chore: loosen static validation when using dynamic parameters (#17516)

Co-authored-by: Steven Masley <stevenmasley@gmail.com>

coderd/apidoc/docs.go

@@ -11453,6 +11453,9 @@ const docTemplate = `{
                 "autostart_schedule": {
                     "type": "string"
                 },
+                "enable_dynamic_parameters": {
+                    "type": "boolean"
+                },
                 "name": {
                     "type": "string"
                 },

coderd/apidoc/swagger.json

@@ -10211,6 +10211,9 @@
 				"autostart_schedule": {
 					"type": "string"
 				},
+				"enable_dynamic_parameters": {
+					"type": "boolean"
+				},
 				"name": {
 					"type": "string"
 				},

coderd/workspaces.go

@@ -676,6 +676,9 @@ func createWorkspace(
 		if req.TemplateVersionID != uuid.Nil {
 			builder = builder.VersionID(req.TemplateVersionID)
 		}
+		if req.EnableDynamicParameters && api.Experiments.Enabled(codersdk.ExperimentDynamicParameters) {
+			builder = builder.UsingDynamicParameters()
+		}
 
 		workspaceBuild, provisionerJob, provisionerDaemons, err = builder.Build(
 			ctx,

coderd/wsbuilder/wsbuilder.go

@@ -51,10 +51,11 @@ type Builder struct {
 	logLevel         string
 	deploymentValues *codersdk.DeploymentValues
 
-	richParameterValues     []codersdk.WorkspaceBuildParameter
-	initiator               uuid.UUID
-	reason                  database.BuildReason
-	templateVersionPresetID uuid.UUID
+	richParameterValues      []codersdk.WorkspaceBuildParameter
+	dynamicParametersEnabled bool
+	initiator                uuid.UUID
+	reason                   database.BuildReason
+	templateVersionPresetID  uuid.UUID
 
 	// used during build, makes function arguments less verbose
 	ctx   context.Context
@@ -178,6 +179,11 @@ func (b Builder) MarkPrebuild() Builder {
 	return b
 }
 
+func (b Builder) UsingDynamicParameters() Builder {
+	b.dynamicParametersEnabled = true
+	return b
+}
+
 // SetLastWorkspaceBuildInTx prepopulates the Builder's cache with the last workspace build.  This allows us
 // to avoid a repeated database query when the Builder's caller also needs the workspace build, e.g. auto-start &
 // auto-stop.
@@ -578,6 +584,7 @@ func (b *Builder) getParameters() (names, values []string, err error) {
 	if err != nil {
 		return nil, nil, BuildError{http.StatusBadRequest, "Unable to build workspace with unsupported parameters", err}
 	}
+
 	resolver := codersdk.ParameterResolver{
 		Rich: db2sdk.WorkspaceBuildParameters(lastBuildParameters),
 	}
@@ -586,16 +593,24 @@ func (b *Builder) getParameters() (names, values []string, err error) {
 		if err != nil {
 			return nil, nil, BuildError{http.StatusInternalServerError, "failed to convert template version parameter", err}
 		}
-		value, err := resolver.ValidateResolve(
-			tvp,
-			b.findNewBuildParameterValue(templateVersionParameter.Name),
-		)
-		if err != nil {
-			// At this point, we've queried all the data we need from the database,
-			// so the only errors are problems with the request (missing data, failed
-			// validation, immutable parameters, etc.)
-			return nil, nil, BuildError{http.StatusBadRequest, fmt.Sprintf("Unable to validate parameter %q", templateVersionParameter.Name), err}
+
+		var value string
+		if !b.dynamicParametersEnabled {
+			var err error
+			value, err = resolver.ValidateResolve(
+				tvp,
+				b.findNewBuildParameterValue(templateVersionParameter.Name),
+			)
+			if err != nil {
+				// At this point, we've queried all the data we need from the database,
+				// so the only errors are problems with the request (missing data, failed
+				// validation, immutable parameters, etc.)
+				return nil, nil, BuildError{http.StatusBadRequest, fmt.Sprintf("Unable to validate parameter %q", templateVersionParameter.Name), err}
+			}
+		} else {
+			value = resolver.Resolve(tvp, b.findNewBuildParameterValue(templateVersionParameter.Name))
 		}
+
 		names = append(names, templateVersionParameter.Name)
 		values = append(values, value)
 	}