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PadMessageHandler: Factor out duplicate bad USER_CHANGES handling 

This also fixes a double-count bug.
pull/5285/head
Richard Hansen 2021-11-16 15:45:48 -05:00
parent 85919ff914
commit 35b2aeb3b1
1 changed files with 3 additions and 16 deletions
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19
src/node/handler/PadMessageHandler.js
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@ -645,9 +645,6 @@ const handleUserChanges = async (socket, message) => {
// Afaik, it copies the new attributes from the changeset, to the global Attribute Pool
changeset = Changeset.moveOpsToNewPool(changeset, wireApool, pad.pool);
} catch (e) {
// There is an error in this changeset, so just refuse it
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
throw new Error(`Can't apply USER_CHANGES from Socket ${socket.id} because: ${e.message}`);
}
@ -673,15 +670,11 @@ const handleUserChanges = async (socket, message) => {
// prevent eplite from accepting it TODO: better send the client a NEW_CHANGES
// of that revision
if (baseRev + 1 === r && c === changeset) {
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
throw new Error("Won't apply USER_CHANGES, as it contains an already accepted changeset");
}
changeset = Changeset.follow(c, changeset, false, apool);
} catch (e) {
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
throw new Error(`Can't apply USER_CHANGES, because ${e.message}`);
}
}
@ -689,19 +682,11 @@ const handleUserChanges = async (socket, message) => {
const prevText = pad.text();
if (Changeset.oldLen(changeset) !== prevText.length) {
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
throw new Error(`Can't apply USER_CHANGES ${changeset} with oldLen ` +
`${Changeset.oldLen(changeset)} to document of length ${prevText.length}`);
}
try {
await pad.appendRevision(changeset, thisSession.author);
} catch (e) {
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
throw e;
}
await pad.appendRevision(changeset, thisSession.author);
const correctionChangeset = _correctMarkersInPad(pad.atext, pad.pool);
if (correctionChangeset) {
@ -716,6 +701,8 @@ const handleUserChanges = async (socket, message) => {
await exports.updatePadClients(pad);
} catch (err) {
socket.json.send({disconnect: 'badChangeset'});
stats.meter('failedChangesets').mark();
console.warn(err.stack || err);
}