Example click API usage

core/dbt/cli/example.py

@@ -0,0 +1,25 @@
+import click
+import sys
+
+from dbt.cli.main import cli as dbt, deps
+
+
+def make_context(args):
+    try: 
+        ctx = dbt.make_context('dbt', args)
+    except click.exceptions.Exit:
+        exit()
+
+    ctx.invoked_subcommand = ctx.protected_args[0] if ctx.protected_args else None
+    return ctx
+
+# python core/dbt/cli/example.py
+# python core/dbt/cli/example.py --version
+# python core/dbt/cli/example.py deps --project-dir <project-dir-path>
+if __name__ == "__main__":
+    ctx = make_context(sys.argv[1:])
+    dbt.invoke(ctx)
+
+    # Skips group-level context setting
+    # dbt.commands['deps'].invoke(ctx)
+    # deps.invoke(ctx)

core/dbt/cli/flags.py

@@ -39,7 +39,7 @@ def assign_params(ctx):
             invoked_subcommand = getattr(import_module("dbt.cli.main"), ctx.invoked_subcommand)
             invoked_subcommand.allow_extra_args = True
             invoked_subcommand.ignore_unknown_options = True
-            invoked_subcommand_ctx = invoked_subcommand.make_context(None, sys.argv)
+            invoked_subcommand_ctx = invoked_subcommand.make_context(None, ctx.args or sys.argv)
             assign_params(invoked_subcommand_ctx)
 
         # Hard coded flags

core/dbt/cli/main.py

@@ -59,6 +59,14 @@ def cli(ctx, **kwargs):
     """
     ctx.obj = {}
     flags = Flags()
+
+    # Version info
+    if flags.VERSION:
+        click.echo(f"`version` called\n ctx.params: {pf(ctx.params)}")
+        return
+    else:
+        del ctx.params["version"]
+
     # Logging
     # N.B. Legacy logger is not supported
     setup_event_logger(
@@ -83,13 +91,6 @@ def cli(ctx, **kwargs):
     # Adapter management
     ctx.with_resource(adapter_management())
 
-    # Version info
-    if flags.VERSION:
-        click.echo(f"`version` called\n ctx.params: {pf(ctx.params)}")
-        return
-    else:
-        del ctx.params["version"]
-
 
 # dbt build
 @cli.command("build")