package com.github.dockerjava.cmd;

import com.github.dockerjava.api.command.CreateContainerResponse;

import com.github.dockerjava.api.exception.NotFoundException;

import com.github.dockerjava.core.util.CompressArchiveUtil;

import com.github.dockerjava.utils.TestUtils;

import org.apache.commons.compress.archivers.tar.TarArchiveEntry;

import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;

import org.apache.commons.io.IOUtils;

import org.junit.Test;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import java.io.InputStream;

import java.nio.file.Files;

import java.nio.file.Path;

import java.nio.file.Paths;

import java.nio.file.StandardOpenOption;

import static com.github.dockerjava.core.DockerRule.DEFAULT_IMAGE;

import static org.hamcrest.MatcherAssert.assertThat;

import static org.hamcrest.Matchers.isEmptyOrNullString;

import static org.hamcrest.Matchers.not;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertNull;

import static org.junit.Assert.assertTrue;

public class CopyArchiveFromContainerCmdIT extends CmdIT {

public static final Logger LOG = LoggerFactory.getLogger(CopyArchiveFromContainerCmdIT.class);

@Test

public void copyFromContainer() throws Exception {

// TODO extract this into a shared method

CreateContainerResponse container = dockerRule.getClient().createContainerCmd(DEFAULT_IMAGE)

.withName("copyFromContainer")

.withCmd("touch", "/copyFromContainer")

.exec();

LOG.info("Created container: {}", container);

assertThat(container.getId(), not(isEmptyOrNullString()));

dockerRule.getClient().startContainerCmd(container.getId()).exec();

InputStream response = dockerRule.getClient().copyArchiveFromContainerCmd(container.getId(), "/copyFromContainer").exec();

// read the stream fully. Otherwise, the underlying stream will not be closed.

String responseAsString = TestUtils.asString(response);

assertNotNull(responseAsString);

assertTrue(responseAsString.length() > 0);

}

@Test(expected = NotFoundException.class)

public void copyFromNonExistingContainer() throws Exception {

dockerRule.getClient().copyArchiveFromContainerCmd("non-existing", "/test").exec();

}

@Test

public void copyFromContainerBinaryFile() throws Exception {

CreateContainerResponse container = dockerRule.getClient().createContainerCmd(DEFAULT_IMAGE)

.withName("copyFromContainerBinaryFile")

.exec();

LOG.info("Created container: {}", container);

assertThat(container.getId(), not(isEmptyOrNullString()));

Path temp = Files.createTempFile("", ".tar.gz");

Path binaryFile = Paths.get("src/test/resources/testCopyFromArchive/binary.dat");

CompressArchiveUtil.tar(binaryFile, temp, true, false);

try (InputStream uploadStream = Files.newInputStream(temp)) {

dockerRule.getClient().copyArchiveToContainerCmd(container.getId()).withTarInputStream(uploadStream).exec();

}

InputStream response = dockerRule.getClient().copyArchiveFromContainerCmd(container.getId(), "/binary.dat").exec();

try (TarArchiveInputStream tarInputStream = new TarArchiveInputStream(response)) {

TarArchiveEntry nextTarEntry = tarInputStream.getNextTarEntry();

assertEquals(nextTarEntry.getName(), "binary.dat");

try (InputStream binaryFileInputStream = Files.newInputStream(binaryFile, StandardOpenOption.READ)) {

assertTrue(IOUtils.contentEquals(binaryFileInputStream, tarInputStream));

}

assertNull("Nothing except binary.dat is expected to be copied.", tarInputStream.getNextTarEntry());

}

}

}