[App] Enable running an app from the Gallery

src/lightning_app/CHANGELOG.md

@@ -28,6 +28,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 - Added a `configure_layout` method to the `LightningWork` which can be used to control how the work is handled in the layout of a parent flow ([#15926](https://github.com/Lightning-AI/lightning/pull/15926))
 
+- Added the ability to run a Lightning App or Component directly from the Gallery using `lightning run app organization/name` ([#15941](https://github.com/Lightning-AI/lightning/pull/15941))
+
 
 ### Changed
 

src/lightning_app/cli/cmd_install.py

@@ -5,6 +5,7 @@
 import sys
 from typing import Dict, Optional, Tuple
 
+import click
 import requests
 from packaging.version import Version
 
@@ -14,7 +15,116 @@
 logger = Logger(__name__)
 
 
-def gallery_component(name: str, yes_arg: bool, version_arg: str, cwd: str = None) -> None:
+@click.group(name="install")
+def install() -> None:
+    """Install Lightning AI selfresources."""
+    pass
+
+
+@install.command("app")
+@click.argument("name", type=str)
+@click.option(
+    "--yes",
+    "-y",
+    is_flag=True,
+    help="disables prompt to ask permission to create env and run install cmds",
+)
+@click.option(
+    "--version",
+    "-v",
+    type=str,
+    help="Specify the version to install. By default it uses 'latest'",
+    default="latest",
+    show_default=True,
+)
+@click.option(
+    "--overwrite",
+    "-f",
+    is_flag=True,
+    default=False,
+    help="When set, overwrite the app directory without asking if it already exists.",
+)
+def install_app(name: str, yes: bool, version: str, overwrite: bool = False) -> None:
+    _install_app_command(name, yes, version, overwrite=overwrite)
+
+
+@install.command("component")
+@click.argument("name", type=str)
+@click.option(
+    "--yes",
+    "-y",
+    is_flag=True,
+    help="disables prompt to ask permission to create env and run install cmds",
+)
+@click.option(
+    "--version",
+    "-v",
+    type=str,
+    help="Specify the version to install. By default it uses 'latest'",
+    default="latest",
+    show_default=True,
+)
+def install_component(name: str, yes: bool, version: str) -> None:
+    _install_component_command(name, yes, version)
+
+
+def _install_app_command(name: str, yes: bool, version: str, overwrite: bool = False) -> None:
+    if "github.com" in name:
+        if version != "latest":
+            logger.warn(
+                f"The provided version {version} isn't the officially supported one. "
+                f"The provided version will be ignored."
+            )
+        return non_gallery_app(name, yes, overwrite=overwrite)
+    else:
+        return gallery_app(name, yes, version, overwrite=overwrite)
+
+
+def _install_component_command(name: str, yes: bool, version: str, overwrite: bool = False) -> None:
+    if "github.com" in name:
+        if version != "latest":
+            logger.warn(
+                f"The provided version {version} isn't the officially supported one. "
+                f"The provided version will be ignored."
+            )
+        return non_gallery_component(name, yes, overwrite=overwrite)
+    else:
+        return gallery_component(name, yes, version, overwrite=overwrite)
+
+
+def gallery_apps_and_components(
+    name: str, yes_arg: bool, version_arg: str, cwd: str = None, overwrite: bool = False
+) -> str:
+
+    # make sure org/app-name syntax is correct
+    org, app_or_component = _validate_name(name, resource_type="App OR Component", example="lightning/quick-start")
+
+    entry, kind = _resolve_entry(app_or_component, version_arg)
+
+    if kind == "app":
+        # give the user the chance to do a manual install
+        source_url, git_url, folder_name, git_sha = _show_install_app_prompt(
+            entry, app_or_component, org, yes_arg, resource_type="app"
+        )
+        # run installation if requested
+        _install_app_from_source(source_url, git_url, folder_name, cwd=cwd, overwrite=overwrite, git_sha=git_sha)
+
+        return os.path.join(os.getcwd(), folder_name, entry["appEntrypointFile"])
+
+    elif kind == "component":
+        # give the user the chance to do a manual install
+        git_url = _show_install_component_prompt(entry, app_or_component, org, yes_arg)
+
+        # run installation if requested
+        _install_component_from_source(git_url)
+
+        return os.path.join(os.getcwd(), entry["appEntrypointFile"])
+
+    else:
+        raise Exception(f"The provided {name} doesn't exist.")
+
+
+def gallery_component(name: str, yes_arg: bool, version_arg: str, cwd: str = None) -> str:
     # make sure org/component-name name is correct
     org, component = _validate_name(name, resource_type="component", example="lightning/LAI-slack-component")
 
@@ -28,7 +138,9 @@ def gallery_component(name: str, yes_arg: bool, version_arg: str, cwd: str = Non
     git_url = _show_install_component_prompt(component_entry, component, org, yes_arg)
 
     # run installation if requested
-    _install_component(git_url)
+    _install_component_from_source(git_url)
+
+    return os.path.join(os.getcwd(), component_entry["appEntrypointFile"])
 
 
 def non_gallery_component(gh_url: str, yes_arg: bool, cwd: str = None) -> None:
@@ -37,10 +149,10 @@ def non_gallery_component(gh_url: str, yes_arg: bool, cwd: str = None) -> None:
     git_url = _show_non_gallery_install_component_prompt(gh_url, yes_arg)
 
     # run installation if requested
-    _install_component(git_url)
+    _install_component_from_source(git_url)
 
 
-def gallery_app(name: str, yes_arg: bool, version_arg: str, cwd: str = None, overwrite: bool = False) -> None:
+def gallery_app(name: str, yes_arg: bool, version_arg: str, cwd: str = None, overwrite: bool = False) -> str:
 
     # make sure org/app-name syntax is correct
     org, app = _validate_name(name, resource_type="app", example="lightning/quick-start")
@@ -57,7 +169,9 @@ def gallery_app(name: str, yes_arg: bool, version_arg: str, cwd: str = None, ove
     )
 
     # run installation if requested
-    _install_app(source_url, git_url, folder_name, cwd=cwd, overwrite=overwrite, git_sha=git_sha)
+    _install_app_from_source(source_url, git_url, folder_name, cwd=cwd, overwrite=overwrite, git_sha=git_sha)
+
+    return os.path.join(os.getcwd(), folder_name, app_entry["appEntrypointFile"])
 
 
 def non_gallery_app(gh_url: str, yes_arg: bool, cwd: str = None, overwrite: bool = False) -> None:
@@ -66,7 +180,7 @@ def non_gallery_app(gh_url: str, yes_arg: bool, cwd: str = None, overwrite: bool
     repo_url, folder_name = _show_non_gallery_install_app_prompt(gh_url, yes_arg)
 
     # run installation if requested
-    _install_app(repo_url, repo_url, folder_name, cwd=cwd, overwrite=overwrite)
+    _install_app_from_source(repo_url, repo_url, folder_name, cwd=cwd, overwrite=overwrite)
 
 
 def _show_install_component_prompt(entry: Dict[str, str], component: str, org: str, yes_arg: bool) -> str:
@@ -299,6 +413,30 @@ def _validate_name(name: str, resource_type: str, example: str) -> Tuple[str, st
     return org, resource
 
 
+def _resolve_entry(name, version_arg) -> Tuple[Optional[Dict], Optional[str]]:
+    entry = None
+    kind = None
+
+    # resolve registry (orgs can have a private registry through their environment variables)
+    registry_url = _resolve_app_registry()
+
+    # load the app resource
+    entry = _resolve_resource(registry_url, name=name, version_arg=version_arg, resource_type="app")
+
+    if not entry:
+
+        registry_url = _resolve_component_registry()
+
+        # load the component resource
+        entry = _resolve_resource(registry_url, name=name, version_arg=version_arg, resource_type="component")
+        kind = "component" if entry else None
+
+    else:
+        kind = "app"
+
+    return entry, kind
+
+
 def _resolve_resource(registry_url: str, name: str, version_arg: str, resource_type: str) -> Dict[str, str]:
     gallery_entries = []
     try:
@@ -381,7 +519,7 @@ def _install_with_env(repo_url: str, folder_name: str, cwd: str = None) -> None:
     logger.info(m)
 
 
-def _install_app(
+def _install_app_from_source(
     source_url: str, git_url: str, folder_name: str, cwd: str = None, overwrite: bool = False, git_sha: str = None
 ) -> None:
     """Installing lighting app from the `git_url`
@@ -458,7 +596,7 @@ def _install_app(
     logger.info(m)
 
 
-def _install_component(git_url: str) -> None:
+def _install_component_from_source(git_url: str) -> None:
     logger.info("⚡ RUN: pip install")
 
     out = subprocess.check_output(["pip", "install", git_url])

src/lightning_app/cli/lightning_cli.py

@@ -232,7 +232,12 @@ def _run_app(
     secret: tuple,
     run_app_comment_commands: bool,
 ) -> None:
-    file = _prepare_file(file)
+
+    if not os.path.exists(file):
+        file = cmd_install.gallery_apps_and_components(file, True, "latest", overwrite=False)
+        if file is None:
+            raise Exception(f"The provided entrypoint {file} doesn't exist.")
+        run_app_comment_commands = True
 
     if not cloud and cluster_id is not None:
         raise click.ClickException("Using the flag --cluster-id in local execution is not supported.")
@@ -288,7 +293,7 @@ def run() -> None:
 
 
 @run.command("app")
-@click.argument("file", type=click.Path(exists=True))
+@click.argument("file", type=str)
 @click.option("--cloud", type=bool, default=False, is_flag=True)
 @click.option(
     "--cluster-id",
@@ -361,6 +366,7 @@ def run_app(
 _main.add_command(get_list)
 _main.add_command(delete)
 _main.add_command(create)
+_main.add_command(cmd_install.install)
 
 
 @_main.command("ssh")
@@ -444,74 +450,6 @@ def ssh(app_name: str = None, component_name: str = None) -> None:
     os.execv(ssh_path, ["-tt", f"{component_id}@{ssh_endpoint}"])
 
 
-@_main.group()
-def install() -> None:
-    """Install a Lightning App and/or component."""
-
-
-@install.command("app")
-@click.argument("name", type=str)
-@click.option(
-    "--yes",
-    "-y",
-    is_flag=True,
-    help="disables prompt to ask permission to create env and run install cmds",
-)
-@click.option(
-    "--version",
-    "-v",
-    type=str,
-    help="Specify the version to install. By default it uses 'latest'",
-    default="latest",
-    show_default=True,
-)
-@click.option(
-    "--overwrite",
-    "-f",
-    is_flag=True,
-    default=False,
-    help="When set, overwrite the app directory without asking if it already exists.",
-)
-def install_app(name: str, yes: bool, version: str, overwrite: bool = False) -> None:
-    if "github.com" in name:
-        if version != "latest":
-            logger.warn(
-                f"The provided version {version} isn't the officially supported one. "
-                f"The provided version will be ignored."
-            )
-        cmd_install.non_gallery_app(name, yes, overwrite=overwrite)
-    else:
-        cmd_install.gallery_app(name, yes, version, overwrite=overwrite)
-
-
-@install.command("component")
-@click.argument("name", type=str)
-@click.option(
-    "--yes",
-    "-y",
-    is_flag=True,
-    help="disables prompt to ask permission to create env and run install cmds",
-)
-@click.option(
-    "--version",
-    "-v",
-    type=str,
-    help="Specify the version to install. By default it uses 'latest'",
-    default="latest",
-    show_default=True,
-)
-def install_component(name: str, yes: bool, version: str) -> None:
-    if "github.com" in name:
-        if version != "latest":
-            logger.warn(
-                f"The provided version {version} isn't the officially supported one. "
-                f"The provided version will be ignored."
-            )
-        cmd_install.non_gallery_component(name, yes)
-    else:
-        cmd_install.gallery_component(name, yes, version)
-
-
 @_main.group()
 def init() -> None:
     """Init a Lightning App and/or component."""