vmware-go-kcl-v2/clientlibrary/worker/worker-custom.go
Tao Jiang 2ca82c25ca Add support for providing custom checkpointer (#17)
* Add credential configuration for resources

Add credentials for Kinesis, DynamoDB and Cloudwatch. See the worker_test.go
to see how to use it.

Signed-off-by: Tao Jiang <taoj@vmware.com>

* Add support for providing custom checkpointer

Provide a new constructor for adding checkpointer instead of alway using
default dynamodb checkpointer.

The next step is to abstract out the Kinesis into a generic stream API and
this will be bigger change and will be addressed in different PR.

Test:
  Use the new construtor to inject dynamodb checkpointer and run the existing
  tests.

Signed-off-by: Tao Jiang <taoj@vmware.com>

* Add support for providing custom checkpointer

Provide a new constructor for adding checkpointer instead of alway using
default dynamodb checkpointer.

The next step is to abstract out the Kinesis into a generic stream API and
this will be bigger change and will be addressed in different PR.

Fix checkfmt error.

Test:
  Use the new construtor to inject dynamodb checkpointer and run the existing
  tests.

Signed-off-by: Tao Jiang <taoj@vmware.com>
2021-12-20 21:21:14 -06:00

66 lines
2.6 KiB
Go

/*
* Copyright (c) 2019 VMware, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
* associated documentation files (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
* NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package worker
import (
log "github.com/sirupsen/logrus"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/kinesis"
chk "github.com/vmware/vmware-go-kcl/clientlibrary/checkpoint"
"github.com/vmware/vmware-go-kcl/clientlibrary/config"
kcl "github.com/vmware/vmware-go-kcl/clientlibrary/interfaces"
"github.com/vmware/vmware-go-kcl/clientlibrary/metrics"
)
// NewCustomWorker constructs a Worker instance for processing Kinesis stream data by directly inject custom cjheckpointer.
func NewCustomWorker(factory kcl.IRecordProcessorFactory, kclConfig *config.KinesisClientLibConfiguration,
checkpointer chk.Checkpointer, metricsConfig *metrics.MonitoringConfiguration) *Worker {
w := &Worker{
streamName: kclConfig.StreamName,
regionName: kclConfig.RegionName,
workerID: kclConfig.WorkerID,
processorFactory: factory,
kclConfig: kclConfig,
checkpointer: checkpointer,
metricsConfig: metricsConfig,
}
// create session for Kinesis
log.Info("Creating Kinesis session")
s, err := session.NewSession(&aws.Config{
Region: aws.String(w.regionName),
Endpoint: &kclConfig.KinesisEndpoint,
Credentials: kclConfig.KinesisCredentials,
})
if err != nil {
// no need to move forward
log.Fatalf("Failed in getting Kinesis session for creating Worker: %+v", err)
}
w.kc = kinesis.New(s)
if w.metricsConfig == nil {
// "" means noop monitor service. i.e. not emitting any metrics.
w.metricsConfig = &metrics.MonitoringConfiguration{MonitoringService: ""}
}
return w
}