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task_remove.go
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task_remove.go
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// Copyright 2013-2015 Aerospike, 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 aerospike
import (
"strings"
)
// RemoveTask is used to poll for UDF registration completion.
type RemoveTask struct {
*BaseTask
packageName string
}
// NewRemoveTask initializes a RemoveTask with fields needed to query server nodes.
func NewRemoveTask(cluster *Cluster, packageName string) *RemoveTask {
return &RemoveTask{
BaseTask: NewTask(cluster, false),
packageName: packageName,
}
}
// IsDone will query all nodes for task completion status.
func (tskr *RemoveTask) IsDone() (bool, error) {
command := "udf-list"
nodes := tskr.cluster.GetNodes()
done := false
for _, node := range nodes {
responseMap, err := RequestNodeInfo(node, command)
if err != nil {
return false, err
}
for _, response := range responseMap {
find := "filename=" + tskr.packageName
index := strings.Index(response, find)
if index >= 0 {
return false, nil
}
done = true
}
}
return done, nil
}
// OnComplete returns a channel that will be closed as soon as the task is finished.
// If an error is encountered during operation, an error will be sent on the channel.
func (tskr *RemoveTask) OnComplete() chan error {
return tskr.onComplete(tskr)
}