forked from kubeflow/pipelines
/
template_util.go
60 lines (54 loc) · 1.92 KB
/
template_util.go
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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package util
import (
"encoding/json"
"github.com/argoproj/argo/pkg/apis/workflow/v1alpha1"
"github.com/ghodss/yaml"
)
const (
argoVersion = "argoproj.io/v1alpha1"
argoK8sResource = "Workflow"
)
func GetParameters(template []byte) (string, error) {
wf, err := ValidateWorkflow(template)
if err != nil {
return "", Wrap(err, "Failed to get parameters from the workflow")
}
if wf.Spec.Arguments.Parameters == nil {
return "[]", nil
}
paramBytes, err := json.Marshal(wf.Spec.Arguments.Parameters)
if err != nil {
return "", NewInvalidInputErrorWithDetails(err, "Failed to marshal the parameter.")
}
if len(paramBytes) > MaxParameterBytes {
return "", NewInvalidInputError("The input parameter length exceed maximum size of %v.", MaxParameterBytes)
}
return string(paramBytes), nil
}
func ValidateWorkflow(template []byte) (*v1alpha1.Workflow, error) {
var wf v1alpha1.Workflow
err := yaml.Unmarshal(template, &wf)
if err != nil {
return nil, NewInvalidInputErrorWithDetails(err, "Failed to parse the parameter.")
}
if wf.APIVersion != argoVersion {
return nil, NewInvalidInputError("Unsupported argo version. Expected: %v. Received: %v", argoVersion, wf.APIVersion)
}
if wf.Kind != argoK8sResource {
return nil, NewInvalidInputError("Unexpected resource type. Expected: %v. Received: %v", argoK8sResource, wf.Kind)
}
return &wf, nil
}