From 70df4515bcb0f6de73bfff4e0cd2aa089c47372f Mon Sep 17 00:00:00 2001
From: Felix Kunde <felix-kunde@gmx.de>
Date: Fri, 30 Jul 2021 14:11:12 +0200
Subject: [PATCH] intermediate commit

---
 pkg/cluster/streams.go | 26 +++++++++++++++-----------
 1 file changed, 15 insertions(+), 11 deletions(-)

diff --git a/pkg/cluster/streams.go b/pkg/cluster/streams.go
index b84f4424c..a2adb1b15 100644
--- a/pkg/cluster/streams.go
+++ b/pkg/cluster/streams.go
@@ -19,8 +19,8 @@ var outboxTableNameTemplate config.StringTemplate = "{table}_{eventtype}_outbox"
 func (c *Cluster) createStreams() error {
 	c.setProcessName("creating streams")
 
-	logicalDecodingEnabled, err := c.logicalDecodingEnabled()
-	if !logicalDecodingEnabled || err != nil {
+	err := c.syncLogicalDecoding()
+	if err != nil {
 		return fmt.Errorf("logical decoding setup incomplete: %v", err)
 	}
 
@@ -33,27 +33,31 @@ func (c *Cluster) createStreams() error {
 	return nil
 }
 
-func (c *Cluster) logicalDecodingEnabled() (bool, error) {
-	var errors []string
+func (c *Cluster) syncLogicalDecoding() error {
 
 	walLevel := c.Spec.PostgresqlParam.Parameters["wal_level"]
 	if walLevel == "" || walLevel != "logical" {
-		errors = append(errors, "setting 'wal_level: logical' missing under spec.postgresql.parameters")
+		c.logger.Debugf("setting wal level to 'logical' in postgres configuration")
+		pods, err := c.listPods()
+		if err != nil || len(pods) == 0 {
+			return err
+		}
+		for _, pod := range pods {
+			if err := c.patroni.SetPostgresParameters(&pod, map[string]string{"wal_level": "logical"}); err == nil {
+				return fmt.Errorf("could not set wal_level to 'logical' calling Patroni REST API: %v", err)
+			}
+		}
 	}
 
 	for _, stream := range c.Spec.Streams {
 		slotName := c.getLogicalReplicationSlot(stream.Database)
 
 		if slotName == "" {
-			errors = append(errors, fmt.Sprintf("no logical replication slot defined under spec.patroni.slots for database %q", stream.Database))
+			c.logger.Debugf("creating logical replication slot %d in database %d", constants.EventStreamSourceSlotPrefix+stream.Database, stream.Database)
 		}
 	}
 
-	if len(errors) > 0 {
-		return false, fmt.Errorf("logical decoding setup incomplete: %v", errors)
-	}
-
-	return true, nil
+	return nil
 }
 
 func (c *Cluster) syncStreamDbResources() error {