Add completion API support to the MCP protocol implementation:
- Add CompleteRequest and CompleteResult schema classes
- Implement completion capabilities in ServerCapabilities
- Add completion handlers in McpAsyncServer and McpServer
- Add completion client methods in McpAsyncClient and McpSyncClient
- Add CompletionRefKey and completion specifications in McpServerFeatures
- Add integration test for completion functionality
- Fix isPresent() check to use isEmpty() in WebMvcSseServerTransportProvider
- Replace McpServerFeatures.CompletionRefKey by McpSchemaCompleteReference
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: jitokim <pigberger70@gmail.com>
- Replace StepVerifier with assertWith for cleaner test assertions
- Add try-with-resources blocks for proper client resource management
- Use closeGracefully().block() for proper server shutdown
Signed-off-by: Dariusz Jędrzejczyk <dariusz.jedrzejczyk@broadcom.com>
Adds the ability to configure request timeouts for MCP server operations. This enhancement
allows setting a custom duration to wait for server responses before timing out requests,
which applies to all requests made through the client including tool calls, resource access,
and prompt operations.
- Add requestTimeout parameter to McpServerSession constructor
- Add requestTimeout field and builder method to server classes
- Pass timeout configuration through to session creation
- Add tests for both success and failure scenarios across different transport implementations
- Default timeout is set to 10 seconds if not explicitly configured.
- Add TestUtil class with findAvailablePort() method to the mcp-test module
- Add findAvailablePort() method to TomcatTestUtil classes
- Replace hardcoded port numbers with dynamic port allocation
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Replace index-based assertions with content-based lookups using a notification map.
This change makes the tests more resilient by removing the dependency on
notification order, which is important for asynchronous messaging tests.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Replace index-based assertions with content-based lookups using a notification map.
This change makes the tests more resilient by removing the dependency on
notification order, which is important for asynchronous messaging tests.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Refactors the MCP logging system to use the exchange mechanism for sending
logging notifications only to specific client sessions rather than broadcasting to all clients.
- Move logging notification delivery from server-wide broadcast to per-session exchange
- Implement per-session minimum logging level tracking and filtering
- Add proper logging level filtering at the exchange level
- Change setLoggingLevel from notification to request/response pattern (breaking change)
- Deprecate global server.loggingNotification in favor of exchange.loggingNotification
- Add SetLevelRequest record to McpSchema
- Add integration test demonstrating filtered logging notifications
Resolves#131
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Co-authored-by: Dariusz Jędrzejczyk <dariusz.jedrzejczyk@broadcom.com>
Add error handling to return a 404 NOT_FOUND response when a request
is made with a non-existent session ID. This prevents potential
NullPointerExceptions when processing requests with invalid session IDs.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
* refactor: change notification params type from Map<String,Object> to Object
This change generalizes the parameter type for notification methods across the MCP framework,
allowing for more flexible parameter passing. Instead of requiring parameters to be structured
as a Map<String,Object>, the API now accepts any Object as parameters.
The primary motivation is to simplify client usage by allowing direct passing of strongly-typed
objects without requiring conversion to a Map first, as demonstrated in the McpAsyncServer
logging notification implementation.
Affected components:
- McpSession interface and implementations
- McpServerTransportProvider interface and implementations
- McpSchema JSONRPCNotification record
---------
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Add builder customizeClient() and customizeRequest() methods
- Enable HTTP client and request configuration through consumer-based customization
- Deprecate direct constructors in favor of the more flexible builder approach
- Add test coverage for customization capabilities
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Enhance HttpServletSseServerTransportProvider to support deployment under non-root context paths by:
- Adding baseUrl field and DEFAULT_BASE_URL constant
- Creating new constructor that accepts a baseUrl parameter
- Extending Builder with baseUrl configuration method
- Prepending baseUrl to message endpoint in SSE events
- Add HttpServletSseServerCustomContextPathTests to verify custom context path functionality
- Extract common Tomcat server setup code to TomcatTestUtil for test reuse
Related to #79
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Adds the ability to specify a base URL prefix for message endpoints in the
WebFlux SSE server transport provider. This enhancement allows for proper
URL construction when the server is running behind a proxy or in a context
with a base path.
- Add new constructor with baseUrl parameter
- Add basePath() method to Builder class
- Modify SSE endpoint event to include baseUrl prefix
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Adds the ability to specify a base URL for message endpoints in WebMvcSseServerTransportProvider,
enabling proper handling of custom servlet context paths in Spring WebMVC applications.
This ensures that clients receive the correct full endpoint URL when connecting through SSE.
- Add messageBaseUrl field to WebMvcSseServerTransportProvider
- Create new constructor that accepts messageBaseUrl parameter
- Update endpoint event to include base URL in the message endpoint
- Add TomcatTestUtil class to simplify test server creation
- Add WebMvcSseCustomContextPathTests to verify custom context path functionality
- Refactor WebMvcSseIntegrationTests to use the new TomcatTestUtil
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Replace Flux.fromStream(sessions.values().stream()) with more efficient
Flux.fromIterable(sessions.values()) to eliminate unnecessary stream
conversion when broadcasting messages to active sessions
Signed-off-by: jitokim <pigberger70@gmail.com>
Enhances FlowSseClient and HttpClientSseClientTransport to accept a custom HttpRequest.Builder,
allowing for greater flexibility when configuring HTTP requests.
This enables clients to customize headers, timeouts, and other request properties across
all SSE connections and message sending operations.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Add constructor to CallToolResult with one String entry
- Add a new constructor to CallToolRequest that accepts JSON string arguments
- Implement a builder pattern for CallToolResult with methods for adding content items
- Add test coverage for new functionality
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
Enhances WebFlux SSE transport implementation with customizable endpoint paths:
- Add configurable SSE endpoint support in both client and server transports
- Update tests to verify custom SSE endpoint functionality
- Implement builder pattern to support the new configuration options
Co-authored-by: haidao <wwulfric@gmail.com>
Co-authored-by: Harry <34418180+HarryFQG@users.noreply.github.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Add support for customizable SSE endpoints in HttpClientSseClientTransport
- Replace pathInfo with requestURI in HttpServletSseServerTransportProvider for more reliable endpoint matching
- Implement builder pattern to support the customization options
Related to #40
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
These changes are part of the planned deprecation cycle announced in 0.8.0,
with the deprecated classes scheduled for removal in 0.9.0
- Delete WebFluxSseServerTransport, WebMvcSseServerTransport, StdioServerTransport, and HttpServletSseServerTransport
- Remove deprecated interfaces: ServerMcpTransport, ClientMcpTransport
- Delete DefaultMcpSession implementation
- Remove all deprecated test classes for the removed implementations
- Update references to use McpServerTransport and McpClientTransport interfaces
- Split MockMcpTransport into client and server implementations
* Rename MockMcpTransport to MockMcpClientTransport in mcp/src/test
* Create new MockMcpServerTransport implementation
* Add MockMcpServerTransportProvider for server tests
* Mark MockMcpTransport in mcp-test module as deprecated
* Update all test classes to use the new implementations
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Extract message processing initialization from StdioMcpSessionTransport constructor into a
separate initProcessing() method.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
Set autoPublish to true in the Maven configuration to
automatically publish artifacts to the Central repository when the release is performed.
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
- Implements a builder pattern for CreateMessageRequest
- Updates corresponding tests to use the new builder syntax
- Add ModelPreferences builder and ModelHint helper
- Use builder pattern for CreateMessageRequest in integration tests
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
This commit introduces a major refactoring of the MCP Java SDK to implement a session-based architecture
for server-side implementations. The changes improve the SDK's ability to handle multiple concurrent
client connections and provide an API better aligned with the MCP specification.
Key changes:
- Introduce McpServerTransportProvider interface to manage client connections
- Rename ClientMcpTransport to McpClientTransport and ServerMcpTransport to McpServerTransport
- Add exchange objects (McpAsyncServerExchange, McpSyncServerExchange) for client interaction
- Update handler signatures to include exchange parameter: (args) -> result to (exchange, args) -> result
- Rename Registration classes to Specification classes
- Update method names (e.g., rootsChangeConsumers to rootsChangeHandlers)
- Deprecate old interfaces and classes for removal in 0.9.0
- Add migration guide (migration-0.8.0.md)
Resolves#9, #15
Co-authored-by: Christian Tzolov <christian.tzolov@broadcom.com>
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
This change uses VirtualTimeScheduler and pretends enough time has
passed to trigger a timeout on the initialization.
Another problem with reliability of the tests was that the used
testcontainer for the SSE server does not support multiple clients and
the existence of both the global client for the entire suite and some
customized local clients in some tests caused responses to be delivered
to the other client at some racing situations. Now each test creates a
dedicated client and performs cleanup locally.
While these tests were improved, two other issues were found and fixed.
The first one is that the closeGracefully of DefaultMcpSession was not
lazy and would trigger connection disposal before the returned Mono was
subscribed. The second one was dealing with closing the StdIo client
before the process was started. In such a case there should not be an
error but rather a warning and successful completion.
- Add configurable initialization timeout separate from request timeout
- Rename ServletSse* test classes to HttpSse* for better naming consistency
- Replace direct .block() calls with StepVerifier for better reactive testing
- Change ping() method to return Mono instead of Mono
- Improve error handling and reactive programming patterns throughout tests
- Chain reactive operations for cleaner test flow
Signed-off-by: Christian Tzolov <christian.tzolov@broadcom.com>
