feat(sdk): Add load_component_from_spec. Fixes #5708 #3748 (#6690)

* add load_component_from_spec

* update release.md

* update RELEASE.md

* update RELEASE.md

sdk/RELEASE.md

@@ -66,6 +66,7 @@
 * Add v2 placeholder variables [\#6693](https://github.com/kubeflow/pipelines/pull/6693)
 * Add a new command in KFP's CLI, `components`, that enables users to manage and build
   v2 components in a container with Docker [\#6417](https://github.com/kubeflow/pipelines/pull/6417)
+* Add `load_component_from_spec` for SDK v1 which brings back the ability to build components directly in python, using `ComponentSpec` [\#6690](https://github.com/kubeflow/pipelines/pull/6690)
 
 ## Breaking Changes
 

sdk/python/kfp/components/_components.py

@@ -33,7 +33,7 @@
 _default_component_name = 'Component'
 
 
-def load_component(filename=None, url=None, text=None):
+def load_component(filename=None, url=None, text=None, component_spec=None):
     """Loads component from text, file or URL and creates a task factory
     function.
 
@@ -43,6 +43,7 @@ def load_component(filename=None, url=None, text=None):
         filename: Path of local file containing the component definition.
         url: The URL of the component file data.
         text: A string containing the component file data.
+        component_spec: A ComponentSpec containing the component definition.
 
     Returns:
         A factory function with a strongly-typed signature.
@@ -61,6 +62,8 @@ def load_component(filename=None, url=None, text=None):
         return load_component_from_url(url)
     elif text:
         return load_component_from_text(text)
+    elif component_spec:
+        return load_component_from_spec(component_spec)
     else:
         raise ValueError('Need to specify a source')
 
@@ -120,6 +123,22 @@ def load_component_from_text(text):
         component_spec=component_spec)
 
 
+def load_component_from_spec(component_spec):
+    """Loads component from a ComponentSpec and creates a task factory function.
+
+    Args:
+        component_spec: A ComponentSpec containing the component definition.
+
+    Returns:
+        A factory function with a strongly-typed signature.
+        Once called with the required arguments, the factory constructs a pipeline task instance (ContainerOp).
+    """
+    if component_spec is None:
+        raise TypeError
+    return _create_task_factory_from_component_spec(
+            component_spec=component_spec)
+
+
 def _fix_component_uri(uri: str) -> str:
     #Handling Google Cloud Storage URIs
     if uri.startswith('gs://'):