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70 lines
2.1 KiB
JavaScript
70 lines
2.1 KiB
JavaScript
/* eslint-disable
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camelcase,
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no-unused-vars,
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*/
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// TODO: This file was created by bulk-decaffeinate.
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// Fix any style issues and re-enable lint.
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/*
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* decaffeinate suggestions:
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* DS101: Remove unnecessary use of Array.from
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* DS102: Remove unnecessary code created because of implicit returns
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* DS207: Consider shorter variations of null checks
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* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
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*/
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let ShareJsDB;
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const Keys = require('./UpdateKeys');
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const RedisManager = require("./RedisManager");
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const Errors = require("./Errors");
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module.exports = (ShareJsDB = class ShareJsDB {
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constructor(project_id, doc_id, lines, version) {
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this.project_id = project_id;
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this.doc_id = doc_id;
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this.lines = lines;
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this.version = version;
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this.appliedOps = {};
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// ShareJS calls this detacted from the instance, so we need
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// bind it to keep our context that can access @appliedOps
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this.writeOp = this._writeOp.bind(this);
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}
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getOps(doc_key, start, end, callback) {
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if (start === end) {
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return callback(null, []);
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}
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// In redis, lrange values are inclusive.
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if (end != null) {
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end--;
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} else {
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end = -1;
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}
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const [project_id, doc_id] = Array.from(Keys.splitProjectIdAndDocId(doc_key));
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return RedisManager.getPreviousDocOps(doc_id, start, end, callback);
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}
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_writeOp(doc_key, opData, callback) {
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if (this.appliedOps[doc_key] == null) { this.appliedOps[doc_key] = []; }
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this.appliedOps[doc_key].push(opData);
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return callback();
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}
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getSnapshot(doc_key, callback) {
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if (doc_key !== Keys.combineProjectIdAndDocId(this.project_id, this.doc_id)) {
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return callback(new Errors.NotFoundError(`unexpected doc_key ${doc_key}, expected ${Keys.combineProjectIdAndDocId(this.project_id, this.doc_id)}`));
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} else {
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return callback(null, {
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snapshot: this.lines.join("\n"),
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v: parseInt(this.version, 10),
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type: "text"
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});
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}
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}
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// To be able to remove a doc from the ShareJS memory
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// we need to called Model::delete, which calls this
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// method on the database. However, we will handle removing
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// it from Redis ourselves
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delete(docName, dbMeta, callback) { return callback(); }
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});
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