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trash.go
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trash.go
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// Copyright 2018 StreamSets 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 trash
import (
"encoding/json"
log "github.com/sirupsen/logrus"
"github.com/streamsets/datacollector-edge/api"
"github.com/streamsets/datacollector-edge/api/validation"
"github.com/streamsets/datacollector-edge/container/common"
"github.com/streamsets/datacollector-edge/stages/stagelibrary"
)
const (
LIBRARY = "streamsets-datacollector-basic-lib"
ERROR_STAGE_NAME = "com_streamsets_pipeline_stage_destination_devnull_ToErrorNullDTarget"
NULL_STAGE_NAME = "com_streamsets_pipeline_stage_destination_devnull_NullDTarget"
STATS_NULL_STAGE_NAME = "com_streamsets_pipeline_stage_destination_devnull_StatsNullDTarget"
STATS_DPM_DIRECTLY_STAGE_NAME = "com_streamsets_pipeline_stage_destination_devnull_StatsDpmDirectlyDTarget"
)
type TrashDestination struct {
*common.BaseStage
}
func init() {
stagelibrary.SetCreator(LIBRARY, ERROR_STAGE_NAME, func() api.Stage {
return &TrashDestination{BaseStage: &common.BaseStage{}}
})
stagelibrary.SetCreator(LIBRARY, NULL_STAGE_NAME, func() api.Stage {
return &TrashDestination{BaseStage: &common.BaseStage{}}
})
stagelibrary.SetCreator(LIBRARY, STATS_NULL_STAGE_NAME, func() api.Stage {
return &TrashDestination{BaseStage: &common.BaseStage{}}
})
stagelibrary.SetCreator(LIBRARY, STATS_DPM_DIRECTLY_STAGE_NAME, func() api.Stage {
return &TrashDestination{BaseStage: &common.BaseStage{}}
})
}
func (t *TrashDestination) Init(stageContext api.StageContext) []validation.Issue {
return t.BaseStage.Init(stageContext)
}
func (t *TrashDestination) Write(batch api.Batch) error {
for _, record := range batch.GetRecords() {
recordValue, _ := record.Get()
jsonValue, err := json.Marshal(recordValue.Value)
if err != nil {
log.WithError(err).Error("Json Serialization Error")
t.GetStageContext().ToError(err, record)
}
log.WithField("record", string(jsonValue)).Debug("Trashed record")
}
return nil
}