strong>
Whether the starting directory must exist. Mind that the
<code>autoCreate</code> option is default enabled, which means the starting
directory is normally auto created if it doesn't exist. You can disable
<code>autoCreate</code> and enable this to ensure the starting directory must
exist. Will thrown an exception if the directory doesn't
exist.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>pollStrategy</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd">
<p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>A pluggable
<code>org.apache.camel.spi.PollingConsumerPollStrategy</code> allowing you to
provide your custom implementation to control error handling usually occurred
during the <code>poll</code> operation <strong>before</strong> an <a
shape="rect" href="exchange.html">Exchange</a> have been created and being
routed in Camel. In other words the error occurred while the polling was
gathering information, for instance access to a file network failed so Camel
cannot access it to scan for files. The default implementation will log the
caused exception at <code>WARN</code> level and ignore it.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>sendEmptyMessageWhenIdle</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9:</strong> If
the polling consumer did not poll any file
s, you can enable this option to send an empty message (no body)
instead.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>consumer.bridgeErrorHandler</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong>
Allows for bridging the consumer to the Camel routing <a shape="rect"
href="error-handler.html">Error Handler</a>, which mean any exceptions occurred
while trying to pickup files, or the likes, will now be processed as a message
and handled by the routing <a shape="rect" href="error-handler.html">Error
Handler</a>. By default the consumer will use the
<code>org.apache.camel.spi.ExceptionHandler</code> to deal with exceptions,
that by default will be logged at WARN/ERROR level and ignored. See further
below on this page fore more details, at section <em>How to use the Camel error
handler to deal with exceptions triggered outside the routi
ng engine</em>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>scheduledExecutorService</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong>
Allows for configuring a custom/shared thread pool to use for the consumer. By
default each consumer has its own single threaded thread pool. This option
allows you to share a thread pool among multiple file
consumers.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>scheduler</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong> To use a
custom scheduler to trigger the consumer to run. See more details at <a
shape="rect" href="polling-consumer.html">Polling Consumer</a>, for example
there is a <a shape="rect" href="quartz2.html">Quartz2</a>, and <a shape
="rect" href="spring.html">Spring</a> based scheduler that supports CRON
expressions.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>backoffMultiplier</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong> To let the
scheduled polling consumer backoff if there has been a number of subsequent
idles/errors in a row. The multiplier is then the number of polls that will be
skipped before the next actual attempt is happening again. When this option is
in use then <code>backoffIdleThreshold</code> and/or
<code>backoffErrorThreshold</code> must also be configured. See more details at
<a shape="rect" href="polling-consumer.html">Polling
Consumer</a>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>backoffIdleThreshold</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td
colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong> The number of
subsequent idle polls that should happen before the
<code>backoffMultipler</code> should kick-in.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>backoffErrorThreshold</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong>
The number of subsequent error polls (failed due some error) that should happen
before the <code>backoffMultipler</code> should kick-in.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><code>onCompletionExceptionHandler</code></td><td
colspan="1" rowspan="1" class="confluenceTd"> </td><td colspan="1"
rowspan="1" class="confluenceTd"><strong>Camel 2.16:</strong> To use a custom
<code>org.apache.camel.spi.ExceptionHandler</code> to handle any thrown
exceptions that happens during the file on completion process where the consu
mer does either a commit or rollback. The default implementation will log any
exception at WARN level and ignore.</td></tr></tbody></table></div></div><h4
id="BookComponentAppendix-Defaultbehaviorforfileconsumer">Default behavior for
file consumer</h4><ul><li>By default the file is <strong>not</strong> locked
for the duration of the processing.</li><li>After the route has completed,
files are moved into the <code>.camel</code> subdirectory, so that they appear
to be deleted.</li><li>The File Consumer will always skip any file whose name
starts with a dot, such as <code>.</code>, <code>.camel</code>,
<code>.m2</code> or <code>.groovy</code>.</li><li>Only files (not directories)
are matched for valid filename, if options such as: <code>include</code> or
<code>exclude</code> are used.</li></ul><h4
id="BookComponentAppendix-Producer">Producer</h4><div
class="confluenceTableSmall"><div class="table-wrap"><table
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" class="conflue
nceTh"><p>Name</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Default Value</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>fileExist</code></p></td><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>Override</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>What to do if a file already exists with
the same name. The following values can be specified:
<strong>Override</strong>, <strong>Append</strong>, <strong>Fail</strong>,
<strong>Ignore</strong>, <strong>Move</strong>, and <strong>TryRename</strong>
(Camel 2.11.1). <code>Override</code>, which is the default, replaces the
existing file. <code>Append</code> adds content to the existing file.
<code>Fail</code> throws a <code>GenericFileOperationException</code>,
indicating that there is already an existing file. <code>Ignore</code> silently
ignores the problem and <strong>does not</strong> override
the existing file, but assumes everything is okay. The <code>Move</code>
option requires <strong>Camel 2.10.1</strong> onwards, and the corresponding
<code>moveExisting</code> option to be configured as well. The option
<code>eagerDeleteTargetFile</code> can be used to control what to do if an
moving the file, and there exists already an existing file, otherwise causing
the move operation to fail. The <code>Move</code> option will move any existing
files, before writing the target file. <code>TryRename</code> <strong>Camel
2.11.1</strong> is only applicable if <code>tempFileName</code> option is in
use. This allows to try renaming the file from the temporary name to the actual
name, without doing any exists check. This check may be faster on some file
systems and especially FTP servers.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>tempPrefix</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" row
span="1" class="confluenceTd"><p>This option is used to write the file using a
temporary name and then, after the write is complete, rename it to the real
name. Can be used to identify files being written and also avoid consumers (not
using exclusive read locks) reading in progress files. Is often used by <a
shape="rect" href="ftp2.html">FTP</a> when uploading big
files.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>tempFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.1:</strong> The
<strong>same</strong> as <code>tempPrefix</code> option but offering a more
fine grained control on the naming of the temporary filename as it uses the <a
shape="rect" href="file-language.html">File Language</a>.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>moveExisting</code></p></td><td colspan="1"
rowspan="1" class="conflue
nceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.10.1:</strong> <a shape="rect"
href="expression.html">Expression</a> (such as <a shape="rect"
href="file-language.html">File Language</a>) used to compute file name to use
when <code>fileExist=Move</code> is configured. To move files into a
<code>backup</code> subdirectory just enter <code>backup</code>. This option
only supports the following <a shape="rect" href="file-language.html">File
Language</a> tokens: "file:name", "file:name.ext", "file:name.noext",
"file:onlyname", "file:onlyname.noext", "file:ext", and "file:parent". Notice
the "file:parent" is not supported by the <a shape="rect"
href="ftp2.html">FTP</a> component, as the FTP component can only move any
existing files to a relative directory based on current dir as
base.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>keepLastModified</code></p></td><td colspan="1"
rowspan="1" class="confluen
ceTd"><p><code>false</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.2:</strong> Will keep the last modified
timestamp from the source file (if any). Will use the
<code>Exchange.FILE_LAST_MODIFIED</code> header to located the timestamp. This
header can contain either a <code>java.util.Date</code> or <code>long</code>
with the timestamp. If the timestamp exists and the option is enabled it will
set this timestamp on the written file. <strong>Note:</strong> This option only
applies to the <strong>file</strong> producer. You <em>cannot</em> use this
option with any of the ftp producers.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>eagerDeleteTargetFile</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong>
Whether or not to eagerly delete any existing target file. This option only
applies when you use <cod
e>fileExists=Override</code> and the <code>tempFileName</code> option as well.
You can use this to disable (set it to false) deleting the target file before
the temp file is written. For example you may write big files and want the
target file to exists during the temp file is being written. This ensure the
target file is only deleted until the very last moment, just before the temp
file is being renamed to the target filename. From <strong>Camel
2.10.1</strong> onwards this option is also used to control whether to delete
any existing files when <code>fileExist=Move</code> is enabled, and an existing
file exists. If this option copyAndDeleteOnRenameFailis false, then an
exception will be thrown if an existing file existed, if its true, then the
existing file is deleted before the move operation.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>doneFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td cols
pan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.6:</strong> If
provided, then Camel will write a 2nd <em>done</em> file when the original file
has been written. The <em>done</em> file will be empty. This option configures
what file name to use. Either you can specify a fixed name. Or you can use
dynamic placeholders. The <em>done</em> file will <strong>always</strong> be
written in the same folder as the original file. See <em>writing done file</em>
section for examples.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>allowNullBody</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.1:</strong> Used to
specify if a null body is allowed during file writing. If set to true then an
empty file will be created, when set to false, and attempting to send a null
body to the file component, a GenericFileWriteException of 'Cannot write null bo
dy to file.' will be thrown. If the `fileExist` option is set to 'Override',
then the file will be truncated, and if set to `append` the file will remain
unchanged.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>forceWrites</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.5/2.11:</strong> Whether
to force syncing writes to the file system. You can turn this off if you do not
want this level of guarantee, for example if writing to logs / audit logs etc;
this would yield better performance.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>chmod</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><strong>Camel 2.15.0</strong>: Specify the
file p<span style="line-height: 1.4285715;">ermissions which is sent by the
producer</span>, t
he <span style="line-height: 1.4285715;">chmod value must be between 000 and
777; If there is a leading digit like in 0755 we will ignore
it.</span></td></tr></tbody></table></div></div><h4
id="BookComponentAppendix-Defaultbehaviorforfileproducer">Default behavior for
file producer</h4><ul><li>By default it will override any existing file, if one
exist with the same name.</li></ul><h3
id="BookComponentAppendix-MoveandDeleteoperations">Move and Delete
operations</h3><p>Any move or delete operations is executed after (post
command) the routing has completed; so during processing of the
<code>Exchange</code> the file is still located in the inbox folder.</p><p>Lets
illustrate this with an example:</p><div class="code panel pdl"
style="border-width: 1px;"><div class="codeContent panelContent pdl">
+</div></div><p>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>idempotentRepository</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>A pluggable repository <a
shape="rect" class="external-link"
href="http://camel.apache.org/maven/current/camel-core/apidocs/org/apache/camel/spi/IdempotentRepository.html";>org.apache.camel.spi.IdempotentRepository</a>
which by default use <code>MemoryMessageIdRepository</code> if none is
specified and <code>idempotent</code> is
<code>true</code>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>inProgressRepository</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>memory</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p>A pluggable in-progress
repository <a shape="rect" class="external-link"
href="http://camel.apache.org/maven/current/camel-core/apidocs/org/apache/
camel/spi/IdempotentRepository.html">org.apache.camel.spi.IdempotentRepository</a>.
The in-progress repository is used to account the current in progress files
being consumed. By default a memory based repository is
used.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>filter</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Pluggable filter as a
<code>org.apache.camel.component.file.GenericFileFilter</code> class. Will skip
files if filter returns <code>false</code> in its <code>accept()</code> method.
More details in section below.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><code>shuffle</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><code>false</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><strong>Camel 2.16:</strong> To shuffle the list of files
(sort in random order)</td></tr><tr><td colspan="1" rowspan="1" c
lass="confluenceTd"><p><code>sorter</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Pluggable sorter as a <a shape="rect"
class="external-link"
href="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html";
rel="nofollow">java.util.Comparator<org.apache.camel.component.file.GenericFile></a>
class.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>sortBy</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Built-in sort using the <a shape="rect"
href="file-language.html">File Language</a>. Supports nested sorts, so you can
have a sort by file name and as a 2nd group sort by modified date. See sorting
section below for details.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLock</code></p></td><td colspan="1"
rowspan="1" class=
"confluenceTd"><p><code>none</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Used by consumer, to only poll the files if it has
exclusive read-lock on the file (i.e. the file is not in-progress or being
written). Camel will wait until the file lock is granted. <br clear="none"
class="atl-forced-newline"> This option provides the build in strategies: <br
clear="none"
class="atl-forced-newline"><span> </span><code>none</code><span> is for no
read locks at all.</span> <br clear="none"><code style="line-height:
1.4285715;"> markerFile</code><span style="line-height: 1.4285715;"> Camel
creates a marker file (fileName.camelLock) and then holds a lock on it. This
option is </span><strong style="line-height: 1.4285715;">not</strong><span
style="line-height: 1.4285715;"> available for the </span><a shape="rect"
href="ftp2.html">FTP</a><span style="line-height: 1.4285715;"> component.
</span></p><p><code>changed</code> is using file length/modification timestamp
to det
ect whether the file is currently being copied or not. Will at least use 1
sec. to determine this, so this option cannot consume files as fast as the
others, but can be more reliable as the JDK IO API cannot always determine
whether a file is currently being used by another process. The option
<code>readLockCheckInterval</code> can be used to set the check frequency. This
option is <strong>only</strong> avail for the <a shape="rect"
href="ftp2.html">FTP</a> component from <strong>Camel 2.8</strong> onwards.
Notice that from <strong>Camel 2.10.1</strong> onwards the <a shape="rect"
href="ftp2.html">FTP</a> option <code>fastExistsCheck</code> can be enabled to
speedup this readLock strategy, if the FTP server support the LIST operation
with a full file name (some servers may not). <br clear="none"
class="atl-forced-newline"> <code>fileLock</code> is for using
<code>java.nio.channels.FileLock</code>. This option is <strong>not</strong>
avail for the <a shape="rect" href="ftp2.html">FTP
</a> component. This approach should be avoided when accessing a remote file
system via a mount/share unless that file system supports distributed file
locks. <br clear="none" class="atl-forced-newline"> <code>rename</code> is for
using a try to rename the file as a test if we can get exclusive read-lock. <br
clear="none"><code style="line-height: 1.4285715;">idempotent</code><span
style="line-height: 1.4285715;"> <strong>Camel 2.16</strong> (only file
component) is for using a <code>idempotentRepository</code> as the read-lock.
This allows to use read locks that supports clustering if the idempotent
repository implementation supports that. </span></p><p><strong>Notice</strong>:
The various read locks is not all suited to work in clustered mode, where
concurrent consumers on different nodes is competing for the same files on a
shared file system. The markerFile using a close to atomic operation to create
the empty marker file, but its not guaranteed to work in a cluster. The fileLoc
k may work better but then the file system need to support distributed file
locks, and so on. Using the <code>idempotent</code> read lock can support
clustering if the idempotent repository supports clustering, such as <a
shape="rect" href="hazelcast-component.html">Hazelcast Component</a> or <a
shape="rect" href="infinispan.html">Infinispan</a>.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockTimeout</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>10000</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>Optional timeout in millis for the
read-lock, if supported by the read-lock. If the read-lock could not be granted
and the timeout triggered, then Camel will skip the file. At next poll Camel,
will try the file again, and this time maybe the read-lock could be granted.
Use a value of 0 or lower to indicate forever. In <strong>Camel 2.0</strong>
the default value is 0. Starting with <strong>Camel 2.1</strong>
the default value is 10000. Currently <code>fileLock</code>,
<code>changed</code> and <code>rename</code> support the timeout.
<strong>Notice:</strong> For <a shape="rect" href="ftp2.html">FTP</a> the
default <code>readLockTimeout</code> value is <code>20000</code> instead of
<code>10000</code>. The readLockTimeout value must be higher than
readLockCheckInterval, but a rule of thumb is to have a timeout that is at
least 2 or more times higher than the readLockCheckInterval. This is needed to
ensure that amble time is allowed for the read lock process to try to grab the
lock before the timeout was hit.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockCheckInterval</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>1000</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.6:</strong>
Interval in millis for the read-lock, if supported by the read lock. This
interval is used for sleeping between attem
pts to acquire the read lock. For example when using the <code>changed</code>
read lock, you can set a higher interval period to cater for <em>slow
writes</em>. The default of 1 sec. may be <em>too fast</em> if the producer is
very slow writing the file. For <a shape="rect" href="ftp2.html">FTP</a> the
default <code>readLockCheckInterval</code> is <code>5000</code>. <span>The
readLockTimeout value must be higher than readLockCheckInterval, but a rule of
thumb is to have a timeout that is at least 2 or more times higher than the
readLockCheckInterval. This is needed to ensure that amble time is allowed for
the read lock process to try to grab the lock before the timeout was
hit.</span></p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockMinLength</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>1</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.1:</strong> This option
applied only for <code>re
adLock=changed</code>. This option allows you to configure a minimum file
length. By default Camel expects the file to contain data, and thus the default
value is 1. You can set this option to zero, to allow consuming zero-length
files.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><code>readLockMinAge</code></td><td colspan="1"
rowspan="1" class="confluenceTd"><code>0</code></td><td colspan="1" rowspan="1"
class="confluenceTd"><strong>Camel 2.15</strong>: This option applied only for
readLock=change. This options allows to specify a minimum age the file must be
before attempting to acquire the read lock. For example use readLockMinAge=300s
to require the file is at last 5 minutes old. This can speedup the changed read
lock as it will only attempt to acquire files which are at least that given
age. Notice for FTP users then file timestamps reported from FTP servers often
are only in minutes precision, so the min age check would often requires to be
reported in mi
nutes, eg 60000 for 1 minute. Notice Camel support specifying this as 60s, or
1m, etc.</td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockLoggingLevel</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>WARN</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong>
Logging level used when a read lock could not be acquired. By default a WARN is
logged. You can change this level, for example to OFF to not have any logging.
This option is only applicable for readLock of types: changed, fileLock,
rename.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>readLockMarkerFile</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.14:</strong> Whether to use
marker file with the <code>changed</code>, <code>rename</code>, or
<code>exclusive</code> read lock types. By default a m
arker file is used as well to guard against other processes picking up the
same files. This behavior can be turned off by setting this option to
<code>false</code>. For example if you do not want to write marker files to the
file systems by the Camel application.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><code>readLockRemoveOnRollback</code></td><td
colspan="1" rowspan="1" class="confluenceTd"><code>true</code></td><td
colspan="1" rowspan="1" class="confluenceTd"><strong>Camel 2.16:</strong> This
option applied only for readLock=idempotent. This option allows to specify
whether to remove the file name entry from the idempotent repository when
processing the file failed and a rollback happens. If this option is false,
then the file name entry is confirmed (as if the file did a
commit).</td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>directoryMustExist</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></
p></td><td colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel
2.5:</strong> Similar to <code>startingDirectoryMustExist</code> but this
applies during polling recursive sub directories.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>doneFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.6:</strong> If provided,
Camel will only consume files if a <em>done</em> file exists. This option
configures what file name to use. Either you can specify a fixed name. Or you
can use dynamic placeholders. The <em>done</em> file is <strong>always</strong>
expected in the same folder as the original file. See <em>using done file</em>
and <em>writing done file</em> sections for examples.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>exclusiveReadLockStrategy</code></p></td><td
colspan="1" rowspan="1" class="confluence
Td"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p>Pluggable read-lock as a
<code>org.apache.camel.component.file.GenericFileExclusiveReadLockStrategy</code>
implementation.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>maxMessagesPerPoll</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>An integer to define a maximum messages to
gather per poll. By default no maximum is set. Can be used to set a limit of
e.g. 1000 to avoid when starting up the server that there are thousands of
files. Set a value of 0 or negative to disabled it. See more details at <a
shape="rect" href="batch-consumer.html">Batch Consumer</a>.
<strong>Notice:</strong> If this option is in use then the <a shape="rect"
href="file2.html">File</a> and <a shape="rect" href="ftp2.html">FTP</a>
components will limit <strong>before</strong> any sorting. For example if yo
u have 100000 files and use <code>maxMessagesPerPoll=500</code>, then only the
first 500 files will be picked up, and then sorted. You can use the
<code>eagerMaxMessagesPerPoll</code> option and set this to <code>false</code>
to allow to scan all files first and then sort afterwards.</p></td></tr><tr><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>eagerMaxMessagesPerPoll</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9.3:</strong>
Allows for controlling whether the limit from <code>maxMessagesPerPoll</code>
is eager or not. If eager then the limit is during the scanning of files. Where
as <code>false</code> would scan all files, and then perform sorting. Setting
this option to <code>false</code> allows for sorting all files first, and then
limit the poll. Mind that this requires a higher memory usage as all file
details are in memory to perform the sorting.</p>
</td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>minDepth</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>0</p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.8</strong>: The minimum depth to start
processing when recursively processing a directory. Using
<code>minDepth=1</code> means the base directory. Using <code>minDepth=2</code>
means the first sub directory. This option is supported by <a shape="rect"
href="ftp2.html">FTP</a> consumer from <strong>Camel 2.8.2, 2.9</strong>
onwards.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>maxDepth</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>Integer.MAX_VALUE</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.8:</strong> The
maximum depth to traverse when recursively processing a directory. This option
is supported by <a shape="rect" href="ftp2.html">FTP</a> consumer from
<strong>Camel
2.8.2, 2.9</strong> onwards.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>processStrategy</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>A pluggable
<code>org.apache.camel.component.file.GenericFileProcessStrategy</code>
allowing you to implement your own <code>readLock</code> option or similar. Can
also be used when special conditions must be met before a file can be consumed,
such as a special <em>ready</em> file exists. If this option is set then the
<code>readLock</code> option does not apply.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>startingDirectoryMustExist</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.5:</strong>
Whether the starting directory must exist. Mind that the
<code>autoCreate</code> option i
s default enabled, which means the starting directory is normally auto created
if it doesn't exist. You can disable <code>autoCreate</code> and enable this to
ensure the starting directory must exist. Will thrown an exception if the
directory doesn't exist.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>pollStrategy</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>A pluggable
<code>org.apache.camel.spi.PollingConsumerPollStrategy</code> allowing you to
provide your custom implementation to control error handling usually occurred
during the <code>poll</code> operation <strong>before</strong> an <a
shape="rect" href="exchange.html">Exchange</a> have been created and being
routed in Camel. In other words the error occurred while the polling was
gathering information, for instance access to a file network failed so Camel
cannot access it to scan for files. The defa
ult implementation will log the caused exception at <code>WARN</code> level
and ignore it.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>sendEmptyMessageWhenIdle</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.9:</strong> If
the polling consumer did not poll any files, you can enable this option to send
an empty message (no body) instead.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>consumer.bridgeErrorHandler</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong>
Allows for bridging the consumer to the Camel routing <a shape="rect"
href="error-handler.html">Error Handler</a>, which mean any exceptions occurred
while trying to pickup files, or the likes, will now be processed as a message
and ha
ndled by the routing <a shape="rect" href="error-handler.html">Error
Handler</a>. By default the consumer will use the
<code>org.apache.camel.spi.ExceptionHandler</code> to deal with exceptions,
that by default will be logged at WARN/ERROR level and ignored. See further
below on this page fore more details, at section <em>How to use the Camel error
handler to deal with exceptions triggered outside the routing
engine</em>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>scheduledExecutorService</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10:</strong>
Allows for configuring a custom/shared thread pool to use for the consumer. By
default each consumer has its own single threaded thread pool. This option
allows you to share a thread pool among multiple file
consumers.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>sch
eduler</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>null</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.12:</strong> To use a custom scheduler
to trigger the consumer to run. See more details at <a shape="rect"
href="polling-consumer.html">Polling Consumer</a>, for example there is a <a
shape="rect" href="quartz2.html">Quartz2</a>, and <a shape="rect"
href="spring.html">Spring</a> based scheduler that supports CRON
expressions.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>backoffMultiplier</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong> To let the
scheduled polling consumer backoff if there has been a number of subsequent
idles/errors in a row. The multiplier is then the number of polls that will be
skipped before the next actual attempt is happening again. When this op
tion is in use then <code>backoffIdleThreshold</code> and/or
<code>backoffErrorThreshold</code> must also be configured. See more details at
<a shape="rect" href="polling-consumer.html">Polling
Consumer</a>.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>backoffIdleThreshold</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong>
The number of subsequent idle polls that should happen before the
<code>backoffMultipler</code> should kick-in.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>backoffErrorThreshold</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>0</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.12:</strong>
The number of subsequent error polls (failed due some error) that should happen
before the <code>backoffMultipler</code> should kick-in.</p></
td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><code>onCompletionExceptionHandler</code></td><td
colspan="1" rowspan="1" class="confluenceTd"> </td><td colspan="1"
rowspan="1" class="confluenceTd"><strong>Camel 2.16:</strong> To use a custom
<code>org.apache.camel.spi.ExceptionHandler</code> to handle any thrown
exceptions that happens during the file on completion process where the
consumer does either a commit or rollback. The default implementation will log
any exception at WARN level and
ignore.</td></tr></tbody></table></div></div><h4
id="BookComponentAppendix-Defaultbehaviorforfileconsumer">Default behavior for
file consumer</h4><ul><li>By default the file is <strong>not</strong> locked
for the duration of the processing.</li><li>After the route has completed,
files are moved into the <code>.camel</code> subdirectory, so that they appear
to be deleted.</li><li>The File Consumer will always skip any file whose name
starts with a dot, such as <code>.</code>, <
code>.camel</code>, <code>.m2</code> or <code>.groovy</code>.</li><li>Only
files (not directories) are matched for valid filename, if options such as:
<code>include</code> or <code>exclude</code> are used.</li></ul><h4
id="BookComponentAppendix-Producer">Producer</h4><div
class="confluenceTableSmall"><div class="table-wrap"><table
class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1"
class="confluenceTh"><p>Name</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Default Value</p></th><th colspan="1" rowspan="1"
class="confluenceTh"><p>Description</p></th></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>fileExist</code></p></td><td
colspan="1" rowspan="1"
class="confluenceTd"><p><code>Override</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>What to do if a file already exists with
the same name. The following values can be specified:
<strong>Override</strong>, <strong>Append</strong>, <strong>Fail</strong>,
<strong>Ignore</strong
>, <strong>Move</strong>, and <strong>TryRename</strong> (Camel 2.11.1).
><code>Override</code>, which is the default, replaces the existing file.
><code>Append</code> adds content to the existing file. <code>Fail</code>
>throws a <code>GenericFileOperationException</code>, indicating that there is
>already an existing file. <code>Ignore</code> silently ignores the problem
>and <strong>does not</strong> override the existing file, but assumes
>everything is okay. The <code>Move</code> option requires <strong>Camel
>2.10.1</strong> onwards, and the corresponding <code>moveExisting</code>
>option to be configured as well. The option
><code>eagerDeleteTargetFile</code> can be used to control what to do if an
>moving the file, and there exists already an existing file, otherwise causing
>the move operation to fail. The <code>Move</code> option will move any
>existing files, before writing the target file. <code>TryRename</code>
><strong>Camel 2.11.1</strong> is only applicable if <code>tempFileName<
/code> option is in use. This allows to try renaming the file from the
temporary name to the actual name, without doing any exists check. This check
may be faster on some file systems and especially FTP
servers.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>tempPrefix</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p>This option is used to write the file using
a temporary name and then, after the write is complete, rename it to the real
name. Can be used to identify files being written and also avoid consumers (not
using exclusive read locks) reading in progress files. Is often used by <a
shape="rect" href="ftp2.html">FTP</a> when uploading big
files.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>tempFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" clas
s="confluenceTd"><p><strong>Camel 2.1:</strong> The <strong>same</strong> as
<code>tempPrefix</code> option but offering a more fine grained control on the
naming of the temporary filename as it uses the <a shape="rect"
href="file-language.html">File Language</a>.</p></td></tr><tr><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>moveExisting</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.1:</strong>
<a shape="rect" href="expression.html">Expression</a> (such as <a shape="rect"
href="file-language.html">File Language</a>) used to compute file name to use
when <code>fileExist=Move</code> is configured. To move files into a
<code>backup</code> subdirectory just enter <code>backup</code>. This option
only supports the following <a shape="rect" href="file-language.html">File
Language</a> tokens: "file:name", "file:name.ext", "file:name.noext",
"file:onlyname", "fi
le:onlyname.noext", "file:ext", and "file:parent". Notice the "file:parent" is
not supported by the <a shape="rect" href="ftp2.html">FTP</a> component, as the
FTP component can only move any existing files to a relative directory based on
current dir as base.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>keepLastModified</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>false</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.2:</strong> Will keep the
last modified timestamp from the source file (if any). Will use the
<code>Exchange.FILE_LAST_MODIFIED</code> header to located the timestamp. This
header can contain either a <code>java.util.Date</code> or <code>long</code>
with the timestamp. If the timestamp exists and the option is enabled it will
set this timestamp on the written file. <strong>Note:</strong> This option only
applies to the <strong>file</strong> producer. You <em>cannot</em> use this
option with any of the ftp producers.</p></td></tr><tr><td colspan="1"
rowspan="1"
class="confluenceTd"><p><code>eagerDeleteTargetFile</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><strong>Camel 2.3:</strong>
Whether or not to eagerly delete any existing target file. This option only
applies when you use <code>fileExists=Override</code> and the
<code>tempFileName</code> option as well. You can use this to disable (set it
to false) deleting the target file before the temp file is written. For example
you may write big files and want the target file to exists during the temp file
is being written. This ensure the target file is only deleted until the very
last moment, just before the temp file is being renamed to the target filename.
From <strong>Camel 2.10.1</strong> onwards this option is also used to control
whether to delete any existing files when <code>fileExist=Move</code> is ena
bled, and an existing file exists. If this option copyAndDeleteOnRenameFailis
false, then an exception will be thrown if an existing file existed, if its
true, then the existing file is deleted before the move
operation.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>doneFileName</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.6:</strong> If provided,
then Camel will write a 2nd <em>done</em> file when the original file has been
written. The <em>done</em> file will be empty. This option configures what file
name to use. Either you can specify a fixed name. Or you can use dynamic
placeholders. The <em>done</em> file will <strong>always</strong> be written in
the same folder as the original file. See <em>writing done file</em> section
for examples.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>allowNullBody</code></p>
</td><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>false</code></p></td><td colspan="1" rowspan="1"
class="confluenceTd"><p><strong>Camel 2.10.1:</strong> Used to specify if a
null body is allowed during file writing. If set to true then an empty file
will be created, when set to false, and attempting to send a null body to the
file component, a GenericFileWriteException of 'Cannot write null body to
file.' will be thrown. If the `fileExist` option is set to 'Override', then the
file will be truncated, and if set to `append` the file will remain
unchanged.</p></td></tr><tr><td colspan="1" rowspan="1"
class="confluenceTd"><p><code>forceWrites</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><code>true</code></p></td><td colspan="1"
rowspan="1" class="confluenceTd"><p><strong>Camel 2.10.5/2.11:</strong> Whether
to force syncing writes to the file system. You can turn this off if you do not
want this level of guarantee, for example if writing to logs / aud
it logs etc; this would yield better performance.</p></td></tr><tr><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>chmod</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><p><code>null</code></p></td><td
colspan="1" rowspan="1" class="confluenceTd"><strong>Camel 2.15.0</strong>:
Specify the file p<span style="line-height: 1.4285715;">ermissions which is
sent by the producer</span>, the <span style="line-height: 1.4285715;">chmod
value must be between 000 and 777; If there is a leading digit like in 0755 we
will ignore it.</span></td></tr></tbody></table></div></div><h4
id="BookComponentAppendix-Defaultbehaviorforfileproducer">Default behavior for
file producer</h4><ul><li>By default it will override any existing file, if one
exist with the same name.</li></ul><h3
id="BookComponentAppendix-MoveandDeleteoperations">Move and Delete
operations</h3><p>Any move or delete operations is executed after (post
command) the routing has completed; so during processing of
the <code>Exchange</code> the file is still located in the inbox
folder.</p><p>Lets illustrate this with an example:</p><div class="code panel
pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
<script class="theme: Default; brush: java; gutter: false"
type="syntaxhighlighter"><![CDATA[
from("file://inbox?move=.done").to("bean:handleOrder");
]]></script>
</div></div><p>When a file is dropped in the <code>inbox</code> folder, the
file consumer notices this and creates a new <code>FileExchange</code> that is
routed to the <code>handleOrder</code> bean. The bean then processes the
<code>File</code> object. At this point in time the file is still located in
the <code>inbox</code> folder. After the bean completes, and thus the route is
completed, the file consumer will perform the move operation and move the file
to the <code>.done</code> sub-folder.</p><p>The <strong>move</strong> and
<strong>preMove</strong> options is considered as a directory name (though if
you use an expression such as <a shape="rect" href="file-language.html">File
Language</a>, or <a shape="rect" href="simple.html">Simple</a> then the result
of the expression evaluation is the file name to be used - eg if you
set</p><div class="code panel pdl" style="border-width: 1px;"><div
class="codeContent panelContent pdl">
