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resources.go
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resources.go
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// Copyright 2022 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
//
// 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 bulkfhir
import (
"fmt"
"sync"
"google.golang.org/protobuf/proto"
apb "github.com/google/fhir/go/proto/google/fhir/proto/annotations_go_proto"
cpb "github.com/google/fhir/go/proto/google/fhir/proto/r4/core/codes_go_proto"
)
var (
resourceTypeCodeEnumToName = map[cpb.ResourceTypeCode_Value]string{}
resourceTypeCodeNameToEnum = map[string]cpb.ResourceTypeCode_Value{}
once = sync.Once{}
)
func computeMaps() error {
var err error
once.Do(func() {
values := cpb.ResourceTypeCode_INVALID_UNINITIALIZED.Descriptor().Values()
for i := 0; i < values.Len(); i++ {
val := values.Get(i)
enum := cpb.ResourceTypeCode_Value(val.Number())
if enum == cpb.ResourceTypeCode_INVALID_UNINITIALIZED {
continue
}
opts := val.Options()
if !proto.HasExtension(opts, apb.E_FhirOriginalCode) {
// Other than INVALID_UNINITIALIZED, all of the values in the
// ResourceTypeCode.Value enum should have the fhir_original_code option
// set.
err = fmt.Errorf("ResourceTypeCode.Value.%s has no fhir_original_code option", enum)
return
}
name := proto.GetExtension(opts, apb.E_FhirOriginalCode).(string)
resourceTypeCodeNameToEnum[name] = enum
resourceTypeCodeEnumToName[enum] = name
}
})
return err
}
// ResourceTypeCodeToName returns the FHIR resource name corresponding to the
// ResourceTypeCode.
func ResourceTypeCodeToName(val cpb.ResourceTypeCode_Value) (string, error) {
if err := computeMaps(); err != nil {
return "", err
}
if name, ok := resourceTypeCodeEnumToName[val]; ok {
return name, nil
}
return "", fmt.Errorf("ResourceTypeCode %s does not have a FHIR resource name", val)
}
// ResourceTypeCodeFromName returns the ResourceTypeCode for the given enum.
func ResourceTypeCodeFromName(name string) (cpb.ResourceTypeCode_Value, error) {
if err := computeMaps(); err != nil {
return cpb.ResourceTypeCode_INVALID_UNINITIALIZED, err
}
if enum, ok := resourceTypeCodeNameToEnum[name]; ok {
return enum, nil
}
return cpb.ResourceTypeCode_INVALID_UNINITIALIZED, fmt.Errorf("could not find a ResourceTypeCode with FHIR resource name %q", name)
}