NL Analytics MCP Server for Apache Druid

/* * Copyright (C) 2025 Christian Schmitt, Tim Frey * * Licensed 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 com.iunera.druidmcpserver; import com.iunera.druidmcpserver.datamanagement.query.DataAnalysisPrompts; import com.iunera.druidmcpserver.datamanagement.retention.RetentionPrompts; import com.iunera.druidmcpserver.ingestion.IngestionManagementPrompts; import com.iunera.druidmcpserver.monitoring.health.prompts.ClusterManagementPrompts; import com.iunera.druidmcpserver.operations.OperationalPrompts; import io.modelcontextprotocol.spec.McpSchema.GetPromptResult; import io.modelcontextprotocol.spec.McpSchema.TextContent; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.test.context.TestPropertySource; import static org.junit.jupiter.api.Assertions.*; /** * Test class for Druid MCP Prompt Providers */ @SpringBootTest @TestPropertySource(properties = { "mcp.prompts.watermark=Test Watermark - Druid MCP Server", "mcp.prompts.custom.organization-name=Test Organization", "mcp.prompts.custom.environment=test", "mcp.prompts.custom.contact-info=test@example.com" }) class DruidPromptProvidersTest { @Autowired private DataAnalysisPrompts dataAnalysisPromptProvider; @Autowired private ClusterManagementPrompts clusterManagementPromptProvider; @Autowired private IngestionManagementPrompts ingestionManagementPromptProvider; @Autowired private RetentionPrompts retentionPromptProvider; @Autowired private OperationalPrompts operationalPromptProvider; @Test void contextLoads() { System.out.println("[DEBUG_LOG] Testing context loading for prompt providers"); assertNotNull(dataAnalysisPromptProvider); assertNotNull(clusterManagementPromptProvider); assertNotNull(ingestionManagementPromptProvider); assertNotNull(retentionPromptProvider); assertNotNull(operationalPromptProvider); System.out.println("[DEBUG_LOG] All prompt providers loaded successfully"); } @Test void testDataExplorationPrompt() { System.out.println("[DEBUG_LOG] Testing data exploration prompt"); GetPromptResult result = dataAnalysisPromptProvider.dataExplorationPrompt("test-datasource"); assertNotNull(result); assertEquals("Druid Data Exploration", result.description()); assertNotNull(result.messages()); assertFalse(result.messages().isEmpty()); // Access the text content properly TextContent textContent = (TextContent) result.messages().get(0).content(); String content = textContent.text(); assertTrue(content.contains("test-datasource")); assertTrue(content.contains("Test Organization")); assertTrue(content.contains("test")); assertTrue(content.contains("Test Watermark")); System.out.println("[DEBUG_LOG] Data exploration prompt test passed"); } @Test void testQueryOptimizationPrompt() { System.out.println("[DEBUG_LOG] Testing query optimization prompt"); String testQuery = "SELECT * FROM test_datasource WHERE __time >= CURRENT_TIMESTAMP - INTERVAL '1' DAY"; GetPromptResult result = dataAnalysisPromptProvider.queryOptimizationPrompt(testQuery); assertNotNull(result); assertEquals("Druid Query Optimization", result.description()); assertNotNull(result.messages()); assertFalse(result.messages().isEmpty()); TextContent textContent = (TextContent) result.messages().get(0).content(); String content = textContent.text(); assertTrue(content.contains(testQuery)); assertTrue(content.contains("Test Organization")); assertTrue(content.contains("test@example.com")); System.out.println("[DEBUG_LOG] Query optimization prompt test passed"); } @Test void testHealthCheckPrompt() { System.out.println("[DEBUG_LOG] Testing health check prompt"); GetPromptResult result = clusterManagementPromptProvider.healthCheckPrompt(); assertNotNull(result); assertEquals("Druid Health Check", result.description()); assertNotNull(result.messages()); assertFalse(result.messages().isEmpty()); TextContent textContent = (TextContent) result.messages().get(0).content(); String content = textContent.text(); assertTrue(content.contains("comprehensive health check")); assertTrue(content.contains("Test Organization")); assertTrue(content.contains("test")); System.out.println("[DEBUG_LOG] Health check prompt test passed"); } @Test void testEmergencyResponsePrompt() { System.out.println("[DEBUG_LOG] Testing emergency response prompt"); GetPromptResult result = operationalPromptProvider.emergencyResponsePrompt(); assertNotNull(result); assertEquals("Druid Emergency Response", result.description()); assertNotNull(result.messages()); assertFalse(result.messages().isEmpty()); TextContent textContent = (TextContent) result.messages().get(0).content(); String content = textContent.text(); assertTrue(content.contains("urgent issue")); assertTrue(content.contains("**URGENT")); assertTrue(content.contains("Emergency Contact")); System.out.println("[DEBUG_LOG] Emergency response prompt test passed"); } @Test void testWatermarkConfiguration() { System.out.println("[DEBUG_LOG] Testing watermark configuration"); GetPromptResult result = dataAnalysisPromptProvider.dataExplorationPrompt(null); TextContent textContent = (TextContent) result.messages().get(0).content(); String content = textContent.text(); assertTrue(content.contains("Test Watermark - Druid MCP Server")); System.out.println("[DEBUG_LOG] Watermark configuration test passed"); } }