hermes-agent/apps/desktop/electron/preload.cjs
teknium1 cadb74adad fix(desktop): recover chat after sleep/wake by revalidating a stale remote backend
After sleep/wake, a remote (global-remote) primary backend can become
unreachable, but it has no child process whose 'exit' clears the main
process's cached connectionPromise. The renderer then re-dials the same
dead remote forever and the composer stays stuck on "Starting Hermes…";
only a quit+reopen recovered.

Fix: the renderer's existing backoff-paced reconnect loop now asks the
main process to revalidate the cached connection before re-dialing. The
main process liveness-probes the cached REMOTE backend's public
/api/status and, if unreachable, drops the cache (resetHermesConnection
only nulls connectionPromise for a remote — no child to SIGTERM) so the
next getConnection() rebuilds a reachable descriptor. Local backends are
never touched here; they self-heal via the child 'exit' handler. The
renderer's loop already provides retry pacing and rides out transient
blips, so no streak/episode bookkeeping is needed in the main process.

The boot hook dismisses the boot-progress overlay on the post-rebuild
'open' so an in-place rebuild can't leave it stuck at ~94%.

Reimplements #40135 by @AlchemistChaos on a smaller, more interpretable
path (63 added lines vs 555): no extracted helper module, no
failure-streak / episode-window state, the renderer's backoff loop is
the retry mechanism. Original diagnosis and fix by @AlchemistChaos.

Co-authored-by: AlchemistChaos <alchemistchaos@protonmail.com>
2026-06-07 17:29:12 -07:00

136 lines
7.3 KiB
JavaScript

const { contextBridge, ipcRenderer, webUtils } = require('electron')
contextBridge.exposeInMainWorld('hermesDesktop', {
getConnection: profile => ipcRenderer.invoke('hermes:connection', profile),
revalidateConnection: () => ipcRenderer.invoke('hermes:connection:revalidate'),
touchBackend: profile => ipcRenderer.invoke('hermes:backend:touch', profile),
getGatewayWsUrl: profile => ipcRenderer.invoke('hermes:gateway:ws-url', profile),
getBootProgress: () => ipcRenderer.invoke('hermes:boot-progress:get'),
getConnectionConfig: profile => ipcRenderer.invoke('hermes:connection-config:get', profile),
saveConnectionConfig: payload => ipcRenderer.invoke('hermes:connection-config:save', payload),
applyConnectionConfig: payload => ipcRenderer.invoke('hermes:connection-config:apply', payload),
testConnectionConfig: payload => ipcRenderer.invoke('hermes:connection-config:test', payload),
probeConnectionConfig: remoteUrl => ipcRenderer.invoke('hermes:connection-config:probe', remoteUrl),
oauthLoginConnectionConfig: remoteUrl => ipcRenderer.invoke('hermes:connection-config:oauth-login', remoteUrl),
oauthLogoutConnectionConfig: remoteUrl => ipcRenderer.invoke('hermes:connection-config:oauth-logout', remoteUrl),
profile: {
get: () => ipcRenderer.invoke('hermes:profile:get'),
set: name => ipcRenderer.invoke('hermes:profile:set', name)
},
api: request => ipcRenderer.invoke('hermes:api', request),
notify: payload => ipcRenderer.invoke('hermes:notify', payload),
requestMicrophoneAccess: () => ipcRenderer.invoke('hermes:requestMicrophoneAccess'),
readFileDataUrl: filePath => ipcRenderer.invoke('hermes:readFileDataUrl', filePath),
readFileText: filePath => ipcRenderer.invoke('hermes:readFileText', filePath),
selectPaths: options => ipcRenderer.invoke('hermes:selectPaths', options),
writeClipboard: text => ipcRenderer.invoke('hermes:writeClipboard', text),
saveImageFromUrl: url => ipcRenderer.invoke('hermes:saveImageFromUrl', url),
saveImageBuffer: (data, ext) => ipcRenderer.invoke('hermes:saveImageBuffer', { data, ext }),
saveClipboardImage: () => ipcRenderer.invoke('hermes:saveClipboardImage'),
getPathForFile: file => {
try {
return webUtils.getPathForFile(file) || ''
} catch {
return ''
}
},
normalizePreviewTarget: (target, baseDir) => ipcRenderer.invoke('hermes:normalizePreviewTarget', target, baseDir),
watchPreviewFile: url => ipcRenderer.invoke('hermes:watchPreviewFile', url),
stopPreviewFileWatch: id => ipcRenderer.invoke('hermes:stopPreviewFileWatch', id),
setTitleBarTheme: payload => ipcRenderer.send('hermes:titlebar-theme', payload),
setPreviewShortcutActive: active => ipcRenderer.send('hermes:previewShortcutActive', Boolean(active)),
openExternal: url => ipcRenderer.invoke('hermes:openExternal', url),
fetchLinkTitle: url => ipcRenderer.invoke('hermes:fetchLinkTitle', url),
settings: {
getDefaultProjectDir: () => ipcRenderer.invoke('hermes:setting:defaultProjectDir:get'),
setDefaultProjectDir: dir => ipcRenderer.invoke('hermes:setting:defaultProjectDir:set', dir),
pickDefaultProjectDir: () => ipcRenderer.invoke('hermes:setting:defaultProjectDir:pick')
},
revealLogs: () => ipcRenderer.invoke('hermes:logs:reveal'),
getRecentLogs: () => ipcRenderer.invoke('hermes:logs:recent'),
readDir: dirPath => ipcRenderer.invoke('hermes:fs:readDir', dirPath),
gitRoot: startPath => ipcRenderer.invoke('hermes:fs:gitRoot', startPath),
terminal: {
dispose: id => ipcRenderer.invoke('hermes:terminal:dispose', id),
resize: (id, size) => ipcRenderer.invoke('hermes:terminal:resize', id, size),
start: options => ipcRenderer.invoke('hermes:terminal:start', options),
write: (id, data) => ipcRenderer.invoke('hermes:terminal:write', id, data),
onData: (id, callback) => {
const channel = `hermes:terminal:${id}:data`
const listener = (_event, payload) => callback(payload)
ipcRenderer.on(channel, listener)
return () => ipcRenderer.removeListener(channel, listener)
},
onExit: (id, callback) => {
const channel = `hermes:terminal:${id}:exit`
const listener = (_event, payload) => callback(payload)
ipcRenderer.on(channel, listener)
return () => ipcRenderer.removeListener(channel, listener)
}
},
onClosePreviewRequested: callback => {
const listener = () => callback()
ipcRenderer.on('hermes:close-preview-requested', listener)
return () => ipcRenderer.removeListener('hermes:close-preview-requested', listener)
},
onOpenUpdatesRequested: callback => {
const listener = () => callback()
ipcRenderer.on('hermes:open-updates', listener)
return () => ipcRenderer.removeListener('hermes:open-updates', listener)
},
onWindowStateChanged: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:window-state-changed', listener)
return () => ipcRenderer.removeListener('hermes:window-state-changed', listener)
},
onPreviewFileChanged: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:preview-file-changed', listener)
return () => ipcRenderer.removeListener('hermes:preview-file-changed', listener)
},
onBackendExit: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:backend-exit', listener)
return () => ipcRenderer.removeListener('hermes:backend-exit', listener)
},
onPowerResume: callback => {
const listener = () => callback()
ipcRenderer.on('hermes:power-resume', listener)
return () => ipcRenderer.removeListener('hermes:power-resume', listener)
},
onBootProgress: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:boot-progress', listener)
return () => ipcRenderer.removeListener('hermes:boot-progress', listener)
},
// First-launch bootstrap progress -- emitted by the install.ps1 stage
// runner in main.cjs (apps/desktop/electron/bootstrap-runner.cjs).
// Renderer's install overlay subscribes to live events and queries the
// current snapshot via getBootstrapState() to recover after a devtools
// reload mid-bootstrap.
getBootstrapState: () => ipcRenderer.invoke('hermes:bootstrap:get'),
resetBootstrap: () => ipcRenderer.invoke('hermes:bootstrap:reset'),
repairBootstrap: () => ipcRenderer.invoke('hermes:bootstrap:repair'),
cancelBootstrap: () => ipcRenderer.invoke('hermes:bootstrap:cancel'),
onBootstrapEvent: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:bootstrap:event', listener)
return () => ipcRenderer.removeListener('hermes:bootstrap:event', listener)
},
getVersion: () => ipcRenderer.invoke('hermes:version'),
uninstall: {
summary: () => ipcRenderer.invoke('hermes:uninstall:summary'),
run: mode => ipcRenderer.invoke('hermes:uninstall:run', { mode })
},
updates: {
check: () => ipcRenderer.invoke('hermes:updates:check'),
apply: opts => ipcRenderer.invoke('hermes:updates:apply', opts),
getBranch: () => ipcRenderer.invoke('hermes:updates:branch:get'),
setBranch: name => ipcRenderer.invoke('hermes:updates:branch:set', name),
onProgress: callback => {
const listener = (_event, payload) => callback(payload)
ipcRenderer.on('hermes:updates:progress', listener)
return () => ipcRenderer.removeListener('hermes:updates:progress', listener)
}
}
})