From 93090e3b08894faa00eca39a8a625473df82e01e Mon Sep 17 00:00:00 2001
From: anakin87 <stefanofiorucci@gmail.com>
Date: Mon, 20 Jan 2025 18:57:41 +0100
Subject: [PATCH 1/2] add jsonschema to core dependencies

---
 haystack/components/validators/json_schema.py | 7 ++-----
 haystack/tools/tool.py                        | 9 +++------
 pyproject.toml                                | 4 +---
 3 files changed, 6 insertions(+), 14 deletions(-)

diff --git a/haystack/components/validators/json_schema.py b/haystack/components/validators/json_schema.py
index 0a449aff42..051773113c 100644
--- a/haystack/components/validators/json_schema.py
+++ b/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
 
diff --git a/haystack/tools/tool.py b/haystack/tools/tool.py
index bdb8f005b6..fd4802879f 100644
--- a/haystack/tools/tool.py
+++ b/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)
diff --git a/pyproject.toml b/pyproject.toml
index 258e4e2710..481f3546d9 100644
--- a/pyproject.toml
+++ b/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",

From 0ca872a4aecf02ab13d3bb496f457894c82c3f08 Mon Sep 17 00:00:00 2001
From: anakin87 <stefanofiorucci@gmail.com>
Date: Mon, 20 Jan 2025 18:59:54 +0100
Subject: [PATCH 2/2] release note

---
 .../notes/jsonschema-core-dependency-d38645d819eb0d2d.yaml    | 4 ++++
 1 file changed, 4 insertions(+)
 create mode 100644 releasenotes/notes/jsonschema-core-dependency-d38645d819eb0d2d.yaml

diff --git a/releasenotes/notes/jsonschema-core-dependency-d38645d819eb0d2d.yaml b/releasenotes/notes/jsonschema-core-dependency-d38645d819eb0d2d.yaml
new file mode 100644
index 0000000000..f8579ebcdd
--- /dev/null
+++ b/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.