build: add jsonschema library to core dependencies (#8753)

* add jsonschema to core dependencies

* release note

haystack/components/validators/json_schema.py

@@ -5,12 +5,10 @@
 import json
 from typing import Any, Dict, List, Optional
 
+from jsonschema import ValidationError, validate
+
 from haystack import component
 from haystack.dataclasses import ChatMessage
-from haystack.lazy_imports import LazyImport
-
-with LazyImport(message="Run 'pip install jsonschema'") as jsonschema_import:
-    from jsonschema import ValidationError, validate
 
 
 def is_valid_json(s: str) -> bool:
@@ -110,7 +108,6 @@ def __init__(self, json_schema: Optional[Dict[str, Any]] = None, error_template:
             the messages' content is validated.
         :param error_template: A custom template string for formatting the error message in case of validation failure.
         """
-        jsonschema_import.check()
         self.json_schema = json_schema
         self.error_template = error_template
 

haystack/tools/tool.py

@@ -5,15 +5,13 @@
 from dataclasses import asdict, dataclass
 from typing import Any, Callable, Dict, List, Optional
 
+from jsonschema import Draft202012Validator
+from jsonschema.exceptions import SchemaError
+
 from haystack.core.serialization import generate_qualified_class_name, import_class_by_name
-from haystack.lazy_imports import LazyImport
 from haystack.tools.errors import ToolInvocationError
 from haystack.utils import deserialize_callable, serialize_callable
 
-with LazyImport(message="Run 'pip install jsonschema'") as jsonschema_import:
-    from jsonschema import Draft202012Validator
-    from jsonschema.exceptions import SchemaError
-
 
 @dataclass
 class Tool:
@@ -39,7 +37,6 @@ class Tool:
     function: Callable
 
     def __post_init__(self):
-        jsonschema_import.check()
         # Check that the parameters define a valid JSON schema
         try:
             Draft202012Validator.check_schema(self.parameters)

pyproject.toml

@@ -57,6 +57,7 @@ dependencies = [
   "requests",
   "numpy",
   "python-dateutil",
+  "jsonschema",             # JsonSchemaValidator, Tool
   "haystack-experimental",
 ]
 
@@ -116,9 +117,6 @@ extra-dependencies = [
   "jsonref",  # OpenAPIServiceConnector, OpenAPIServiceToFunctions
   "openapi3",
 
-  # JsonSchemaValidator, Tool
-  "jsonschema",
-
   # Tracing
   "opentelemetry-sdk",
   "ddtrace",

releasenotes/notes/jsonschema-core-dependency-d38645d819eb0d2d.yaml

@@ -0,0 +1,4 @@
+---
+enhancements:
+  - |
+    Add jsonschema library as a core dependency. It is used in Tool and JsonSchemaValidator.