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/**
* WebSocketPlugin will allow us to get new data from the server
* without having to poll for changes on the frontend.
*
* This plugin is subscribed to host state property changes, which
* is indicated in the app header Power status.
*
* https://github.com/openbmc/docs/blob/b41aff0fabe137cdb0cfff584b5fe4a41c0c8e77/rest-api.md#event-subscription-protocol
*/
const WebSocketPlugin = store => {
let ws;
const data = {
paths: ['/xyz/openbmc_project/state/host0'],
interfaces: ['xyz.openbmc_project.State.Host']
};
const initWebSocket = () => {
ws = new WebSocket(`wss://${window.location.host}/subscribe`);
ws.onopen = () => {
ws.send(JSON.stringify(data));
};
ws.onerror = event => {
console.error(event);
};
ws.onmessage = event => {
const {
properties: { CurrentHostState, RequestedHostTransition } = {}
} = JSON.parse(event.data);
const hostState = CurrentHostState || RequestedHostTransition;
store.commit('global/setHostStatus', hostState);
};
};
store.subscribe(({ type }) => {
if (type === 'authentication/authSuccess') {
initWebSocket();
}
if (type === 'authentication/logout') {
if (ws) ws.close();
}
});
if (store.getters['authentication/isLoggedIn']) initWebSocket();
};
export default WebSocketPlugin;
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