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gecko-dev/services/common/modules-testing/storageserver.js

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JavaScript
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/* 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/. */
/**
* This file contains an implementation of the Storage Server in JavaScript.
*
* The server should not be used for any production purposes.
*/
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
this.EXPORTED_SYMBOLS = [
"ServerBSO",
"StorageServerCallback",
"StorageServerCollection",
"StorageServer",
"storageServerForUsers",
];
Cu.import("resource://testing-common/httpd.js");
Cu.import("resource://services-common/async.js");
Cu.import("resource://gre/modules/Log.jsm");
Cu.import("resource://services-common/utils.js");
const STORAGE_HTTP_LOGGER = "Services.Common.Test.Server";
const STORAGE_API_VERSION = "2.0";
// Use the same method that record.js does, which mirrors the server.
function new_timestamp() {
return Math.round(Date.now());
}
function isInteger(s) {
let re = /^[0-9]+$/;
return re.test(s);
}
function writeHttpBody(response, body) {
if (!body) {
return;
}
response.bodyOutputStream.write(body, body.length);
}
function sendMozSvcError(request, response, code) {
response.setStatusLine(request.httpVersion, 400, "Bad Request");
response.setHeader("Content-Type", "text/plain", false);
response.bodyOutputStream.write(code, code.length);
}
/**
* Represent a BSO on the server.
*
* A BSO is constructed from an ID, content, and a modified time.
*
* @param id
* (string) ID of the BSO being created.
* @param payload
* (strong|object) Payload for the BSO. Should ideally be a string. If
* an object is passed, it will be fed into JSON.stringify and that
* output will be set as the payload.
* @param modified
* (number) Milliseconds since UNIX epoch that the BSO was last
* modified. If not defined or null, the current time will be used.
*/
this.ServerBSO = function ServerBSO(id, payload, modified) {
if (!id) {
throw new Error("No ID for ServerBSO!");
}
if (!id.match(/^[a-zA-Z0-9_-]{1,64}$/)) {
throw new Error("BSO ID is invalid: " + id);
}
this._log = Log.repository.getLogger(STORAGE_HTTP_LOGGER);
this.id = id;
if (!payload) {
return;
}
CommonUtils.ensureMillisecondsTimestamp(modified);
if (typeof payload == "object") {
payload = JSON.stringify(payload);
}
this.payload = payload;
this.modified = modified || new_timestamp();
}
ServerBSO.prototype = {
FIELDS: [
"id",
"modified",
"payload",
"ttl",
"sortindex",
],
toJSON: function toJSON() {
let obj = {};
for each (let key in this.FIELDS) {
if (this[key] !== undefined) {
obj[key] = this[key];
}
}
return obj;
},
delete: function delete_() {
this.deleted = true;
delete this.payload;
delete this.modified;
},
/**
* Handler for GET requests for this BSO.
*/
getHandler: function getHandler(request, response) {
let code = 200;
let status = "OK";
let body;
function sendResponse() {
response.setStatusLine(request.httpVersion, code, status);
writeHttpBody(response, body);
}
if (request.hasHeader("x-if-modified-since")) {
let headerModified = parseInt(request.getHeader("x-if-modified-since"),
10);
CommonUtils.ensureMillisecondsTimestamp(headerModified);
if (headerModified >= this.modified) {
code = 304;
status = "Not Modified";
sendResponse();
return;
}
} else if (request.hasHeader("x-if-unmodified-since")) {
let requestModified = parseInt(request.getHeader("x-if-unmodified-since"),
10);
let serverModified = this.modified;
if (serverModified > requestModified) {
code = 412;
status = "Precondition Failed";
sendResponse();
return;
}
}
if (!this.deleted) {
body = JSON.stringify(this.toJSON());
response.setHeader("Content-Type", "application/json", false);
response.setHeader("X-Last-Modified", "" + this.modified, false);
} else {
code = 404;
status = "Not Found";
}
sendResponse();
},
/**
* Handler for PUT requests for this BSO.
*/
putHandler: function putHandler(request, response) {
if (request.hasHeader("Content-Type")) {
let ct = request.getHeader("Content-Type");
if (ct != "application/json") {
throw HTTP_415;
}
}
let input = CommonUtils.readBytesFromInputStream(request.bodyInputStream);
let parsed;
try {
parsed = JSON.parse(input);
} catch (ex) {
return sendMozSvcError(request, response, "8");
}
if (typeof(parsed) != "object") {
return sendMozSvcError(request, response, "8");
}
// Don't update if a conditional request fails preconditions.
if (request.hasHeader("x-if-unmodified-since")) {
let reqModified = parseInt(request.getHeader("x-if-unmodified-since"));
if (reqModified < this.modified) {
response.setStatusLine(request.httpVersion, 412, "Precondition Failed");
return;
}
}
let code, status;
if (this.payload) {
code = 204;
status = "No Content";
} else {
code = 201;
status = "Created";
}
// Alert when we see unrecognized fields.
for (let [key, value] in Iterator(parsed)) {
switch (key) {
case "payload":
if (typeof(value) != "string") {
sendMozSvcError(request, response, "8");
return true;
}
this.payload = value;
break;
case "ttl":
if (!isInteger(value)) {
sendMozSvcError(request, response, "8");
return true;
}
this.ttl = parseInt(value, 10);
break;
case "sortindex":
if (!isInteger(value) || value.length > 9) {
sendMozSvcError(request, response, "8");
return true;
}
this.sortindex = parseInt(value, 10);
break;
case "id":
break;
default:
this._log.warn("Unexpected field in BSO record: " + key);
sendMozSvcError(request, response, "8");
return true;
}
}
this.modified = request.timestamp;
this.deleted = false;
response.setHeader("X-Last-Modified", "" + this.modified, false);
response.setStatusLine(request.httpVersion, code, status);
},
};
/**
* Represent a collection on the server.
*
* The '_bsos' attribute is a mapping of id -> ServerBSO objects.
*
* Note that if you want these records to be accessible individually,
* you need to register their handlers with the server separately, or use a
* containing HTTP server that will do so on your behalf.
*
* @param bsos
* An object mapping BSO IDs to ServerBSOs.
* @param acceptNew
* If true, POSTs to this collection URI will result in new BSOs being
* created and wired in on the fly.
* @param timestamp
* An optional timestamp value to initialize the modified time of the
* collection. This should be in the format returned by new_timestamp().
*/
this.StorageServerCollection =
function StorageServerCollection(bsos, acceptNew, timestamp=new_timestamp()) {
this._bsos = bsos || {};
this.acceptNew = acceptNew || false;
/*
* Track modified timestamp.
* We can't just use the timestamps of contained BSOs: an empty collection
* has a modified time.
*/
CommonUtils.ensureMillisecondsTimestamp(timestamp);
this._timestamp = timestamp;
this._log = Log.repository.getLogger(STORAGE_HTTP_LOGGER);
}
StorageServerCollection.prototype = {
BATCH_MAX_COUNT: 100, // # of records.
BATCH_MAX_SIZE: 1024 * 1024, // # bytes.
_timestamp: null,
get timestamp() {
return this._timestamp;
},
set timestamp(timestamp) {
CommonUtils.ensureMillisecondsTimestamp(timestamp);
this._timestamp = timestamp;
},
get totalPayloadSize() {
let size = 0;
for each (let bso in this.bsos()) {
size += bso.payload.length;
}
return size;
},
/**
* Convenience accessor for our BSO keys.
* Excludes deleted items, of course.
*
* @param filter
* A predicate function (applied to the ID and BSO) which dictates
* whether to include the BSO's ID in the output.
*
* @return an array of IDs.
*/
keys: function keys(filter) {
return [id for ([id, bso] in Iterator(this._bsos))
if (!bso.deleted && (!filter || filter(id, bso)))];
},
/**
* Convenience method to get an array of BSOs.
* Optionally provide a filter function.
*
* @param filter
* A predicate function, applied to the BSO, which dictates whether to
* include the BSO in the output.
*
* @return an array of ServerBSOs.
*/
bsos: function bsos(filter) {
let os = [bso for ([id, bso] in Iterator(this._bsos))
if (!bso.deleted)];
if (!filter) {
return os;
}
return os.filter(filter);
},
/**
* Obtain a BSO by ID.
*/
bso: function bso(id) {
return this._bsos[id];
},
/**
* Obtain the payload of a specific BSO.
*
* Raises if the specified BSO does not exist.
*/
payload: function payload(id) {
return this.bso(id).payload;
},
/**
* Insert the provided BSO under its ID.
*
* @return the provided BSO.
*/
insertBSO: function insertBSO(bso) {
return this._bsos[bso.id] = bso;
},
/**
* Insert the provided payload as part of a new ServerBSO with the provided
* ID.
*
* @param id
* The GUID for the BSO.
* @param payload
* The payload, as provided to the ServerBSO constructor.
* @param modified
* An optional modified time for the ServerBSO. If not specified, the
* current time will be used.
*
* @return the inserted BSO.
*/
insert: function insert(id, payload, modified) {
return this.insertBSO(new ServerBSO(id, payload, modified));
},
/**
* Removes an object entirely from the collection.
*
* @param id
* (string) ID to remove.
*/
remove: function remove(id) {
delete this._bsos[id];
},
_inResultSet: function _inResultSet(bso, options) {
if (!bso.payload) {
return false;
}
if (options.ids) {
if (options.ids.indexOf(bso.id) == -1) {
return false;
}
}
if (options.newer) {
if (bso.modified <= options.newer) {
return false;
}
}
if (options.older) {
if (bso.modified >= options.older) {
return false;
}
}
return true;
},
count: function count(options) {
options = options || {};
let c = 0;
for (let [id, bso] in Iterator(this._bsos)) {
if (bso.modified && this._inResultSet(bso, options)) {
c++;
}
}
return c;
},
get: function get(options) {
let data = [];
for each (let bso in this._bsos) {
if (!bso.modified) {
continue;
}
if (!this._inResultSet(bso, options)) {
continue;
}
data.push(bso);
}
if (options.sort) {
if (options.sort == "oldest") {
data.sort(function sortOldest(a, b) {
if (a.modified == b.modified) {
return 0;
}
return a.modified < b.modified ? -1 : 1;
});
} else if (options.sort == "newest") {
data.sort(function sortNewest(a, b) {
if (a.modified == b.modified) {
return 0;
}
return a.modified > b.modified ? -1 : 1;
});
} else if (options.sort == "index") {
data.sort(function sortIndex(a, b) {
if (a.sortindex == b.sortindex) {
return 0;
}
if (a.sortindex !== undefined && b.sortindex == undefined) {
return 1;
}
if (a.sortindex === undefined && b.sortindex !== undefined) {
return -1;
}
return a.sortindex > b.sortindex ? -1 : 1;
});
}
}
if (options.limit) {
data = data.slice(0, options.limit);
}
return data;
},
post: function post(input, timestamp) {
let success = [];
let failed = {};
let count = 0;
let size = 0;
// This will count records where we have an existing ServerBSO
// registered with us as successful and all other records as failed.
for each (let record in input) {
count += 1;
if (count > this.BATCH_MAX_COUNT) {
failed[record.id] = "Max record count exceeded.";
continue;
}
if (typeof(record.payload) != "string") {
failed[record.id] = "Payload is not a string!";
continue;
}
size += record.payload.length;
if (size > this.BATCH_MAX_SIZE) {
failed[record.id] = "Payload max size exceeded!";
continue;
}
if (record.sortindex) {
if (!isInteger(record.sortindex)) {
failed[record.id] = "sortindex is not an integer.";
continue;
}
if (record.sortindex.length > 9) {
failed[record.id] = "sortindex is too long.";
continue;
}
}
if ("ttl" in record) {
if (!isInteger(record.ttl)) {
failed[record.id] = "ttl is not an integer.";
continue;
}
}
try {
let bso = this.bso(record.id);
if (!bso && this.acceptNew) {
this._log.debug("Creating BSO " + JSON.stringify(record.id) +
" on the fly.");
bso = new ServerBSO(record.id);
this.insertBSO(bso);
}
if (bso) {
bso.payload = record.payload;
bso.modified = timestamp;
bso.deleted = false;
success.push(record.id);
if (record.sortindex) {
bso.sortindex = parseInt(record.sortindex, 10);
}
} else {
failed[record.id] = "no bso configured";
}
} catch (ex) {
this._log.info("Exception when processing BSO: " +
CommonUtils.exceptionStr(ex));
failed[record.id] = "Exception when processing.";
}
}
return {success: success, failed: failed};
},
delete: function delete_(options) {
options = options || {};
// Protocol 2.0 only allows the "ids" query string argument.
let keys = Object.keys(options).filter(function(k) {
return k != "ids";
});
if (keys.length) {
this._log.warn("Invalid query string parameter to collection delete: " +
keys.join(", "));
throw new Error("Malformed client request.");
}
if (options.ids && options.ids.length > this.BATCH_MAX_COUNT) {
throw HTTP_400;
}
let deleted = [];
for (let [id, bso] in Iterator(this._bsos)) {
if (this._inResultSet(bso, options)) {
this._log.debug("Deleting " + JSON.stringify(bso));
deleted.push(bso.id);
bso.delete();
}
}
return deleted;
},
parseOptions: function parseOptions(request) {
let options = {};
for each (let chunk in request.queryString.split("&")) {
if (!chunk) {
continue;
}
chunk = chunk.split("=");
let key = decodeURIComponent(chunk[0]);
if (chunk.length == 1) {
options[key] = "";
} else {
options[key] = decodeURIComponent(chunk[1]);
}
}
if (options.ids) {
options.ids = options.ids.split(",");
}
if (options.newer) {
if (!isInteger(options.newer)) {
throw HTTP_400;
}
CommonUtils.ensureMillisecondsTimestamp(options.newer);
options.newer = parseInt(options.newer, 10);
}
if (options.older) {
if (!isInteger(options.older)) {
throw HTTP_400;
}
CommonUtils.ensureMillisecondsTimestamp(options.older);
options.older = parseInt(options.older, 10);
}
if (options.limit) {
if (!isInteger(options.limit)) {
throw HTTP_400;
}
options.limit = parseInt(options.limit, 10);
}
return options;
},
getHandler: function getHandler(request, response) {
let options = this.parseOptions(request);
let data = this.get(options);
if (request.hasHeader("x-if-modified-since")) {
let requestModified = parseInt(request.getHeader("x-if-modified-since"),
10);
let newestBSO = 0;
for each (let bso in data) {
if (bso.modified > newestBSO) {
newestBSO = bso.modified;
}
}
if (requestModified >= newestBSO) {
response.setHeader("X-Last-Modified", "" + newestBSO);
response.setStatusLine(request.httpVersion, 304, "Not Modified");
return;
}
} else if (request.hasHeader("x-if-unmodified-since")) {
let requestModified = parseInt(request.getHeader("x-if-unmodified-since"),
10);
let serverModified = this.timestamp;
if (serverModified > requestModified) {
response.setHeader("X-Last-Modified", "" + serverModified);
response.setStatusLine(request.httpVersion, 412, "Precondition Failed");
return;
}
}
if (options.full) {
data = data.map(function map(bso) {
return bso.toJSON();
});
} else {
data = data.map(function map(bso) {
return bso.id;
});
}
// application/json is default media type.
let newlines = false;
if (request.hasHeader("accept")) {
let accept = request.getHeader("accept");
if (accept == "application/newlines") {
newlines = true;
} else if (accept != "application/json") {
throw HTTP_406;
}
}
let body;
if (newlines) {
response.setHeader("Content-Type", "application/newlines", false);
let normalized = data.map(function map(d) {
return JSON.stringify(d);
});
body = normalized.join("\n") + "\n";
} else {
response.setHeader("Content-Type", "application/json", false);
body = JSON.stringify({items: data});
}
this._log.info("Records: " + data.length);
response.setHeader("X-Num-Records", "" + data.length, false);
response.setHeader("X-Last-Modified", "" + this.timestamp, false);
response.setStatusLine(request.httpVersion, 200, "OK");
response.bodyOutputStream.write(body, body.length);
},
postHandler: function postHandler(request, response) {
let options = this.parseOptions(request);
if (!request.hasHeader("content-type")) {
this._log.info("No Content-Type request header!");
throw HTTP_400;
}
let inputStream = request.bodyInputStream;
let inputBody = CommonUtils.readBytesFromInputStream(inputStream);
let input = [];
let inputMediaType = request.getHeader("content-type");
if (inputMediaType == "application/json") {
try {
input = JSON.parse(inputBody);
} catch (ex) {
this._log.info("JSON parse error on input body!");
throw HTTP_400;
}
if (!Array.isArray(input)) {
this._log.info("Input JSON type not an array!");
return sendMozSvcError(request, response, "8");
}
} else if (inputMediaType == "application/newlines") {
for each (let line in inputBody.split("\n")) {
let record;
try {
record = JSON.parse(line);
} catch (ex) {
this._log.info("JSON parse error on line!");
return sendMozSvcError(request, response, "8");
}
input.push(record);
}
} else {
this._log.info("Unknown media type: " + inputMediaType);
throw HTTP_415;
}
if (this._ensureUnmodifiedSince(request, response)) {
return;
}
let res = this.post(input, request.timestamp);
let body = JSON.stringify(res);
response.setHeader("Content-Type", "application/json", false);
this.timestamp = request.timestamp;
response.setHeader("X-Last-Modified", "" + this.timestamp, false);
response.setStatusLine(request.httpVersion, "200", "OK");
response.bodyOutputStream.write(body, body.length);
},
deleteHandler: function deleteHandler(request, response) {
this._log.debug("Invoking StorageServerCollection.DELETE.");
let options = this.parseOptions(request);
if (this._ensureUnmodifiedSince(request, response)) {
return;
}
let deleted = this.delete(options);
response.deleted = deleted;
this.timestamp = request.timestamp;
response.setStatusLine(request.httpVersion, 204, "No Content");
},
handler: function handler() {
let self = this;
return function(request, response) {
switch(request.method) {
case "GET":
return self.getHandler(request, response);
case "POST":
return self.postHandler(request, response);
case "DELETE":
return self.deleteHandler(request, response);
}
request.setHeader("Allow", "GET,POST,DELETE");
response.setStatusLine(request.httpVersion, 405, "Method Not Allowed");
};
},
_ensureUnmodifiedSince: function _ensureUnmodifiedSince(request, response) {
if (!request.hasHeader("x-if-unmodified-since")) {
return false;
}
let requestModified = parseInt(request.getHeader("x-if-unmodified-since"),
10);
let serverModified = this.timestamp;
this._log.debug("Request modified time: " + requestModified +
"; Server modified time: " + serverModified);
if (serverModified <= requestModified) {
return false;
}
this._log.info("Conditional request rejected because client time older " +
"than collection timestamp.");
response.setStatusLine(request.httpVersion, 412, "Precondition Failed");
return true;
},
};
//===========================================================================//
// httpd.js-based Storage server. //
//===========================================================================//
/**
* In general, the preferred way of using StorageServer is to directly
* introspect it. Callbacks are available for operations which are hard to
* verify through introspection, such as deletions.
*
* One of the goals of this server is to provide enough hooks for test code to
* find out what it needs without monkeypatching. Use this object as your
* prototype, and override as appropriate.
*/
this.StorageServerCallback = {
onCollectionDeleted: function onCollectionDeleted(user, collection) {},
onItemDeleted: function onItemDeleted(user, collection, bsoID) {},
/**
* Called at the top of every request.
*
* Allows the test to inspect the request. Hooks should be careful not to
* modify or change state of the request or they may impact future processing.
*/
onRequest: function onRequest(request) {},
};
/**
* Construct a new test Storage server. Takes a callback object (e.g.,
* StorageServerCallback) as input.
*/
this.StorageServer = function StorageServer(callback) {
this.callback = callback || {__proto__: StorageServerCallback};
this.server = new HttpServer();
this.started = false;
this.users = {};
this.requestCount = 0;
this._log = Log.repository.getLogger(STORAGE_HTTP_LOGGER);
// Install our own default handler. This allows us to mess around with the
// whole URL space.
let handler = this.server._handler;
handler._handleDefault = this.handleDefault.bind(this, handler);
}
StorageServer.prototype = {
DEFAULT_QUOTA: 1024 * 1024, // # bytes.
server: null, // HttpServer.
users: null, // Map of username => {collections, password}.
/**
* If true, the server will allow any arbitrary user to be used.
*
* No authentication will be performed. Whatever user is detected from the
* URL or auth headers will be created (if needed) and used.
*/
allowAllUsers: false,
/**
* Start the StorageServer's underlying HTTP server.
*
* @param port
* The numeric port on which to start. A falsy value implies to
* select any available port.
* @param cb
* A callback function (of no arguments) which is invoked after
* startup.
*/
start: function start(port, cb) {
if (this.started) {
this._log.warn("Warning: server already started on " + this.port);
return;
}
if (!port) {
port = -1;
}
this.port = port;
try {
this.server.start(this.port);
this.port = this.server.identity.primaryPort;
this.started = true;
if (cb) {
cb();
}
} catch (ex) {
_("==========================================");
_("Got exception starting Storage HTTP server on port " + this.port);
_("Error: " + CommonUtils.exceptionStr(ex));
_("Is there a process already listening on port " + this.port + "?");
_("==========================================");
do_throw(ex);
}
},
/**
* Start the server synchronously.
*
* @param port
* The numeric port on which to start. The default is to choose
* any available port.
*/
startSynchronous: function startSynchronous(port=-1) {
let cb = Async.makeSpinningCallback();
this.start(port, cb);
cb.wait();
},
/**
* Stop the StorageServer's HTTP server.
*
* @param cb
* A callback function. Invoked after the server has been stopped.
*
*/
stop: function stop(cb) {
if (!this.started) {
this._log.warn("StorageServer: Warning: server not running. Can't stop " +
"me now!");
return;
}
this.server.stop(cb);
this.started = false;
},
serverTime: function serverTime() {
return new_timestamp();
},
/**
* Create a new user, complete with an empty set of collections.
*
* @param username
* The username to use. An Error will be thrown if a user by that name
* already exists.
* @param password
* A password string.
*
* @return a user object, as would be returned by server.user(username).
*/
registerUser: function registerUser(username, password) {
if (username in this.users) {
throw new Error("User already exists.");
}
if (!isFinite(parseInt(username))) {
throw new Error("Usernames must be numeric: " + username);
}
this._log.info("Registering new user with server: " + username);
this.users[username] = {
password: password,
collections: {},
quota: this.DEFAULT_QUOTA,
};
return this.user(username);
},
userExists: function userExists(username) {
return username in this.users;
},
getCollection: function getCollection(username, collection) {
return this.users[username].collections[collection];
},
_insertCollection: function _insertCollection(collections, collection, bsos) {
let coll = new StorageServerCollection(bsos, true);
coll.collectionHandler = coll.handler();
collections[collection] = coll;
return coll;
},
createCollection: function createCollection(username, collection, bsos) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
let collections = this.users[username].collections;
if (collection in collections) {
throw new Error("Collection already exists.");
}
return this._insertCollection(collections, collection, bsos);
},
deleteCollection: function deleteCollection(username, collection) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
delete this.users[username].collections[collection];
},
/**
* Accept a map like the following:
* {
* meta: {global: {version: 1, ...}},
* crypto: {"keys": {}, foo: {bar: 2}},
* bookmarks: {}
* }
* to cause collections and BSOs to be created.
* If a collection already exists, no error is raised.
* If a BSO already exists, it will be updated to the new contents.
*/
createContents: function createContents(username, collections) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
let userCollections = this.users[username].collections;
for (let [id, contents] in Iterator(collections)) {
let coll = userCollections[id] ||
this._insertCollection(userCollections, id);
for (let [bsoID, payload] in Iterator(contents)) {
coll.insert(bsoID, payload);
}
}
},
/**
* Insert a BSO in an existing collection.
*/
insertBSO: function insertBSO(username, collection, bso) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
let userCollections = this.users[username].collections;
if (!(collection in userCollections)) {
throw new Error("Unknown collection.");
}
userCollections[collection].insertBSO(bso);
return bso;
},
/**
* Delete all of the collections for the named user.
*
* @param username
* The name of the affected user.
*/
deleteCollections: function deleteCollections(username) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
let userCollections = this.users[username].collections;
for each (let [name, coll] in Iterator(userCollections)) {
this._log.trace("Bulk deleting " + name + " for " + username + "...");
coll.delete({});
}
this.users[username].collections = {};
},
getQuota: function getQuota(username) {
if (!(username in this.users)) {
throw new Error("Unknown user.");
}
return this.users[username].quota;
},
/**
* Obtain the newest timestamp of all collections for a user.
*/
newestCollectionTimestamp: function newestCollectionTimestamp(username) {
let collections = this.users[username].collections;
let newest = 0;
for each (let collection in collections) {
if (collection.timestamp > newest) {
newest = collection.timestamp;
}
}
return newest;
},
/**
* Compute the object that is returned for an info/collections request.
*/
infoCollections: function infoCollections(username) {
let responseObject = {};
let colls = this.users[username].collections;
for (let coll in colls) {
responseObject[coll] = colls[coll].timestamp;
}
this._log.trace("StorageServer: info/collections returning " +
JSON.stringify(responseObject));
return responseObject;
},
infoCounts: function infoCounts(username) {
let data = {};
let collections = this.users[username].collections;
for (let [k, v] in Iterator(collections)) {
let count = v.count();
if (!count) {
continue;
}
data[k] = count;
}
return data;
},
infoUsage: function infoUsage(username) {
let data = {};
let collections = this.users[username].collections;
for (let [k, v] in Iterator(collections)) {
data[k] = v.totalPayloadSize;
}
return data;
},
infoQuota: function infoQuota(username) {
let total = 0;
for each (let value in this.infoUsage(username)) {
total += value;
}
return {
quota: this.getQuota(username),
usage: total
};
},
/**
* Simple accessor to allow collective binding and abbreviation of a bunch of
* methods. Yay!
* Use like this:
*
* let u = server.user("john");
* u.collection("bookmarks").bso("abcdefg").payload; // Etc.
*
* @return a proxy for the user data stored in this server.
*/
user: function user(username) {
let collection = this.getCollection.bind(this, username);
let createCollection = this.createCollection.bind(this, username);
let createContents = this.createContents.bind(this, username);
let modified = function (collectionName) {
return collection(collectionName).timestamp;
}
let deleteCollections = this.deleteCollections.bind(this, username);
let quota = this.getQuota.bind(this, username);
return {
collection: collection,
createCollection: createCollection,
createContents: createContents,
deleteCollections: deleteCollections,
modified: modified,
quota: quota,
};
},
_pruneExpired: function _pruneExpired() {
let now = Date.now();
for each (let user in this.users) {
for each (let collection in user.collections) {
for each (let bso in collection.bsos()) {
// ttl === 0 is a special case, so we can't simply !ttl.
if (typeof(bso.ttl) != "number") {
continue;
}
let ttlDate = bso.modified + (bso.ttl * 1000);
if (ttlDate < now) {
this._log.info("Deleting BSO because TTL expired: " + bso.id);
bso.delete();
}
}
}
}
},
/*
* Regular expressions for splitting up Storage request paths.
* Storage URLs are of the form:
* /$apipath/$version/$userid/$further
* where $further is usually:
* storage/$collection/$bso
* or
* storage/$collection
* or
* info/$op
*
* We assume for the sake of simplicity that $apipath is empty.
*
* N.B., we don't follow any kind of username spec here, because as far as I
* can tell there isn't one. See Bug 689671. Instead we follow the Python
* server code.
*
* Path: [all, version, first, rest]
* Storage: [all, collection?, id?]
*/
pathRE: /^\/([0-9]+(?:\.[0-9]+)?)(?:\/([0-9]+)\/([^\/]+)(?:\/(.+))?)?$/,
storageRE: /^([-_a-zA-Z0-9]+)(?:\/([-_a-zA-Z0-9]+)\/?)?$/,
defaultHeaders: {},
/**
* HTTP response utility.
*/
respond: function respond(req, resp, code, status, body, headers, timestamp) {
this._log.info("Response: " + code + " " + status);
resp.setStatusLine(req.httpVersion, code, status);
for each (let [header, value] in Iterator(headers || this.defaultHeaders)) {
resp.setHeader(header, value, false);
}
if (timestamp) {
resp.setHeader("X-Timestamp", "" + timestamp, false);
}
if (body) {
resp.bodyOutputStream.write(body, body.length);
}
},
/**
* This is invoked by the HttpServer. `this` is bound to the StorageServer;
* `handler` is the HttpServer's handler.
*
* TODO: need to use the correct Storage API response codes and errors here.
*/
handleDefault: function handleDefault(handler, req, resp) {
this.requestCount++;
let timestamp = new_timestamp();
try {
this._handleDefault(handler, req, resp, timestamp);
} catch (e) {
if (e instanceof HttpError) {
this.respond(req, resp, e.code, e.description, "", {}, timestamp);
} else {
this._log.warn(CommonUtils.exceptionStr(e));
throw e;
}
}
},
_handleDefault: function _handleDefault(handler, req, resp, timestamp) {
let path = req.path;
if (req.queryString.length) {
path += "?" + req.queryString;
}
this._log.debug("StorageServer: Handling request: " + req.method + " " +
path);
if (this.callback.onRequest) {
this.callback.onRequest(req);
}
// Prune expired records for all users at top of request. This is the
// easiest way to process TTLs since all requests go through here.
this._pruneExpired();
req.timestamp = timestamp;
resp.setHeader("X-Timestamp", "" + timestamp, false);
let parts = this.pathRE.exec(req.path);
if (!parts) {
this._log.debug("StorageServer: Unexpected request: bad URL " + req.path);
throw HTTP_404;
}
let [all, version, userPath, first, rest] = parts;
if (version != STORAGE_API_VERSION) {
this._log.debug("StorageServer: Unknown version.");
throw HTTP_404;
}
let username;
// By default, the server requires users to be authenticated. When a
// request arrives, the user must have been previously configured and
// the request must have authentication. In "allow all users" mode, we
// take the username from the URL, create the user on the fly, and don't
// perform any authentication.
if (!this.allowAllUsers) {
// Enforce authentication.
if (!req.hasHeader("authorization")) {
this.respond(req, resp, 401, "Authorization Required", "{}", {
"WWW-Authenticate": 'Basic realm="secret"'
});
return;
}
let ensureUserExists = function ensureUserExists(username) {
if (this.userExists(username)) {
return;
}
this._log.info("StorageServer: Unknown user: " + username);
throw HTTP_401;
}.bind(this);
let auth = req.getHeader("authorization");
this._log.debug("Authorization: " + auth);
if (auth.indexOf("Basic ") == 0) {
let decoded = CommonUtils.safeAtoB(auth.substr(6));
this._log.debug("Decoded Basic Auth: " + decoded);
let [user, password] = decoded.split(":", 2);
if (!password) {
this._log.debug("Malformed HTTP Basic Authorization header: " + auth);
throw HTTP_400;
}
this._log.debug("Got HTTP Basic auth for user: " + user);
ensureUserExists(user);
username = user;
if (this.users[user].password != password) {
this._log.debug("StorageServer: Provided password is not correct.");
throw HTTP_401;
}
// TODO support token auth.
} else {
this._log.debug("Unsupported HTTP authorization type: " + auth);
throw HTTP_500;
}
// All users mode.
} else {
// Auto create user with dummy password.
if (!this.userExists(userPath)) {
this.registerUser(userPath, "DUMMY-PASSWORD-*&%#");
}
username = userPath;
}
// Hand off to the appropriate handler for this path component.
if (first in this.toplevelHandlers) {
let handler = this.toplevelHandlers[first];
try {
return handler.call(this, handler, req, resp, version, username, rest);
} catch (ex) {
this._log.warn("Got exception during request: " +
CommonUtils.exceptionStr(ex));
throw ex;
}
}
this._log.debug("StorageServer: Unknown top-level " + first);
throw HTTP_404;
},
/**
* Collection of the handler methods we use for top-level path components.
*/
toplevelHandlers: {
"storage": function handleStorage(handler, req, resp, version, username,
rest) {
let respond = this.respond.bind(this, req, resp);
if (!rest || !rest.length) {
this._log.debug("StorageServer: top-level storage " +
req.method + " request.");
if (req.method != "DELETE") {
respond(405, "Method Not Allowed", null, {"Allow": "DELETE"});
return;
}
this.user(username).deleteCollections();
respond(204, "No Content");
return;
}
let match = this.storageRE.exec(rest);
if (!match) {
this._log.warn("StorageServer: Unknown storage operation " + rest);
throw HTTP_404;
}
let [all, collection, bsoID] = match;
let coll = this.getCollection(username, collection);
let collectionExisted = !!coll;
switch (req.method) {
case "GET":
// Tried to GET on a collection that doesn't exist.
if (!coll) {
respond(404, "Not Found");
return;
}
// No BSO URL parameter goes to collection handler.
if (!bsoID) {
return coll.collectionHandler(req, resp);
}
// Handle non-existent BSO.
let bso = coll.bso(bsoID);
if (!bso) {
respond(404, "Not Found");
return;
}
// Proxy to BSO handler.
return bso.getHandler(req, resp);
case "DELETE":
// Collection doesn't exist.
if (!coll) {
respond(404, "Not Found");
return;
}
// Deleting a specific BSO.
if (bsoID) {
let bso = coll.bso(bsoID);
// BSO does not exist on the server. Nothing to do.
if (!bso) {
respond(404, "Not Found");
return;
}
if (req.hasHeader("x-if-unmodified-since")) {
let modified = parseInt(req.getHeader("x-if-unmodified-since"));
CommonUtils.ensureMillisecondsTimestamp(modified);
if (bso.modified > modified) {
respond(412, "Precondition Failed");
return;
}
}
bso.delete();
coll.timestamp = req.timestamp;
this.callback.onItemDeleted(username, collection, bsoID);
respond(204, "No Content");
return;
}
// Proxy to collection handler.
coll.collectionHandler(req, resp);
// Spot if this is a DELETE for some IDs, and don't blow away the
// whole collection!
//
// We already handled deleting the BSOs by invoking the deleted
// collection's handler. However, in the case of
//
// DELETE storage/foobar
//
// we also need to remove foobar from the collections map. This
// clause tries to differentiate the above request from
//
// DELETE storage/foobar?ids=foo,baz
//
// and do the right thing.
// TODO: less hacky method.
if (-1 == req.queryString.indexOf("ids=")) {
// When you delete the entire collection, we drop it.
this._log.debug("Deleting entire collection.");
delete this.users[username].collections[collection];
this.callback.onCollectionDeleted(username, collection);
}
// Notify of item deletion.
let deleted = resp.deleted || [];
for (let i = 0; i < deleted.length; ++i) {
this.callback.onItemDeleted(username, collection, deleted[i]);
}
return;
case "POST":
case "PUT":
// Auto-create collection if it doesn't exist.
if (!coll) {
coll = this.createCollection(username, collection);
}
try {
if (bsoID) {
let bso = coll.bso(bsoID);
if (!bso) {
this._log.trace("StorageServer: creating BSO " + collection +
"/" + bsoID);
try {
bso = coll.insert(bsoID);
} catch (ex) {
return sendMozSvcError(req, resp, "8");
}
}
bso.putHandler(req, resp);
coll.timestamp = req.timestamp;
return resp;
}
return coll.collectionHandler(req, resp);
} catch (ex) {
if (ex instanceof HttpError) {
if (!collectionExisted) {
this.deleteCollection(username, collection);
}
}
throw ex;
}
default:
throw new Error("Request method " + req.method + " not implemented.");
}
},
"info": function handleInfo(handler, req, resp, version, username, rest) {
switch (rest) {
case "collections":
return this.handleInfoCollections(req, resp, username);
case "collection_counts":
return this.handleInfoCounts(req, resp, username);
case "collection_usage":
return this.handleInfoUsage(req, resp, username);
case "quota":
return this.handleInfoQuota(req, resp, username);
default:
this._log.warn("StorageServer: Unknown info operation " + rest);
throw HTTP_404;
}
}
},
handleInfoConditional: function handleInfoConditional(request, response,
user) {
if (!request.hasHeader("x-if-modified-since")) {
return false;
}
let requestModified = request.getHeader("x-if-modified-since");
requestModified = parseInt(requestModified, 10);
let serverModified = this.newestCollectionTimestamp(user);
this._log.info("Server mtime: " + serverModified + "; Client modified: " +
requestModified);
if (serverModified > requestModified) {
return false;
}
this.respond(request, response, 304, "Not Modified", null, {
"X-Last-Modified": "" + serverModified
});
return true;
},
handleInfoCollections: function handleInfoCollections(request, response,
user) {
if (this.handleInfoConditional(request, response, user)) {
return;
}
let info = this.infoCollections(user);
let body = JSON.stringify(info);
this.respond(request, response, 200, "OK", body, {
"Content-Type": "application/json",
"X-Last-Modified": "" + this.newestCollectionTimestamp(user),
});
},
handleInfoCounts: function handleInfoCounts(request, response, user) {
if (this.handleInfoConditional(request, response, user)) {
return;
}
let counts = this.infoCounts(user);
let body = JSON.stringify(counts);
this.respond(request, response, 200, "OK", body, {
"Content-Type": "application/json",
"X-Last-Modified": "" + this.newestCollectionTimestamp(user),
});
},
handleInfoUsage: function handleInfoUsage(request, response, user) {
if (this.handleInfoConditional(request, response, user)) {
return;
}
let body = JSON.stringify(this.infoUsage(user));
this.respond(request, response, 200, "OK", body, {
"Content-Type": "application/json",
"X-Last-Modified": "" + this.newestCollectionTimestamp(user),
});
},
handleInfoQuota: function handleInfoQuota(request, response, user) {
if (this.handleInfoConditional(request, response, user)) {
return;
}
let body = JSON.stringify(this.infoQuota(user));
this.respond(request, response, 200, "OK", body, {
"Content-Type": "application/json",
"X-Last-Modified": "" + this.newestCollectionTimestamp(user),
});
},
};
/**
* Helper to create a storage server for a set of users.
*
* Each user is specified by a map of username to password.
*/
this.storageServerForUsers =
function storageServerForUsers(users, contents, callback) {
let server = new StorageServer(callback);
for (let [user, pass] in Iterator(users)) {
server.registerUser(user, pass);
server.createContents(user, contents);
}
server.start();
return server;
}
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