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destination.go
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destination.go
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// Copyright © 2024 Meroxa, 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 pulsar
import (
"context"
"fmt"
"github.com/apache/pulsar-client-go/pulsar"
"github.com/apache/pulsar-client-go/pulsar/log"
sdk "github.com/conduitio/conduit-connector-sdk"
)
type Destination struct {
sdk.UnimplementedDestination
client pulsar.Client
producer pulsar.Producer
config DestinationConfig
}
func NewDestination() sdk.Destination {
return sdk.DestinationWithMiddleware(&Destination{}, sdk.DefaultDestinationMiddleware()...)
}
func (d *Destination) Parameters() map[string]sdk.Parameter {
return d.config.Parameters()
}
func (d *Destination) Configure(_ context.Context, cfg map[string]string) error {
if err := sdk.Util.ParseConfig(cfg, &d.config); err != nil {
return fmt.Errorf("failed to parse config: %w", err)
}
return nil
}
func (d *Destination) Open(ctx context.Context) (err error) {
var logger log.Logger
if d.config.disableLogging {
logger = log.DefaultNopLogger()
}
d.client, err = pulsar.NewClient(pulsar.ClientOptions{
URL: d.config.URL,
ConnectionTimeout: d.config.ConnectionTimeout,
OperationTimeout: d.config.OperationTimeout,
MaxConnectionsPerBroker: d.config.MaxConnectionsPerBroker,
MemoryLimitBytes: d.config.MemoryLimitBytes,
EnableTransaction: d.config.EnableTransaction,
TLSKeyFilePath: d.config.TLSKeyFilePath,
TLSCertificateFile: d.config.TLSCertificateFile,
TLSTrustCertsFilePath: d.config.TLSTrustCertsFilePath,
TLSAllowInsecureConnection: d.config.TLSAllowInsecureConnection,
TLSValidateHostname: d.config.TLSValidateHostname,
Logger: logger,
})
if err != nil {
return fmt.Errorf("failed to create client: %w", err)
}
sdk.Logger(ctx).Info().Msg("created destination client")
d.producer, err = d.client.CreateProducer(pulsar.ProducerOptions{
Topic: d.config.Topic,
// SendTimeout set to -1 disables the timeout to prevent acceptance
// tests to detect leaking goroutines.
// TODO: it might be better for this to be configurable (issue #9)
SendTimeout: -1,
})
if err != nil {
return fmt.Errorf("failed to create producer: %w", err)
}
sdk.Logger(ctx).Info().Msg("created destination producer")
return nil
}
func (d *Destination) Write(ctx context.Context, records []sdk.Record) (int, error) {
var written int
for _, record := range records {
key := string(record.Key.Bytes())
_, err := d.producer.Send(ctx, &pulsar.ProducerMessage{
Payload: record.Bytes(),
Key: key,
})
if err != nil {
return written, fmt.Errorf("failed to send message: %w", err)
}
sdk.Logger(ctx).Trace().
Str("topic", d.config.Topic).
Str("key", key).Msg("sent message")
written++
}
sdk.Logger(ctx).Trace().Int("total", written).Msg("wrote messages to destination")
return written, nil
}
func (d *Destination) Teardown(ctx context.Context) error {
if d.producer != nil {
d.producer.Close()
}
if d.client != nil {
d.client.Close()
}
sdk.Logger(ctx).Debug().Msg("destination teardown complete")
return nil
}