copyFileFromContainer - is there a way to copy a folder?

[chomhanks]

I am using copyFileFromContainer to copy a specific file. Often, I am not sure about the name of the file ahead. I want to copy the entire folder to a temp directory and want to perform some operations to find the file. Is there a way we can copy the entire folder?

I am using:

genericContainer.copyFileFromContainer("/data/lib/com/printing-out-params-5.jar", tempFilePath.toAbsolutePath().toString());

[chomhanks]

Can I please get an answer to this question ^^?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. If you believe this is a mistake, please reply to this comment to keep it open. If there isn't one already, a PR to fix or at least reproduce the problem in a test case will always help us get back on track to tackle this.

[stale]

This issue has been automatically closed due to inactivity. We apologise if this is still an active problem for you, and would ask you to re-open the issue if this is the case.

[silver-mx]

An alternative approach is to create a tar.gz file to include the target folder and then copy the tar.gz file:

container.execInContainer("tar",  "-czvf", "/tmp/tarFileName.tar.gz", "/targetFolder")
container.copyFileFromContainer("/tmp/tarFileName.tar.gz", "/folder-to-copy/tarFileName.tar.gz")

[LvargaDS]

Another approach is to copy file by file... You can use my gist if you want. There is also sample usage https://gist.github.com/LvargaDS/da3562c57abffb6edaa4c32ccefa0350

[gianninia]

An alternative approach is to create a tar.gz file to include the target folder and then copy the tar.gz file:

container.execInContainer("tar",  "-czvf", "/tmp/tarFileName.tar.gz", "/targetFolder")
container.copyFileFromContainer("/tmp/tarFileName.tar.gz", "/folder-to-copy/tarFileName.tar.gz")

As the image from my container doesn't have any tar or zip installed, I ended up using the ls command to list the files and copied file by file recursively. Here is the code (in Kotlin) in case someone wants to use (or get inspired by) this approach:

fun GenericContainer<*>.copyFolderContentFromContainer(containerPath: String, destinationPath: String) {
    // ls -p -1 -> -p adds a / to directories and -1 prints each file in a separate line
    execInContainer("ls", "-p", "-1", containerPath).stdout
        .lineSequence().mapNotNull { it.emptyToNull() }
        .forEach { fileName ->
            if (fileName.endsWith('/')) {
                val folderName = fileName.substringBeforeLast('/')
                File(destinationPath, folderName).mkdirs()
                copyFolderContentFromContainer("$containerPath/$folderName", "$destinationPath/$folderName")
            } else {
                copyFileFromContainer("$containerPath/$fileName", "$destinationPath/$fileName")
            }
        }
}