initial commit [ci skip]

engine/resource/lookup.go

@@ -0,0 +1,24 @@
+// Copyright 2019 Drone.IO Inc. All rights reserved.
+// Use of this source code is governed by the Polyform License
+// that can be found in the LICENSE file.
+
+package resource
+
+import (
+	"errors"
+
+	"github.com/drone/runner-go/manifest"
+)
+
+// Lookup returns the named pipeline from the Manifest.
+func Lookup(name string, manifest *manifest.Manifest) (*Pipeline, error) {
+	for _, resource := range manifest.Resources {
+		if resource.GetName() != name {
+			continue
+		}
+		if pipeline, ok := resource.(*Pipeline); ok {
+			return pipeline, nil
+		}
+	}
+	return nil, errors.New("resource not found")
+}