/
pm_zap.go
54 lines (47 loc) · 1.69 KB
/
pm_zap.go
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package pm_zap
import (
"context"
"fmt"
"time"
"cloud.google.com/go/pubsub"
"github.com/grpc-ecosystem/go-grpc-middleware/logging/zap/ctxzap"
"github.com/k-yomo/pm"
pm_logging "github.com/k-yomo/pm/middleware/logging"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
// SubscriptionInterceptor returns a subscription interceptor that optionally logs the subscription process.
func SubscriptionInterceptor(logger *zap.Logger, opt ...Option) pm.SubscriptionInterceptor {
opts := &options{
shouldLog: pm_logging.DefaultLogDecider,
messageProducer: DefaultMessageProducer,
timestampFormat: time.RFC3339,
}
for _, o := range opt {
o.apply(opts)
}
return func(info *pm.SubscriptionInfo, next pm.MessageHandler) pm.MessageHandler {
return func(ctx context.Context, m *pubsub.Message) error {
startTime := time.Now()
newCtx := newLoggerForProcess(ctx, logger, info, startTime, opts.timestampFormat)
err := next(newCtx, m)
if opts.shouldLog(info, err) {
opts.messageProducer(
newCtx, fmt.Sprintf("finished processing message '%s'", m.ID),
err,
time.Since(startTime),
)
}
return err
}
}
}
func newLoggerForProcess(ctx context.Context, logger *zap.Logger, info *pm.SubscriptionInfo, start time.Time, timestampFormat string) context.Context {
var fields []zapcore.Field
fields = append(fields, zap.String("pubsub.start_time", start.Format(timestampFormat)))
if d, ok := ctx.Deadline(); ok {
fields = append(fields, zap.String("pubsub.deadline", d.Format(timestampFormat)))
}
fields = append(fields, zap.String("pubsub.topic_id", info.TopicID), zap.String("pubsub.subscription_id", info.SubscriptionID))
return ctxzap.ToContext(ctx, logger.With(fields...))
}