forward port of native GCS support to argo 2.2

api/openapi-spec/swagger.json

@@ -58,6 +58,10 @@
           "description": "From allows an artifact to reference an artifact from a previous step",
           "type": "string"
         },
+        "gcs": {
+          "description": "GCS contains GCS artifact location details",
+          "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.GCSArtifact"
+        },
         "git": {
           "description": "Git contains git artifact location details",
           "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.GitArtifact"
@@ -104,6 +108,10 @@
           "description": "Artifactory contains artifactory artifact location details",
           "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.ArtifactoryArtifact"
         },
+        "gcs": {
+          "description": "GCS contains GCS artifact location details",
+          "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.GCSArtifact"
+        },
         "git": {
           "description": "Git contains git artifact location details",
           "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.GitArtifact"
@@ -221,6 +229,32 @@
         }
       }
     },
+    "io.argoproj.workflow.v1alpha1.GCSArtifact": {
+      "description": "GCSArtifact is the location of a GCS artifact",
+      "required": [
+        "bucket",
+        "key"
+      ],
+      "properties": {
+        "bucket": {
+          "type": "string"
+        },
+        "key": {
+          "type": "string"
+        }
+      }
+    },
+    "io.argoproj.workflow.v1alpha1.GCSBucket": {
+      "description": "GCSBucket contains the access information required for acting with a GCS bucket",
+      "required": [
+        "bucket"
+      ],
+      "properties": {
+        "bucket": {
+          "type": "string"
+        }
+      }
+    },
     "io.argoproj.workflow.v1alpha1.GitArtifact": {
       "description": "GitArtifact is the location of an git artifact",
       "required": [

pkg/apis/workflow/v1alpha1/types.go

@@ -318,6 +318,9 @@ type ArtifactLocation struct {
 
 	// Raw contains raw artifact location details
 	Raw *RawArtifact `json:"raw,omitempty"`
+
+	// GCS contains GCS artifact location details
+	GCS *GCSArtifact `json:"gcs,omitempty"`
 }
 
 // Outputs hold parameters, artifacts, and results from a step
@@ -594,6 +597,21 @@ func (s *S3Artifact) String() string {
 	return fmt.Sprintf("%s://%s/%s/%s", protocol, s.Endpoint, s.Bucket, s.Key)
 }
 
+// GCSBucket contains the access information required for acting with a GCS bucket
+type GCSBucket struct {
+	Bucket string `json:"bucket"`
+}
+
+// GCSArtifact is the location of a GCS artifact
+type GCSArtifact struct {
+	GCSBucket `json:",inline"`
+	Key       string `json:"key"`
+}
+
+func (s *GCSArtifact) String() string {
+	return fmt.Sprintf("gs://%s/%s", s.Bucket, s.Key)
+}
+
 // GitArtifact is the location of an git artifact
 type GitArtifact struct {
 	// Repo is the git repository
@@ -818,7 +836,7 @@ func (args *Arguments) GetParameterByName(name string) *Parameter {
 
 // HasLocation whether or not an artifact has a location defined
 func (a *Artifact) HasLocation() bool {
-	return a.S3 != nil || a.Git != nil || a.HTTP != nil || a.Artifactory != nil || a.Raw != nil
+	return a.S3 != nil || a.Git != nil || a.HTTP != nil || a.Artifactory != nil || a.Raw != nil || a.GCS != nil
 }
 
 // GetTemplate retrieves a defined template by its name