You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
98 lines
3.3 KiB
JavaScript
98 lines
3.3 KiB
JavaScript
/* jshint esversion: 6 */
|
|
|
|
const nThen = require('nthen');
|
|
const Crypto = require('crypto');
|
|
const WriteQueue = require("./write-queue");
|
|
const BatchRead = require("./batch-read");
|
|
const RPC = require("./rpc");
|
|
const HK = require("./hk-util.js");
|
|
|
|
module.exports.create = function (config, cb) {
|
|
const Log = config.log;
|
|
|
|
Log.silly('HK_LOADING', 'LOADING HISTORY_KEEPER MODULE');
|
|
|
|
// TODO populate Env with everything that you use from config
|
|
// so that you can stop passing around your raw config
|
|
// and more easily share state between historyKeeper and rpc
|
|
const Env = {
|
|
Log: Log,
|
|
// tasks
|
|
// store
|
|
id: Crypto.randomBytes(8).toString('hex'),
|
|
|
|
metadata_cache: {},
|
|
channel_cache: {},
|
|
queueStorage: WriteQueue(),
|
|
batchIndexReads: BatchRead("HK_GET_INDEX"),
|
|
};
|
|
|
|
config.historyKeeper = {
|
|
metadata_cache: Env.metadata_cache,
|
|
channel_cache: Env.channel_cache,
|
|
|
|
id: Env.id,
|
|
|
|
channelMessage: function (Server, channel, msgStruct) {
|
|
// netflux-server emits 'channelMessage' events whenever someone broadcasts to a channel
|
|
// historyKeeper stores these messages if the channel id indicates that they are
|
|
// a channel type with permanent history
|
|
HK.onChannelMessage(Env, Server, channel, msgStruct);
|
|
},
|
|
channelClose: function (channelName) {
|
|
// netflux-server emits 'channelClose' events whenever everyone leaves a channel
|
|
// we drop cached metadata and indexes at the same time
|
|
HK.dropChannel(Env, channelName);
|
|
},
|
|
channelOpen: function (Server, channelName, userId) {
|
|
Env.channel_cache[channelName] = {};
|
|
Server.send(userId, [
|
|
0,
|
|
Env.id,
|
|
'JOIN',
|
|
channelName
|
|
]);
|
|
},
|
|
directMessage: function (Server, seq, userId, json) {
|
|
// netflux-server allows you to register an id with a handler
|
|
// this handler is invoked every time someone sends a message to that id
|
|
HK.onDirectMessage(Env, Server, seq, userId, json);
|
|
},
|
|
};
|
|
|
|
Log.verbose('HK_ID', 'History keeper ID: ' + Env.id);
|
|
|
|
nThen(function (w) {
|
|
require('./storage/file').create(config, w(function (_store) {
|
|
config.store = _store;
|
|
Env.store = _store;
|
|
}));
|
|
}).nThen(function (w) {
|
|
require("./storage/tasks").create(config, w(function (e, tasks) {
|
|
if (e) {
|
|
throw e;
|
|
}
|
|
Env.tasks = tasks;
|
|
config.tasks = tasks;
|
|
if (config.disableIntegratedTasks) { return; }
|
|
|
|
config.intervals = config.intervals || {};
|
|
config.intervals.taskExpiration = setInterval(function () {
|
|
tasks.runAll(function (err) {
|
|
if (err) {
|
|
// either TASK_CONCURRENCY or an error with tasks.list
|
|
// in either case it is already logged.
|
|
}
|
|
});
|
|
}, 1000 * 60 * 5); // run every five minutes
|
|
}));
|
|
}).nThen(function () {
|
|
RPC.create(config, function (err, _rpc) {
|
|
if (err) { throw err; }
|
|
|
|
Env.rpc = _rpc;
|
|
cb(void 0, config.historyKeeper);
|
|
});
|
|
});
|
|
};
|