rxdb
Version:
A local-first realtime NoSQL Database for JavaScript applications - https://rxdb.info/
45 lines (44 loc) • 1.71 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.resolveConflictError = resolveConflictError;
var _index = require("../plugins/utils/index.js");
/**
* Resolves a conflict error or determines that the given document states are equal.
* Returns the resolved document that must be written to the fork.
* Then the new document state can be pushed upstream.
* If document is not in conflict, returns undefined.
* If error is non-409, it throws an error.
* Conflicts are only solved in the upstream, never in the downstream.
*/
async function resolveConflictError(state, input, forkState) {
var conflictHandler = state.input.conflictHandler;
var isEqual = conflictHandler.isEqual(input.realMasterState, input.newDocumentState, 'replication-resolve-conflict');
if (isEqual) {
/**
* Documents are equal,
* so this is not a conflict -> do nothing.
*/
return undefined;
} else {
var resolved = await conflictHandler.resolve(input, 'replication-resolve-conflict');
/**
* We have a resolved conflict,
* use the resolved document data.
*/
var resolvedDoc = Object.assign({}, resolved, {
/**
* Because the resolved conflict is written to the fork,
* we have to keep/update the forks _meta data, not the masters.
*/
_meta: (0, _index.flatClone)(forkState._meta),
_rev: (0, _index.getDefaultRevision)(),
_attachments: (0, _index.flatClone)(forkState._attachments)
});
resolvedDoc._meta.lwt = (0, _index.now)();
resolvedDoc._rev = (0, _index.createRevision)(await state.checkpointKey, forkState);
return resolvedDoc;
}
}
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