Merge branch 'feature/docker-data-container'

6 files changed, 222 insertions, 96 deletions

diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/control/table/ContainerBindMountTable.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/control/table/ContainerBindMountTable.java
index 81c76303..28a5225f 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/control/table/ContainerBindMountTable.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/control/table/ContainerBindMountTable.java
@@ -1,6 +1,7 @@
 package org.openslx.dozmod.gui.control.table;
 
 import org.openslx.dozmod.gui.helper.I18n;
+import org.openslx.dozmod.util.ContainerUtils;
 import org.openslx.virtualization.configuration.container.ContainerBindMount;
 
 import java.util.ArrayList;
@@ -11,7 +12,7 @@ public class ContainerBindMountTable extends ListTable<ContainerBindMount> {
 	 * Version for serialization.
 	 */
 	private static final long serialVersionUID = -2908607335582645909L;
-	
+
 	public static final ListTableColumn COL_SOURCE = new ListTableColumn(
 			I18n.CONFIGURATOR.getString("ContainerBindMount.BindMountTable.col.src"));
 	public static final ListTableColumn COL_TARGET = new ListTableColumn(
@@ -27,7 +28,13 @@ public class ContainerBindMountTable extends ListTable<ContainerBindMount> {
 
 	@Override protected Object getValueAtInternal(ContainerBindMount item, ListTableColumn column) {
 		if (COL_SOURCE == column)
-			return item.getSource();
+			switch (item.getMountType()){
+			case DEFAULT:
+				return item.getSource();
+			case CONTAINER_IMAGE:
+				return ContainerUtils.getImageNameByBaseId(item.getSource());
+			}
+
 		if (COL_TARGET == column)
 			return item.getTarget();
 		if (COL_OPTIONS == column)
diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/ContainerBindMountWindow.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/ContainerBindMountWindow.java
index fa3cf920..f4f946e6 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/ContainerBindMountWindow.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/ContainerBindMountWindow.java
@@ -12,6 +12,7 @@ import java.awt.event.ItemEvent;
 import java.awt.event.ItemListener;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Objects;
 
 public class ContainerBindMountWindow extends ContainerBindMountWindowLayout {
 
@@ -38,7 +39,7 @@ public class ContainerBindMountWindow extends ContainerBindMountWindowLayout {
 				dispose();
 			}
 		});
-		this.cboSourceMountPoint.addItemListener(new ItemListener() {
+		this.cboSourceMount.addItemListener(new ItemListener() {
 			@Override public void itemStateChanged(ItemEvent e) {
 				isInputComplete();
 			}
@@ -54,7 +55,8 @@ public class ContainerBindMountWindow extends ContainerBindMountWindowLayout {
 	private boolean isInputComplete() {
 		btnSave.setEnabled(false);
 
-		if (cboSourceMountPoint == null || cboSourceMountPoint.getSelectedIndex() == 0) {
+		if (cboSourceMount == null || Objects.equals(cboSourceMount.getSelectedItem(),
+				ContainerMountChoice.getEmptyChoice())) {
 			header.updateStatus("Source Path is Missing");
 			return false;
 		}
@@ -68,11 +70,14 @@ public class ContainerBindMountWindow extends ContainerBindMountWindowLayout {
 	}
 
 	private void saveEntry() {
-		ContainerBindMount bindMount = new ContainerBindMount();
-		bindMount.setSource(
-				ContainerBindMountWindowLayout.SOURCE_MOUNT_POINTS[cboSourceMountPoint.getSelectedIndex()]);
-		bindMount.setTarget(this.txtBmTarget.getText());
-		bindMount.setOptions(this.txtBmOptions.getText());
+
+		ContainerMountChoice mountChoice = (ContainerMountChoice) this.cboSourceMount.getSelectedItem();
+
+		ContainerBindMount.ContainerMountType mountType = mountChoice.type;
+		String source = mountChoice.value;
+		String target = this.txtBmTarget.getText();
+		String option = this.txtBmOptions.getText();
+		ContainerBindMount bindMount = new ContainerBindMount(mountType, source, target, option);
 
 		List<ContainerBindMount> oldData = bindMountTable.getData();
 		List<ContainerBindMount> data = new ArrayList<>(oldData);
diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/layout/ContainerBindMountWindowLayout.java b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/layout/ContainerBindMountWindowLayout.java
index 6f6a3cfe..3b542a10 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/layout/ContainerBindMountWindowLayout.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/gui/window/layout/ContainerBindMountWindowLayout.java
@@ -1,13 +1,18 @@
 package org.openslx.dozmod.gui.window.layout;
 
+import org.openslx.bwlp.thrift.iface.ImageSummaryRead;
 import org.openslx.dozmod.gui.Gui;
 import org.openslx.dozmod.gui.control.ComboBox;
 import org.openslx.dozmod.gui.control.QLabel;
 import org.openslx.dozmod.gui.helper.GridManager;
 import org.openslx.dozmod.gui.helper.StatusHeader;
+import org.openslx.dozmod.util.ContainerUtils;
+import org.openslx.virtualization.configuration.container.ContainerBindMount;
 
 import javax.swing.*;
 import java.awt.*;
+import java.util.ArrayList;
+import java.util.List;
 
 public class ContainerBindMountWindowLayout extends JDialog {
 
@@ -19,8 +24,7 @@ public class ContainerBindMountWindowLayout extends JDialog {
 	private static final String title = "Add Bind Mount";
 
 	protected final StatusHeader header;
-	protected final QLabel lblBmSource;
-	protected final JTextField txtBmSource;
+	//	protected final QLabel lblBmSource;
 	protected final QLabel lblBmTarget;
 	protected final JTextField txtBmTarget;
 	protected final QLabel lblBmOptions;
@@ -33,14 +37,14 @@ public class ContainerBindMountWindowLayout extends JDialog {
 	protected static String[] SOURCE_MOUNT_POINTS = { EMPTY_MARKER, TAGS[0], TAGS[1], "D", "E", "F", "G", "H",
 			"I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };
 
-	protected final ComboBox<String> cboSourceMountPoint = new ComboBox<String>(
-			new ComboBox.ComboBoxRenderer<String>() {
-				@Override public String renderItem(String letter) {
-					if (letter == null)
-						return null;
-					return letter;
+	protected final ComboBox<ContainerMountChoice> cboSourceMount = new ComboBox<>(
+			new ComboBox.ComboBoxRenderer<ContainerMountChoice>() {
+				@Override public String renderItem(ContainerMountChoice choice) {
+					if (choice == null)
+						return "";
+					return choice.name;
 				}
-			}, String.class);
+			}, ContainerMountChoice.class);
 
 	public ContainerBindMountWindowLayout(Window modalParent) {
 		super(modalParent, title, ModalityType.APPLICATION_MODAL);
@@ -53,16 +57,17 @@ public class ContainerBindMountWindowLayout extends JDialog {
 		add(contentPanel, BorderLayout.CENTER);
 		GridManager grid = new GridManager(contentPanel, 2, true, new Insets(2, 2, 2, 2));
 
-		lblBmSource = new QLabel("Source");
-
-		txtBmSource = new JTextField();
-		cboSourceMountPoint.setModel(new DefaultComboBoxModel<>(SOURCE_MOUNT_POINTS));
-		cboSourceMountPoint.setSelectedItem(SOURCE_MOUNT_POINTS[0]);
-
-		grid.add(lblBmSource);
-		grid.add(cboSourceMountPoint).fill(true, false).expand(true, false);
+		cboSourceMount.setModel(
+				new DefaultComboBoxModel<>(generateMountChoices().toArray(new ContainerMountChoice[0])));
+		cboSourceMount.setSelectedIndex(0);
+		grid.add(new QLabel("Source"));
+		grid.add(cboSourceMount).fill(true, false).expand(true, false);
 		grid.nextRow();
 
+		//		grid.add(lblBmSource);
+		//		grid.add(cboSourceMountPoint).fill(true, false).expand(true, false);
+		//		grid.nextRow();
+
 		lblBmTarget = new QLabel("Target");
 		txtBmTarget = new JTextField();
 		grid.add(lblBmTarget);
@@ -87,10 +92,49 @@ public class ContainerBindMountWindowLayout extends JDialog {
 		grid.add(buttonPane, 2).fill(true, false).expand(true, false);
 		grid.finish(false);
 
-		setSize(350, 200);
+		setSize(350, 300);
 		setResizable(false);
 		if (modalParent != null) {
 			Gui.centerShellOverShell(modalParent, this);
 		}
 	}
+
+	private ArrayList<ContainerMountChoice> generateMountChoices() {
+		List<ImageSummaryRead> dataContainerImages = ContainerUtils.getDataContainerImages();
+		ArrayList<ContainerMountChoice> mountChoices = new ArrayList<>();
+		mountChoices.add(ContainerMountChoice.getEmptyChoice());
+
+		for (int i = 1; i < SOURCE_MOUNT_POINTS.length; i++) {
+			mountChoices.add(new ContainerMountChoice(ContainerBindMount.ContainerMountType.DEFAULT,
+					SOURCE_MOUNT_POINTS[i], SOURCE_MOUNT_POINTS[i]));
+		}
+
+		for (ImageSummaryRead image : dataContainerImages) {
+			mountChoices.add(new ContainerMountChoice(ContainerBindMount.ContainerMountType.CONTAINER_IMAGE,
+					image.imageName, image.imageBaseId));
+		}
+		return mountChoices;
+	}
+
+	protected static class ContainerMountChoice {
+
+		public final ContainerBindMount.ContainerMountType type;
+		public final String name;
+		public final String value;
+
+		private static ContainerMountChoice emptyMountChoice = null;
+
+		public ContainerMountChoice(ContainerBindMount.ContainerMountType type, String name, String value) {
+			this.type = type;
+			this.name = name;
+			this.value = value;
+		}
+
+		public static ContainerMountChoice getEmptyChoice() {
+			if (emptyMountChoice == null)
+				emptyMountChoice = new ContainerMountChoice(ContainerBindMount.ContainerMountType.DEFAULT,
+						"-", "-");
+			return emptyMountChoice;
+		}
+	}
 }
diff --git a/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java b/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
index 3d65ea5d..87f87131 100644
--- a/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
+++ b/dozentenmodul/src/main/java/org/openslx/dozmod/util/ContainerUtils.java
@@ -14,10 +14,13 @@ import org.openslx.dozmod.gui.helper.GridManager;
 import org.openslx.dozmod.gui.helper.I18n;
 import org.openslx.dozmod.gui.helper.MessageType;
 import org.openslx.dozmod.model.ContainerDefinition;
+import org.openslx.dozmod.thrift.Session;
+import org.openslx.dozmod.thrift.cache.ImageCache;
 import org.openslx.dozmod.thrift.cache.LectureCache;
 import org.openslx.thrifthelper.TConst;
 import org.openslx.thrifthelper.ThriftManager;
 import org.openslx.util.ThriftUtil;
+import org.openslx.virtualization.configuration.container.ContainerMeta;
 
 import javax.swing.*;
 import java.awt.*;
@@ -25,6 +28,7 @@ import java.io.*;
 import java.nio.ByteBuffer;
 import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
+import java.util.ArrayList;
 import java.util.List;
 
 /**
@@ -33,8 +37,10 @@ import java.util.List;
 public class ContainerUtils {
 
 	private static final Logger LOGGER = Logger.getLogger(ContainerUtils.class);
+
 	/**
-	 * Checks ImageBaseId of image if already linked with existing Lectures in LectureCache.
+	 * Checks ImageBaseId of image if already linked with existing Lectures in
+	 * LectureCache.
 	 *
 	 * @param image The image to check.
 	 * @return true if the images imageBaseId is already linked with a lecture.
@@ -43,7 +49,8 @@ public class ContainerUtils {
 		if (image != null && image.getVirtId().equals(TConst.VIRT_DOCKER)) {
 			List<LectureSummary> lectureSummaries = LectureCache.get(true);
 			for (LectureSummary lecture : lectureSummaries) {
-				// lecture.imageBaseId is null when no image linked to it -> NullPointer on equals
+				// lecture.imageBaseId is null when no image linked to it -> NullPointer on
+				// equals
 				if (image.imageBaseId.equals(lecture.imageBaseId)) {
 					return true;
 				}
@@ -52,6 +59,30 @@ public class ContainerUtils {
 		return false;
 	}
 
+	public static List<ImageSummaryRead> getDataContainerImages() {
+		String satelliteToken = Session.getSatelliteToken();
+		List<ImageSummaryRead> images = ImageCache.get(true);
+		List<ImageSummaryRead> dataContainerImages = new ArrayList<>();
+		for (ImageSummaryRead image : images) {
+			if (image.getVirtId().equals(TConst.VIRT_DOCKER)) {
+				try {
+					byte[] rawVirtConfig;
+					ByteBuffer byteBuffer = ThriftManager.getSatClient().getImageVersionVirtConfig(satelliteToken,
+							image.getLatestVersionId());
+					rawVirtConfig = ThriftUtil.unwrapByteBuffer(byteBuffer);
+					ContainerDefinition containerDefinition = ContainerDefinition.fromByteArray(rawVirtConfig);
+					if (containerDefinition.getContainerMeta().getImageType() == ContainerMeta.ContainerImageType.DATA)
+						dataContainerImages.add(image);
+
+				} catch (TException e) {
+					// LOGGER.error("Failed to retrieve virtualizer config for image version " + "'"
+					// + image.getLatestVersionId() + ", see trace: ", e);
+				}
+			}
+		}
+		return dataContainerImages;
+	}
+
 	public static void showWarning(Component c, Logger logger) {
 		Gui.showMessageBox(c, I18n.WINDOW.getString("LectureDetails.Message.error.containerLinkedWithLecture"),
 				MessageType.WARNING, logger, null);
@@ -60,21 +91,21 @@ public class ContainerUtils {
 	public static ContainerDefinition getContainerDefinition(String satelliteToken, String latestVersionId) {
 		byte[] rawVirtConfig = null;
 		try {
-			ByteBuffer byteBuffer = ThriftManager.getSatClient()
-					.getImageVersionVirtConfig(satelliteToken, latestVersionId);
+			ByteBuffer byteBuffer = ThriftManager.getSatClient().getImageVersionVirtConfig(satelliteToken,
+					latestVersionId);
 			rawVirtConfig = ThriftUtil.unwrapByteBuffer(byteBuffer);
 		} catch (TException e) {
-			LOGGER.error("Failed to retrieve virtualizer config for image version " + "'"
-					+ latestVersionId + ", see trace: ", e);
+			LOGGER.error("Failed to retrieve virtualizer config for image version " + "'" + latestVersionId
+					+ ", see trace: ", e);
 			return null;
 		}
 		return ContainerDefinition.fromByteArray(rawVirtConfig);
 	}
 
 	/**
-	 * Check if a provided tar file contains information about a single docker image.
-	 * To check the validity of the file, the existence of two JSON files is checked
-	 * and one of the files must only contain information for one image.
+	 * Check if a provided tar file contains information about a single docker
+	 * image. To check the validity of the file, the existence of two JSON files is
+	 * checked and one of the files must only contain information for one image.
 	 *
 	 * The tar file have to be created by the 'docker save ...' command.
 	 *
@@ -98,7 +129,7 @@ public class ContainerUtils {
 			// because we want only to check manifest.json and repositories file
 			tis.setDefaultSkip(true);
 			while ((entry = tis.getNextEntry()) != null) {
-				if(!TarHeader.USTAR_MAGIC.equals(entry.getHeader().magic.toString()))
+				if (!TarHeader.USTAR_MAGIC.equals(entry.getHeader().magic.toString()))
 					break;
 				Arrays.fill(rawData, (byte) 0);
 				output.reset();
@@ -109,8 +140,8 @@ public class ContainerUtils {
 					while ((count = tis.read(rawData)) != -1) {
 						output.write(rawData, 0, count);
 					}
-					manifestJson = new JsonParser().parse(
-							new String(output.toByteArray(), StandardCharsets.UTF_8)).getAsJsonArray();
+					manifestJson = new JsonParser().parse(new String(output.toByteArray(), StandardCharsets.UTF_8))
+							.getAsJsonArray();
 				}
 
 				if (entry.getName().equals("repositories")) {
@@ -123,20 +154,15 @@ public class ContainerUtils {
 			}
 			tis.close();
 			// check the json files inside the tar file
-			if (containsManifest && containsRepositories && manifestJson.isJsonArray()
-					&& manifestJson.size() == 1) {
+			if (containsManifest && containsRepositories && manifestJson.isJsonArray() && manifestJson.size() == 1) {
 				isValid = true;
 				String repoTag = manifestJson.get(0).getAsJsonObject().get("RepoTags").getAsString();
 				LOGGER.info(String.format("Tar File contains Docker Image with repoTag=%s", repoTag));
 			} else if (containsManifest && containsRepositories && manifestJson.isJsonArray()
 					&& manifestJson.size() > 1) {
-				Gui.showMessageBox("Tar File container more then one Images!", MessageType.ERROR,
-						LOGGER,
-						null);
+				Gui.showMessageBox("Tar File container more then one Images!", MessageType.ERROR, LOGGER, null);
 			} else {
-				Gui.showMessageBox("No valid Tar File with Images provided!", MessageType.ERROR,
-						LOGGER,
-						null);
+				Gui.showMessageBox("No valid Tar File with Images provided!", MessageType.ERROR, LOGGER, null);
 			}
 
 		} catch (IOException e) {
@@ -150,23 +176,30 @@ public class ContainerUtils {
 		GridManager grid = new GridManager(pnlUserInfo, 1, true);
 
 		JTextArea txtInfoText = new JTextArea();
-		txtInfoText.setBorder(BorderFactory.createTitledBorder(
-				I18n.PAGE_LAYOUT.getString("Info")));
+		txtInfoText.setBorder(BorderFactory.createTitledBorder(I18n.PAGE_LAYOUT.getString("Info")));
 		txtInfoText.setLineWrap(true);
 		txtInfoText.setWrapStyleWord(true);
 		txtInfoText.setEditable(false);
 		txtInfoText.setFocusable(false);
 		txtInfoText.setOpaque(false);
 		txtInfoText.setText(infoText);
-		grid.add(txtInfoText).fill(true,true);
+		grid.add(txtInfoText).fill(true, true);
 		grid.nextRow();
 
 		JTextField txtUserInfo = new JTextField();
 		txtUserInfo.setText(imageRepo);
-		grid.add(txtUserInfo).fill(true,true);
+		grid.add(txtUserInfo).fill(true, true);
 		grid.finish(true);
 
 		return pnlUserInfo;
 	}
 
+	public static String getImageNameByBaseId(String imageBaseId) {
+		List<ImageSummaryRead> images = ImageCache.get(true);
+		for (ImageSummaryRead image : images) {
+			if (image.imageBaseId.equals(imageBaseId))
+				return image.getImageName();
+		}
+		return imageBaseId;
+	}
 }
diff --git a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbImage.java b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbImage.java
index bac3ad6c..9c39078c 100644
--- a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbImage.java
+++ b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/database/mappers/DbImage.java
@@ -1,14 +1,6 @@
 package org.openslx.bwlp.sat.database.mappers;
 
-import java.io.*;
-import java.sql.ResultSet;
-import java.sql.SQLException;
-import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Set;
-import java.util.UUID;
-
+import com.google.gson.JsonObject;
 import org.apache.log4j.Logger;
 import org.openslx.bwlp.sat.RuntimeConfig;
 import org.openslx.bwlp.sat.database.Database;
@@ -20,27 +12,20 @@ import org.openslx.bwlp.sat.database.models.LocalImageVersion;
 import org.openslx.bwlp.sat.mail.MailGenerator;
 import org.openslx.bwlp.sat.permissions.User;
 import org.openslx.bwlp.sat.util.FileSystem;
-import org.openslx.bwlp.thrift.iface.ImageBaseWrite;
-import org.openslx.bwlp.thrift.iface.ImageDetailsRead;
-import org.openslx.bwlp.thrift.iface.ImagePermissions;
-import org.openslx.bwlp.thrift.iface.ImagePublishData;
-import org.openslx.bwlp.thrift.iface.ImageSummaryRead;
-import org.openslx.bwlp.thrift.iface.ImageVersionDetails;
-import org.openslx.bwlp.thrift.iface.ImageVersionWrite;
-import org.openslx.bwlp.thrift.iface.Role;
-import org.openslx.bwlp.thrift.iface.ShareMode;
-import org.openslx.bwlp.thrift.iface.TNotFoundException;
-import org.openslx.bwlp.thrift.iface.UserInfo;
+import org.openslx.bwlp.thrift.iface.*;
 import org.openslx.filetransfer.util.ChunkList;
 import org.openslx.filetransfer.util.FileChunk;
 import org.openslx.util.QuickTimer;
 import org.openslx.util.QuickTimer.Task;
 import org.openslx.util.Util;
-
-// master-sync-shared
 import org.openslx.virtualization.configuration.container.ContainerDefinition;
 import org.openslx.virtualization.configuration.container.ContainerMeta;
 
+import java.io.File;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.*;
+
 public class DbImage {
 
 	private static final Logger LOGGER = Logger.getLogger(DbImage.class);
@@ -1162,6 +1147,44 @@ public class DbImage {
 		}
 	}
 
+	public static String getContainerImageMetadata(String imagebaseid) throws SQLException {
+
+		try (MysqlConnection connection = Database.getConnection()) {
+			MysqlStatement stmt = connection.prepareStatement(
+					"SELECT ib.imagebaseid, ib.displayname, iv.filepath, iv.filesize, iv.virtualizerconfig"
+							+ " FROM imagebase AS ib"
+							+ " JOIN imageversion AS iv ON (ib.latestversionid=iv.imageversionid AND ib.virtid = 'docker' AND ib.latestversionid IS NOT NULL)"
+							+ " WHERE ib.imagebaseid = :imagebaseid");
+			stmt.setString("imagebaseid", imagebaseid);
+			ResultSet rs = stmt.executeQuery();
+
+			JsonObject resultJson = new JsonObject();
+			while (rs.next()) {
+				ContainerDefinition condev = ContainerDefinition.fromByteArray(
+						rs.getBytes("iv.virtualizerconfig"));
+				// currently only data images are returned
+				if (condev.getContainerMeta().getImageType() != ContainerMeta.ContainerImageType.DATA)
+					break;
+
+				resultJson.addProperty("displayname", rs.getString("ib.displayname"));
+				resultJson.addProperty("imagepath", rs.getString("iv.filepath"));
+				resultJson.addProperty("filesize", rs.getString("iv.filesize"));
+
+				resultJson.addProperty("image_recipe", condev.getContainerRecipe());
+				resultJson.addProperty("image_repo", condev.getContainerMeta().getImageRepo());
+				resultJson.addProperty("build_context_method",
+						condev.getContainerMeta().getContainerImageContext());
+				resultJson.addProperty("build_context_url", condev.getContainerMeta().getBuildContextUrl());
+				break;
+			}
+
+			return resultJson.toString();
+		} catch (Exception e) {
+			LOGGER.error("Query failed in DbImage.getContainerImages()", e);
+			throw e;
+		}
+	}
+
 	static class ContainerImages {
 		public final String owner_firstname;
 		public final String owner_lastname;
diff --git a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/web/WebServer.java b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/web/WebServer.java
index a3d9d293..43e56137 100644
--- a/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/web/WebServer.java
+++ b/dozentenmodulserver/src/main/java/org/openslx/bwlp/sat/web/WebServer.java
@@ -41,9 +41,9 @@ import fi.iki.elonen.NanoHTTPD;
 public class WebServer extends NanoHTTPD {
 
 	private static final Logger LOGGER = Logger.getLogger(WebServer.class);
-	
-	private static final ThreadPoolExecutor tpe = 
-			new GrowingThreadPoolExecutor(1, 8, 1, TimeUnit.MINUTES, new LinkedBlockingQueue<Runnable>(16));
+
+	private static final ThreadPoolExecutor tpe = new GrowingThreadPoolExecutor(1, 8, 1, TimeUnit.MINUTES,
+			new LinkedBlockingQueue<Runnable>(16));
 
 	private static final Serializer serializer = new Persister();
 
@@ -93,12 +93,20 @@ public class WebServer extends NanoHTTPD {
 					return serveMetaData(parts[2]);
 				if (parts[3].equals("netrules"))
 					return serveLectureNetRules(parts[2]);
+				if (parts[3].equals("imagemeta"))
+					return serveContainerImageMetaData(parts[2]);
 			}
 			return notFound();
 		}
 		if (uri.startsWith("/bwlp/container/clusterimages")) {
 			return serverContainerImages();
 		}
+		if (uri.startsWith("/image/container/")) {
+			if (parts.length < 4)
+				return badRequest("Bad Request");
+			if (parts[3].equals("metadata"))
+				return serveContainerImageMetaData(parts[2]);
+		}
 
 		if (uri.startsWith("/status/fileserver")) {
 			return serveStatus();
@@ -120,16 +128,14 @@ public class WebServer extends NanoHTTPD {
 		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "application/json; charset=utf-8",
 				Json.serialize(FileServer.instance().getStatus()));
 	}
-	
-	private static void tarPutFile(TarOutputStream output, String fileName, String data) throws IOException
-	{
+
+	private static void tarPutFile(TarOutputStream output, String fileName, String data) throws IOException {
 		if (data == null)
 			return;
 		tarPutFile(output, fileName, data.getBytes(StandardCharsets.UTF_8));
 	}
-	
-	private static void tarPutFile(TarOutputStream output, String fileName, byte[] data) throws IOException
-	{
+
+	private static void tarPutFile(TarOutputStream output, String fileName, byte[] data) throws IOException {
 		if (data == null)
 			return;
 		output.putNextEntry(new TarEntry(TarHeader.createHeader(fileName, data.length, Util.unixTime(), false, 0644)));
@@ -166,8 +172,7 @@ public class WebServer extends NanoHTTPD {
 						if (ld.runScript != null) {
 							int cnt = 0;
 							for (RunScript rs : ld.runScript) {
-								tarPutFile(output, String.format("adminrun/%04d-%d-%d.%s",
-										cnt++, rs.visibility,
+								tarPutFile(output, String.format("adminrun/%04d-%d-%d.%s", cnt++, rs.visibility,
 										rs.passCreds ? 1 : 0, rs.extension), rs.content);
 							}
 						}
@@ -185,10 +190,9 @@ public class WebServer extends NanoHTTPD {
 			LOGGER.warn("Server overloaded; rejecting VM Metadata request", e2);
 			return internalServerError();
 		}
-		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "application/gzip",
-				sink);
+		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "application/gzip", sink);
 	}
-	
+
 	private Response serveLectureNetRules(String lectureId) {
 		List<NetRule> list = new ArrayList<>();
 		boolean defaultAllowed;
@@ -217,13 +221,12 @@ public class WebServer extends NanoHTTPD {
 			sb.append("IN * 0 REJECT\n");
 			sb.append("OUT * 0 REJECT\n");
 		}
-		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "text/plain; charset=utf-8",
-				sb.toString());
+		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.OK, "text/plain; charset=utf-8", sb.toString());
 	}
 
 	private String serializeNetShares(List<NetShare> list) {
 		// openslx.exe expects shares in the following format
-		//	<path> <letter> <shortcut> <username> <password>
+		// <path> <letter> <shortcut> <username> <password>
 		// letter is either a drive letter for Windows VMs,
 		// or a mount point for Linux VMs.
 		StringBuilder sb = new StringBuilder();
@@ -270,13 +273,13 @@ public class WebServer extends NanoHTTPD {
 
 	/**
 	 * Helper for returning "Internal Server Error" Status
-	 * @param body Message 
+	 * 
+	 * @param body Message
 	 */
 	public static Response internalServerError(String body) {
-		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.INTERNAL_ERROR, "text/plain",
-				body);
+		return new NanoHTTPD.Response(NanoHTTPD.Response.Status.INTERNAL_ERROR, "text/plain", body);
 	}
-	
+
 	public static Response internalServerError() {
 		return internalServerError("Internal Server Error");
 	}
@@ -299,9 +302,10 @@ public class WebServer extends NanoHTTPD {
 	}
 
 	/**
-	 * create a json response with information about existing container images in bwlehrpool
+	 * create a json response with information about existing container images in
+	 * bwlehrpool
 	 */
-	private Response serverContainerImages () {
+	private Response serverContainerImages() {
 		try {
 			return new Response(Response.Status.OK, "application/json; charset=utf-8",
 					Json.serialize(DbImage.getContainerImageCluster()));
@@ -310,4 +314,14 @@ public class WebServer extends NanoHTTPD {
 			return internalServerError();
 		}
 	}
+
+	private Response serveContainerImageMetaData(String imageBaseId) {
+		try {
+			return new Response(Response.Status.OK, "application/json; charset=utf-8",
+					DbImage.getContainerImageMetadata(imageBaseId));
+		} catch (SQLException e) {
+			LOGGER.error("error -- could not server container image", e);
+			return internalServerError();
+		}
+	}
 }