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add.go
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add.go
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/*******************************************************************************
* Copyright 2019 Dell 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 addressable
import (
"fmt"
"github.com/edgexfoundry/edgex-go/internal/core/metadata/errors"
"github.com/edgexfoundry/edgex-go/internal/pkg/db"
contract "github.com/edgexfoundry/go-mod-core-contracts/models"
)
type AddExecutor interface {
Execute() (string, error)
}
type addressAdd struct {
database AddressWriter
addressable contract.Addressable
}
// This method adds the provided Addressable to the database.
func (op addressAdd) Execute() (id string, err error) {
if len(op.addressable.Name) == 0 {
err := errors.NewErrEmptyAddressableName()
return "", err
}
id, err = op.database.AddAddressable(op.addressable)
if err != nil {
if err == db.ErrNotUnique {
err = errors.NewErrDuplicateName(fmt.Sprintf("duplicate name for addressable: %s", op.addressable.Name))
}
return "", err
}
return id, nil
}
// This factory method returns an executor used to add an addressable.
func NewAddExecutor(db AddressWriter, addressable contract.Addressable) AddExecutor {
return addressAdd{
database: db,
addressable: addressable,
}
}