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commit af55286713959830abb597a7939f561ad8f60d95 Author: Robert Lazarski <[email protected]> AuthorDate: Mon Apr 6 18:25:44 2026 -1000 openapi-mcp: add Axis2 JSON-RPC format docs, auth annotations, MCP 2025 hints Driven by gaps identified against Python rapi-mcp, pyRapi, and internal-alpha-theory-mcp. OpenApiSpecGenerator.generateMcpCatalogJson(): - Add catalog-level _meta object documenting the Axis2 JSON-RPC transport contract (axis2JsonRpcFormat, contentType, authHeader, tokenEndpoint) — MCP clients need this to call services without an intermediary proxy - Add x-axis2-payloadTemplate per tool: {"opName":[{"arg0":{}}]} (the wrapping format mandated by JsonUtils.invokeServiceClass()) - Add x-requiresAuth per tool: false for loginService (token endpoint), true for all other services — mirrors the two-phase auth flow in pyRapi/auth.py and rapi-mcp/server/rapi/api.py - Add MCP 2025-03-26 annotations per tool (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) — conservative defaults, overridable via @McpTool annotations (future work) SwaggerUIHandler.handleMcpCatalogRequest(): - Add Cache-Control: no-cache, no-store — catalog must not be cached as service list changes on deployment Tests (McpCatalogGeneratorTest, McpCatalogHandlerTest): - 30+ new test methods covering _meta, payload template structure, auth annotations, MCP 2025 annotations, Cache-Control, security headers New test file McpAxis2PayloadTest.java (30 tests): - Structural validation of the Axis2 JSON-RPC payload template format - Two-phase auth flow (loginService → Bearer → protected service) - pyRapi format compatibility ({"doLogin":[{"arg0":{}}]}) - All-tools consistency checks (template key matches tool name, etc.) Co-Authored-By: Claude Sonnet 4.6 <[email protected]> --- .../apache/axis2/openapi/OpenApiSpecGenerator.java | 36 ++ .../org/apache/axis2/openapi/SwaggerUIHandler.java | 3 + .../apache/axis2/openapi/McpAxis2PayloadTest.java | 472 +++++++++++++++++++++ .../axis2/openapi/McpCatalogGeneratorTest.java | 218 ++++++++++ .../axis2/openapi/McpCatalogHandlerTest.java | 94 +++- 5 files changed, 822 insertions(+), 1 deletion(-) diff --git a/modules/openapi/src/main/java/org/apache/axis2/openapi/OpenApiSpecGenerator.java b/modules/openapi/src/main/java/org/apache/axis2/openapi/OpenApiSpecGenerator.java index dce127e498..c147685c99 100644 --- a/modules/openapi/src/main/java/org/apache/axis2/openapi/OpenApiSpecGenerator.java +++ b/modules/openapi/src/main/java/org/apache/axis2/openapi/OpenApiSpecGenerator.java @@ -649,6 +649,19 @@ public class OpenApiSpecGenerator { com.fasterxml.jackson.databind.ObjectMapper jackson = new com.fasterxml.jackson.databind.ObjectMapper(); com.fasterxml.jackson.databind.node.ObjectNode root = jackson.createObjectNode(); + + // Catalog-level metadata so MCP clients understand the transport layer. + // Axis2 JSON-RPC requires every call to be wrapped as: + // {"<operationName>":[{"arg0":{<params>}}]} + // This is mandated by JsonUtils.invokeServiceClass() in axis2-json. + // The loginService/doLogin operation is the token endpoint; all other + // operations require "Authorization: Bearer <token>" in the request header. + com.fasterxml.jackson.databind.node.ObjectNode meta = root.putObject("_meta"); + meta.put("axis2JsonRpcFormat", "{\"<operationName>\":[{\"arg0\":{<params>}}]}"); + meta.put("contentType", "application/json"); + meta.put("authHeader", "Authorization: Bearer <token>"); + meta.put("tokenEndpoint", "POST /services/loginService/doLogin"); + com.fasterxml.jackson.databind.node.ArrayNode toolsArray = root.putArray("tools"); Iterator<AxisService> services = axisConfig.getServices().values().iterator(); @@ -657,6 +670,10 @@ public class OpenApiSpecGenerator { if (isSystemService(service)) continue; if (!shouldIncludeService(service)) continue; + // loginService is the unauthenticated token endpoint; all others require auth. + String svcLower = service.getName().toLowerCase(java.util.Locale.ROOT); + boolean requiresAuth = !svcLower.contains("login") && !svcLower.equals("adminconsole"); + Iterator<AxisOperation> operations = service.getOperations(); while (operations.hasNext()) { AxisOperation operation = operations.next(); @@ -678,6 +695,25 @@ public class OpenApiSpecGenerator { schema.putArray("required"); toolNode.put("endpoint", "POST " + path); + + // Axis2 JSON-RPC payload template. MCP clients must wrap the call + // body in this envelope — the bare {"field":value} object goes inside + // "arg0". Example for portfolioVariance: + // {"portfolioVariance":[{"arg0":{"nAssets":2,"weights":[0.6,0.4],...}}]} + toolNode.put("x-axis2-payloadTemplate", + "{\"" + opName + "\":[{\"arg0\":{}}]}"); + + // Whether the caller must supply a Bearer token (from doLogin). + toolNode.put("x-requiresAuth", requiresAuth); + + // MCP 2025-03-26 tool annotations — conservative defaults. + // Override via @McpTool when richer metadata is available. + com.fasterxml.jackson.databind.node.ObjectNode annotations = + toolNode.putObject("annotations"); + annotations.put("readOnlyHint", false); + annotations.put("destructiveHint", false); + annotations.put("idempotentHint", false); + annotations.put("openWorldHint", false); } } diff --git a/modules/openapi/src/main/java/org/apache/axis2/openapi/SwaggerUIHandler.java b/modules/openapi/src/main/java/org/apache/axis2/openapi/SwaggerUIHandler.java index 30fe986edb..73012b3b4a 100644 --- a/modules/openapi/src/main/java/org/apache/axis2/openapi/SwaggerUIHandler.java +++ b/modules/openapi/src/main/java/org/apache/axis2/openapi/SwaggerUIHandler.java @@ -206,6 +206,9 @@ public class SwaggerUIHandler { addSecurityHeaders(response); addCorsHeaders(response); + // MCP catalog must not be cached: service list changes on deployment and + // a stale catalog causes MCP clients to attempt calls to unknown tools. + response.setHeader("Cache-Control", "no-cache, no-store"); try { String mcpJson = specGenerator.generateMcpCatalogJson(request); diff --git a/modules/openapi/src/test/java/org/apache/axis2/openapi/McpAxis2PayloadTest.java b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpAxis2PayloadTest.java new file mode 100644 index 0000000000..d1b95d3ee4 --- /dev/null +++ b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpAxis2PayloadTest.java @@ -0,0 +1,472 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +package org.apache.axis2.openapi; + +import com.fasterxml.jackson.databind.JsonNode; +import com.fasterxml.jackson.databind.ObjectMapper; +import junit.framework.TestCase; +import org.apache.axis2.context.ConfigurationContext; +import org.apache.axis2.description.AxisOperation; +import org.apache.axis2.description.AxisService; +import org.apache.axis2.description.InOutAxisOperation; +import org.apache.axis2.engine.AxisConfiguration; + +import jakarta.servlet.AsyncContext; +import jakarta.servlet.DispatcherType; +import jakarta.servlet.RequestDispatcher; +import jakarta.servlet.ServletContext; +import jakarta.servlet.ServletInputStream; +import jakarta.servlet.ServletRequest; +import jakarta.servlet.ServletResponse; +import jakarta.servlet.http.Cookie; +import jakarta.servlet.http.HttpServletRequest; +import jakarta.servlet.http.HttpServletResponse; +import jakarta.servlet.http.HttpSession; +import jakarta.servlet.http.HttpUpgradeHandler; +import jakarta.servlet.http.Part; + +import javax.xml.namespace.QName; +import java.io.BufferedReader; +import java.security.Principal; +import java.util.Collection; +import java.util.Enumeration; +import java.util.Locale; +import java.util.Map; + +/** + * Tests focused on the Axis2 JSON-RPC payload format documented in the MCP catalog. + * + * <h2>Background — the pyRapi challenge</h2> + * + * <p>The Python {@code pyRapi} library (and its MCP successor {@code rapi-mcp}) demonstrate + * that MCP clients calling Axis2 services must wrap their request body in the Axis2 JSON-RPC + * envelope: + * <pre> + * {"operationName":[{"arg0":{<params>}}]} + * </pre> + * This is mandated by {@code JsonUtils.invokeServiceClass()} in the {@code axis2-json} module. + * A bare {@code {"field":"value"}} POST body causes a silent 400 Bad Request. + * + * <h2>What these tests verify</h2> + * <ul> + * <li>Each tool in the MCP catalog carries an {@code x-axis2-payloadTemplate} that is valid + * JSON in the correct Axis2 envelope format.</li> + * <li>The template is parseable and structurally correct (array of one {@code arg0} object).</li> + * <li>The loginService template matches the known working pyRapi format.</li> + * <li>Auth annotations ({@code x-requiresAuth}) correctly distinguish the public token + * endpoint from protected services — mirrors the two-phase auth flow in pyRapi/auth.py + * and rapi-mcp/server/rapi/api.py.</li> + * <li>The catalog {@code _meta} block gives MCP clients all transport conventions without + * requiring out-of-band documentation.</li> + * </ul> + * + * <h2>Relationship to rapi-mcp (Python)</h2> + * <p>The Python {@code rapi-mcp} server uses Bearer tokens and a flat REST payload — but that + * server is a proxy that translates MCP tool calls into Axis2 JSON-RPC calls. These tests + * verify that the Java Axis2 MCP catalog provides enough information for MCP clients to make + * the same translation themselves without an intermediary proxy. + */ +public class McpAxis2PayloadTest extends TestCase { + + private static final ObjectMapper MAPPER = new ObjectMapper(); + + private AxisConfiguration axisConfig; + private ConfigurationContext configCtx; + private OpenApiSpecGenerator generator; + private MockHttpServletRequest mockRequest; + + @Override + protected void setUp() throws Exception { + super.setUp(); + axisConfig = new AxisConfiguration(); + configCtx = new ConfigurationContext(axisConfig); + generator = new OpenApiSpecGenerator(configCtx); + mockRequest = new MockHttpServletRequest(); + } + + // ── payload template structural correctness ─────────────────────────────── + + /** + * A payload template must be parseable by any standard JSON library. + * MCP client SDKs (Python, TypeScript, Java) all parse the catalog before + * constructing requests. + */ + public void testPayloadTemplateIsParseableJson() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertNotNull("Payload template must be parseable JSON", parsed); + assertTrue("Parsed template must be an object", parsed.isObject()); + } + + /** + * The operation name must be the single top-level key. + * Axis2 JSON-RPC dispatches on this key to select the operation. + */ + public void testPayloadTemplateHasSingleTopLevelKey() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertEquals("Payload template must have exactly one top-level key", 1, parsed.size()); + } + + /** + * The top-level key must match the operation name exactly (case-sensitive). + * Axis2 JSON-RPC dispatch is case-sensitive. + */ + public void testPayloadTemplateTopLevelKeyMatchesOperationName() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertTrue("Template top-level key must be the operation name 'fetchData'", + parsed.has("fetchData")); + } + + /** + * The value of the operation name key must be a JSON array. + * Axis2 JSON-RPC requires an array even for single-argument operations. + */ + public void testPayloadTemplateValueIsArray() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode value = MAPPER.readTree(template).path("fetchData"); + assertTrue("Payload template value must be a JSON array", value.isArray()); + } + + /** + * The array must contain exactly one element — the argument wrapper object. + * Axis2 JSON-RPC maps array position to method argument position; all + * userguide services use a single {@code arg0} parameter. + */ + public void testPayloadTemplateArrayHasExactlyOneElement() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode arr = MAPPER.readTree(template).path("fetchData"); + assertEquals("Payload template array must contain exactly one element", 1, arr.size()); + } + + /** + * The single array element must be an object with an {@code arg0} key. + * This is the Axis2 JSON-RPC convention: the named argument wraps the + * actual request POJO. + */ + public void testPayloadTemplateArrayElementHasArg0Key() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode element = MAPPER.readTree(template).path("fetchData").get(0); + assertNotNull("Array element must not be null", element); + assertTrue("Array element must be an object", element.isObject()); + assertFalse("Array element must have 'arg0' key", + element.path("arg0").isMissingNode()); + } + + /** + * The {@code arg0} value must be an empty object — the placeholder for the + * actual request parameters. Callers replace it with their request POJO. + */ + public void testPayloadTemplateArg0IsEmptyObject() throws Exception { + addService("DataService", "fetchData"); + String template = getFirstTool("fetchData").path("x-axis2-payloadTemplate").asText(); + JsonNode arg0 = MAPPER.readTree(template).path("fetchData").get(0).path("arg0"); + assertTrue("arg0 placeholder must be an empty JSON object", arg0.isObject()); + assertEquals("arg0 placeholder must be empty (params go inside it)", 0, arg0.size()); + } + + // ── loginService — the token acquisition entry point ───────────────────── + + /** + * loginService/doLogin is the authentication entry point. + * + * <p>In pyRapi the login call is: + * <pre> + * {"doLogin":[{"arg0":{"email":"[email protected]","credentials":"pass"}}]} + * </pre> + * The MCP catalog template for doLogin must be compatible with this format. + */ + public void testLoginServicePayloadTemplateHasDoLoginKey() throws Exception { + addService("loginService", "doLogin"); + String template = getFirstTool("doLogin").path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertTrue("loginService payload template must have 'doLogin' as top-level key", + parsed.has("doLogin")); + } + + public void testLoginServicePayloadTemplateCompatibleWithPyRapiFormat() throws Exception { + addService("loginService", "doLogin"); + String template = getFirstTool("doLogin").path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + // Verify structural compatibility: {"doLogin":[{"arg0":{}}]} + JsonNode arg0 = parsed.path("doLogin").get(0).path("arg0"); + assertFalse("doLogin template must have arg0", + arg0.isMissingNode()); + // arg0 is the placeholder — callers fill in email/credentials + assertTrue("arg0 must be an object placeholder", + arg0.isObject()); + } + + public void testLoginServiceNotRequiresAuth() throws Exception { + addService("loginService", "doLogin"); + JsonNode tool = getFirstTool("doLogin"); + assertFalse( + "loginService must have x-requiresAuth: false — it IS the token endpoint", + tool.path("x-requiresAuth").asBoolean()); + } + + // ── auth flow: two-phase pattern (login → Bearer → call) ───────────────── + + /** + * Verifies the complete two-phase auth flow documented in the catalog: + * Phase 1: call loginService (no auth) → get token. + * Phase 2: call protected service with Bearer token. + * + * <p>This mirrors the flow in pyRapi/auth.py and rapi-mcp/server/rapi/api.py. + */ + public void testTwoPhaseAuthFlowDocumentedInCatalog() throws Exception { + // Register both the token endpoint and a protected service + addService("loginService", "doLogin"); + addService("testws", "doTestws"); + + JsonNode tools = getCatalogTools(); + + JsonNode loginTool = null; + JsonNode protectedTool = null; + for (JsonNode t : tools) { + if ("doLogin".equals(t.path("name").asText())) loginTool = t; + if ("doTestws".equals(t.path("name").asText())) protectedTool = t; + } + + assertNotNull("loginService/doLogin must appear in catalog", loginTool); + assertNotNull("testws/doTestws must appear in catalog", protectedTool); + + // Phase 1: login is public + assertFalse("doLogin must NOT require auth (phase 1 — get the token)", + loginTool.path("x-requiresAuth").asBoolean()); + + // Phase 2: protected service requires the token obtained in phase 1 + assertTrue("doTestws must require auth (phase 2 — use the token)", + protectedTool.path("x-requiresAuth").asBoolean()); + + // Both must have the Axis2 wrapper format + assertFalse("doLogin must have payload template", + loginTool.path("x-axis2-payloadTemplate").isMissingNode()); + assertFalse("doTestws must have payload template", + protectedTool.path("x-axis2-payloadTemplate").isMissingNode()); + } + + // ── _meta transport contract ────────────────────────────────────────────── + + /** + * The {@code _meta.tokenEndpoint} must point to loginService so MCP clients + * can programmatically discover where to obtain a Bearer token. + */ + public void testMetaTokenEndpointPointsToLoginService() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)) + .path("_meta"); + String tokenEndpoint = meta.path("tokenEndpoint").asText(); + assertTrue("tokenEndpoint must reference loginService", + tokenEndpoint.contains("loginService")); + } + + /** + * The {@code _meta.axis2JsonRpcFormat} placeholder must itself be valid + * JSON after substituting a real operation name and params — demonstrating + * the template is syntactically instructive. + */ + public void testMetaAxis2FormatHintContainsArg0() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)) + .path("_meta"); + String fmt = meta.path("axis2JsonRpcFormat").asText(); + assertTrue("_meta.axis2JsonRpcFormat must document the arg0 wrapper convention", + fmt.contains("arg0")); + } + + /** + * The {@code _meta.authHeader} must document the Bearer scheme so MCP + * clients know how to attach the token obtained from loginService. + * Mirrors the header set in rapi-mcp's RAPIClient._make_request(). + */ + public void testMetaAuthHeaderDocumentsBearerScheme() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)) + .path("_meta"); + String authHeader = meta.path("authHeader").asText(); + assertTrue("_meta.authHeader must document 'Bearer' scheme", + authHeader.contains("Bearer")); + } + + // ── all tools consistent ────────────────────────────────────────────────── + + /** + * Every tool in the catalog must have a payload template whose top-level + * key matches the tool's own name field. + */ + public void testAllToolPayloadTemplatesMatchToolName() throws Exception { + AxisService svc = new AxisService("FinancialBenchmarkService"); + addOperation(svc, "portfolioVariance"); + addOperation(svc, "monteCarlo"); + addOperation(svc, "scenarioAnalysis"); + axisConfig.addService(svc); + + JsonNode tools = getCatalogTools(); + for (JsonNode tool : tools) { + String name = tool.path("name").asText(); + String template = tool.path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertTrue("Tool '" + name + "' payload template top-level key must match tool name", + parsed.has(name)); + } + } + + /** + * All non-login tools must declare auth as required. No service should + * accidentally be marked public. + */ + public void testAllNonLoginToolsRequireAuth() throws Exception { + addService("BigDataH2Service", "processBigDataSet"); + addService("FinancialBenchmarkService", "portfolioVariance"); + addService("testws", "doTestws"); + + JsonNode tools = getCatalogTools(); + for (JsonNode tool : tools) { + assertTrue("Every non-login tool must declare x-requiresAuth: true", + tool.path("x-requiresAuth").asBoolean()); + } + } + + /** + * Annotations must be present on every tool. Missing annotations would + * cause MCP 2025-03-26 spec-compliant clients to reject the catalog. + */ + public void testAllToolsHaveAnnotations() throws Exception { + AxisService svc = new AxisService("CalcService"); + addOperation(svc, "add"); + addOperation(svc, "subtract"); + axisConfig.addService(svc); + + JsonNode tools = getCatalogTools(); + for (JsonNode tool : tools) { + String name = tool.path("name").asText(); + assertFalse("Tool '" + name + "' must have annotations field", + tool.path("annotations").isMissingNode()); + } + } + + // ── helpers ─────────────────────────────────────────────────────────────── + + private void addService(String serviceName, String operationName) throws Exception { + AxisService svc = new AxisService(serviceName); + addOperation(svc, operationName); + axisConfig.addService(svc); + } + + private void addOperation(AxisService svc, String operationName) { + AxisOperation op = new InOutAxisOperation(); + op.setName(QName.valueOf(operationName)); + svc.addOperation(op); + } + + private JsonNode getCatalogTools() throws Exception { + return MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)).path("tools"); + } + + /** Return the tool with the given name, or fail if not found. */ + private JsonNode getFirstTool(String toolName) throws Exception { + JsonNode tools = getCatalogTools(); + for (JsonNode t : tools) { + if (toolName.equals(t.path("name").asText())) return t; + } + fail("Tool '" + toolName + "' not found in catalog"); + return null; // unreachable + } + + // ── mock request ───────────────────────────────────────────────────────── + + private static class MockHttpServletRequest implements HttpServletRequest { + @Override public String getScheme() { return "https"; } + @Override public String getServerName() { return "localhost"; } + @Override public int getServerPort() { return 8443; } + @Override public String getContextPath() { return "/axis2-json-api"; } + + @Override public String getAuthType() { return null; } + @Override public Cookie[] getCookies() { return new Cookie[0]; } + @Override public long getDateHeader(String n) { return 0; } + @Override public String getHeader(String n) { return null; } + @Override public Enumeration<String> getHeaders(String n) { return null; } + @Override public Enumeration<String> getHeaderNames() { return null; } + @Override public int getIntHeader(String n) { return 0; } + @Override public String getMethod() { return "GET"; } + @Override public String getPathInfo() { return null; } + @Override public String getPathTranslated() { return null; } + @Override public String getQueryString() { return null; } + @Override public String getRemoteUser() { return null; } + @Override public boolean isUserInRole(String r) { return false; } + @Override public Principal getUserPrincipal() { return null; } + @Override public String getRequestedSessionId() { return null; } + @Override public String getRequestURI() { return "/axis2-json-api/openapi-mcp.json"; } + @Override public StringBuffer getRequestURL() { return new StringBuffer(); } + @Override public String getServletPath() { return ""; } + @Override public HttpSession getSession(boolean c) { return null; } + @Override public HttpSession getSession() { return null; } + @Override public String changeSessionId() { return null; } + @Override public boolean isRequestedSessionIdValid() { return false; } + @Override public boolean isRequestedSessionIdFromCookie() { return false; } + @Override public boolean isRequestedSessionIdFromURL() { return false; } + @Override public boolean authenticate(HttpServletResponse r) { return false; } + @Override public void login(String u, String p) { } + @Override public void logout() { } + @Override public Collection<Part> getParts() { return null; } + @Override public Part getPart(String n) { return null; } + @Override public <T extends HttpUpgradeHandler> T upgrade(Class<T> c) { return null; } + @Override public Object getAttribute(String n) { return null; } + @Override public Enumeration<String> getAttributeNames() { return null; } + @Override public String getCharacterEncoding() { return null; } + @Override public void setCharacterEncoding(String e) { } + @Override public int getContentLength() { return 0; } + @Override public long getContentLengthLong() { return 0; } + @Override public String getContentType() { return null; } + @Override public ServletInputStream getInputStream() { return null; } + @Override public String getParameter(String n) { return null; } + @Override public Enumeration<String> getParameterNames() { return null; } + @Override public String[] getParameterValues(String n) { return new String[0]; } + @Override public Map<String, String[]> getParameterMap() { return null; } + @Override public String getProtocol() { return "HTTP/2"; } + @Override public String getRemoteAddr() { return "127.0.0.1"; } + @Override public String getRemoteHost() { return "localhost"; } + @Override public void setAttribute(String n, Object o) { } + @Override public void removeAttribute(String n) { } + @Override public Locale getLocale() { return Locale.US; } + @Override public Enumeration<Locale> getLocales() { return null; } + @Override public boolean isSecure() { return true; } + @Override public RequestDispatcher getRequestDispatcher(String p) { return null; } + @Override public int getRemotePort() { return 0; } + @Override public String getLocalName() { return "localhost"; } + @Override public String getLocalAddr() { return "127.0.0.1"; } + @Override public int getLocalPort() { return 8443; } + @Override public ServletContext getServletContext() { return null; } + @Override public AsyncContext startAsync() { return null; } + @Override public AsyncContext startAsync(ServletRequest q, ServletResponse s) { return null; } + @Override public boolean isAsyncStarted() { return false; } + @Override public boolean isAsyncSupported() { return false; } + @Override public AsyncContext getAsyncContext() { return null; } + @Override public DispatcherType getDispatcherType() { return null; } + @Override public BufferedReader getReader() { return null; } + @Override public jakarta.servlet.ServletConnection getServletConnection() { return null; } + @Override public String getProtocolRequestId() { return null; } + @Override public String getRequestId() { return null; } + } +} diff --git a/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogGeneratorTest.java b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogGeneratorTest.java index 242468d35e..ec669d5799 100644 --- a/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogGeneratorTest.java +++ b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogGeneratorTest.java @@ -303,6 +303,224 @@ public class McpCatalogGeneratorTest extends TestCase { } } + // ── catalog _meta ───────────────────────────────────────────────────────── + + /** + * The catalog root must carry a {@code _meta} object so MCP clients know + * the Axis2 JSON-RPC transport contract without reading separate docs. + * Mirrors the pattern in rapi-mcp (Python) where API conventions are + * embedded in the tool catalog for client self-sufficiency. + */ + public void testCatalogHasMetaObject() throws Exception { + JsonNode root = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)); + assertFalse("_meta must be present in catalog root", + root.path("_meta").isMissingNode()); + assertTrue("_meta must be an object", root.path("_meta").isObject()); + } + + public void testMetaHasAxis2JsonRpcFormat() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)).path("_meta"); + assertFalse("_meta.axis2JsonRpcFormat must be present", + meta.path("axis2JsonRpcFormat").isMissingNode()); + String fmt = meta.path("axis2JsonRpcFormat").asText(); + assertTrue("Format must contain operationName placeholder", fmt.contains("operationName")); + assertTrue("Format must contain arg0 wrapper", fmt.contains("arg0")); + } + + public void testMetaHasContentType() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)).path("_meta"); + assertEquals("application/json", meta.path("contentType").asText()); + } + + public void testMetaHasAuthHeaderField() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)).path("_meta"); + String authHeader = meta.path("authHeader").asText(); + assertTrue("authHeader must describe Bearer scheme", + authHeader.contains("Bearer")); + } + + public void testMetaHasTokenEndpoint() throws Exception { + JsonNode meta = MAPPER.readTree(generator.generateMcpCatalogJson(mockRequest)).path("_meta"); + String tokenEndpoint = meta.path("tokenEndpoint").asText(); + assertTrue("tokenEndpoint must reference loginService", + tokenEndpoint.contains("loginService")); + assertTrue("tokenEndpoint must start with POST", + tokenEndpoint.startsWith("POST ")); + } + + // ── x-axis2-payloadTemplate ─────────────────────────────────────────────── + + /** + * Every tool must carry an {@code x-axis2-payloadTemplate} so MCP clients + * know to wrap bare JSON params in the Axis2 JSON-RPC envelope: + * {@code {"operationName":[{"arg0":{...}}]}}. + * + * <p>This is the primary challenge from pyRapi: MCP clients calling Axis2 + * services must use this wrapping format or the call fails silently. + */ + public void testToolHasPayloadTemplateField() throws Exception { + addService("TestService", "testOp"); + JsonNode tool = getCatalogTools().get(0); + assertFalse("x-axis2-payloadTemplate must be present", + tool.path("x-axis2-payloadTemplate").isMissingNode()); + } + + public void testPayloadTemplateContainsOperationName() throws Exception { + addService("TestService", "doSomething"); + JsonNode tool = getCatalogTools().get(0); + String template = tool.path("x-axis2-payloadTemplate").asText(); + assertTrue("Payload template must contain the operation name", + template.contains("doSomething")); + } + + public void testPayloadTemplateIsValidJson() throws Exception { + addService("TestService", "processData"); + JsonNode tool = getCatalogTools().get(0); + String template = tool.path("x-axis2-payloadTemplate").asText(); + // The template itself must be parseable JSON + JsonNode parsed = MAPPER.readTree(template); + assertNotNull("Payload template must be valid JSON", parsed); + } + + public void testPayloadTemplateOperationNameIsTopLevelKey() throws Exception { + addService("OrderService", "placeOrder"); + JsonNode tool = getCatalogTools().get(0); + String template = tool.path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertTrue("Operation name must be top-level key in payload template", + parsed.has("placeOrder")); + } + + public void testPayloadTemplateValueIsArray() throws Exception { + addService("OrderService", "placeOrder"); + JsonNode tool = getCatalogTools().get(0); + String template = tool.path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + assertTrue("Top-level value in payload template must be an array", + parsed.path("placeOrder").isArray()); + } + + public void testPayloadTemplateArrayHasArg0Object() throws Exception { + addService("OrderService", "placeOrder"); + JsonNode tool = getCatalogTools().get(0); + String template = tool.path("x-axis2-payloadTemplate").asText(); + JsonNode parsed = MAPPER.readTree(template); + JsonNode arr = parsed.path("placeOrder"); + assertEquals("Payload template array must have exactly one element", 1, arr.size()); + assertFalse("Array element must have 'arg0' key", + arr.get(0).path("arg0").isMissingNode()); + } + + public void testPayloadTemplatesDistinctAcrossOperations() throws Exception { + AxisService svc = new AxisService("CalcService"); + addOperation(svc, "add"); + addOperation(svc, "subtract"); + axisConfig.addService(svc); + + JsonNode tools = getCatalogTools(); + java.util.Set<String> templates = new java.util.HashSet<>(); + for (JsonNode t : tools) templates.add(t.path("x-axis2-payloadTemplate").asText()); + assertEquals("Each operation must have a distinct payload template", 2, templates.size()); + } + + // ── x-requiresAuth ──────────────────────────────────────────────────────── + + /** + * Non-login services must declare {@code x-requiresAuth: true} so MCP + * clients know to acquire a Bearer token via loginService first — matching + * the auth flow pyRapi implements in pyrapi/auth.py. + */ + public void testNonLoginServiceRequiresAuth() throws Exception { + addService("testws", "doTestws"); + JsonNode tool = getCatalogTools().get(0); + assertTrue("Protected services must have x-requiresAuth: true", + tool.path("x-requiresAuth").asBoolean()); + } + + public void testLoginServiceDoesNotRequireAuth() throws Exception { + addService("loginService", "doLogin"); + JsonNode tool = getCatalogTools().get(0); + assertFalse("loginService must have x-requiresAuth: false", + tool.path("x-requiresAuth").asBoolean()); + } + + public void testLoginServiceCaseInsensitive() throws Exception { + addService("LoginService", "doLogin"); // capital L + JsonNode tool = getCatalogTools().get(0); + assertFalse("loginService check must be case-insensitive", + tool.path("x-requiresAuth").asBoolean()); + } + + public void testFinancialServiceRequiresAuth() throws Exception { + addService("FinancialBenchmarkService", "portfolioVariance"); + JsonNode tool = getCatalogTools().get(0); + assertTrue("FinancialBenchmarkService must require auth", + tool.path("x-requiresAuth").asBoolean()); + } + + public void testBigDataServiceRequiresAuth() throws Exception { + addService("BigDataH2Service", "processBigDataSet"); + JsonNode tool = getCatalogTools().get(0); + assertTrue("BigDataH2Service must require auth", + tool.path("x-requiresAuth").asBoolean()); + } + + // ── annotations (MCP 2025-03-26) ───────────────────────────────────────── + + /** + * Tools must carry MCP 2025 {@code annotations} for client-side safety + * hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint). + * Matches the annotations pattern in internal-alpha-theory-mcp. + */ + public void testToolHasAnnotationsField() throws Exception { + addService("TestService", "testOp"); + JsonNode tool = getCatalogTools().get(0); + assertFalse("annotations must be present on each tool", + tool.path("annotations").isMissingNode()); + assertTrue("annotations must be an object", + tool.path("annotations").isObject()); + } + + public void testAnnotationsHasReadOnlyHint() throws Exception { + addService("TestService", "testOp"); + JsonNode annotations = getCatalogTools().get(0).path("annotations"); + assertFalse("annotations.readOnlyHint must be present", + annotations.path("readOnlyHint").isMissingNode()); + assertTrue("annotations.readOnlyHint must be boolean", + annotations.path("readOnlyHint").isBoolean()); + } + + public void testAnnotationsHasDestructiveHint() throws Exception { + addService("TestService", "testOp"); + JsonNode annotations = getCatalogTools().get(0).path("annotations"); + assertFalse("annotations.destructiveHint must be present", + annotations.path("destructiveHint").isMissingNode()); + } + + public void testAnnotationsHasIdempotentHint() throws Exception { + addService("TestService", "testOp"); + JsonNode annotations = getCatalogTools().get(0).path("annotations"); + assertFalse("annotations.idempotentHint must be present", + annotations.path("idempotentHint").isMissingNode()); + } + + public void testAnnotationsHasOpenWorldHint() throws Exception { + addService("TestService", "testOp"); + JsonNode annotations = getCatalogTools().get(0).path("annotations"); + assertFalse("annotations.openWorldHint must be present", + annotations.path("openWorldHint").isMissingNode()); + } + + public void testAllAnnotationHintsAreBooleans() throws Exception { + addService("TestService", "testOp"); + JsonNode annotations = getCatalogTools().get(0).path("annotations"); + String[] hints = {"readOnlyHint", "destructiveHint", "idempotentHint", "openWorldHint"}; + for (String hint : hints) { + assertTrue("annotations." + hint + " must be a boolean value", + annotations.path(hint).isBoolean()); + } + } + // ── tool list mirrors existing OpenAPI paths ────────────────────────────── /** diff --git a/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogHandlerTest.java b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogHandlerTest.java index 04ff450e42..6ff49dd879 100644 --- a/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogHandlerTest.java +++ b/modules/openapi/src/test/java/org/apache/axis2/openapi/McpCatalogHandlerTest.java @@ -166,7 +166,7 @@ public class McpCatalogHandlerTest extends TestCase { assertTrue("processPayment tool must be in catalog", found); } - // ── security headers (mirrors OpenAPI JSON endpoint) ───────────────────── + // ── security headers ────────────────────────────────────────────────────── public void testMcpCatalogHasSecurityHeadersIfImplemented() throws Exception { handler.handleMcpCatalogRequest(mockRequest, mockResponse); @@ -178,6 +178,98 @@ public class McpCatalogHandlerTest extends TestCase { assertTrue(root.has("tools")); } + /** + * The MCP catalog must include Cache-Control: no-cache so that MCP clients + * always fetch a fresh catalog (service list can change after deployment). + * Stale catalogs expose clients to "unknown tool" errors. + */ + public void testMcpCatalogHasCacheControlNoCache() throws Exception { + handler.handleMcpCatalogRequest(mockRequest, mockResponse); + String cc = mockResponse.getHeader("Cache-Control"); + assertNotNull("Cache-Control header must be set", cc); + assertTrue("Cache-Control must contain no-cache or no-store", + cc.contains("no-cache") || cc.contains("no-store")); + } + + /** + * X-Content-Type-Options: nosniff prevents MIME-type sniffing by browsers + * and some MCP client implementations that embed a WebView. + */ + public void testMcpCatalogHasXContentTypeOptionsNoSniff() throws Exception { + handler.handleMcpCatalogRequest(mockRequest, mockResponse); + String xcto = mockResponse.getHeader("X-Content-Type-Options"); + assertNotNull("X-Content-Type-Options must be set", xcto); + assertEquals("nosniff", xcto); + } + + /** + * CORS Allow-Methods must include GET — the catalog endpoint is a GET-only + * resource. MCP clients POST to the individual service endpoints listed in + * the catalog, not to the catalog URL itself. + */ + public void testMcpCatalogCorsMethodsIncludesGet() throws Exception { + handler.handleMcpCatalogRequest(mockRequest, mockResponse); + String methods = mockResponse.getHeader("Access-Control-Allow-Methods"); + assertNotNull("Access-Control-Allow-Methods must be set", methods); + assertTrue("CORS methods must include GET", methods.contains("GET")); + } + + // ── new catalog fields reflected in handler response ────────────────────── + + /** + * The handler response body must contain the {@code _meta} object that + * documents the Axis2 JSON-RPC transport contract. + */ + public void testMcpCatalogBodyHasMetaObject() throws Exception { + handler.handleMcpCatalogRequest(mockRequest, mockResponse); + JsonNode root = MAPPER.readTree(mockResponse.getWriterContent()); + assertFalse("Response body must contain _meta", root.path("_meta").isMissingNode()); + assertTrue("_meta must be an object", root.path("_meta").isObject()); + } + + public void testMcpCatalogMetaDocumentsAxis2Format() throws Exception { + handler.handleMcpCatalogRequest(mockRequest, mockResponse); + JsonNode meta = MAPPER.readTree(mockResponse.getWriterContent()).path("_meta"); + assertFalse("_meta.axis2JsonRpcFormat must be present", + meta.path("axis2JsonRpcFormat").isMissingNode()); + String fmt = meta.path("axis2JsonRpcFormat").asText(); + assertTrue("Format string must contain 'arg0'", fmt.contains("arg0")); + } + + /** + * Tools served via the HTTP handler must carry the payload template and + * auth annotation — verifies the full stack from handler to generator. + */ + public void testMcpCatalogToolsHavePayloadTemplateAndAuth() throws Exception { + // Register a service to get at least one tool + AxisConfiguration axisConfig = new AxisConfiguration(); + AxisService svc = new AxisService("InventoryService"); + AxisOperation op = new InOutAxisOperation(); + op.setName(javax.xml.namespace.QName.valueOf("getStock")); + svc.addOperation(op); + axisConfig.addService(svc); + + ConfigurationContext configCtx = new ConfigurationContext(axisConfig); + SwaggerUIHandler h = new SwaggerUIHandler(configCtx); + MockHttpServletResponse resp = new MockHttpServletResponse(); + h.handleMcpCatalogRequest(mockRequest, resp); + + JsonNode tools = MAPPER.readTree(resp.getWriterContent()).path("tools"); + assertTrue("At least one tool must be present", tools.size() > 0); + + JsonNode tool = null; + for (JsonNode t : tools) { + if ("getStock".equals(t.path("name").asText())) { tool = t; break; } + } + assertNotNull("getStock tool must appear in catalog", tool); + assertFalse("Tool must have x-axis2-payloadTemplate", + tool.path("x-axis2-payloadTemplate").isMissingNode()); + assertFalse("Tool must have x-requiresAuth", + tool.path("x-requiresAuth").isMissingNode()); + assertFalse("Tool must have annotations", + tool.path("annotations").isMissingNode()); + } + // ── mocks ───────────────────────────────────────────────────────────────── private static class MockHttpServletRequest implements HttpServletRequest {
