Zipping files with apache camel - zip

Question

i am saving files on path C:\Cdr\core\year\month\date\fileName
and i want to zip all the files created on previous day and before that.I am unable to find a way to provide dynamic file path and file name to file Consumer for zipping files. Even when using filename=${beans:utility.generateFileName}, i am only able to provide file name not the file path.Is there a way to do this using apache Zip file data format.

Answer 1

I found the way for same by using filter
<routeContext id="zipFileRoute" xmlns="http://camel.apache.org/schema/spring">
<route id="zipFile">
<from uri="file://C:/CdrJson?recursive=true&delete=true&filter=#myFilter/>
<log message="reading from ${in.header.CamelFileName} and file path is ${file:path}"/>
<setHeader headerName="CamelFileName">
<simple>${bean:utility?method=processFileName}</simple>
</setHeader>
<marshal>
<zipFile/>
</marshal>
<to uri="file://C:/CdrJson"/>
<log message="This route finished zipping files"/>
</route>
</routeContext>
Code for myFilter:
public class MyFileFilter<T> implements GenericFileFilter<T> {
public boolean accept(GenericFile<T> file) {
// we want all directories
if (file.isDirectory()) {
return true;
}
Calendar date = new GregorianCalendar();
String fileName = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
if(file.getFileNameOnly().startsWith(fileName)){
return false;
}
return !file.getFileName().endsWith(".zip");
}
}

Answer 2

Use GenericFileFilter to filter the file based on created date. Using this at run time you can skip the files not matched with desired criteria.
Ref: http://camel.apache.org/file2
Dynamic path: I am not sure about what level of dynamism you are expecting. File consumer is a polling consumer, one that explicitly makes a call when it wants to receive a message. So you can either hard-code the file path or set dynamic path resolved at run time from property file (Ref:Proertyplaceholder) as below,
<from uri="file:{{consumer.file.path}}"/>
To Zip files: You have to use aggregate pattern as below,
from("file:{{consumer.file.path}}")
.aggregate(new ZipAggregationStrategy())
.constant(true)
.completionFromBatchConsumer()
.eagerCheckCompletion()
.setHeader(Exchange.FILE_NAME, constant("<DesiredFileName>.zip"))
.to("file:output/directory");
Hope it helps!!