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client.go: allow transaction logs to use a specific logger #361

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client.go: allow transaction logs to use a specific logger #361

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28 changes: 24 additions & 4 deletions client/client.go
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Original file line number Diff line number Diff line change
Expand Up @@ -107,7 +107,8 @@ type ovsdbClient struct {

trafficSeen chan struct{}

logger *logr.Logger
logger *logr.Logger
txnLogger *logr.Logger
}

// database is everything needed to map between go types and an ovsdb Database
Expand Down Expand Up @@ -181,6 +182,25 @@ func newOVSDBClient(clientDBModel model.ClientDBModel, opts ...Option) (*ovsdbCl
)
ovs.logger = &l
}

// Specific logger for transactions. Set verbosity explicitly.
if ovs.options.txnLogger == nil {
if ovs.options.logger == nil {
// create a new logger to log to stdout
l := stdr.NewWithOptions(log.New(os.Stderr, "", log.LstdFlags), stdr.Options{LogCaller: stdr.All}).WithName("libovsdb").WithValues(
"database", ovs.primaryDBName,
).V(4)
ovs.txnLogger = &l
} else {
l := ovs.options.logger.WithValues(
"database", ovs.primaryDBName,
).V(4)
ovs.txnLogger = &l
}
} else {
l := ovs.options.txnLogger.V(4)
ovs.txnLogger = &l
}
ovs.metrics.init(clientDBModel.Name(), ovs.options.metricNamespace, ovs.options.metricSubsystem)
ovs.registerMetrics()

Expand Down Expand Up @@ -822,9 +842,9 @@ func (o *ovsdbClient) transact(ctx context.Context, dbName string, skipChWrite b
if o.rpcClient == nil {
return nil, ErrNotConnected
}
dbgLogger := o.logger.WithValues("database", dbName).V(4)
if dbgLogger.Enabled() {
dbgLogger.Info("transacting operations", "operations", fmt.Sprintf("%+v", operation))
// Use dedicated logger for providing transactions.
if o.txnLogger.Enabled() {
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How about injecting the logger from context? If so we can share a client and let different Transact calls use different log contexts.

something like log.FrromContext

o.txnLogger.Info(fmt.Sprintf("%+v", operation))
}
err := o.rpcClient.CallWithContext(ctx, "transact", args, &reply)
if err != nil {
Expand Down
10 changes: 10 additions & 0 deletions client/options.go
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ type options struct {
timeout time.Duration
backoff backoff.BackOff
logger *logr.Logger
txnLogger *logr.Logger
registry prometheus.Registerer
shouldRegisterMetrics bool // in case metrics are changed after-the-fact
metricNamespace string // prometheus metric namespace
Expand Down Expand Up @@ -137,6 +138,15 @@ func WithLogger(l *logr.Logger) Option {
}
}

// WithTransactionLogger allows setting a specific log sink for transactions.
// Otherwise, the default go log package is used.
func WithTransactionLogger(l *logr.Logger) Option {
return func(o *options) error {
o.txnLogger = l
return nil
}
}

// WithMetricsRegistry allows the user to specify a Prometheus metrics registry.
// If supplied, the metrics as defined in metrics.go will be registered.
func WithMetricsRegistry(r prometheus.Registerer) Option {
Expand Down
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