Jmeter suite to upload 1000 multiple format files through put request - performance

Question

I am facing one problem during uploading multiple files on server. I implemented some logic and fetched files one by one from a folder . But in HTTP request my URL is something like {Container name} followed by {Filename}.
My problem is in filename parameter value what should i passed so that every files will be uploaded on server .
My code is as below:-
File folder = new File("c:\\Test1\\Test");
File[] files = folder.listFiles(new FileFilter() {
public boolean accept(File file) {
return file.isFile();
}
});
for (int i=0; i < files.length; i++) {
vars.put("file_" + i, files[i].getAbsolutePath());
}
In file path i am passing this ${filesToUpload} ,parameter name and mimetype

Answer 1

I don't think your way is correct (unless you want to build the full raw body), you should rather invoke HTTPSamplerBase.setHTTPFiles() function using the following example steps:
Add JSR223 PreProcessor as a child of the HTTP Request sampler to which you want to add files
Put the following code into "Script" area:
import org.apache.commons.io.FileUtils
import org.apache.commons.io.filefilter.TrueFileFilter
import org.apache.jmeter.protocol.http.util.HTTPFileArg
import java.nio.file.Files
def files = FileUtils.listFiles(new File("c:/Test1/Test"), TrueFileFilter.INSTANCE, TrueFileFilter.INSTANCE)
def arguments = []
files.eachWithIndex { file, index ->
arguments.add(new HTTPFileArg(file.getAbsolutePath(), "your_parameter_name", Files.probeContentType(file.toPath())))
}
sampler.setHTTPFiles(arguments as HTTPFileArg[])
That's it, the code will dynamically read the files from folder and add the files from it to the request, just make sure to amend your_parameter_name to the real respective value
More information on Groovy scripting in JMeter: Apache Groovy - Why and How You Should Use It