Change YAML version exception into a warning

.github/utils/generate_json_schema.py

@@ -8,6 +8,4 @@
 sys.path.append(".")
 from haystack.nodes._json_schema import update_json_schema
 
-update_json_schema(
-    update_index=True, destination_path=Path(__file__).parent.parent.parent / "haystack" / "json-schemas"
-)
+update_json_schema(destination_path=Path(__file__).parent.parent.parent / "haystack" / "json-schemas")

docs/_src/api/api/pipelines.md

@@ -83,7 +83,7 @@ Default value is True.
 ```python
 @classmethod
 @abstractmethod
-def load_from_config(cls, pipeline_config: Dict, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True)
+def load_from_config(cls, pipeline_config: Dict, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True, strict_version_check: bool = False)
 ```
 
 Load Pipeline from a config dict defining the individual components and how they're tied together to form
@@ -132,6 +132,7 @@ Here's a sample configuration:
 to change index name param for an ElasticsearchDocumentStore, an env
 variable 'MYDOCSTORE_PARAMS_INDEX=documents-2021' can be set. Note that an
 `_` sign must be used to specify nested hierarchical properties.
+- `strict_version_check`: whether to fail in case of a version mismatch (throws a warning otherwise)
 
 <a id="base.BasePipeline.load_from_yaml"></a>
 
@@ -561,7 +562,7 @@ Create a Graphviz visualization of the pipeline.
 
 ```python
 @classmethod
-def load_from_yaml(cls, path: Path, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True)
+def load_from_yaml(cls, path: Path, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True, strict_version_check: bool = False)
 ```
 
 Load Pipeline from a YAML file defining the individual components and how they're tied together to form
@@ -610,14 +611,15 @@ If the pipeline loads correctly regardless, save again the pipeline using `Pipel
 to change index name param for an ElasticsearchDocumentStore, an env
 variable 'MYDOCSTORE_PARAMS_INDEX=documents-2021' can be set. Note that an
 `_` sign must be used to specify nested hierarchical properties.
+- `strict_version_check`: whether to fail in case of a version mismatch (throws a warning otherwise)
 
 <a id="base.Pipeline.load_from_config"></a>
 
 #### load\_from\_config
 
 ```python
 @classmethod
-def load_from_config(cls, pipeline_config: Dict, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True)
+def load_from_config(cls, pipeline_config: Dict, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True, strict_version_check: bool = False)
 ```
 
 Load Pipeline from a config dict defining the individual components and how they're tied together to form
@@ -666,6 +668,7 @@ Here's a sample configuration:
 to change index name param for an ElasticsearchDocumentStore, an env
 variable 'MYDOCSTORE_PARAMS_INDEX=documents-2021' can be set. Note that an
 `_` sign must be used to specify nested hierarchical properties.
+- `strict_version_check`: whether to fail in case of a version mismatch (throws a warning otherwise).
 
 <a id="base.Pipeline.save_to_yaml"></a>
 
@@ -769,7 +772,7 @@ def __init__(address: str = None, **kwargs)
 
 ```python
 @classmethod
-def load_from_yaml(cls, path: Path, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True, address: Optional[str] = None, **kwargs, ,)
+def load_from_yaml(cls, path: Path, pipeline_name: Optional[str] = None, overwrite_with_env_variables: bool = True, address: Optional[str] = None, strict_version_check: bool = False, **kwargs, ,)
 ```
 
 Load Pipeline from a YAML file defining the individual components and how they're tied together to form

docs/_src/tutorials/tutorials/8.md

@@ -37,7 +37,7 @@ This tutorial will show you all the tools that Haystack provides to help you cas
 !pip install git+https://github.com/deepset-ai/haystack.git#egg=farm-haystack[colab,ocr]
 
 # For Colab/linux based machines
-!wget --no-check-certificate https://dl.xpdfreader.com/xpdf-tools-linux-4.03.tar.gz
+!wget --no-check-certificate https://dl.xpdfreader.com/xpdf-tools-linux-4.04.tar.gz
 !tar -xvf xpdf-tools-linux-4.03.tar.gz && sudo cp xpdf-tools-linux-4.03/bin64/pdftotext /usr/local/bin
 
 # For Macos machines

haystack/json-schemas/haystack-pipeline-1.0.0.schema.json

@@ -9,17 +9,7 @@
       "title": "Version",
       "description": "Version of the Haystack Pipeline file.",
       "type": "string",
-      "oneOf": [
-        {
-          "const": "1.0.0"
-        },
-        {
-          "const": "1.1.0"
-        },
-        {
-          "const": "1.2.0"
-        }
-      ]
+      "const": "1.0.0"
     },
     "components": {
       "title": "Components",