net 2731 ip config entry OSS version (#16642)

* ip config entry

* name changing

* move to ent

* ent version

* renaming

* change format

* renaming

* refactor

* add default values

agent/consul/state/config_entry.go

@@ -553,6 +553,7 @@ func validateProposedConfigEntryInGraph(
 	case structs.InlineCertificate:
 	case structs.HTTPRoute:
 	case structs.TCPRoute:
+	case structs.RateLimitIPConfig:
 	default:
 		return fmt.Errorf("unhandled kind %q during validation of %q", kindName.Kind, kindName.Name)
 	}

agent/structs/config_entry.go

@@ -40,6 +40,8 @@ const (
 	InlineCertificate  string = "inline-certificate"
 	HTTPRoute          string = "http-route"
 	TCPRoute           string = "tcp-route"
+	// TODO: decide if we want to highlight 'ip' keyword in the name of RateLimitIPConfig
+	RateLimitIPConfig string = "control-plane-request-limit"
 
 	ProxyConfigGlobal string = "global"
 	MeshConfigMesh    string = "mesh"
@@ -653,6 +655,9 @@ func (c *ConfigEntryRequest) UnmarshalBinary(data []byte) error {
 }
 
 func MakeConfigEntry(kind, name string) (ConfigEntry, error) {
+	if configEntry := makeEnterpriseConfigEntry(kind, name); configEntry != nil {
+		return configEntry, nil
+	}
 	switch kind {
 	case ServiceDefaults:
 		return &ServiceConfigEntry{Name: name}, nil

agent/structs/config_entry_oss.go

@@ -44,3 +44,7 @@ func validateExportedServicesName(name string) error {
 	}
 	return nil
 }
+
+func makeEnterpriseConfigEntry(kind, name string) ConfigEntry {
+	return nil
+}

api/config_entry.go

@@ -24,6 +24,7 @@ const (
 	MeshConfig         string = "mesh"
 	ExportedServices   string = "exported-services"
 	SamenessGroup      string = "sameness-group"
+	RateLimitIPConfig  string = "control-plane-request-limit"
 
 	ProxyConfigGlobal string = "global"
 	MeshConfigMesh    string = "mesh"
@@ -366,6 +367,8 @@ func makeConfigEntry(kind, name string) (ConfigEntry, error) {
 		return &InlineCertificateConfigEntry{Kind: kind, Name: name}, nil
 	case HTTPRoute:
 		return &HTTPRouteConfigEntry{Kind: kind, Name: name}, nil
+	case RateLimitIPConfig:
+		return &RateLimitIPConfigEntry{Kind: kind, Name: name}, nil
 	default:
 		return nil, fmt.Errorf("invalid config entry kind: %s", kind)
 	}

api/config_entry_rate_limit_ip.go

@@ -0,0 +1,78 @@
+package api
+
+type readWriteRatesConfig struct {
+	ReadRate  float64
+	WriteRate float64
+}
+
+type RateLimitIPConfigEntry struct {
+	// Kind of the config entry. This will be set to structs.RateLimitIPConfig
+	Kind string
+	Name string
+	Mode string // {permissive, enforcing, disabled}
+
+	Meta map[string]string `json:",omitempty"`
+	// overall limits
+	ReadRate  float64
+	WriteRate float64
+
+	//limits specific to a type of call
+	ACL            *readWriteRatesConfig `json:",omitempty"`
+	Catalog        *readWriteRatesConfig `json:",omitempty"`
+	ConfigEntry    *readWriteRatesConfig `json:",omitempty"`
+	ConnectCA      *readWriteRatesConfig `json:",omitempty"`
+	Coordinate     *readWriteRatesConfig `json:",omitempty"`
+	DiscoveryChain *readWriteRatesConfig `json:",omitempty"`
+	Health         *readWriteRatesConfig `json:",omitempty"`
+	Intention      *readWriteRatesConfig `json:",omitempty"`
+	KV             *readWriteRatesConfig `json:",omitempty"`
+	Tenancy        *readWriteRatesConfig `json:",omitempty"`
+	PreparedQuery  *readWriteRatesConfig `json:",omitempty"`
+	Session        *readWriteRatesConfig `json:",omitempty"`
+	Txn            *readWriteRatesConfig `json:",omitempty"`
+
+	// Partition is the partition the config entry is associated with.
+	// Partitioning is a Consul Enterprise feature.
+	Partition string `json:",omitempty"`
+
+	// Namespace is the namespace the config entry is associated with.
+	// Namespacing is a Consul Enterprise feature.
+	Namespace string `json:",omitempty"`
+
+	// CreateIndex is the Raft index this entry was created at. This is a
+	// read-only field.
+	CreateIndex uint64
+
+	// ModifyIndex is used for the Check-And-Set operations and can also be fed
+	// back into the WaitIndex of the QueryOptions in order to perform blocking
+	// queries.
+	ModifyIndex uint64
+}
+
+func (r *RateLimitIPConfigEntry) GetKind() string {
+	return RateLimitIPConfig
+}
+func (r *RateLimitIPConfigEntry) GetName() string {
+	if r == nil {
+		return ""
+	}
+	return r.Name
+}
+func (r *RateLimitIPConfigEntry) GetPartition() string {
+	return r.Partition
+}
+func (r *RateLimitIPConfigEntry) GetNamespace() string {
+	return r.Namespace
+}
+func (r *RateLimitIPConfigEntry) GetMeta() map[string]string {
+	if r == nil {
+		return nil
+	}
+	return r.Meta
+}
+func (r *RateLimitIPConfigEntry) GetCreateIndex() uint64 {
+	return r.CreateIndex
+}
+func (r *RateLimitIPConfigEntry) GetModifyIndex() uint64 {
+	return r.ModifyIndex
+}