Crate peat_ffi 

Peat FFI - Foreign Function Interface for Kotlin/Swift

This crate provides UniFFI bindings to expose Peat functionality to Kotlin (Android) and Swift (iOS) consumer applications.

Features

• CoT Encoding: Convert track data to Cursor-on-Target XML
• Sync (optional): P2P document sync via AutomergeIroh backend

Uses proc-macro only UniFFI approach (no UDL file).

Android JNI Support

This crate also provides direct JNI bindings that bypass JNA’s symbol lookup issues on Android. The JNI functions are exported with standard naming (Java_package_Class_method) and can be called directly via Android’s NDK.

Modules

collections

Well-known collection names for Peat data

dart_ffi

Structs

CellInfo

Peat Cell information for display

CommandInfo

Command information for C2

DocumentChange

Document change event for subscriptions

MarkerInfo

Operator-placed map marker — the typed shape every peer renders in the Peat Markers panel and on the MapView (ADR-035 Universal Document transport, “markers” collection).

NodeConfig

Configuration for creating a PeatNode

NodeInfo

Node information for display

PeatNode

A Peat network node with P2P sync capabilities

PeerInfo

Information about a peer node for connection

PeerTransportState

Per-peer transport state across all registered transports.

Position

Geographic position for FFI

SubscriptionHandle

Handle for an active document subscription

SyncStats

Sync statistics

TrackData

Track data for CoT encoding

TrackInfo

Track information for display

TransportConfigFFI

Transport configuration for BLE and other transports (ADR-039, #556)

TransportLink

One transport’s link state for a peer (FFI mirror of peat_mesh::transport::LinkState).

UniFfiTraitVtableDocumentCallback

Velocity

Velocity vector for FFI

Enums

CellStatus

Cell status enumeration

ChangeType

Type of document change event

CommandStatus

Command status enumeration

NodeStatus

Node status enumeration

PeatError

FFI Error type

TrackCategory

Track category enumeration

TransportLinkQuality

Bucketed link quality for UI tier indicators.

TransportPathKind

Connection path classification.

Traits

DocumentCallback

Callback interface for document change notifications

Functions

JNI_OnLoad

JNI_OnLoad - Called when library is loaded via System.loadLibrary()

Java_com_defenseunicorns_peat_PeatJni_blobAddPeerJni

JNI: Add a known blob peer.

Java_com_defenseunicorns_peat_PeatJni_blobEndpointIdJni

JNI: Get blob endpoint ID as hex string (or null if blob transfer disabled).

Java_com_defenseunicorns_peat_PeatJni_blobExistsLocallyJni

JNI: Check if blob exists locally.

Java_com_defenseunicorns_peat_PeatJni_blobGetJni

JNI: Fetch blob bytes by hash. Returns byte[] or null.

Java_com_defenseunicorns_peat_PeatJni_blobPutJni

JNI: Store bytes as a blob. Returns the content hash as a hex string.

Java_com_defenseunicorns_peat_PeatJni_clearGlobalNodeHandleJni

JNI: Release the owning reference stored in [GLOBAL_NODE_HANDLE].

Java_com_defenseunicorns_peat_PeatJni_connectPeerJni

Connect to a known peer by node ID and address (bypasses mDNS).

Java_com_defenseunicorns_peat_PeatJni_connectedPeersJni

JNI: Get connected peer IDs as a JSON array

Java_com_defenseunicorns_peat_PeatJni_createNodeJni

JNI: Create a Peat node (simplified for testing)

Java_com_defenseunicorns_peat_PeatJni_createNodeWithConfigJni

JNI: Create a PeatNode with transport configuration (ADR-039, #558)

Java_com_defenseunicorns_peat_PeatJni_enableBlobTransferJni

JNI: Enable blob transfer on the PeatNode.

Java_com_defenseunicorns_peat_PeatJni_endpointSocketAddrJni

JNI: Get this node’s iroh-endpoint first IP socket address as an "ip:port" string, or null if no socket is bound. The result is what connectPeerJni expects as its address argument when one in-process instance dials another on loopback (no discovery layer to populate it). peat-mesh#138 M4.

Java_com_defenseunicorns_peat_PeatJni_forceStoreErrorForTestingJni

JNI: Test-only fault injection. Arms a one-shot flag so the next getDocumentJni call short-circuits to the Err branch (throws RuntimeException) without touching the underlying store. Self- clears on consumption.

Java_com_defenseunicorns_peat_PeatJni_freeNodeJni

JNI: Free a PeatNode handle

Java_com_defenseunicorns_peat_PeatJni_getCellsJni

JNI: Get all cells as JSON array string

Java_com_defenseunicorns_peat_PeatJni_getCommandsJni

JNI: Get all commands as JSON array string

Java_com_defenseunicorns_peat_PeatJni_getDocumentJni

JNI: Read a document back from the local store as JSON, or null if the document doesn’t exist locally. Complements publishDocumentJni — needed by instrumented tests that verify sync convergence by reading on the receiver side. peat-mesh#138 M4.

Java_com_defenseunicorns_peat_PeatJni_getGlobalNodeHandleJni

JNI: Get the global node handle (survives APK replacement)

Java_com_defenseunicorns_peat_PeatJni_getMarkersJni

JNI: Get all markers as JSON array string

Java_com_defenseunicorns_peat_PeatJni_getNodesJni

JNI: Get all nodes as JSON array string

Java_com_defenseunicorns_peat_PeatJni_getTracksJni

JNI: Get all tracks as JSON array string

Java_com_defenseunicorns_peat_PeatJni_nativeInit

Register native methods for PeatJni class

Java_com_defenseunicorns_peat_PeatJni_nodeIdJni

JNI: Get node ID from a PeatNode handle

Java_com_defenseunicorns_peat_PeatJni_peatVersion

JNI: Get Peat library version

Java_com_defenseunicorns_peat_PeatJni_peerCountJni

JNI: Get peer count from a PeatNode handle

Java_com_defenseunicorns_peat_PeatJni_publishDocumentJni

Publish a generic document into a named collection via peat_mesh::Node.

Java_com_defenseunicorns_peat_PeatJni_publishDocumentWithOriginJni

Origin-aware sibling of [Java_..._publishDocumentJni] (ADR-059 Amendment 2 — Slice 1.b.4 host-side wiring).

Java_com_defenseunicorns_peat_PeatJni_publishMarkerJni

JNI: Publish a marker into the doc store. Routes through the universal-Document transport on every registered radio (LiteBridgeTranslator on BLE, iroh sync for cross-mesh peers).

Java_com_defenseunicorns_peat_PeatJni_publishNodeJni

JNI: Publish a node (self-position/PLI) to the Peat network

Java_com_defenseunicorns_peat_PeatJni_requestSyncJni

JNI: Request full document sync with all connected peers

Java_com_defenseunicorns_peat_PeatJni_startSyncJni

JNI: Start sync on a PeatNode

Java_com_defenseunicorns_peat_PeatJni_subscribeDocumentChangesJni

JNI: Subscribe to document change notifications

Java_com_defenseunicorns_peat_PeatJni_testJni

JNI: Test that JNI bindings work

Java_com_defenseunicorns_peat_PeatJni_unsubscribeDocumentChangesJni

JNI: Unsubscribe from document change notifications

create_node

Create a new PeatNode with FormationKey authentication

create_position

Create a position from coordinates

create_velocity

Create a velocity from bearing and speed

encode_track_to_cot

Encode a track to CoT XML string

peat_version

Get the Peat library version

uniffi_peat_ffi_fn_init_callback_vtable_documentcallback