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author | wolfbeast <mcwerewolf@gmail.com> | 2018-10-06 06:57:51 +0200 |
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committer | wolfbeast <mcwerewolf@gmail.com> | 2018-10-06 06:57:51 +0200 |
commit | 0c47c83e1b3b7d95681a43fbb0de0e17b2cd5b25 (patch) | |
tree | c321601f04cbfd02fb6e12878e745dc49a612c86 /services/sync/modules/collection_validator.js | |
parent | 8860eddcee1417483cafd114f3a9ec127e0f1f74 (diff) | |
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Import Tycho weave client
Diffstat (limited to 'services/sync/modules/collection_validator.js')
-rw-r--r-- | services/sync/modules/collection_validator.js | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/services/sync/modules/collection_validator.js b/services/sync/modules/collection_validator.js deleted file mode 100644 index 41141bba3..000000000 --- a/services/sync/modules/collection_validator.js +++ /dev/null @@ -1,204 +0,0 @@ -/* This Source Code Form is subject to the terms of the Mozilla Public - * License, v. 2.0. If a copy of the MPL was not distributed with this file, - * You can obtain one at http://mozilla.org/MPL/2.0/. */ - -"use strict"; - -const Cu = Components.utils; - -Cu.import("resource://services-sync/record.js"); -Cu.import("resource://services-sync/main.js"); - -this.EXPORTED_SYMBOLS = ["CollectionValidator", "CollectionProblemData"]; - -class CollectionProblemData { - constructor() { - this.missingIDs = 0; - this.duplicates = []; - this.clientMissing = []; - this.serverMissing = []; - this.serverDeleted = []; - this.serverUnexpected = []; - this.differences = []; - } - - /** - * Produce a list summarizing problems found. Each entry contains {name, count}, - * where name is the field name for the problem, and count is the number of times - * the problem was encountered. - * - * Validation has failed if all counts are not 0. - */ - getSummary() { - return [ - { name: "clientMissing", count: this.clientMissing.length }, - { name: "serverMissing", count: this.serverMissing.length }, - { name: "serverDeleted", count: this.serverDeleted.length }, - { name: "serverUnexpected", count: this.serverUnexpected.length }, - { name: "differences", count: this.differences.length }, - { name: "missingIDs", count: this.missingIDs }, - { name: "duplicates", count: this.duplicates.length } - ]; - } -} - -class CollectionValidator { - // Construct a generic collection validator. This is intended to be called by - // subclasses. - // - name: Name of the engine - // - idProp: Property that identifies a record. That is, if a client and server - // record have the same value for the idProp property, they should be - // compared against eachother. - // - props: Array of properties that should be compared - constructor(name, idProp, props) { - this.name = name; - this.props = props; - this.idProp = idProp; - } - - // Should a custom ProblemData type be needed, return it here. - emptyProblemData() { - return new CollectionProblemData(); - } - - getServerItems(engine) { - let collection = engine.itemSource(); - let collectionKey = engine.service.collectionKeys.keyForCollection(engine.name); - collection.full = true; - let items = []; - collection.recordHandler = function(item) { - item.decrypt(collectionKey); - items.push(item.cleartext); - }; - let resp = collection.getBatched(); - if (!resp.success) { - throw resp; - } - return items; - } - - // Should return a promise that resolves to an array of client items. - getClientItems() { - return Promise.reject("Must implement"); - } - - // Turn the client item into something that can be compared with the server item, - // and is also safe to mutate. - normalizeClientItem(item) { - return Cu.cloneInto(item, {}); - } - - // Turn the server item into something that can be easily compared with the client - // items. - normalizeServerItem(item) { - return item; - } - - // Return whether or not a server item should be present on the client. Expected - // to be overridden. - clientUnderstands(item) { - return true; - } - - // Return whether or not a client item should be present on the server. Expected - // to be overridden - syncedByClient(item) { - return true; - } - - // Compare the server item and the client item, and return a list of property - // names that are different. Can be overridden if needed. - getDifferences(client, server) { - let differences = []; - for (let prop of this.props) { - let clientProp = client[prop]; - let serverProp = server[prop]; - if ((clientProp || "") !== (serverProp || "")) { - differences.push(prop); - } - } - return differences; - } - - // Returns an object containing - // problemData: an instance of the class returned by emptyProblemData(), - // clientRecords: Normalized client records - // records: Normalized server records, - // deletedRecords: Array of ids that were marked as deleted by the server. - compareClientWithServer(clientItems, serverItems) { - clientItems = clientItems.map(item => this.normalizeClientItem(item)); - serverItems = serverItems.map(item => this.normalizeServerItem(item)); - let problems = this.emptyProblemData(); - let seenServer = new Map(); - let serverDeleted = new Set(); - let allRecords = new Map(); - - for (let record of serverItems) { - let id = record[this.idProp]; - if (!id) { - ++problems.missingIDs; - continue; - } - if (record.deleted) { - serverDeleted.add(record); - } else { - let possibleDupe = seenServer.get(id); - if (possibleDupe) { - problems.duplicates.push(id); - } else { - seenServer.set(id, record); - allRecords.set(id, { server: record, client: null, }); - } - record.understood = this.clientUnderstands(record); - } - } - - let recordPairs = []; - let seenClient = new Map(); - for (let record of clientItems) { - let id = record[this.idProp]; - record.shouldSync = this.syncedByClient(record); - seenClient.set(id, record); - let combined = allRecords.get(id); - if (combined) { - combined.client = record; - } else { - allRecords.set(id, { client: record, server: null }); - } - } - - for (let [id, { server, client }] of allRecords) { - if (!client && !server) { - throw new Error("Impossible: no client or server record for " + id); - } else if (server && !client) { - if (server.understood) { - problems.clientMissing.push(id); - } - } else if (client && !server) { - if (client.shouldSync) { - problems.serverMissing.push(id); - } - } else { - if (!client.shouldSync) { - if (!problems.serverUnexpected.includes(id)) { - problems.serverUnexpected.push(id); - } - continue; - } - let differences = this.getDifferences(client, server); - if (differences && differences.length) { - problems.differences.push({ id, differences }); - } - } - } - return { - problemData: problems, - clientRecords: clientItems, - records: serverItems, - deletedRecords: [...serverDeleted] - }; - } -} - -// Default to 0, some engines may override. -CollectionValidator.prototype.version = 0; |