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monitors.go
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/
monitors.go
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/**
* 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.
*/
// Collection of monitors to create synchronicity
package realis
import (
"fmt"
"github.com/rdelval/gorealis/gen-go/apache/aurora"
"github.com/rdelval/gorealis/response"
"os"
"time"
"github.com/pkg/errors"
)
type Monitor struct {
Client Realis
}
// Polls the scheduler every certain amount of time to see if the update has succeeded
func (m *Monitor) JobUpdate(updateKey aurora.JobUpdateKey, interval int, timeout int) bool {
updateQ := aurora.JobUpdateQuery{
Key: &updateKey,
Limit: 1,
}
for i := 0; i*interval <= timeout; i++ {
respDetail, err := m.Client.JobUpdateDetails(updateQ)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
updateDetail := response.JobUpdateDetails(respDetail)
if len(updateDetail) == 0 {
fmt.Println("No update found")
return false
}
status := updateDetail[0].Update.Summary.State.Status
if _, ok := aurora.ACTIVE_JOB_UPDATE_STATES[status]; !ok {
// Rolled forward is the only state in which an update has been successfully updated
// if we encounter an inactive state and it is not at rolled forward, update failed
if status == aurora.JobUpdateStatus_ROLLED_FORWARD {
fmt.Println("Update succeded")
return true
} else {
fmt.Println("Update failed")
return false
}
}
fmt.Println("Polling, update still active...")
time.Sleep(time.Duration(interval) * time.Second)
}
fmt.Println("Timed out")
return false
}
func (m *Monitor) Instances(key *aurora.JobKey, instances int32, interval int, timeout int) (bool, error) {
for i := 0; i*interval < timeout; i++ {
live, err := m.Client.GetInstanceIds(key, aurora.LIVE_STATES)
if err != nil {
return false, errors.Wrap(err, "Unable to communicate with Aurora")
}
if len(live) == int(instances) {
return true, nil
}
fmt.Println("Polling, instances running: ", len(live))
time.Sleep(time.Duration(interval) * time.Second)
}
fmt.Println("Timed out")
return false, nil
}