Better hosting

src/javascriptsource/imagehosting/actions/GetID.js

@@ -0,0 +1,24 @@
+// This file was generated by Mendix Studio Pro.
+//
+// WARNING: Only the following code will be retained when actions are regenerated:
+// - the import list
+// - the code between BEGIN USER CODE and END USER CODE
+// - the code between BEGIN EXTRA CODE and END EXTRA CODE
+// Other code you write will be lost the next time you deploy the project.
+import "mx-global";
+import { Big } from "big.js";
+
+// BEGIN EXTRA CODE
+// END EXTRA CODE
+
+/**
+ * Get Object ID of a Mendix Object
+ * @param {MxObject} obj
+ * @returns {Promise.<string>}
+ */
+export async function GetID(obj) {
+	// BEGIN USER CODE
+	const guid = obj.getGuid();
+	return `${guid}`;
+	// END USER CODE
+}

src/javasource/imagehosting/actions/HostImageByID.java

@@ -0,0 +1,168 @@
+// This file was generated by Mendix Studio Pro.
+//
+// WARNING: Only the following code will be retained when actions are regenerated:
+// - the import list
+// - the code between BEGIN USER CODE and END USER CODE
+// - the code between BEGIN EXTRA CODE and END EXTRA CODE
+// Other code you write will be lost the next time you deploy the project.
+// Special characters, e.g., é, ö, à, etc. are supported in comments.
+
+package imagehosting.actions;
+
+import java.io.File;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.URLConnection;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+import java.util.Locale;
+import java.util.TimeZone;
+import com.mendix.core.Core;
+import com.mendix.datastorage.XPathBasicQuery;
+import com.mendix.externalinterface.connector.RequestHandler;
+import com.mendix.m2ee.api.IMxRuntimeRequest;
+import com.mendix.m2ee.api.IMxRuntimeResponse;
+import com.mendix.systemwideinterfaces.core.IContext;
+import com.mendix.systemwideinterfaces.core.IMendixObject;
+import com.mendix.webui.CustomJavaAction;
+
+public class HostImageByID extends CustomJavaAction<java.lang.Boolean>
+{
+	private final java.lang.String RequestHandlerPath;
+	private final java.lang.String SearchEntity;
+
+	public HostImageByID(
+		IContext context,
+		java.lang.String _requestHandlerPath,
+		java.lang.String _searchEntity
+	)
+	{
+		super(context);
+		this.RequestHandlerPath = _requestHandlerPath;
+		this.SearchEntity = _searchEntity;
+	}
+
+	@java.lang.Override
+	public java.lang.Boolean executeAction() throws Exception
+	{
+		// BEGIN USER CODE
+		String path = RequestHandlerPath;
+		if (!path.endsWith("/")) {
+		    path += "/";
+		}
+
+		try {
+			Core.addRequestHandler(path, new requestHandler()); //initialize the request handler
+			Core.getLogger("RequestHandlersByID").info(path + " has been initialized");
+
+			return true;
+		} catch (Exception e) {
+			Core.getLogger("RequestHandlersByID").error(path + " failed to initialize");
+			return false;
+		}
+		// END USER CODE
+	}
+
+	/**
+	 * Returns a string representation of this action
+	 * @return a string representation of this action
+	 */
+	@java.lang.Override
+	public java.lang.String toString()
+	{
+		return "HostImageByID";
+	}
+
+	// BEGIN EXTRA CODE
+	class requestHandler extends RequestHandler {
+		@Override
+		public void processRequest(IMxRuntimeRequest request,
+								   IMxRuntimeResponse response, String arg2) throws Exception
+		{
+
+			String requestPath = request.getHttpServletRequest().getRequestURI();
+			String path = RequestHandlerPath;
+			if (!path.endsWith("/")) {
+			    path += "/";
+			}
+			String fileName = requestPath.replace(path, "");
+			if (fileName.startsWith("/")) {
+				fileName = fileName.substring(1);
+			}
+
+			int extensionIndex = fileName.lastIndexOf(".");
+
+			if (extensionIndex == -1) {
+				Core.getLogger("RequestHandlersByID").error("Not a valid name");
+			    response.setStatus(IMxRuntimeResponse.BAD_REQUEST);
+			    return;
+			}
+
+			String extension = fileName.substring(extensionIndex + 1);
+			fileName = fileName.substring(0, extensionIndex);
+
+			if (!fileName.matches("\\d+")) {
+				Core.getLogger("RequestHandlersByID").error("Not a valid name");
+			    response.setStatus(IMxRuntimeResponse.BAD_REQUEST);
+			    return;
+			}
+
+			File file = new File(fileName + "." + extension);
+			String mimeType = URLConnection.guessContentTypeFromName(file.getName());
+
+			try {
+				Core.getLogger("RequestHandlersByID").debug("Request Param found: " + fileName);
+				Long objectId = Long.parseLong(fileName);
+
+				XPathBasicQuery query = Core
+					.createXPathQuery("//" + SearchEntity + "[id=$value]")
+					.setVariable("value", objectId)
+					.setAmount(1);
+
+                Core.getLogger("Image Hosting").debug(query.toString());
+				java.util.List<IMendixObject> result = query.execute(getContext());
+
+				if (result.size() == 0) {
+					Core.getLogger("RequestHandlersByID").error("Not found: " + file.getName());
+					response.setStatus(IMxRuntimeResponse.NOT_FOUND);
+					return;
+				}
+
+				IMendixObject obj = result.get(0); 
+
+				OutputStream os = response.getOutputStream(); //take the output stream from the IMxRuntimeResponse
+				InputStream is = Core.getFileDocumentContent(getContext(), obj); //get an input stream from your mendix object
+
+				response.setContentType(mimeType);
+				response.addHeader("Content-Disposition", "inline");
+
+				try {
+					SimpleDateFormat dateFormat = new SimpleDateFormat(
+							"EEE, dd MMM yyyy HH:mm:ss z", Locale.US);
+					dateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
+					Date changedDate = obj.getChangedDate(getContext());
+					response.addHeader("Last-Modified", dateFormat.format(changedDate));
+				} catch (Exception _e) {}
+
+                response.setStatus(IMxRuntimeResponse.OK); 
+                is.transferTo(os);
+			} catch (Exception e) {
+                Core.getLogger("RequestHandlersByID").error( e);
+			    response.setStatus(IMxRuntimeResponse.BAD_REQUEST); //if this fails, respond with 200 status anyways
+			}
+		}
+	}
+
+	public static String determineContentType (String fileName) {
+		try {
+			String file_extension = fileName.substring(fileName.lastIndexOf(".") + 1);
+			return file_extension;
+		} catch (Exception e) {
+			Core.getLogger("Image Hosting").error( "failed to determine file extension");
+			return null;
+		}
+
+	}
+
+	// END EXTRA CODE
+}

src/package.xml

@@ -4,8 +4,9 @@
     <module name="ImageHosting" />
     <projectFile path="project.mpr" />
     <files>
-      <file path="javasource/imagehosting/actions/HostImage.java" />
+      <file path="javasource/imagehosting/actions/HostImageByID.java" />
       <file path="javascriptsource/imagehosting/actions/GetOrigin.js" />
+      <file path="javascriptsource/imagehosting/actions/GetID.js" />
       <file path="themesource/imagehosting/settings.json" />
       <file path="themesource/imagehosting/native/design-properties.json" />
       <file path="themesource/imagehosting/native/main.js" />