add IT flow agent with search index tool (opensearch-project#2448)

Signed-off-by: Jing Zhang <jngz@amazon.com>

Author: jngz-es

plugin/src/test/java/org/opensearch/ml/rest/RestMLFlowAgentIT.java

@@ -9,11 +9,26 @@
 import java.util.List;
 import java.util.Map;
 
+import org.apache.hc.core5.http.ParseException;
+import org.junit.After;
+import org.junit.Before;
 import org.opensearch.client.Response;
 import org.opensearch.ml.utils.TestHelper;
 
 public class RestMLFlowAgentIT extends MLCommonsRestTestCase {
 
+    private String irisIndex = "iris_data";
+
+    @Before
+    public void setup() throws IOException, ParseException {
+        ingestIrisData(irisIndex);
+    }
+
+    @After
+    public void deleteIndices() throws IOException {
+        deleteIndexWithAdminClient(irisIndex);
+    }
+
     public void testAgentCatIndexTool() throws IOException {
         // Register agent with CatIndexTool.
         Response response = registerAgentWithCatIndexTool();
@@ -35,6 +50,27 @@ public void testAgentCatIndexTool() throws IOException {
         assertTrue(result.contains(".plugins-ml-agent"));
     }
 
+    public void testAgentSearchIndexTool() throws IOException {
+        // Register agent with SearchIndexTool.
+        Response response = registerAgentWithSearchIndexTool();
+        Map responseMap = parseResponseToMap(response);
+        String agentId = (String) responseMap.get("agent_id");
+        assertNotNull(agentId);
+        assertEquals(20, agentId.length());
+
+        // Execute agent.
+        response = executeAgentSearchIndexTool(agentId);
+        responseMap = parseResponseToMap(response);
+        List responseList = (List) responseMap.get("inference_results");
+        responseMap = (Map) responseList.get(0);
+        responseList = (List) responseMap.get("output");
+        responseMap = (Map) responseList.get(0);
+        assertEquals("response", responseMap.get("name"));
+        String result = (String) responseMap.get("result");
+        assertNotNull(result);
+        assertTrue(result.contains("\"_source\":{\"petal_length_in_cm\""));
+    }
+
     public static Response registerAgentWithCatIndexTool() throws IOException {
         String registerAgentEntity = "{\n"
             + "  \"name\": \"Test_Agent_For_CatIndex_tool\",\n"
@@ -54,20 +90,50 @@ public static Response registerAgentWithCatIndexTool() throws IOException {
             .makeRequest(client(), "POST", "/_plugins/_ml/agents/_register", null, TestHelper.toHttpEntity(registerAgentEntity), null);
     }
 
+    public static Response registerAgentWithSearchIndexTool() throws IOException {
+        String registerAgentEntity = "{\n"
+            + "  \"name\": \"Test_Agent_For_SearchIndex_tool\",\n"
+            + "  \"type\": \"flow\",\n"
+            + "  \"description\": \"this is a test agent for the SearchIndexTool\",\n"
+            + "  \"tools\": [\n"
+            + "      {\n"
+            + "      \"type\": \"SearchIndexTool\""
+            + "      }\n"
+            + "  ]\n"
+            + "}";
+        return TestHelper
+            .makeRequest(client(), "POST", "/_plugins/_ml/agents/_register", null, TestHelper.toHttpEntity(registerAgentEntity), null);
+    }
+
     public static Response executeAgentCatIndexTool(String agentId) throws IOException {
-        String question = "How many indices do I have?";
-        return executeAgent(agentId, question);
+        String question = "\"How many indices do I have?\"";
+        return executeAgent(agentId, Map.of("question", question));
     }
 
-    public static Response executeAgent(String agentId, String question) throws IOException {
-        String executeAgentEntity = "{\n" + "  \"parameters\": {\n" + "    \"question\": \"" + question + "    \"\n" + "  }\n" + "}";
+    public static Response executeAgentSearchIndexTool(String agentId) throws IOException {
+        String input = "{\"index\": \"iris_data\", \"query\": {\"size\": 2,  \"_source\": \"petal_length_in_cm\"}}";
+        return executeAgent(agentId, Map.of("input", input));
+    }
+
+    public static Response executeAgent(String agentId, Map<String, String> args) throws IOException {
+        if (args == null || args.isEmpty()) {
+            return null;
+        }
+
+        // Construct parameters.
+        StringBuilder entityBuilder = new StringBuilder("{\"parameters\":{");
+        for (Map.Entry entry : args.entrySet()) {
+            entityBuilder.append('"').append(entry.getKey()).append("\":").append(entry.getValue()).append(',');
+        }
+        entityBuilder.replace(entityBuilder.length() - 1, entityBuilder.length(), "}}");
+
         return TestHelper
             .makeRequest(
                 client(),
                 "POST",
                 String.format("/_plugins/_ml/agents/%s/_execute", agentId),
                 null,
-                TestHelper.toHttpEntity(executeAgentEntity),
+                TestHelper.toHttpEntity(entityBuilder.toString()),
                 null
             );
     }