add parameter types to tool call arguments

Author: johnoliver

aiservices/openai/src/main/java/com/microsoft/semantickernel/aiservices/openai/chatcompletion/OpenAIFunction.java

@@ -13,6 +13,7 @@
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.stream.Collectors;
 import javax.annotation.Nonnull;
@@ -149,7 +150,13 @@ public Map<String, JsonNode> getProperties() {
     private static String getSchemaForFunctionParameter(@Nullable InputVariable parameter) {
         List<String> entries = new ArrayList<>();
 
-        entries.add("\"type\":\"string\"");
+        String type = "string";
+
+        if (parameter != null && parameter.getType() != null) {
+            type = getJavaTypeToOpenAiFunctionType(parameter.getType());
+        }
+
+        entries.add("\"type\":\"" + type + "\"");
 
         // Add description if present
         if (parameter != null && parameter.getDescription() != null && !parameter.getDescription()
@@ -179,4 +186,28 @@ private static String getSchemaForFunctionParameter(@Nullable InputVariable para
 
         return "{" + schema + "}";
     }
+
+    private static String getJavaTypeToOpenAiFunctionType(String javaType) {
+        switch (javaType.toLowerCase(Locale.ROOT)) {
+            case "boolean":
+                return "boolean";
+            case "integer":
+            case "int":
+            case "long":
+            case "short":
+            case "byte":
+                return "integer";
+            case "double":
+            case "float":
+                return "number";
+            case "string":
+                return "string";
+            case "array":
+                return "array";
+            case "void":
+                return "null";
+            default:
+                return "object";
+        }
+    }
 }

samples/semantickernel-concepts/semantickernel-syntax-examples/src/main/java/com/microsoft/semantickernel/samples/demos/lights/LightsPlugin.java

@@ -26,8 +26,8 @@ public List<LightModel> getLights() {
 
     @DefineKernelFunction(name = "change_state", description = "Changes the state of the light")
     public LightModel changeState(
-        @KernelFunctionParameter(name = "id", description = "The ID of the light to change") int id,
-        @KernelFunctionParameter(name = "isOn", description = "The new state of the light") boolean isOn) {
+        @KernelFunctionParameter(name = "id", description = "The ID of the light to change", type = int.class) int id,
+        @KernelFunctionParameter(name = "isOn", description = "The new state of the light", type = boolean.class) boolean isOn) {
         System.out.println("Changing light " + id + " " + isOn);
         Optional<LightModel> light = lights.stream()
             .filter(l -> l.getId() == id)

semantickernel-api/src/main/java/com/microsoft/semantickernel/semanticfunctions/KernelFunctionFromMethod.java

@@ -476,7 +476,7 @@ private static Object toObjectType(
             ContextVariableTypeConverter<?> c = sourceType.getConverter();
 
             Object converted = c.toObject(invocationContext.getContextVariableTypes(), sourceValue,
-                targetArgType);
+                targetArgType, false);
             if (converted != null) {
                 return converted;
             }