mirror of
https://github.com/ossf/scorecard.git
synced 2024-09-19 21:18:09 +03:00
93 lines
2.2 KiB
Go
93 lines
2.2 KiB
Go
// Copyright 2021 Security Scorecard Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package pubsub
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"sync"
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"sync/atomic"
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"gocloud.dev/pubsub"
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// Needed to link in GCP drivers.
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_ "gocloud.dev/pubsub/gcppubsub"
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"google.golang.org/protobuf/encoding/protojson"
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"github.com/ossf/scorecard/cron/data"
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)
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var errorPublish = errors.New("total errors when publishing")
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type Publisher interface {
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Publish(request *data.ScorecardBatchRequest) error
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Close() error
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}
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func CreatePublisher(ctx context.Context, topicURL string) (Publisher, error) {
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ret := publisherImpl{}
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topic, err := pubsub.OpenTopic(ctx, topicURL)
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if err != nil {
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return &ret, fmt.Errorf("error from pubsub.OpenTopic: %w", err)
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}
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return &publisherImpl{
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ctx: ctx,
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topic: topic,
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}, nil
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}
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type sender interface {
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Send(ctx context.Context, msg *pubsub.Message) error
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}
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type publisherImpl struct {
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ctx context.Context
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topic sender
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wg sync.WaitGroup
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totalErrors uint64
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}
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func (publisher *publisherImpl) Publish(request *data.ScorecardBatchRequest) error {
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msg, err := protojson.Marshal(request)
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if err != nil {
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return fmt.Errorf("error from protojson.Marshal: %w", err)
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}
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publisher.wg.Add(1)
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go func() {
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defer publisher.wg.Done()
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err := publisher.topic.Send(publisher.ctx, &pubsub.Message{
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Body: msg,
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})
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if err != nil {
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log.Printf("Error when publishing message %s: %v", msg, err)
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atomic.AddUint64(&publisher.totalErrors, 1)
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return
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}
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log.Print("Successfully published message")
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}()
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return nil
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}
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func (publisher *publisherImpl) Close() error {
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publisher.wg.Wait()
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if publisher.totalErrors > 0 {
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return fmt.Errorf("%w: %d", errorPublish, publisher.totalErrors)
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}
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return nil
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}
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