added OpenAI models servlet and Ollama tags servlet

3 files changed, 196 insertions, 2 deletions

diff --git a/defaults/web.xml b/defaults/web.xml
index 43090a8e1..0e5241e6c 100644
--- a/defaults/web.xml
+++ b/defaults/web.xml
@@ -53,7 +53,17 @@
     <servlet>
         <servlet-name>RAGProxyServlet</servlet-name>
         <servlet-class>net.yacy.http.servlets.RAGProxyServlet</servlet-class>
-    </servlet>    
+    </servlet>
+    
+    <servlet>
+        <servlet-name>OllamaTagsServlet</servlet-name>
+        <servlet-class>net.yacy.http.servlets.OllamaTagsServlet</servlet-class>
+    </servlet>
+    
+    <servlet>
+        <servlet-name>OpenAIModelsServlet</servlet-name>
+        <servlet-class>net.yacy.http.servlets.OpenAIModelsServlet</servlet-class>
+    </servlet>
     
     <servlet>
         <servlet-name>MCPSearchServlet</servlet-name>
@@ -97,7 +107,17 @@
         <servlet-name>RAGProxyServlet</servlet-name>
         <url-pattern>/v1/chat/completions</url-pattern>
     </servlet-mapping>
-    
+
+    <servlet-mapping>
+        <servlet-name>OllamaTagsServlet</servlet-name>
+        <url-pattern>/api/tags</url-pattern>
+    </servlet-mapping>
+
+    <servlet-mapping>
+        <servlet-name>OpenAIModelsServlet</servlet-name>
+        <url-pattern>/v1/models</url-pattern>
+    </servlet-mapping>
+
     <servlet-mapping>
         <servlet-name>MCPSearchServlet</servlet-name>
         <url-pattern>/tools</url-pattern>
diff --git a/source/net/yacy/http/servlets/OllamaTagsServlet.java b/source/net/yacy/http/servlets/OllamaTagsServlet.java
new file mode 100644
index 000000000..85dc190ca
--- /dev/null
+++ b/source/net/yacy/http/servlets/OllamaTagsServlet.java
@@ -0,0 +1,87 @@
+/**
+ *  OllamaTagsServlet
+ *  Copyright 2025 by Michael Peter Christen
+ *  First released 16.11.2025 at https://yacy.net
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program in the file lgpl21.txt
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.yacy.http.servlets;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.solr.servlet.cache.Method;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import net.yacy.ai.LLM;
+
+public class OllamaTagsServlet extends HttpServlet {
+
+    private static final long serialVersionUID = 3411344789759603107L;
+
+    @Override
+    public void service(ServletRequest request, ServletResponse response) throws IOException, ServletException {
+        response.setContentType("application/json;charset=utf-8");
+
+        HttpServletResponse hresponse = (HttpServletResponse) response;
+        HttpServletRequest hrequest = (HttpServletRequest) request;
+
+        // Add CORS headers
+        hresponse.setHeader("Access-Control-Allow-Origin", "*");
+        hresponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
+        hresponse.setHeader("Access-Control-Allow-Headers", "Content-Type, Authorization");
+
+        final Method reqMethod = Method.getMethod(hrequest.getMethod());
+
+        // We expect a POST request
+        if (reqMethod != Method.GET) {
+            hresponse.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
+            return;
+        }
+        
+        ServletOutputStream out = response.getOutputStream();
+        try {
+            JSONObject data = new JSONObject();
+            JSONArray models = new JSONArray();
+            data.put("models", models);
+            
+            // the model names are not the real model names but the usage classes that can be assigned to a model
+            for (LLM.LLMUsage usage: LLM.LLMUsage.values()) {
+                String modelName = usage.name();
+                JSONObject model = new JSONObject();
+                model.put("name", modelName);
+                model.put("model", modelName);
+                models.put(model);
+            }
+        
+            out.println(data.toString());
+            out.flush();
+            hresponse.setStatus(200);
+            out.close(); // close this here to end transmission
+        } catch (JSONException e) {
+            e.printStackTrace();
+        }
+    }
+}
diff --git a/source/net/yacy/http/servlets/OpenAIModelsServlet.java b/source/net/yacy/http/servlets/OpenAIModelsServlet.java
new file mode 100644
index 000000000..c4d9f0f71
--- /dev/null
+++ b/source/net/yacy/http/servlets/OpenAIModelsServlet.java
@@ -0,0 +1,87 @@
+/**
+ *  OpenAIModelsServlet
+ *  Copyright 2025 by Michael Peter Christen
+ *  First released 16.11.2025 at https://yacy.net
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Lesser General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Lesser General Public License
+ *  along with this program in the file lgpl21.txt
+ *  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.yacy.http.servlets;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.apache.solr.servlet.cache.Method;
+import org.json.JSONArray;
+import org.json.JSONException;
+import org.json.JSONObject;
+
+import net.yacy.ai.LLM;
+
+public class OpenAIModelsServlet extends HttpServlet {
+
+    private static final long serialVersionUID = 3411544789739603107L;
+
+    @Override
+    public void service(ServletRequest request, ServletResponse response) throws IOException, ServletException {
+        response.setContentType("application/json;charset=utf-8");
+
+        HttpServletResponse hresponse = (HttpServletResponse) response;
+        HttpServletRequest hrequest = (HttpServletRequest) request;
+
+        // Add CORS headers
+        hresponse.setHeader("Access-Control-Allow-Origin", "*");
+        hresponse.setHeader("Access-Control-Allow-Methods", "POST, GET, OPTIONS, DELETE");
+        hresponse.setHeader("Access-Control-Allow-Headers", "Content-Type, Authorization");
+
+        final Method reqMethod = Method.getMethod(hrequest.getMethod());
+
+        // We expect a POST request
+        if (reqMethod != Method.GET) {
+            hresponse.sendError(HttpServletResponse.SC_METHOD_NOT_ALLOWED);
+            return;
+        }
+        
+        ServletOutputStream out = response.getOutputStream();
+        try {
+            JSONObject data = new JSONObject();
+            JSONArray models = new JSONArray();
+            data.put("data", models);
+            
+            // the model names are not the real model names but the usage classes that can be assigned to a model
+            for (LLM.LLMUsage usage: LLM.LLMUsage.values()) {
+                String modelName = usage.name();
+                JSONObject model = new JSONObject();
+                model.put("id", modelName);
+                model.put("object", "model");
+                models.put(model);
+            }
+        
+            out.println(data.toString());
+            out.flush();
+            hresponse.setStatus(200);
+            out.close(); // close this here to end transmission
+        } catch (JSONException e) {
+            e.printStackTrace();
+        }
+    }
+}