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device.go
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device.go
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/*******************************************************************************
* Copyright 2018 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 data
import (
"context"
"github.com/edgexfoundry/edgex-go/internal/core/data/config"
"github.com/edgexfoundry/edgex-go/internal/pkg/db"
"github.com/edgexfoundry/go-mod-core-contracts/clients/logger"
"github.com/edgexfoundry/go-mod-core-contracts/clients/metadata"
)
// Update when the device was last reported connected
func updateDeviceLastReportedConnected(
device string,
lc logger.LoggingClient,
mdc metadata.DeviceClient,
configuration *config.ConfigurationStruct) {
// Config set to skip update last reported
if !configuration.Writable.DeviceUpdateLastConnected {
lc.Debug("Skipping update of device connected/reported times for: " + device)
return
}
d, err := mdc.CheckForDevice(context.Background(), device)
if err != nil {
lc.Error("Error getting device " + device + ": " + err.Error())
return
}
// Couldn't find device
if len(d.Name) == 0 {
lc.Error("Error updating device connected/reported times. Unknown device with identifier of: " + device)
return
}
t := db.MakeTimestamp()
// Found device, now update lastReported
// Use of context.Background because this function is invoked asynchronously from a channel
err = mdc.UpdateLastConnectedByName(context.Background(), d.Name, t)
if err != nil {
lc.Error("Problems updating last connected value for device: " + d.Name)
return
}
err = mdc.UpdateLastReportedByName(context.Background(), d.Name, t)
if err != nil {
lc.Error("Problems updating last reported value for device: " + d.Name)
}
return
}
// Update when the device service was last reported connected
func updateDeviceServiceLastReportedConnected(
device string,
lc logger.LoggingClient,
mdc metadata.DeviceClient,
msc metadata.DeviceServiceClient,
configuration *config.ConfigurationStruct) {
if !configuration.Writable.ServiceUpdateLastConnected {
lc.Debug("Skipping update of device service connected/reported times for: " + device)
return
}
t := db.MakeTimestamp()
// Get the device
d, err := mdc.CheckForDevice(context.Background(), device)
if err != nil {
lc.Error("Error getting device " + device + ": " + err.Error())
return
}
// Couldn't find device
if len(d.Name) == 0 {
lc.Error("Error updating device connected/reported times. Unknown device with identifier of: " + device)
return
}
// Get the device service
s := d.Service
if &s == nil {
lc.Error("Error updating device service connected/reported times. Unknown device service in device: " + d.Name)
return
}
// Use of context.Background because this function is invoked asynchronously from a channel
_ = msc.UpdateLastConnected(context.Background(), s.Id, t)
_ = msc.UpdateLastReported(context.Background(), s.Id, t)
}
func checkDevice(
device string,
ctx context.Context,
mdc metadata.DeviceClient,
configuration *config.ConfigurationStruct) error {
if configuration.Writable.MetaDataCheck {
_, err := mdc.CheckForDevice(ctx, device)
if err != nil {
return err
}
}
return nil
}