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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 command
import (
"fmt"
"github.com/edgexfoundry/edgex-go/internal/core/metadata/errors"
"github.com/edgexfoundry/edgex-go/internal/pkg/db"
bootstrapConfig "github.com/edgexfoundry/go-mod-bootstrap/config"
contract "github.com/edgexfoundry/go-mod-core-contracts/models"
)
//Get commands by device id
type DeviceIdExecutor interface {
Execute() ([]contract.Command, error)
}
type commandLoadByDeviceId struct {
database CommandLoader
deviceId string
}
func NewDeviceIdExecutor(db CommandLoader, deviceId string) DeviceIdExecutor {
return commandLoadByDeviceId{database: db, deviceId: deviceId}
}
func (op commandLoadByDeviceId) Execute() (commands []contract.Command, err error) {
return op.database.GetCommandsByDeviceId(op.deviceId)
}
//Get All commands
type CommandAllExecutor interface {
Execute() ([]contract.Command, error)
}
type commandLoadAll struct {
config bootstrapConfig.ServiceInfo
database CommandLoader
}
func NewCommandLoadAll(cfg bootstrapConfig.ServiceInfo, db CommandLoader) CommandAllExecutor {
return commandLoadAll{config: cfg, database: db}
}
func (op commandLoadAll) Execute() (cmds []contract.Command, err error) {
cmds, err = op.database.GetAllCommands()
if err != nil {
return
}
if len(cmds) > op.config.MaxResultCount {
err = errors.NewErrLimitExceeded(op.config.MaxResultCount)
return []contract.Command{}, err
}
return
}
//Get Command By ID
type CommandByIdExecutor interface {
Execute() (contract.Command, error)
}
type commandByIdLoader struct {
database CommandLoader
cid string
}
func NewCommandById(db CommandLoader, cid string) CommandByIdExecutor {
return commandByIdLoader{database: db, cid: cid}
}
func (op commandByIdLoader) Execute() (cmd contract.Command, err error) {
cmd, err = op.database.GetCommandById(op.cid)
if err != nil && err == db.ErrNotFound {
err = errors.NewErrItemNotFound(fmt.Sprintf("command with id %s not found", op.cid))
}
return
}
//Get Command By Name
type CommandsByNameExecutor interface {
Execute() ([]contract.Command, error)
}
type commandsByNameLoader struct {
database CommandLoader
cname string
}
func NewCommandsByName(db CommandLoader, cname string) CommandsByNameExecutor {
return commandsByNameLoader{database: db, cname: cname}
}
func (op commandsByNameLoader) Execute() (cmd []contract.Command, err error) {
return op.database.GetCommandsByName(op.cname)
}