fix: version and cache metadata

Author: zakahan

pyproject.toml

@@ -15,7 +15,7 @@ dependencies = [
     "pydantic-settings>=2.10.1", # Config management
     "a2a-sdk>=0.3.0", # For Google Agent2Agent protocol
     "deprecated>=1.2.18",
-    "google-adk>=1.10.0", # For basic agent architecture
+    "google-adk>=1.15.0", # For basic agent architecture
     "litellm>=1.79.3", # For model inference
     "loguru>=0.7.3", # For better logging
     "opentelemetry-exporter-otlp>=1.35.0",

veadk/models/ark_llm.py

@@ -263,11 +263,20 @@ def add_previous_response_id(
         and "response_id" in events[-2].custom_metadata
     ):
         previous_response_id = events[-2].custom_metadata["response_id"]
-        llm_request.cache_metadata = CacheMetadata(
-            cache_name=previous_response_id,
-            expire_time=0,
-            fingerprint="",
-            invocations_used=0,
-            cached_contents_count=0,
-        )
+        if "contents_count" in CacheMetadata.model_fields:  # adk >= 1.17
+            llm_request.cache_metadata = CacheMetadata(
+                cache_name=previous_response_id,
+                expire_time=0,
+                fingerprint="",
+                invocations_used=0,
+                contents_count=0,
+            )
+        else:  # 1.15 <= adk < 1.17
+            llm_request.cache_metadata = CacheMetadata(
+                cache_name=previous_response_id,
+                expire_time=0,
+                fingerprint="",
+                invocations_used=0,
+                cached_contents_count=0,
+            )
     return