Laser Wire
The wire contract by LaserData, Inc. for Apache Iggy, as one typed, runtime-free crate: the managed command codes, the CBOR envelopes, the query IR, projections and schemas, the key-value, fork, and knowledge-graph surfaces, the agent envelope (the Agent Data Exchange Protocol, AGDX), the HTTP views and routes, the header and topic dictionaries, the caps, and the golden fixture corpus that pins every byte.
The laser-sdk client re-exports this crate as laser_sdk::wire, and LaserData Cloud consumes the same definitions instead of hand-mirroring them. No IO, no async, no clock, no randomness, so the crate compiles unchanged for native servers and wasm32-unknown-unknown.
Features
Modules carve the API surface. Features gate dependencies. No wire-contract type is ever feature-gated.
| Feature | Adds | wasm |
|---|---|---|
cbor (default) |
named-field CBOR (RFC 8949) encode/decode + the [len: u32 LE] socket framing, sans-io |
yes |
codecs |
Codec/Decoder traits, Json/Msgpack/Cbor marker types, Row/KvEntry decode helpers |
yes |
bson |
the BSON codec | no (its tree pulls getrandom) |
fixtures |
the golden corpus embedded via include_bytes! + assert helpers |
yes |
builders |
the fluent Query::builder() (bon-derived), non-default so a type-only consumer that struct-literals Query does not pull bon |
yes |
http-client |
a typed /agdx/* client (http_client) over a caller-injected Transport (gloo-net on wasm, reqwest natively), the crate's one async surface, runtime-agnostic |
yes |
Module map
| Module | Owns |
|---|---|
codes |
managed command codes + per-surface op versions |
headers |
the agdx.* / gen_ai.* header dictionaries + header caps + CONVERSATION_FIELD (the auto-projected conversation_id field name the conversation lens filters on) |
topics |
the _agdx ops stream + topic names |
limits |
page, KV, frame, and agent-envelope caps |
content |
ContentType + the agdx.ct u8 code dictionary |
hello |
HelloReply / OpVersions (the capability-handshake body) + BackendAnnounce (the backend's capability announcement to the streaming server), incl. the features capability bitset (feature::KV_CAS/READ_YOUR_WRITES/STRONG_CONSISTENCY/KV_CAS_FENCED/AGENT_WORKFLOW/KEYWORD_SEARCH/WATCH/AUTHZ) |
authz |
the capability layer: Effect/Feature/Action/ResourcePattern/Grant/Role/RoleBinding, the feature_action(code) classifier + action_index coarse-bitmask layout, the whoami/role/binding/history request+reply types, revision-guarded binding writes, and AuthzReply/AuthzError. Orthogonal to the substrate's own permissions, the fork-native authorization band (AGDX_AUTHZ_*) |
batch |
the mixed-operation batch (BatchRequest/BatchItem/BatchReply, MAX_BATCH_OPS = 64): several managed requests in one round trip, per-op results, never a transaction |
change |
ChangeRecord, the change-feed frame the projector publishes per committed notifying batch (a wakeup carrying the index and its committed offset window, never the rows) |
query |
the query IR (incl. the Consistency level + the ConsistencyGate server helper), QueryEnvelope/QueryReply, Row, QueryError (incl. Stale) |
result |
the unified ResultCode space + HTTP status mapping with From projections off every surface error, and CommandError (the surface-agnostic fallback reply) |
browse |
registry browse requests + BrowseReply, including DecodeRecord |
control |
Projection (incl. ProjectionKind::Graph + the EntitySchema node/edge extraction plan), ProjectionBinding, SchemaDef, ControlEnvelope |
kv |
the key-value requests (incl. KvCas/CasExpect and the single-transaction KvCopy/KvMove), KvReply (incl. Committed), KvError (incl. VersionConflict), the entry version token, and an optional conversation on KvScan/KvDeleteMany that narrows a memory-view scan to one conversation (additive, omitted on the wire when unset) |
fork |
the Iggy server requests, ForkReply, ForkError, and validate_fork_id (the shared id charset safelist) |
graph |
the knowledge-graph ops (GraphQuery/GraphNeighbors/GraphUpsert), GraphResult, GraphError, NodeId/EdgeId, and the content-addressed constructors NodeId::content/EdgeId::content + GraphNode::entity/GraphEdge::relate. A node and an edge carry an optional source ([SourceRef]: a message position, key-value entry, or memory id) so a graph element links back to its origin, skip-none and excluded from the content-addressed id (GraphEdge::with_source). SourceRef::Message carries an optional conversation, and GraphQuery/GraphNeighbors an optional conversation, so a read narrows a traversal to one conversation (additive, omitted on the wire when unset) |
hashing |
the one canonical content_id (a dependency-free FNV over byte segments) every content-addressed id shares, pinned by a golden vector |
agent |
the Agent Data Exchange Protocol: AgentEnvelope, ids, dictionaries, validate, BodyRef, the pinned operation/metadata vocabularies |
forward |
the forwarded managed-request frames (ForwardedQuery/ForwardedCommand) |
commands |
the Command trait pairing each code with its request/reply types |
http |
/agdx/* route constants, path builders, typed query-parameter structs (PARAM_* + KvScanQuery/ProjectionListQuery/...), JSON view types, and the canonical ErrorBody reply contract |
http_client |
(feature http-client) a typed /agdx/* client over an injected Transport, owning routes, base64url, query strings, and the bare-Ok-or-ErrorBody unwrap, including the authz whoami/roles/bindings routes |
framing |
encode_named/decode_named + frame_encode/frame_decode |
codecs |
the payload codec traits and marker types |
fixtures |
the embedded golden corpus |
Compatibility rules
Named-field CBOR ignores unknown fields, so additive optional fields are compatible. Enum growth rides the per-surface op versions advertised by the capability handshake. The reply, outcome, and error enums are #[non_exhaustive], so a consumer keeps compiling when a variant is added. The u8-code dictionaries (task state, agent error code, dead-letter reason) go further: an unknown code decodes to an Unrecognized(u8) variant and re-encodes byte-for-byte, so an old build relays a newer peer's code instead of failing. The internally tagged config enums that cross the JSON HTTP surface (SchemaSource, RetentionPolicy) carry a unit Unknown #[serde(other)] catch-all in the same spirit (lossy and read-only, so never re-apply an Unknown). A few executor-dispatched vocabularies (the query comparison and aggregate operators) are deliberately exhaustive, so adding one is a compile error that forces every backend to implement it rather than silently mis-handling it.
Every Vec<u8> byte field rides as a CBOR byte string via the shared encoding::bin_bytes/opt_bin_bytes helpers (compact, unambiguous), never as a bare Vec<u8> (which would encode as a CBOR array of integers). The forwarded frames (ForwardedQuery/ForwardedCommand) and SchemaSource::Protobuf.descriptor_set follow this like every other surface.
The fixture corpus pins the encoding behavior of the crate itself: regenerate with AGDX_WIRE_FIXTURES_REGEN=1 only on an intentional wire change. Decoding hostile bytes never panics, and that guarantee is held by a deterministic robustness suite (wire/tests/robustness.rs) and a cargo-fuzz crate under fuzz/.
License
Apache-2.0. Copyright LaserData, Inc.
Apache and Apache Iggy are trademarks of the Apache Software Foundation. Use of these marks does not imply endorsement by the Apache Software Foundation.