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datastore

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This commit is contained in:
Jan Prochazka
2020-10-22 11:27:23 +02:00
parent 7681f9e1ec
commit 9adf7a6ae2
2 changed files with 27 additions and 6 deletions
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24
packages/api/src/utility/DatastoreProxy.js
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@@ -9,9 +9,9 @@ class DatastoreProxy {
this.requests = {};
this.handle_response = this.handle_response.bind(this);
this.handle_ping = this.handle_ping.bind(this);
this.notifyChangedCallback = null;
}
// handle_response({ msgid, rows }) {
handle_response({ msgid, rows }) {
const [resolve, reject] = this.requests[msgid];
resolve(rows);
@@ -20,6 +20,11 @@ class DatastoreProxy {
handle_ping() {}
handle_notify({ msgid }) {
const [resolve, reject] = this.requests[msgid];
resolve();
delete this.requests[msgid];
}
async ensureSubprocess() {
if (!this.subprocess) {
@@ -49,7 +54,22 @@ class DatastoreProxy {
return promise;
}
async notifyChanged() {}
async notifyChangedCore() {
const msgid = uuidv1();
const promise = new Promise((resolve, reject) => {
this.requests[msgid] = [resolve, reject];
this.subprocess.send({ msgtype: 'notify', msgid });
});
return promise;
}
async notifyChanged(callback) {
this.notifyChangedCallback = callback;
await this.notifyChangedCore();
const call = this.notifyChangedCallback;
this.notifyChangedCallback = null;
if (call) call();
}
}
module.exports = DatastoreProxy;