[main] Upgrade to latest dependencies

go.mod

@@ -9,9 +9,9 @@ require (
 	k8s.io/api v0.30.3
 	k8s.io/apimachinery v0.30.3
 	k8s.io/client-go v0.30.3
-	knative.dev/eventing v0.42.1-0.20240813160331-71d5d5f0bb73
+	knative.dev/eventing v0.42.1-0.20240822171311-36e0721b3852
 	knative.dev/hack v0.0.0-20240814130635-06f7aff93954
-	knative.dev/pkg v0.0.0-20240812053209-cd3311cbab65
+	knative.dev/pkg v0.0.0-20240815051656-89743d9bbf7c
 )
 
 require (

go.sum

@@ -295,6 +295,8 @@ go.opencensus.io v0.23.0/go.mod h1:XItmlyltB5F7CS4xOC1DcqMoFqwtC6OG2xF7mCv7P7E=
 go.opencensus.io v0.24.0 h1:y73uSU6J157QMP2kn2r30vwW1A2W2WFwSCGnAVxeaD0=
 go.opencensus.io v0.24.0/go.mod h1:vNK8G9p7aAivkbmorf4v+7Hgx+Zs0yY+0fOtgBfjQKo=
 go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/atomic v1.10.0 h1:9qC72Qh0+3MqyJbAn8YU5xVq1frD8bn3JtD2oXtafVQ=
+go.uber.org/atomic v1.10.0/go.mod h1:LUxbIzbOniOlMKjJjyPfpl4v+PKK2cNJn91OQbhoJI0=
 go.uber.org/automaxprocs v1.5.3 h1:kWazyxZUrS3Gs4qUpbwo5kEIMGe/DAvi5Z4tl2NW4j8=
 go.uber.org/automaxprocs v1.5.3/go.mod h1:eRbA25aqJrxAbsLO0xy5jVwPt7FQnRgjW+efnwa1WM0=
 go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
@@ -646,12 +648,12 @@ k8s.io/kube-openapi v0.0.0-20240808142205-8e686545bdb8 h1:1Wof1cGQgA5pqgo8MxKPtf
 k8s.io/kube-openapi v0.0.0-20240808142205-8e686545bdb8/go.mod h1:Os6V6dZwLNii3vxFpxcNaTmH8LJJBkOTg1N0tOA0fvA=
 k8s.io/utils v0.0.0-20240711033017-18e509b52bc8 h1:pUdcCO1Lk/tbT5ztQWOBi5HBgbBP1J8+AsQnQCKsi8A=
 k8s.io/utils v0.0.0-20240711033017-18e509b52bc8/go.mod h1:OLgZIPagt7ERELqWJFomSt595RzquPNLL48iOWgYOg0=
-knative.dev/eventing v0.42.1-0.20240813160331-71d5d5f0bb73 h1:ZJDXuggkeiK0n2fCzBabFRI2TIWKy+BtfNgH4Eb8xEo=
-knative.dev/eventing v0.42.1-0.20240813160331-71d5d5f0bb73/go.mod h1:4ToBaBVKcH7wYrTebJ0bgIePYb9o7QVOoP5KP4s1L9w=
+knative.dev/eventing v0.42.1-0.20240822171311-36e0721b3852 h1:Ulgi6VO5b0/VAvSNvHIgls0GBiXlb9+S51KbtOzO4LU=
+knative.dev/eventing v0.42.1-0.20240822171311-36e0721b3852/go.mod h1:Clx8z37Nwg321H9+vGNxp5C6bVdo4l4XM5g6T5CgZVI=
 knative.dev/hack v0.0.0-20240814130635-06f7aff93954 h1:dGMK5VoL75szvrYQTL9NqhPYHu1f5dGaXx1hJI8fAFM=
 knative.dev/hack v0.0.0-20240814130635-06f7aff93954/go.mod h1:R0ritgYtjLDO9527h5vb5X6gfvt5LCrJ55BNbVDsWiY=
-knative.dev/pkg v0.0.0-20240812053209-cd3311cbab65 h1:9r795uNPp2f/dIUzHlJW4Prz3U+8+1ZpW4z6EBUxpwc=
-knative.dev/pkg v0.0.0-20240812053209-cd3311cbab65/go.mod h1:2kizutszzGp+EcVXivdigNd6dUM7O77QaLUTZeKaN5s=
+knative.dev/pkg v0.0.0-20240815051656-89743d9bbf7c h1:2crXVk4FG0dSG6WHaIT+WKbUzn7qG2wn0AfYmvA22zs=
+knative.dev/pkg v0.0.0-20240815051656-89743d9bbf7c/go.mod h1:cI2RPEEHZk+/dBpfHobs0aBdPA1mMZVUVWnGAc8NSzM=
 rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
 rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
 rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

vendor/knative.dev/eventing/pkg/apis/config/defaults.go

@@ -68,65 +68,204 @@ func NewDefaultsConfigFromConfigMap(config *corev1.ConfigMap) (*Defaults, error)
 	return NewDefaultsConfigFromMap(config.Data)
 }
 
+/*
+The priority precedence for determining the broker class and configuration is as follows:
+
+1. If a specific broker class is provided:
+   a. Check namespace-specific configuration for the given broker class
+   b. If not found, check cluster-wide configuration for the given broker class
+   c. If still not found, use the cluster-wide default configuration
+
+2. If no specific broker class is provided:
+   a. Check namespace-specific default broker class
+   b. If found, use its configuration (following step 1)
+   c. If not found, use cluster-wide default broker class and configuration
+
+3. If no default cluster configuration is set, return an error
+
+4. If no default namespace configuration is set, will use the cluster-wide default configuration.
+
+This can be represented as a flow chart:
+
+                    Start
+                      |
+                      v
+          Is broker class provided?
+                 /            \
+               Yes            No
+               /                \
+   Check namespace config    Check namespace
+   for provided class        default class
+         |                        |
+         v                        v
+    Found?                    Found?
+     /    \                    /    \
+   Yes    No                 Yes    No
+   |       |                 |       |
+   |       |                 |       |
+   |       v                 |       v
+   |   Check cluster         |   Use cluster
+   |   config for class      |   default class
+   |       |                 |   and config
+   |       v                 |
+   |    Found?               |
+   |    /    \               |
+   |  Yes    No              |
+   |   |      |              |
+   |   |      v              |
+   |   |   Use cluster       |
+   |   |   default config    |
+   v   v                     v
+ Use found configuration
+
+The system prioritizes namespace-specific configurations over cluster-wide defaults,
+and explicitly provided broker classes over default classes.
+*/
+
 // Defaults includes the default values to be populated by the webhook.
 type Defaults struct {
 	// NamespaceDefaultsConfig are the default Broker Configs for each namespace.
-	// Namespace is the key, the value is the KReference to the config.
-	NamespaceDefaultsConfig map[string]*ClassAndBrokerConfig `json:"namespaceDefaults,omitempty"`
+	// Namespace is the key, the value is the NamespaceDefaultConfig
+	NamespaceDefaultsConfig map[string]*DefaultConfig `json:"namespaceDefaults,omitempty"`
 
-	// ClusterDefaultBrokerConfig is the default broker config for all the namespaces that
-	// are not in NamespaceDefaultBrokerConfigs.
-	ClusterDefault *ClassAndBrokerConfig `json:"clusterDefault,omitempty"`
+	// ClusterDefaultConfig is the default broker config for all the namespaces that
+	// are not in NamespaceDefaultBrokerConfigs. Different broker class could have
+	// different default config.
+	ClusterDefaultConfig *DefaultConfig `json:"clusterDefault,omitempty"`
 }
 
-// ClassAndBrokerConfig contains configuration for a given namespace for broker. Allows
-// configuring the Class of the Broker, the reference to the
-// config it should use and it's delivery.
-type ClassAndBrokerConfig struct {
-	BrokerClass   string `json:"brokerClass,omitempty"`
+// DefaultConfig struct contains the default configuration for the cluster and namespace.
+type DefaultConfig struct {
+	// DefaultBrokerClass and DefaultBrokerClassConfig are the default broker class for the whole cluster/namespace.
+	// Users have to specify both of them
+	DefaultBrokerClass string `json:"brokerClass,omitempty"`
+
+	//Deprecated: Use the config in BrokerClasses instead
 	*BrokerConfig `json:",inline"`
 
+	// Optional: BrokerClasses are the default broker classes' config. The key is the broker class name, and the value is the config for that broker class.
+	BrokerClasses map[string]*BrokerConfig `json:"brokerClasses,omitempty"`
+
 	DisallowDifferentNamespaceConfig *bool `json:"disallowDifferentNamespaceConfig,omitempty"`
 }
 
-// BrokerConfig contains configuration for a given namespace for broker. Allows
+// BrokerConfig contains configuration for a given broker. Allows
 // configuring the reference to the
 // config it should use and it's delivery.
 type BrokerConfig struct {
 	*duckv1.KReference `json:",inline"`
 	Delivery           *eventingduckv1.DeliverySpec `json:"delivery,omitempty"`
 }
 
-// GetBrokerConfig returns a namespace specific Broker Configuration, and if
-// that doesn't exist, return a Cluster Default and if that doesn't exist
-// return an error.
-func (d *Defaults) GetBrokerConfig(ns string) (*BrokerConfig, error) {
+// GetBrokerConfig returns a namespace specific Broker Config, and if
+// that doesn't exist, return a Cluster Default and if that doesn't exist return an error.
+func (d *Defaults) GetBrokerConfig(ns string, brokerClassName *string) (*BrokerConfig, error) {
 	if d == nil {
-		return nil, errors.New("Defaults are nil")
+		return nil, errors.New("Defaults for Broker Configurations for cluster have not been set up. You can set them via ConfigMap config-br-defaults.")
+	}
+
+	// Early return if brokerClassName is provided and valid
+	if brokerClassName != nil && *brokerClassName != "" {
+		return d.getBrokerConfigByClassName(ns, *brokerClassName)
+	}
+
+	// Handling empty brokerClassName
+	return d.getBrokerConfigForEmptyClassName(ns)
+}
+
+// getBrokerConfigByClassName returns the BrokerConfig for the given brokerClassName.
+// It first checks the namespace specific configuration, then the cluster default configuration.
+func (d *Defaults) getBrokerConfigByClassName(ns string, brokerClassName string) (*BrokerConfig, error) {
+	// Check namespace specific configuration
+	if nsConfig, ok := d.NamespaceDefaultsConfig[ns]; ok && nsConfig != nil {
+		// check if the brokerClassName is the default broker class for this namespace
+		if nsConfig.DefaultBrokerClass == brokerClassName {
+			if nsConfig.BrokerConfig == nil {
+				// as no default broker class config is set for this namespace, check whether nsconfig's brokerClasses map has the config for this broker class
+				if config, ok := nsConfig.BrokerClasses[brokerClassName]; ok && config != nil {
+					return config, nil
+				}
+				// if not found, return the cluster default config
+				return d.getClusterDefaultBrokerConfig(brokerClassName)
+			} else {
+				// If the brokerClassName exists in the BrokerClasses, return the config in the BrokerClasses
+				if config, ok := nsConfig.BrokerClasses[brokerClassName]; ok && config != nil {
+					return config, nil
+				} else {
+					// If the brokerClassName is the default broker class for the namespace, return the BrokerConfig
+					return nsConfig.BrokerConfig, nil
+				}
+			}
+		} else {
+			// if the brokerClassName is not the default broker class for the namespace, check whether nsconfig's brokerClasses map has the config for this broker class
+			if config, ok := nsConfig.BrokerClasses[brokerClassName]; ok && config != nil {
+				return config, nil
+			}
+		}
 	}
-	value, present := d.NamespaceDefaultsConfig[ns]
-	if present && value.BrokerConfig != nil {
-		return value.BrokerConfig, nil
+
+	// Check cluster default configuration
+	return d.getClusterDefaultBrokerConfig(brokerClassName)
+}
+
+// getBrokerConfigForEmptyClassName returns the BrokerConfig for the given namespace when brokerClassName is empty.
+// It first checks the namespace specific configuration, then the cluster default configuration.
+func (d *Defaults) getBrokerConfigForEmptyClassName(ns string) (*BrokerConfig, error) {
+	// Check if namespace has a default broker class
+	if nsConfig, ok := d.NamespaceDefaultsConfig[ns]; ok && nsConfig != nil {
+		if nsConfig.DefaultBrokerClass != "" {
+			return d.getBrokerConfigByClassName(ns, nsConfig.DefaultBrokerClass)
+		}
 	}
-	if d.ClusterDefault != nil && d.ClusterDefault.BrokerConfig != nil {
-		return d.ClusterDefault.BrokerConfig, nil
+
+	// Fallback to cluster default configuration
+	return d.getClusterDefaultBrokerConfig("")
+}
+
+// getClusterDefaultBrokerConfig returns the BrokerConfig for the given brokerClassName.
+func (d *Defaults) getClusterDefaultBrokerConfig(brokerClassName string) (*BrokerConfig, error) {
+	if d.ClusterDefaultConfig == nil || d.ClusterDefaultConfig.BrokerConfig == nil {
+		return nil, errors.New("Defaults for Broker Configurations for cluster have not been set up. You can set them via ConfigMap config-br-defaults.")
 	}
-	return nil, errors.New("Defaults for Broker Configurations have not been set up.")
+
+	// Check if the brokerClassName is the default broker class for the whole cluster
+	if brokerClassName == "" || d.ClusterDefaultConfig.DefaultBrokerClass == brokerClassName {
+		// If the brokerClassName exists in the BrokerClasses, return the config in the BrokerClasses
+		if config, ok := d.ClusterDefaultConfig.BrokerClasses[brokerClassName]; ok && config != nil {
+			return config, nil
+		} else {
+			// If the brokerClassName is the default broker class for the cluster, return the BrokerConfig
+			return d.ClusterDefaultConfig.BrokerConfig, nil
+		}
+	}
+
+	if config, ok := d.ClusterDefaultConfig.BrokerClasses[brokerClassName]; ok && config != nil {
+		return config, nil
+	}
+
+	return d.ClusterDefaultConfig.BrokerConfig, nil
 }
 
 // GetBrokerClass returns a namespace specific Broker Class, and if
-// that doesn't exist, return a Cluster Default and if that doesn't exist
+// that doesn't exist, return a Cluster Default and if the defaults doesn't exist
 // return an error.
 func (d *Defaults) GetBrokerClass(ns string) (string, error) {
 	if d == nil {
-		return "", errors.New("Defaults are nil")
+		return "", errors.New("Defaults for Broker Configurations for cluster have not been set up. You can set them via ConfigMap config-br-defaults.")
 	}
-	value, present := d.NamespaceDefaultsConfig[ns]
-	if present && value.BrokerClass != "" {
-		return value.BrokerClass, nil
+
+	// Check if the namespace has a specific configuration
+	if nsConfig, ok := d.NamespaceDefaultsConfig[ns]; ok && nsConfig != nil {
+		if nsConfig.DefaultBrokerClass != "" {
+			return nsConfig.DefaultBrokerClass, nil
+		}
 	}
-	if d.ClusterDefault != nil && d.ClusterDefault.BrokerClass != "" {
-		return d.ClusterDefault.BrokerClass, nil
+
+	// Fallback to cluster default configuration if namespace specific configuration is not set
+	if d.ClusterDefaultConfig != nil && d.ClusterDefaultConfig.DefaultBrokerClass != "" {
+		return d.ClusterDefaultConfig.DefaultBrokerClass, nil
 	}
-	return "", errors.New("Defaults for Broker Configurations have not been set up.")
+
+	// If neither namespace specific nor cluster default broker class is found
+	return "", fmt.Errorf("Neither namespace specific nor cluster default broker class is found for namespace %q, please set them via ConfigMap config-br-defaults", ns)
 }

vendor/knative.dev/eventing/pkg/apis/eventing/v1/broker_defaults.go

@@ -30,13 +30,18 @@ import (
 func (b *Broker) SetDefaults(ctx context.Context) {
 	// Default Spec fields.
 	withNS := apis.WithinParent(ctx, b.ObjectMeta)
-	b.Spec.SetDefaults(withNS)
+	b.Spec.SetDefaults(withNS, b.Annotations["eventing.knative.dev/broker.class"])
 	eventing.DefaultBrokerClassIfUnset(withNS, &b.ObjectMeta)
 }
 
-func (bs *BrokerSpec) SetDefaults(ctx context.Context) {
+func (bs *BrokerSpec) SetDefaults(ctx context.Context, brokerClass string) {
 	cfg := config.FromContextOrDefaults(ctx)
-	c, err := cfg.Defaults.GetBrokerConfig(apis.ParentMeta(ctx).Namespace)
+	c, err := cfg.Defaults.GetBrokerConfig(apis.ParentMeta(ctx).Namespace, &brokerClass)
+
+	if bs.Config != nil {
+		c, err = cfg.Defaults.GetBrokerConfig(apis.ParentMeta(ctx).Namespace, &bs.Config.Kind)
+	}
+
 	if err == nil {
 		if bs.Config == nil {
 			bs.Config = c.KReference
@@ -49,10 +54,14 @@ func (bs *BrokerSpec) SetDefaults(ctx context.Context) {
 				BackoffDelay:   c.Delivery.BackoffDelay,
 			}
 		}
+
 	}
+
 	// Default the namespace if not given
 	if bs.Config != nil {
 		bs.Config.SetDefaults(ctx)
 	}
+
 	bs.Delivery.SetDefaults(ctx)
+
 }