Ref #27992: add method to get used image

Author: LEDfan

src/main/java/eu/openanalytics/containerproxy/backend/AbstractContainerBackend.java

@@ -69,6 +69,7 @@ public abstract class AbstractContainerBackend implements IContainerBackend {
 	protected static final String PROPERTY_CONTAINER_PROTOCOL = "container-protocol";
 	protected static final String PROPERTY_PRIVILEGED = "privileged";
 
+	private static final String PARAM_CONTAINER_IMAGE = "CONTAINER_IMAGE";
 	protected static final String DEFAULT_TARGET_PROTOCOL = "http";
 	protected final Logger log = LogManager.getLogger(getClass());
 
@@ -141,6 +142,11 @@ public SuccessOrFailure<Proxy> startProxy(Proxy proxy) throws ContainerProxyExce
 
 	}
 
+	@Override
+	public String getContainerImage(Container container) {
+		return (String) container.getParameters().get(PARAM_CONTAINER_IMAGE);
+	}
+
 	protected void doStartProxy(Proxy proxy) throws Exception {
 		for (ContainerSpec spec: proxy.getSpec().getContainerSpecs()) {
 			if (authBackend != null) authBackend.customizeContainer(spec);
@@ -153,6 +159,7 @@ protected void doStartProxy(Proxy proxy) throws Exception {
 
 			Container c = startContainer(eSpec, proxy);
 			c.setSpec(spec);
+			c.getParameters().put(PARAM_CONTAINER_IMAGE, eSpec.getImage());
 
 			proxy.getContainers().add(c);
 		}

src/main/java/eu/openanalytics/containerproxy/backend/IContainerBackend.java

@@ -52,7 +52,7 @@ public interface IContainerBackend {
 	 * @throws ContainerProxyException If the startup fails for any reason.
 	 */
 	public SuccessOrFailure<Proxy> startProxy(Proxy proxy) throws ContainerProxyException;
-	
+
 	/**
 	 * Stop the given proxy. Any resources used by the proxy should be released.
 	 * 
@@ -88,4 +88,6 @@ public interface IContainerBackend {
 	 * @param portBindings The portbindings of this container, as generated by the scanExistingContainers method.
 	 */
 	public void setupPortMappingExistingProxy(Proxy proxy, Container container, Map<Integer, Integer> portBindings) throws Exception;
+
+	public String getContainerImage(Container container);
 }