Fix visualization tool

Signed-off-by: Nathalie Jonathan <[email protected]>

Author: nathaliellenaa

ml-algorithms/src/main/java/org/opensearch/ml/engine/algorithms/tool/MLToolExecutor.java

@@ -85,7 +85,7 @@ public void execute(Input input, ActionListener<Output> listener) {
         try {
             Map<String, String> mutableParams = new HashMap<>(parameters);
             Map<String, Object> originalParams = toolMLInput.getOriginalParameters();
-            Tool tool = toolFactory.create(originalParams != null ? originalParams : new HashMap<>(mutableParams));
+            Tool tool = toolFactory.create(originalParams);
 
             if (!tool.validate(mutableParams)) {
                 listener.onFailure(new IllegalArgumentException("Invalid parameters for tool: " + toolName));

ml-algorithms/src/main/java/org/opensearch/ml/engine/tools/VisualizationsTool.java

@@ -204,7 +204,9 @@ public VisualizationsTool create(Map<String, Object> params) {
             } catch (NumberFormatException ignored) {
                 size = DEFAULT_SIZE;
             }
-            return VisualizationsTool.builder().client(client).index(index).size(size).build();
+            VisualizationsTool tool = VisualizationsTool.builder().client(client).index(index).size(size).build();
+            tool.maxInputLength = ConfigurationUtils.readIntProperty(TYPE, null, params, MAX_INPUT_LENGTH_FIELD, DEFAULT_MAX_INPUT_LENGTH);
+            return tool;
         }
 
         @Override