/
resource.go
91 lines (78 loc) · 2.38 KB
/
resource.go
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// Copyright 2020 Red Hat, Inc.
//
// 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
//
// http://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 types
import (
"net/url"
"github.com/coreos/ignition/v2/config/shared/errors"
"github.com/coreos/ignition/v2/config/util"
"github.com/coreos/vcontext/path"
"github.com/coreos/vcontext/report"
)
func (res Resource) Key() string {
if res.Source == nil {
return ""
}
return *res.Source
}
func (res Resource) Validate(c path.ContextPath) (r report.Report) {
r.AddOnError(c.Append("compression"), res.validateCompression())
r.AddOnError(c.Append("verification", "hash"), res.validateVerification())
r.AddOnError(c.Append("source"), validateURLNilOK(res.Source))
r.AddOnError(c.Append("httpHeaders"), res.validateSchemeForHTTPHeaders())
return
}
func (res Resource) validateCompression() error {
if res.Compression != nil {
switch *res.Compression {
case "", "gzip":
default:
return errors.ErrCompressionInvalid
}
}
return nil
}
func (res Resource) validateVerification() error {
if res.Verification.Hash != nil && res.Source == nil {
return errors.ErrVerificationAndNilSource
}
return nil
}
func (res Resource) validateSchemeForHTTPHeaders() error {
if len(res.HTTPHeaders) < 1 {
return nil
}
if util.NilOrEmpty(res.Source) {
return errors.ErrInvalidUrl
}
u, err := url.Parse(*res.Source)
if err != nil {
return errors.ErrInvalidUrl
}
switch u.Scheme {
case "http", "https":
return nil
default:
return errors.ErrUnsupportedSchemeForHTTPHeaders
}
}
// Ensure that the Source is specified and valid. This is not called by
// Resource.Validate() because some structs that embed Resource don't
// require Source to be specified. Containing structs that require Source
// should call this function from their Validate().
func (res Resource) validateRequiredSource() error {
if util.NilOrEmpty(res.Source) {
return errors.ErrSourceRequired
}
return validateURL(*res.Source)
}