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update some variable names to better reflect usage

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This commit is contained in:
ansuz 2019-07-22 15:42:29 +02:00
parent 9a178f35ae
commit 54c2a61cd0
1 changed files with 19 additions and 21 deletions
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40
historyKeeper.js
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@ -58,7 +58,7 @@ module.exports.create = function (cfg) {
Log.silly('HK_LOADING', 'LOADING HISTORY_KEEPER MODULE');
const historyKeeperKeys = {};
const metadata_cache = {};
const HISTORY_KEEPER_ID = Crypto.randomBytes(8).toString('hex');
Log.verbose('HK_ID', 'History keeper ID: ' + HISTORY_KEEPER_ID);
@ -93,7 +93,6 @@ module.exports.create = function (cfg) {
const computeIndex = function (channelName, cb) {
const cpIndex = [];
let messageBuf = [];
let validateKey;
let metadata; // FIXME METADATA READ
let i = 0;
@ -107,12 +106,11 @@ module.exports.create = function (cfg) {
store.readMessagesBin(channelName, 0, (msgObj, rmcb) => {
let msg;
i++;
if (!validateKey && msgObj.buff.indexOf('validateKey') > -1) {
if (!metadata && msgObj.buff.indexOf('validateKey') > -1) {
metadata = msg = tryParse(msgObj.buff.toString('utf8')); // FIXME METADATA READ
if (typeof msg === "undefined") { return rmcb(); }
if (msg.validateKey) {
// XXX this variable name is very misleading as it's actually the metadata, not the validateKey
validateKey = historyKeeperKeys[channelName] = msg;
metadata_cache[channelName] = msg;
return rmcb();
}
}
@ -278,8 +276,8 @@ module.exports.create = function (cfg) {
const isCp = /^cp\|/.test(msgStruct[4]);
// FIXME METADATA
if (historyKeeperKeys[channel.id] && historyKeeperKeys[channel.id].expire &&
historyKeeperKeys[channel.id].expire < +new Date()) {
if (metadata_cache[channel.id] && metadata_cache[channel.id].expire &&
metadata_cache[channel.id].expire < +new Date()) {
return; // Don't store messages on expired channel
}
let id;
@ -291,12 +289,12 @@ module.exports.create = function (cfg) {
return;
}
}
if (historyKeeperKeys[channel.id] && historyKeeperKeys[channel.id].validateKey) {
if (metadata_cache[channel.id] && metadata_cache[channel.id].validateKey) {
/*::if (typeof(msgStruct[4]) !== 'string') { throw new Error(); }*/
let signedMsg = (isCp) ? msgStruct[4].replace(CHECKPOINT_PATTERN, '') : msgStruct[4];
signedMsg = Nacl.util.decodeBase64(signedMsg);
// FIXME performance: cache the decoded key instead of decoding it every time
const validateKey = Nacl.util.decodeBase64(historyKeeperKeys[channel.id].validateKey);
const validateKey = Nacl.util.decodeBase64(metadata_cache[channel.id].validateKey);
const validated = Nacl.sign.open(signedMsg, validateKey);
if (!validated) {
Log.info("HK_SIGNED_MESSAGE_REJECTED", 'Channel '+channel.id);
@ -324,7 +322,7 @@ module.exports.create = function (cfg) {
* the netflux server manages other memory in ctx.channels
*/
const dropChannel = function (chanName) {
delete historyKeeperKeys[chanName];
delete metadata_cache[chanName];
};
/* getHistoryOffset
@ -458,7 +456,7 @@ module.exports.create = function (cfg) {
if (typeof parsed === "undefined") { return; }
if (parsed.validateKey) {
historyKeeperKeys[channelName] = parsed;
metadata_cache[channelName] = parsed;
return;
}
@ -517,7 +515,7 @@ module.exports.create = function (cfg) {
});
});
delete ctx.channels[channel];
delete historyKeeperKeys[channel];
delete metadata_cache[channel];
};
// Check if the selected channel is expired
// If it is, remove it from memory and broadcast a message to its members
@ -534,8 +532,8 @@ module.exports.create = function (cfg) {
FIXME the boolean nature of this API should be separated from its side effects
*/
const checkExpired = function (ctx, channel) {
if (channel && channel.length === STANDARD_CHANNEL_LENGTH && historyKeeperKeys[channel] &&
historyKeeperKeys[channel].expire && historyKeeperKeys[channel].expire < +new Date()) {
if (channel && channel.length === STANDARD_CHANNEL_LENGTH && metadata_cache[channel] &&
metadata_cache[channel].expire && metadata_cache[channel].expire < +new Date()) {
store.closeChannel(channel, function () {
historyKeeperBroadcast(ctx, channel, {
error: 'EEXPIRED',
@ -543,7 +541,7 @@ module.exports.create = function (cfg) {
});
});
delete ctx.channels[channel];
delete historyKeeperKeys[channel];
delete metadata_cache[channel];
return true;
}
return;
@ -577,7 +575,7 @@ module.exports.create = function (cfg) {
}
// If the requested history is for an expired channel, abort
// Note the if we don't have the keys for that channel in historyKeeperKeys, we'll
// Note the if we don't have the keys for that channel in metadata_cache, we'll
// have to abort later (once we know the expiration time)
if (checkExpired(ctx, parsed[1])) { return; }
@ -631,8 +629,8 @@ module.exports.create = function (cfg) {
if (err) { return w(); }
if (!index || !index.metadata) { return void w(); } // FIXME METADATA READ
// Store the metadata if we don't have it in memory
if (!historyKeeperKeys[channelName]) {
historyKeeperKeys[channelName] = index.metadata; // FIXME METADATA STORE
if (!metadata_cache[channelName]) {
metadata_cache[channelName] = index.metadata; // FIXME METADATA STORE
}
// And then check if the channel is expired. If it is, send the error and abort
if (checkExpired(ctx, channelName)) { return void waitFor.abort(); }
@ -651,7 +649,7 @@ module.exports.create = function (cfg) {
if (msg.validateKey) {
// If it is a young channel, this is the part where we get the metadata
// Check if the channel is expired and abort if it is.
if (!historyKeeperKeys[channelName]) { historyKeeperKeys[channelName] = msg; }
if (!metadata_cache[channelName]) { metadata_cache[channelName] = msg; }
expired = checkExpired(ctx, channelName);
}
if (expired) { return void cb(); }
@ -675,7 +673,7 @@ module.exports.create = function (cfg) {
const chan = ctx.channels[channelName];
// XXX check metadata message count too...
if (msgCount === 0 && !historyKeeperKeys[channelName] && chan && chan.indexOf(user) > -1) {
if (msgCount === 0 && !metadata_cache[channelName] && chan && chan.indexOf(user) > -1) {
var metadata = {};
metadata.channel = channelName;
if (validateKey) {
@ -687,7 +685,7 @@ module.exports.create = function (cfg) {
if (expire) {
metadata.expire = expire;
}
historyKeeperKeys[channelName] = metadata;
metadata_cache[channelName] = metadata;
storeMessage(ctx, chan, JSON.stringify(metadata), false, undefined); // FIXME METADATA WRITE
sendMsg(ctx, user, [0, HISTORY_KEEPER_ID, 'MSG', user.id, JSON.stringify(metadata)]); // FIXME METADATA SEND
}