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add.go
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add.go
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/*******************************************************************************
* Copyright 2019 VMware 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 intervalaction
import (
"github.com/edgexfoundry/edgex-go/internal/support/scheduler/errors"
contract "github.com/edgexfoundry/go-mod-core-contracts/models"
)
type AddExecutor interface {
Execute() (string, error)
}
type intervalActionAdd struct {
database IntervalActionWriter
intervalAction contract.IntervalAction
scClient SchedulerQueueWriter
}
// This method adds the provided Addressable to the database.
func (op intervalActionAdd) Execute() (id string, err error) {
newId, err := addNewIntervalAction(op)
if err != nil {
return newId, err
}
return newId, nil
}
// This factory method returns an executor used to add an addressable.
func NewAddExecutor(db IntervalActionWriter, scClient SchedulerQueueWriter, intervalAction contract.IntervalAction) AddExecutor {
return intervalActionAdd{
database: db,
scClient: scClient,
intervalAction: intervalAction,
}
}
func addNewIntervalAction(iaa intervalActionAdd) (string, error) {
name := iaa.intervalAction.Name
// Validate the IntervalAction is not in use
ret, err := iaa.database.IntervalActionByName(name)
if err == nil && ret.Name == name {
return "", errors.NewErrIntervalActionNameInUse(name)
}
// Validate the Target
target := iaa.intervalAction.Target
if target == "" {
return "", errors.NewErrIntervalActionTargetNameRequired(iaa.intervalAction.ID)
}
// Validate the Interval
interval := iaa.intervalAction.Interval
if interval != "" {
_, err := iaa.database.IntervalByName(interval)
if err != nil {
return "", errors.NewErrIntervalNotFound(interval)
}
} else {
return "", errors.NewErrIntervalNotFound(iaa.intervalAction.ID)
}
// Validate the IntervalAction does not exist in the scheduler queue
retQ, err := iaa.scClient.QueryIntervalActionByName(name)
if err == nil && retQ.Name == name {
return "", errors.NewErrIntervalActionNameInUse(name)
}
// Add the new Interval Action to the database
ID, err := iaa.database.AddIntervalAction(iaa.intervalAction)
if err != nil {
return "", err
}
iaa.intervalAction.ID = ID
// Add the new IntervalAction into scheduler queue
err = iaa.scClient.AddIntervalActionToQueue(iaa.intervalAction)
if err != nil {
return "", err
}
return ID, nil
}