I wish to change the file (or ftp) Camel component behaviour according to some value, for intance the value of a header.
I see in the Camel File documentation I can dynamically change the "CamelFilename" header, but ca we do the same with other options such as "fileexist" ?
My goal is to use only 1 FTP producer to write all files, some of them can be overriden and the others can't.
You can use Camel's .toD(..)
More info: http://camel.apache.org/message-endpoint.html#MessageEndpoint-DynamicTo
Related
My requirement as below,
Starting camel,then processing all of the files with file component ,which is located some folder once.this route is just used once.
So how to configure with spring DSL?
Thanks advance.
Split your requirement as follow
Starting camel
Your research item, cover this will be off-topic in stackoverflow
processing all of the files with file component
Use file component by from, i.e. from("file://...")
is located some folder once
Set a proper parent directory and then use recursive option in file component to enable sub-directories lookup. For further control, you may check following options minDepth, maxDepth, filterDirectory, filter
this route is just used once
Use repeatCount option in file component to control fire count, i.e. repeatCount=1
Combine them together, you have
from("file://path/to/parent/directory?repeatCount=1&recursive=true")
... // follow by your route logic
How do I manage to configure the File component of my Camel Context, so that all directory paths provided to its endpoints are prepended with some base path?
For example, if someone writes
file:input/customer12?include=.*\.csv
it will effectively be
file:/usr/local/share/app/exchange/input/customer12?include=.*\.csv
For example, I get the component during the Camel Context initialization like this:
FileComponent file = CAMELCONTEXT.getComponent("file", FileComponent.class);
What do I do next? createComponentConfiguration()?
addition: It's a standalone cli app which I want to be runnable from any directory
The easiest solution is start your app under folder /usr/local/share/app/exchange , but this is not an option as state in addition requirement
If you have a layer between your user input and your code, then you could inject the path. For example, Java DSL with RouteBuilder.
The last solution is override Camel's file component in component class before it create the actual endpoint.
I have header with filename with extension like this
<setHeader>
<simple>Test.txt</simple>
</setHeader>
I need to fetch only filename ie. Test alone in another header. Can anyone help me to achieve this.
Thanks.
You have multiple options. The examples take the full filename from a header and write the filename without extension into another header.
You write a Java Bean to use full Java power (for example Apache Commons FilenameUtils.getBaseName) and call it from your route. See this Camel documentation how to inject header values into your bean methods. In the route you call the bean like this
.setHeader("filename", method(beanReference, "methodName"))
Or you add camel-groovy to your dependencies to get more scripting power than with Camel Simple. Then you can do it directly in the Camel route
setHeader("filename").groovy("request.headers.get('fullFilename')
.take(request.headers.get('fullFilename').lastIndexOf('.'))")
I have a href link which points to a file on the server but the problem is that it sometimes links to an older version of the file. To be able to access the up-to-date version, i need to clear browsing history/cache. I have tried to clear cache with php, but it doesn't help. Any idea why this is happening, and how to get rid of this problem?
You can add a param to link and force the file download.
link
Multiple ways based on scenarios
Apache Caching directives - If you are the server admin you could use apache's mod_cache to manage caching for specific file(types)
Pass the correct HTML header to the browser directing it not to cache it(its its HTML, PHP etc file where you can control the headers of the request)
Pass a randomly generated number in the end of the url like - url-to-file?1234. where 1234 is a randomly generated number(you could use timestamp also instead of the random number)
I am able to successfully download one/all files from a sftp directory using the following uri in canmel route definition
Download all files
"sftp://userName#serverName/directoryName?knownHostsFile=./known_hosts&privateKeyFile=./id_rsa&proxy=#proxy&noop=true"
Download one file
"sftp://userName#serverName/directoryName?knownHostsFile=./known_hosts&privateKeyFile=./id_rsa&proxy=#proxy&noop=true&fileName=one.txt"
My requirement is to download a specific list of files = one.text, two.text.
How can I pass list of fileNames to the Camel route? Preferablly I am looking for a solution where in I can specify something like the below
"sftp://userName#serverName/directoryName?knownHostsFile=./known_hosts&privateKeyFile=./id_rsa&proxy=#proxy&noop=true&fileName=one.txt,two.txt"
The Camel FTP component extends the File component and many of the options from file is also applicable for the FTP component, so read this page
http://camel.apache.org/file2
You can for example use include to specify a regular expression that matches the files you want. Or implement a custom filter class and use the filter option, etc.