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/******************************************************************************/
/* db.js -- Lowlevel and highlevel functions dealing with the database
*
* Copyright 2012-2016 AOL Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this Software except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*jshint
node: true, plusplus: false, curly: true, eqeqeq: true, immed: true, latedef: true, newcap: true, nonew: true, undef: true, strict: true, trailing: true
*/
'use strict';
var ESC = require('elasticsearch'),
async = require('async'),
os = require('os'),
fs = require('fs'),
util = require('util');
var internals = {tagId2Name: {},
tagName2Id: {},
fileId2File: {},
fileName2File: {},
molochNodeStatsCache: {},
healthCache: {},
usersCache: {},
qInProgress: 0,
apiVersion: "1.6",
q: []};
exports.initialize = function (info, cb) {
internals.dontMapTags = info.dontMapTags === 'true' || info.dontMapTags === true || false;
delete info.dontMapTags;
internals.info = info;
if (info.prefix && info.prefix.charAt(info.prefix.length-1) !== "_") {
internals.prefix = info.prefix + "_";
} else {
internals.prefix = info.prefix || "";
}
if (info.usersPrefix && info.usersPrefix.charAt(info.usersPrefix.length-1) !== "_") {
internals.usersPrefix = info.usersPrefix + "_";
} else {
internals.usersPrefix = info.usersPrefix || internals.prefix;
}
internals.nodeName = info.nodeName;
delete info.nodeName;
internals.elasticSearchClient = new ESC.Client({
host: internals.info.host,
apiVersion: internals.apiVersion,
requestTimeout: 300000,
keepAlive: true,
minSockets: 20,
maxSockets: 51
});
internals.elasticSearchClient.info(function(err,data) {
if (err) {
console.log(err, data);
}
if (data.version.number.match(/^(2.0|1|0)/)) {
console.log("ERROR - ES", data.version.number, "not supported, ES 2.1.x or later required.");
process.exit();
throw new Error("Exiting");
}
if (info.usersHost) {
internals.usersElasticSearchClient = new ESC.Client({
host: internals.info.usersHost,
apiVersion: internals.apiVersion,
requestTimeout: 300000,
keepAlive: true,
minSockets: 5,
maxSockets: 6
});
} else {
internals.usersElasticSearchClient = internals.elasticSearchClient;
}
return cb();
});
// Replace tag implementation
if (internals.dontMapTags) {
exports.tagIdToName = function (id, cb) { return cb(id); };
exports.tagNameToId = function (name, cb) { return cb(name); };
exports.isLocalView = function(node, yesCB, noCB) {return noCB(); };
internals.prefix = "MULTIPREFIX_";
}
};
//////////////////////////////////////////////////////////////////////////////////
//// Low level functions to convert from old style to new
//////////////////////////////////////////////////////////////////////////////////
//
//
function fixIndex(index) {
if (Array.isArray(index)) {
return index.map(function(val) {
if (val.lastIndexOf(internals.prefix, 0) === 0) {
return val;
} else {
return internals.prefix + val;
}
});
}
if (index.lastIndexOf(internals.prefix, 0) === 0) {
return index;
} else {
return internals.prefix + index;
}
}
exports.merge = function(to, from) {
for (var key in from) {
to[key] = from[key];
}
};
exports.get = function (index, type, id, cb) {
internals.elasticSearchClient.get({index: fixIndex(index), type: type, id: id}, cb);
};
exports.getWithOptions = function (index, type, id, options, cb) {
var params = {index: fixIndex(index), type:type, id: id};
exports.merge(params, options);
internals.elasticSearchClient.get(params, cb);
};
exports.index = function (index, type, id, document, cb) {
internals.elasticSearchClient.index({index: fixIndex(index), type: type, body: document, id: id}, cb);
};
exports.indexNow = function (index, type, id, document, cb) {
internals.elasticSearchClient.index({index: fixIndex(index), type: type, body: document, id: id, refresh: 1}, cb);
};
exports.search = function (index, type, query, options, cb) {
if (!cb) {
cb = options;
options = undefined;
}
var params = {index: fixIndex(index), type: type, body: query};
exports.merge(params, options);
internals.elasticSearchClient.search(params, cb);
};
exports.searchScroll = function (index, type, query, options, cb) {
if (!cb) {
cb = options;
options = {};
}
if ((query.size || 0) + (parseInt(query.from,10) || 0) >= 10000) {
var totalResults;
var params = {scroll: '1m'};
exports.merge(params, options);
exports.search(index, type, query, params,
function getMoreUntilDone(error, response) {
if (totalResults === undefined) {
totalResults = response;
} else {
Array.prototype.push.apply(totalResults.hits.hits, response.hits.hits);
}
if (!error && totalResults.hits.hits.length < Math.min(response.hits.total, query.size)) {
exports.scroll({
scrollId: response._scroll_id,
scroll: '1m'
}, getMoreUntilDone);
} else {
cb(error, totalResults);
}
});
} else {
return exports.search(index, type, query, options, cb);
}
};
exports.searchPrimary = function (index, type, query, options, cb) {
if (!cb) {
cb = options;
options = undefined;
}
var params = {preference: "_primary_first", ignore_unavailable: "true"};
exports.merge(params, options);
return exports.searchScroll(index, type, query, params, cb);
};
exports.msearch = function (index, type, queries, cb) {
var body = [];
for(var i = 0, ilen = queries.length; i < ilen; i++){
body.push({index: fixIndex(index), type: type});
body.push(queries[i]);
}
internals.elasticSearchClient.msearch({body: body}, cb);
};
exports.scroll = function (params, callback) {
internals.elasticSearchClient.scroll(params, callback);
};
exports.deleteByQuery = function (index, type, query, cb) {
internals.elasticSearchClient.deleteByQuery({index: fixIndex(index), type: type, body: query}, cb);
};
exports.deleteDocument = function (index, type, id, options, cb) {
if (!cb) {
cb = options;
options = undefined;
}
var params = {index: fixIndex(index), type: type, id: id};
exports.merge(params, options);
internals.elasticSearchClient.delete(params, cb);
};
exports.indexStats = function(index, cb) {
internals.elasticSearchClient.indices.stats({index: fixIndex(index)}, cb);
};
exports.getAliases = function(index, cb) {
internals.elasticSearchClient.indices.getAliases({index: fixIndex(index)}, cb);
};
exports.getAliasesCache = function (index, cb) {
if (internals.aliasesCache && internals.aliasesCacheTimeStamp > Date.now() - 5000) {
return cb(null, internals.aliasesCache);
}
exports.getAliases(index, function(err, aliases) {
if (err) {
return cb(err, aliases);
}
internals.aliasesCacheTimeStamp = Date.now();
internals.aliasesCache = aliases;
cb(null, aliases);
});
};
exports.health = function(cb) {
internals.elasticSearchClient.info(function(err,data) {
internals.elasticSearchClient.cluster.health({}, function(err, result) {
if (data && result) {
result.version = data.version.number;
}
return cb(err, result);
});
});
};
exports.nodesStats = function (options, cb) {
return internals.elasticSearchClient.nodes.stats(options, function (err, data, status) {cb(err,data);});
};
exports.update = function (index, type, id, document, options, cb) {
if (!cb) {
cb = options;
options = undefined;
}
var params = {index: fixIndex(index), type: type, body: document, id: id};
exports.merge(params, options);
internals.elasticSearchClient.update(params, cb);
};
exports.close = function () {
internals.elasticSearchClient.close();
};
//////////////////////////////////////////////////////////////////////////////////
//// High level functions
//////////////////////////////////////////////////////////////////////////////////
exports.flushCache = function () {
internals.tagId2Name = {};
internals.tagName2Id = {};
internals.fileId2File = {};
internals.fileName2File = {};
internals.molochNodeStatsCache = {};
internals.healthCache = {};
internals.usersCache = {};
delete internals.aliasesCache;
};
exports.searchUsers = function(query, cb) {
return internals.usersElasticSearchClient.search({index: internals.usersPrefix + 'users', type: 'user', body: query}, cb);
};
exports.getUser = function (name, cb) {
internals.usersElasticSearchClient.get({index: internals.usersPrefix + 'users', type: 'user', id: name}, cb);
};
exports.getUserCache = function (name, cb) {
if (internals.usersCache[name] && internals.usersCache[name]._timeStamp > Date.now() - 5000) {
return cb(null, internals.usersCache[name]);
}
exports.getUser(name, function(err, suser) {
if (err) {
return cb(err, suser);
}
suser._timeStamp = Date.now();
internals.usersCache[name] = suser;
cb(null, suser);
});
};
exports.numberOfUsers = function(cb) {
internals.usersElasticSearchClient.count({index: internals.usersPrefix + 'users', ignoreUnavailable:true}, function(err, result) {
if (err || result.error) {
return cb(null, 0);
}
return cb(null, result.count);
});
};
exports.deleteUser = function (name, cb) {
delete internals.usersCache[name];
return internals.usersElasticSearchClient.delete({index: internals.usersPrefix + 'users', type: 'user', id: name, refresh: 1}, cb);
};
exports.setUser = function(name, doc, cb) {
delete internals.usersCache[name];
return internals.usersElasticSearchClient.index({index: internals.usersPrefix + 'users', type: 'user', body: doc, id: name, refresh: 1}, cb);
};
exports.molochNodeStats = function (name, cb) {
exports.get('stats', 'stat', name, function(err, stat) {
if (err || !stat.found) {
// Even if an error, if we have a cached value use it
if (err && internals.molochNodeStatsCache[name]) {
return cb(null, internals.molochNodeStatsCache[name]);
}
cb(err || "Unknown node " + name, internals.molochNodeStatsCache[name]);
} else {
internals.molochNodeStatsCache[name] = stat._source;
internals.molochNodeStatsCache[name]._timeStamp = Date.now();
cb(null, stat._source);
}
});
};
exports.molochNodeStatsCache = function (name, cb) {
if (internals.molochNodeStatsCache[name] && internals.molochNodeStatsCache[name]._timeStamp > Date.now() - 30000) {
return cb(null, internals.molochNodeStatsCache[name]);
}
return exports.molochNodeStats(name, cb);
};
exports.healthCache = function (cb) {
if (!cb) {
return internals.healthCache;
}
if (internals.healthCache._timeStamp !== undefined && internals.healthCache._timeStamp > Date.now() - 10000) {
return cb(null, internals.healthCache);
}
return exports.health(function(err, health) {
if (err) {
// Even if an error, if we have a cache use it
if (internals.healthCache._timeStamp !== undefined) {
return cb(null, internals.healthCache);
}
return cb(err, null);
}
internals.healthCache = health;
internals.healthCache._timeStamp = Date.now();
cb(null, health);
});
};
exports.hostnameToNodeids = function (hostname, cb) {
var query = {query: {match: {hostname:hostname}}};
exports.search('stats', 'stat', query, function(err, sdata) {
var nodes = [];
if (sdata && sdata.hits && sdata.hits.hits) {
for (var i = 0, ilen = sdata.hits.hits.length; i < ilen; i++) {
nodes.push(sdata.hits.hits[i]._id);
}
}
cb(nodes);
});
};
function tagWorker(task, callback) {
if (task.type === "tagIdToName") {
10000
if (internals.tagId2Name[task.id]) {
return setImmediate(callback, null, internals.tagId2Name[task.id]);
}
var query = {query: {term: {n:task.id}}};
exports.search('tags', 'tag', query, function(err, tdata) {
if (!err && tdata.hits.hits[0]) {
internals.tagId2Name[task.id] = tdata.hits.hits[0]._id;
internals.tagName2Id[tdata.hits.hits[0]._id] = task.id;
return callback(null, internals.tagId2Name[task.id]);
}
console.log("LOOKUPERROR", query, err, tdata.hits);
return callback(null, "<lookuperror>");
});
} else {
if (internals.tagName2Id[task.name]) {
return setImmediate(callback, null, internals.tagName2Id[task.name]);
}
exports.get('tags', 'tag', task.name, function(err, tdata) {
if (!err && tdata.found) {
internals.tagName2Id[task.name] = tdata._source.n;
internals.tagId2Name[tdata._source.n] = task.name;
return callback(null, internals.tagName2Id[task.name]);
}
return callback(null, -1);
});
}
}
internals.tagQueue = async.queue(tagWorker, 5);
exports.tagIdToName = function (id, cb) {
internals.tagQueue.push({id: id, type: "tagIdToName"}, function (err, data) {
return cb(data);
});
};
exports.tagNameToId = function (name, cb) {
internals.tagQueue.push({name: name, type: "tagNameToId"}, function (err, data) {
return cb(data);
});
};
exports.fileIdToFile = function (node, num, cb) {
var key = node + "!" + num;
if (internals.fileId2File[key] !== undefined) {
return cb(internals.fileId2File[key]);
}
exports.get('files', 'file', node + '-' + num, function (err, fresult) {
if (!err && fresult.found) {
var file = fresult._source;
internals.fileId2File[key] = file;
internals.fileName2File[file.name] = file;
return cb(file);
}
// Cache file is unknown
internals.fileId2File[key] = null;
return cb(null);
});
};
exports.fileNameToFiles = function (name, cb) {
var query;
if (name[0] === "/" && name[name.length - 1] === "/") {
query = {query: {regexp: {name: name.substring(1, name.length-1)}}, sort: [{num: {order: "desc"}}]};
} else if (name.indexOf("*") !== -1) {
query = {query: {wildcard: {name: name}}, sort: [{num: {order: "desc"}}]};
}
// Not wildcard/regex check the cache
if (!query) {
if (internals.fileName2File[name]) {
return cb([internals.fileName2File[name]]);
}
query = {query: {term: {name: name}}, sort: [{num: {order: "desc"}}]};
}
exports.search('files', 'file', query, function(err, data) {
var files = [];
if (err || !data.hits) {
return cb(null);
}
data.hits.hits.forEach(function(hit) {
var file = hit._source;
var key = file.node + "!" + file.num;
internals.fileId2File[key] = file;
internals.fileName2File[file.name] = file;
files.push(file);
});
return cb(files);
});
};
exports.getSequenceNumber = function (name, cb) {
exports.index("sequence", "sequence", name, {}, function (err, sinfo) {
cb(err, sinfo._version);
});
};
exports.createTag = function (name, cb) {
// Only allow 1 create at a time, the lazy way
if (exports.createTag.inProgress === 1) {
setTimeout(exports.createTag, 50, name, cb);
return;
}
// Was already created while waiting
if (internals.tagName2Id[name]) {
return cb(internals.tagName2Id[name]);
}
// Do a create
exports.createTag.inProgress = 1;
exports.getSequenceNumber("tags", function (err, num) {
exports.index("tags", "tag", name, {n: num}, function (err, tinfo) {
exports.createTag.inProgress = 0;
internals.tagId2Name[num] = name;
internals.tagName2Id[name] = num;
cb(num);
});
});
};
exports.numberOfDocuments = function (index, cb) {
internals.elasticSearchClient.count({index: fixIndex(index), ignoreUnavailable:true}, function(err, result) {
if (err || result.error) {
return cb(null, 0);
}
return cb(null, result.count);
});
};
exports.updateFileSize = function (item, filesize) {
exports.update("files", "file", item.id, {doc: {filesize: filesize}});
};
exports.checkVersion = function(minVersion, checkUsers) {
var match = process.versions.node.match(/^(\d+)\.(\d+)\.(\d+)/);
var version = parseInt(match[1], 10)*10000 + parseInt(match[2], 10) * 100 + parseInt(match[3], 10);
if (version < 1020) {
console.log("ERROR - Need at least node 0.10.20, currently using", process.version);
process.exit(1);
throw new Error("Exiting");
}
var index;
["stats", "dstats", "tags", "sequence", "files"].forEach(function(index) {
exports.indexStats(index, function(err, status) {
if (err || status.error) {
console.log("ERROR - Issue with index '" + index + "' make sure 'db/db.pl <eshost:esport> init' has been run", err, status);
process.exit(1);
throw new Error("Exiting");
}
});
});
exports.get("dstats", "version", "version", function(err, doc) {
var version;
if (err) {
console.log("ERROR - Couldn't retrieve database version, is ES running? Have you run ./db.pl host:port init?", err);
process.exit(0);
throw new Error("Exiting");
}
if (!doc.found) {
version = 0;
} else {
version = doc._source.version;
}
if (version < minVersion) {
console.log("ERROR - Current database version (" + version + ") is less then required version (" + minVersion + ") use 'db/db.pl <eshost:esport> upgrade' to upgrade");
process.exit(1);
throw new Error("Exiting");
}
});
if (checkUsers) {
exports.numberOfUsers(function(err, num) {
if (num === 0) {
console.log("WARNING - No users are defined, use node viewer/addUser.js to add one, or turn off auth by unsetting passwordSecret");
}
});
}
};
exports.isLocalView = function(node, yesCB, noCB) {
if (node === internals.nodeName) {
return yesCB();
}
exports.molochNodeStatsCache(node, function(err, stat) {
if (err || stat.hostname !== os.hostname()) {
noCB();
} else {
yesCB();
}
});
};
exports.deleteFile = function(node, id, path, cb) {
fs.unlink(path, function() {
exports.deleteDocument('files', 'file', id, function(err, data) {
cb(null);
});
});
};
exports.id2Index = function (id) {
return 'sessions-' + id.substr(0,id.indexOf('-'));
};
exports.loadFields = function(cb) {
exports.search("fields", "field", {size:1000}, function (err, data) {
if (err) {
return cb([]);
}
cb(data.hits.hits);
});
};
function twoDigitString(value) {
return (value < 10) ? ("0" + value) : value.toString();
}
exports.getIndices = function(startTime, stopTime, rotateIndex, cb) {
var indices = [];
exports.getAliasesCache("sessions-*", function(err, aliases) {
if (err || aliases.error) {
return cb("");
}
var offset = 86400;
if (rotateIndex === "hourly") {
offset = 3600;
}
startTime = Math.floor(startTime/offset)*offset;
while (startTime < stopTime) {
var iname;
var d = new Date(startTime*1000);
switch (rotateIndex) {
case "monthly":
iname = internals.prefix + "sessions-" +
twoDigitString(d.getUTCFullYear()%100) + 'm' +
twoDigitString(d.getUTCMonth()+1);
break;
case "weekly":
var jan = new Date(d.getUTCFullYear(), 0, 0);
iname = internals.prefix + "sessions-" +
twoDigitString(d.getUTCFullYear()%100) + 'w' +
twoDigitString(Math.floor((d - jan) / 604800000));
break;
case "hourly":
iname = internals.prefix + "sessions-" +
twoDigitString(d.getUTCFullYear()%100) +
twoDigitString(d.getUTCMonth()+1) +
twoDigitString(d.getUTCDate()) + 'h' +
twoDigitString(d.getUTCHours());
break;
default:
iname = internals.prefix + "sessions-" +
twoDigitString(d.getUTCFullYear()%100) +
twoDigitString(d.getUTCMonth()+1) +
twoDigitString(d.getUTCDate());
break;
}
startTime += offset;
if (aliases[iname] && (indices.length === 0 || iname !== indices[indices.length-1])) {
indices.push(iname);
}
}
if (indices.length === 0) {
return cb("sessions-*");
}
return cb(indices.join());
});
};