Crate zerodds_opcua_gateway 

OMG DDS-OPCUA Gateway 1.0 — Type-System + AddressSpace Mapping.

Crate zerodds-opcua-gateway. Safety classification: STANDARD. Spec formal/2020-01-01 (docs/standards/cache/omg/dds-opcua-1.0.pdf).

Scope

We implement the type-system-mapping layer from Spec §8.2 (OPC-UA → DDS) + §9.2 (DDS → OPC-UA) as a pure-Rust no_std+alloc library:

• BuiltinTypeKind enum with all 25 OPC-UA built-in type IDs (Spec §8.2 Tab 8.1).
• Primitive-Type-Mapping (Boolean, SByte/Byte, Int16/UInt16, Int32/UInt32, Int64/UInt64, Float, Double, String) — Spec Tab 8.1.
• NodeId with all 4 identifier kinds (Numeric, String, Guid, Opaque) — Spec §8.2.2 Tab 8.2.
• ExpandedNodeId with namespace URI + server index — Spec §8.2.2.
• NodeClass enum (8 values) — Spec §8.3.1 Tab 8.3.
• StatusCode + Guid + ByteString + LocalizedText + QualifiedName models — Spec Tab 8.2.
• BodyEncoding + ExtensionObject + Variant + DataValue — Spec Tab 8.2.
• AddressSpace-Mapping: DDS Domain → OPC-UA ObjectNode + DDS Topic → OPC-UA ObjectNode + DDS Sample → OPC-UA Variable — Spec §9.3.

What is not covered

• OPC-UA Binary Wire-Encoding (Spec OPCUA-06 Mappings) — the caller layer (typically an external OPC-UA stack like opcua or open62541).
• Subscription Service Set Behavior (Spec §8.4.3) — runtime logic; the mapping model is exposed, the actual polling/ notification is the caller’s.
• Historical Access (Spec §8.3.4 + §9.3.4) — requires a historical-server backend.

Re-exports

pub use address_space::DomainNode;

pub use address_space::InstanceNode;

pub use address_space::SampleVariable;

pub use address_space::TopicNode;

pub use address_space::build_sample_instance;

pub use address_space::mangle_topic_node_browse_name;

pub use conformance::ConformancePoint;

pub use conformance::DECLARED_CONFORMANCE;

pub use conformance::declares;

pub use conformance::is_multi_point_conformant;

pub use data_value::DataValue;

pub use data_value::ExtensionObject;

pub use data_value::Variant;

pub use data_value::VariantValue;

pub use node_id::ExpandedNodeId;

pub use node_id::NodeId;

pub use node_id::NodeIdentifier;

pub use types::BuiltinTypeKind;

pub use types::ByteString;

pub use types::Guid;

pub use types::LocalizedText;

pub use types::NodeClass;

pub use types::QualifiedName;

pub use types::StatusCode;

pub use types::map_primitive_to_dds;

pub use xml::BridgeDef;

pub use xml::ConnectionDirection;

pub use xml::GatewayConfig;

pub use xml::OpcuaXmlError;

pub use xml::OpcuaXmlError as XmlError;

pub use xml::UaConnection;

pub use xml::parse_gateway_config;

Modules

address_space

AddressSpace-Mapping DDS ↔ OPC UA — Spec §9.3.

conformance

Spec §2 — declared OPC UA/DDS Gateway conformance points.

data_value

Variant + DataValue + ExtensionObject — Spec §8.2.2 Tab 8.2.

dds_to_ua

DDS → OPC UA Type Mapping — Spec §9.2.

historical

Historical Data Reading — Spec §9.3.4.4.

node_id

NodeId + ExpandedNodeId — Spec §8.2.2 Tab 8.2.

service_sets

OPC UA Service Sets Mapping — Spec §8.3.

subscription_mapping

OPC-UA Subscription Model Mapping — Spec §8.4.

types

OPC-UA Built-in Types + Primitive-Type-Mapping zu DDS — Spec §8.2.

xml

DDS-OPCUA Gateway XML Configuration Loader (Spec §10).