feat(ui): Inject Custom CSS

api/jsonschema/schema.json

@@ -3661,6 +3661,14 @@
       ],
       "type": "object"
     },
+    "io.argoproj.workflow.v1alpha1.GetSettingsResponse": {
+      "properties": {
+        "uiCssURL": {
+          "type": "string"
+        }
+      },
+      "type": "object"
+    },
     "io.argoproj.workflow.v1alpha1.GetUserInfoResponse": {
       "properties": {
         "email": {

api/openapi-spec/swagger.json

@@ -1471,6 +1471,28 @@
         }
       }
     },
+    "/api/v1/settings": {
+      "get": {
+        "tags": [
+          "InfoService"
+        ],
+        "operationId": "InfoService_GetSettings",
+        "responses": {
+          "200": {
+            "description": "A successful response.",
+            "schema": {
+              "$ref": "#/definitions/io.argoproj.workflow.v1alpha1.GetSettingsResponse"
+            }
+          },
+          "default": {
+            "description": "An unexpected error response.",
+            "schema": {
+              "$ref": "#/definitions/grpc.gateway.runtime.Error"
+            }
+          }
+        }
+      }
+    },
     "/api/v1/stream/event-sources/{namespace}": {
       "get": {
         "tags": [
@@ -7090,6 +7112,14 @@
         }
       }
     },
+    "io.argoproj.workflow.v1alpha1.GetSettingsResponse": {
+      "type": "object",
+      "properties": {
+        "uiCssURL": {
+          "type": "string"
+        }
+      }
+    },
     "io.argoproj.workflow.v1alpha1.GetUserInfoResponse": {
       "type": "object",
       "properties": {

cmd/argo/commands/server.go

@@ -38,6 +38,7 @@ func NewServerCommand() *cobra.Command {
 		configMap                string
 		port                     int
 		baseHRef                 string
+		extraFilesDir            string
 		secure                   bool
 		htst                     bool
 		namespaced               bool   // --namespaced
@@ -92,6 +93,7 @@ See %s`, help.ArgoSever),
 				"namespace":        namespace,
 				"managedNamespace": managedNamespace,
 				"baseHRef":         baseHRef,
+				"extraFilesDir":    extraFilesDir,
 				"secure":           secure,
 			}).Info()
 
@@ -127,6 +129,7 @@ See %s`, help.ArgoSever),
 
 			opts := apiserver.ArgoServerOpts{
 				BaseHRef:                 baseHRef,
+				ExtraFilesDir:            extraFilesDir,
 				TLSConfig:                tlsConfig,
 				HSTS:                     htst,
 				Namespace:                namespace,
@@ -179,6 +182,7 @@ See %s`, help.ArgoSever),
 		defaultBaseHRef = "/"
 	}
 	command.Flags().StringVar(&baseHRef, "basehref", defaultBaseHRef, "Value for base href in index.html. Used if the server is running behind reverse proxy under subpath different from /. Defaults to the environment variable BASE_HREF.")
+	command.Flags().StringVar(&extraFilesDir, "extra-files-dir", "", "Value to serve files from a specified directory. Defaults no serve.")
 	// "-e" for encrypt, like zip
 	// We default to secure mode if we find certs available, otherwise we default to insecure mode.
 	_, err := os.Stat("argo-server.crt")

config/config.go

@@ -124,6 +124,9 @@ type Config struct {
 	// The command/args for each image, needed when the command is not specified and the emissary executor is used.
 	// https://argoproj.github.io/argo-workflows/workflow-executors/#emissary-emissary
 	Images map[string]Image `json:"images,omitempty"`
+
+	// UiCssURL local or remote path to user-defined CSS to customize the UI.
+	UiCssURL string `json:"ui.cssurl,omitempty"`
 }
 
 func (c Config) GetContainerRuntimeExecutor(labels labels.Labels) (string, error) {

docs/cli/argo_server.md

@@ -27,6 +27,7 @@ See https://argoproj.github.io/argo-workflows/argo-server.md
       --configmap string                     Name of K8s configmap to retrieve workflow controller configuration (default "workflow-controller-configmap")
       --event-operation-queue-size int       how many events operations that can be queued at once (default 16)
       --event-worker-count int               how many event workers to run (default 4)
+      --extra-files-dir string               Value to serve files from a specified directory. Defaults no serve.
   -h, --help                                 help for server
       --hsts                                 Whether or not we should add a HTTP Secure Transport Security header. This only has effect if secure is enabled. (default true)
       --log-format string                    The formatter to use for logs. One of: text|json (default "text")

pkg/apiclient/http1/info-service-client.go

@@ -25,3 +25,8 @@ func (h InfoServiceClient) GetUserInfo(_ context.Context, in *infopkg.GetUserInf
 	out := &infopkg.GetUserInfoResponse{}
 	return out, h.Get(in, out, "/api/v1/userinfo")
 }
+
+func (h InfoServiceClient) GetSettings(_ context.Context, in *infopkg.GetSettingsRequest, _ ...grpc.CallOption) (*infopkg.GetSettingsResponse, error) {
+	out := &infopkg.GetSettingsResponse{}
+	return out, h.Get(in, out, "/api/v1/settings")
+}