| 1 | import '@ipshipyard/libp2p-inspector-ui/index.css' |
| 2 | import { valueCodecs } from '@ipshipyard/libp2p-inspector-metrics' |
| 3 | import { Inspector, FatalErrorPanel, HandleCopyToClipboardContext } from '@ipshipyard/libp2p-inspector-ui' |
| 4 | import { TypedEventEmitter } from '@libp2p/interface' |
| 5 | import { pipe } from 'it-pipe' |
| 6 | import { pushable } from 'it-pushable' |
| 7 | import { rpc } from 'it-rpc' |
| 8 | import { useCallback, useEffect, useState } from 'react' |
| 9 | import { createRoot } from 'react-dom/client' |
| 10 | import { rendererIPC } from './ipc.js' |
| 11 | import { ConnectPanel } from './panels/connect.js' |
| 12 | import { NodePanel } from './panels/node.js' |
| 13 | import type { InspectorIPC, InspectTarget } from '../ipc/index.ts' |
| 14 | import type { InspectorRPCEvents, MetricsRPC } from '@ipshipyard/libp2p-inspector-metrics' |
| 15 | import type { TypedEventTarget, PeerId } from '@libp2p/interface' |
| 16 | import type { ReactElement } from 'react' |
| 17 | |
| 18 | const platform = 'chrome' |
| 19 | const RPC_TIMEOUT = 10_000 |
| 20 | |
| 21 | interface InspectorEvents extends InspectorRPCEvents { |
| 22 | targets: CustomEvent<InspectTarget[]> |
| 23 | connected: CustomEvent<Error | undefined> |
| 24 | } |
| 25 | |
| 26 | export interface AppProps { |
| 27 | ipc: InspectorIPC |
| 28 | metrics: MetricsRPC |
| 29 | events: TypedEventTarget<InspectorEvents> |
| 30 | } |
| 31 | |
| 32 | function App ({ ipc, metrics, events }: AppProps): ReactElement { |
| 33 | const [status, setStatus] = useState('connecting') |
| 34 | const [error, setError] = useState<Error>() |
| 35 | const [targets, setTargets] = useState<InspectTarget[]>([]) |
| 36 | |
| 37 | const handleCancelConnect = useCallback((evt: React.UIEvent): void => { |
| 38 | evt.preventDefault() |
| 39 | ipc.cancelConnect() |
| 40 | }, []) |
| 41 | |
| 42 | const handleDisconnect = useCallback((event: React.UIEvent) => { |
| 43 | event.preventDefault() |
| 44 | ipc.disconnect() |
| 45 | setStatus('connecting') |
| 46 | }, []) |
| 47 | |
| 48 | const handleConnect = useCallback((evt: React.UIEvent, address: string | PeerId): void => { |
| 49 | evt.preventDefault() |
| 50 | ipc.connect(address) |
| 51 | }, []) |
| 52 | |
| 53 | useEffect(() => { |
| 54 | function onConnected (evt: CustomEvent<Error | undefined>): void { |
| 55 | if (evt.detail != null) { |
| 56 | setError(evt.detail) |
| 57 | setStatus('error') |
| 58 | |
| 59 | return |
| 60 | } |
| 61 | |
| 62 | setStatus('connected') |
| 63 | } |
| 64 | |
| 65 | function onTargets (evt: CustomEvent<InspectTarget[]>): void { |
| 66 | if (JSON.stringify(evt.detail) === JSON.stringify(targets)) { |
| 67 | return |
| 68 | } |
| 69 | |
| 70 | setTargets(evt.detail) |
| 71 | |
| 72 | // if the main thread says we are connected to a peer but our state says we |
| 73 | // are not, try to init with the connected peer (this can happen after a |
| 74 | // page refresh) |
| 75 | if (evt.detail.find(t => t.status === 'connected') != null && status !== 'connected') { |
| 76 | onConnected(new CustomEvent<Error | undefined>('connected')) |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | events.addEventListener('targets', onTargets) |
| 81 | events.addEventListener('connected', onConnected) |
| 82 | |
| 83 | return () => { |
| 84 | events.removeEventListener('targets', onTargets) |
| 85 | events.removeEventListener('connected', onConnected) |
| 86 | } |
| 87 | }, [targets]) |
| 88 | |
| 89 | if (error != null) { |
| 90 | return ( |
| 91 | <FatalErrorPanel error={error} onBack={handleDisconnect} /> |
| 92 | ) |
| 93 | } |
| 94 | |
| 95 | if (status === 'connected') { |
| 96 | return ( |
| 97 | <> |
| 98 | <NodePanel targets={targets} onDisconnect={handleDisconnect} /> |
| 99 | <Inspector |
| 100 | metrics={metrics} |
| 101 | events={events} |
| 102 | /> |
| 103 | </> |
| 104 | ) |
| 105 | } |
| 106 | |
| 107 | return ( |
| 108 | <ConnectPanel targets={targets} onConnect={handleConnect} onCancelConnect={handleCancelConnect} /> |
| 109 | ) |
| 110 | } |
| 111 | |
| 112 | // create RPC instance |
| 113 | const r = rpc({ |
| 114 | valueCodecs |
| 115 | }) |
| 116 | |
| 117 | // create RPC client to send invocations to inspector-metrics |
| 118 | const metrics = r.createClient<MetricsRPC>('metrics', { |
| 119 | timeout: RPC_TIMEOUT |
| 120 | }) |
| 121 | |
| 122 | // create event emitter to receive events from inspector-metrics |
| 123 | const events = new TypedEventEmitter() |
| 124 | |
| 125 | r.createTarget('inspector', events) |
| 126 | |
| 127 | // receive messages |
| 128 | const ipc = rendererIPC() |
| 129 | const ipcSource = pushable() |
| 130 | ipc.onRPC((buf) => { |
| 131 | ipcSource.push(buf) |
| 132 | }) |
| 133 | |
| 134 | // register for updates from main thread |
| 135 | ipc.onTargets((targets) => { |
| 136 | events.safeDispatchEvent('targets', { |
| 137 | detail: targets |
| 138 | }) |
| 139 | }) |
| 140 | |
| 141 | // called after connecting to a remote node |
| 142 | ipc.onConnected((err) => { |
| 143 | events.safeDispatchEvent('connected', { |
| 144 | detail: err |
| 145 | }) |
| 146 | }) |
| 147 | |
| 148 | // send and receive RPC messages |
| 149 | Promise.resolve() |
| 150 | .then(async () => { |
| 151 | await pipe( |
| 152 | ipcSource, |
| 153 | r, |
| 154 | async (source) => { |
| 155 | for await (const buf of source) { |
| 156 | ipc.sendRPC(buf) |
| 157 | } |
| 158 | } |
| 159 | ) |
| 160 | }) |
| 161 | .catch(err => { |
| 162 | // eslint-disable-next-line no-console |
| 163 | console.error('error while reading RPC messages', err) |
| 164 | }) |
| 165 | |
| 166 | function handleCopyToClipboard (value: string): void { |
| 167 | navigator.clipboard.writeText(value) |
| 168 | .catch(err => { |
| 169 | // eslint-disable-next-line no-console |
| 170 | console.error('could not write to clipboard', err) |
| 171 | }) |
| 172 | } |
| 173 | |
| 174 | const body = document.getElementsByTagName('body')[0] |
| 175 | |
| 176 | if (body != null) { |
| 177 | body.className = `${body.className} ${platform}` |
| 178 | } |
| 179 | |
| 180 | const app = document.getElementById('app') |
| 181 | |
| 182 | if (app != null) { |
| 183 | const root = createRoot(app) |
| 184 | root.render( |
| 185 | <> |
| 186 | <HandleCopyToClipboardContext.Provider value={handleCopyToClipboard}> |
| 187 | <App ipc={ipc} metrics={metrics} events={events} /> |
| 188 | </HandleCopyToClipboardContext.Provider> |
| 189 | </> |
| 190 | ) |
| 191 | } |