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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 | 7x 7x 7x 28x 28x 28x 40x 40x 40x 28x 28x 63x 63x 63x 28x 28x 28x 28x 112x 28x 28x 28x 28x 7x 21x | import { useCallback, useMemo, type JSX, type MouseEvent } from "react";
import {
Background,
BackgroundVariant,
Controls,
MiniMap,
ReactFlow,
type EdgeTypes,
type Node,
type NodeTypes,
} from "@xyflow/react";
import "@xyflow/react/dist/style.css";
import type { Session, StreamData, StreamMessageData } from "../../hooks/types.js";
import { SESSION_STATUS_VAR_NAMES, sessionStatusStyle } from "../../utils/sessionStatus.js";
import {
SESSION_NODE_TYPE,
STREAM_NODE_TYPE,
useCoordinationLayout,
type CoordNodeData,
} from "./useCoordinationLayout.js";
import { SessionNode } from "./SessionNode.js";
import { StreamNode } from "./StreamNode.js";
import { MessageDotEdge } from "./MessageDotEdge.js";
import styles from "./CoordinationGraph.module.scss";
/** Fallback node color for the MiniMap when a CSS variable is unavailable. */
const MINIMAP_FALLBACK_COLOR: string = "#6b7a8d";
/** Props for {@link CoordinationGraph}. */
export interface CoordinationGraphProps {
/** Streams to visualize (already filtered for internals by the caller). */
streams: StreamData[];
/** All known sessions, used to resolve subscribers into nodes and colors. */
sessions: Session[];
/** Currently selected stream id (its hub node is highlighted). */
selectedStreamId?: string;
/** Called with a stream id when its hub node is clicked. */
onSelectStream: (streamId: string) => void;
/**
* Live per-stream message buffers (ascending by seq). When a stream's newest
* seq advances, its edges animate a message dot. Omit for a static graph.
*/
recentMessages?: Record<string, StreamMessageData[]>;
/** Resolved theme id; recomputes MiniMap colors when the theme changes. */
resolvedThemeId: string;
}
/** Custom node type registry for the coordination graph. */
const nodeTypes: NodeTypes = {
[SESSION_NODE_TYPE]: SessionNode,
[STREAM_NODE_TYPE]: StreamNode,
};
/** Custom edge type registry — the animated message-dot edge. */
const edgeTypes: EdgeTypes = {
messageDot: MessageDotEdge,
};
/**
* Live bipartite network graph of agent sessions and IPC streams. Sessions and
* stream "hubs" are dagre-laid-out (deterministic); two-party pipes collapse to
* direct edges. Read-only ("watch") - clicking a hub selects its stream.
*/
export function CoordinationGraph({
streams,
sessions,
selectedStreamId,
onSelectStream,
recentMessages,
resolvedThemeId,
}: CoordinationGraphProps): JSX.Element {
const layout = useCoordinationLayout(streams, sessions);
// Stamp each edge with its stream's latest message seq. When that seq advances,
// MessageDotEdge fires a one-shot dot; stamping by streamId fans the pulse out
// across all of a stream's edges (writer -> hub and hub -> readers).
const edges = useMemo(
() =>
layout.edges.map((edge) => {
Iif (!edge.data) {
return edge;
}
const seq = recentMessages?.[edge.data.streamId]?.at(-1)?.seq;
return seq === undefined ? edge : { ...edge, data: { ...edge.data, pulseSeq: seq } };
}),
[layout.edges, recentMessages],
);
// Mark the selected stream hub so React Flow applies node selection styling.
const nodes = useMemo(
() =>
layout.nodes.map((node) => {
const data = node.data as CoordNodeData;
const selected = data.kind === "stream" && data.stream.id === selectedStreamId;
return selected ? { ...node, selected: true } : node;
}),
[layout.nodes, selectedStreamId],
);
/** Theme-resolved colors for the session-status CSS vars (MiniMap needs concrete colors). */
const resolvedStatusColors = useMemo(() => {
const style = getComputedStyle(document.documentElement);
const colors: Record<string, string> = {};
for (const varName of SESSION_STATUS_VAR_NAMES) {
colors[varName] = style.getPropertyValue(varName).trim() || MINIMAP_FALLBACK_COLOR;
}
return colors;
}, [resolvedThemeId]);
const onNodeClick = useCallback(
(_event: MouseEvent, node: Node) => {
const data = node.data as CoordNodeData;
Iif (data.kind === "stream") {
onSelectStream(data.stream.id);
}
},
[onSelectStream],
);
const minimapNodeColor = useCallback(
(node: Node): string => {
const data = node.data as CoordNodeData;
Iif (data.kind === "session") {
return (
resolvedStatusColors[sessionStatusStyle(data.session.status, data.external).varName] ??
MINIMAP_FALLBACK_COLOR
);
}
return MINIMAP_FALLBACK_COLOR;
},
[resolvedStatusColors],
);
if (layout.nodes.length === 0) {
return (
<div className={styles.empty} data-testid="coordination-graph-empty">
No active streams to visualize
</div>
);
}
return (
<div className={styles.graphContainer} data-testid="coordination-graph">
<ReactFlow
nodes={nodes}
edges={edges}
nodeTypes={nodeTypes}
edgeTypes={edgeTypes}
onNodeClick={onNodeClick}
// Read-only "watch" graph: there is no edit mode and no onConnect, so
// disable the drag-to-connect affordance on node handles (#1303).
nodesConnectable={false}
fitView
fitViewOptions={{ padding: 0.2 }}
minZoom={0.3}
maxZoom={2}
>
<Background
variant={BackgroundVariant.Dots}
gap={24}
size={1}
color="var(--text-disabled)"
/>
<Controls showInteractive={false} />
<MiniMap
nodeColor={minimapNodeColor}
maskColor="var(--bg-overlay)"
style={{ background: "var(--bg-inset)" }}
/>
</ReactFlow>
</div>
);
}
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