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get.go
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get.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 device
import (
"github.com/edgexfoundry/edgex-go/internal/core/metadata/errors"
bootstrapConfig "github.com/edgexfoundry/go-mod-bootstrap/config"
"github.com/edgexfoundry/go-mod-core-contracts/clients/logger"
contract "github.com/edgexfoundry/go-mod-core-contracts/models"
)
type DeviceAllExecutor interface {
Execute() ([]contract.Device, error)
}
type deviceLoadAll struct {
config bootstrapConfig.ServiceInfo
database DeviceLoader
logger logger.LoggingClient
}
func NewDeviceLoadAll(cfg bootstrapConfig.ServiceInfo, db DeviceLoader, log logger.LoggingClient) DeviceAllExecutor {
return deviceLoadAll{config: cfg, database: db, logger: log}
}
func (op deviceLoadAll) Execute() (devices []contract.Device, err error) {
devices, err = op.database.GetAllDevices()
if err != nil {
op.logger.Error(err.Error())
return
}
if len(devices) > op.config.MaxResultCount {
err = errors.NewErrLimitExceeded(op.config.MaxResultCount)
return []contract.Device{}, err
}
return
}
// ProfileIdExecutor provides functionality for loading devices by way of the operator pattern.
type ProfileIdExecutor interface {
Execute() ([]contract.Device, error)
}
type deviceLoadByProfileId struct {
config bootstrapConfig.ServiceInfo
database DeviceLoader
profile string
logger logger.LoggingClient
}
// NewProfileIdExecutor creates a new ProfileIdExecutor
func NewProfileIdExecutor(cfg bootstrapConfig.ServiceInfo, db DeviceLoader, log logger.LoggingClient, profile string) ProfileIdExecutor {
return deviceLoadByProfileId{config: cfg, database: db, logger: log, profile: profile}
}
// Execute retrieves the devices associated with a profile ID
func (op deviceLoadByProfileId) Execute() (devices []contract.Device, err error) {
devices, err = op.database.GetDevicesByProfileId(op.profile)
if err != nil {
op.logger.Error(err.Error())
return
}
if len(devices) > op.config.MaxResultCount {
err = errors.NewErrLimitExceeded(op.config.MaxResultCount)
return []contract.Device{}, err
}
return
}