ffffng/server/services/monitoringService.js
2016-05-24 19:14:09 +02:00

312 lines
12 KiB
JavaScript

'use strict';
angular.module('ffffng')
.service('MonitoringService', function (
_,
async,
config,
Database,
ErrorTypes,
Logger,
moment,
NodeService,
request,
Strings,
Validator,
Constraints
) {
var previousImportTimestamp = null;
function insertNodeInformation(nodeData, node, callback) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('Node is new in monitoring, creating data:', nodeData.mac);
return Database.run(
'INSERT INTO node_state ' +
'(mac, state, last_seen, import_timestamp, last_status_mail_send) ' +
'VALUES (?, ?, ?, ?, ?)',
[
node.mac,
nodeData.state,
nodeData.lastSeen.unix(),
nodeData.importTimestamp.unix(),
null // new node so we haven't send a mail yet
],
callback
);
}
function updateNodeInformation(nodeData, node, row, callback) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('Node is known in monitoring:', nodeData.mac);
if (!moment(row.import_timestamp).isBefore(nodeData.importTimestamp)) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('No new data for node, skipping:', nodeData.mac);
return callback();
}
Logger
.tag('monitoring', 'information-retrieval')
.debug('New data for node, updating:', nodeData.mac);
return Database.run(
'UPDATE node_state ' +
'WHERE id = ? AND mac = ?' +
'SET state = ?, last_seen = ?, import_timestamp = ?, modified_at = ?',
[
row.id, node.mac,
nodeData.state, nodeData.lastSeen.unix(), nodeData.importTimestamp.unix(), moment.unix()
],
callback
);
}
function deleteNodeInformation(nodeData, node, callback) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('Node is not being monitored, deleting monitoring data:', nodeData.mac);
return Database.run(
'DELETE FROM node_state WHERE mac = ? AND import_timestamp < ?',
[node.mac, nodeData.importTimestamp.unix()],
callback
);
}
function storeNodeInformation(nodeData, node, callback) {
if (node.monitoring && node.monitoringConfirmed) {
Logger.tag('monitoring', 'information-retrieval').debug('Node is being monitored:', nodeData.mac);
return Database.get('SELECT * FROM node_state WHERE mac = ?', [node.mac], function (err, row) {
if (err) {
return callback(err);
}
if (_.isUndefined(row)) {
return insertNodeInformation(nodeData, node, callback);
} else {
return updateNodeInformation(nodeData, node, row, callback);
}
});
} else {
return deleteNodeInformation(node, callback);
}
}
var isValidMac = Validator.forConstraint(Constraints.node.mac);
function parseNodesJson(body, callback) {
Logger.tag('monitoring', 'information-retrieval').info('Parsing nodes.json...');
function parseTimestamp(timestamp) {
if (!_.isString(json.timestamp)) {
return moment.invalid();
}
return moment(timestamp);
}
var data = {};
try {
var json = JSON.parse(body);
if (json.version !== 1) {
return callback(new Error('Unexpected nodes.json version: ' + json.version));
}
data.importTimestamp = parseTimestamp(json.timestamp);
if (!data.importTimestamp.isValid()) {
return callback(new Error('Invalid timestamp: ' + json.timestamp));
}
if (!_.isPlainObject(json.nodes)) {
return callback(new Error('Invalid nodes object type: ' + (typeof json.nodes)));
}
data.nodes = _.values(_.map(json.nodes, function (nodeData, nodeId) {
if (!_.isPlainObject(nodeData)) {
throw new Error(
'Node ' + nodeId + ': Unexpected node type: ' + (typeof nodeData)
);
}
if (!_.isPlainObject(nodeData.nodeinfo)) {
throw new Error(
'Node ' + nodeId + ': Unexpected nodeinfo type: ' + (typeof nodeData.nodeinfo)
);
}
if (!_.isPlainObject(nodeData.nodeinfo.network)) {
throw new Error(
'Node ' + nodeId + ': Unexpected nodeinfo.network type: ' +
(typeof nodeData.nodeinfo.network)
);
}
if (!isValidMac(nodeData.nodeinfo.network.mac)) {
throw new Error(
'Node ' + nodeId + ': Invalid MAC: ' + nodeData.nodeinfo.network.mac
);
}
var mac = Strings.normalizeMac(nodeData.nodeinfo.network.mac);
if (!_.isPlainObject(nodeData.flags)) {
throw new Error(
'Node ' + nodeId + ': Unexpected flags type: ' + (typeof nodeData.flags)
);
}
if (!_.isBoolean(nodeData.flags.online)) {
throw new Error(
'Node ' + nodeId + ': Unexpected flags.online type: ' + (typeof nodeData.flags.online)
);
}
var isOnline = nodeData.flags.online;
var lastSeen = parseTimestamp(nodeData.lastseen);
if (!lastSeen.isValid()) {
throw new Error(
'Node ' + nodeId + ': Invalid lastseen timestamp: ' + nodeData.lastseen
);
}
return {
mac: mac,
importTimestamp: data.importTimestamp,
state: isOnline ? 'ONLINE' : 'OFFLINE',
lastSeen: lastSeen
};
}));
}
catch (error) {
return callback(error);
}
callback(null, data);
}
return {
confirm: function (token, callback) {
NodeService.getNodeDataByMonitoringToken(token, function (err, node, nodeSecrets) {
if (err) {
return callback(err);
}
if (!node.monitoring || !nodeSecrets.monitoringToken || nodeSecrets.monitoringToken !== token) {
return callback({data: 'Invalid token.', type: ErrorTypes.badRequest});
}
if (node.monitoringConfirmed) {
return callback(null, node);
}
node.monitoringConfirmed = true;
NodeService.internalUpdateNode(node.token, node, nodeSecrets, function (err, token, node) {
if (err) {
return callback(err);
}
callback(null, node);
});
});
},
disable: function (token, callback) {
NodeService.getNodeDataByMonitoringToken(token, function (err, node, nodeSecrets) {
if (err) {
return callback(err);
}
if (!node.monitoring || !nodeSecrets.monitoringToken || nodeSecrets.monitoringToken !== token) {
return callback({data: 'Invalid token.', type: ErrorTypes.badRequest});
}
node.monitoring = false;
node.monitoringConfirmed = false;
nodeSecrets.monitoringToken = '';
NodeService.internalUpdateNode(node.token, node, nodeSecrets, function (err, token, node) {
if (err) {
return callback(err);
}
callback(null, node);
});
});
},
retrieveNodeInformation: function (callback) {
var url = config.server.map.nodesJsonUrl;
Logger.tag('monitoring', 'information-retrieval').info('Retrieving nodes.json:', url);
request(url, function (err, response, body) {
if (err) {
return callback(err);
}
if (response.statusCode !== 200) {
return callback(new Error(
'Could not download nodes.json from ' + url + ': ' +
response.statusCode + ' - ' + response.statusMessage
));
}
parseNodesJson(body, function (err, data) {
if (err) {
return callback(err);
}
if (previousImportTimestamp !== null && !data.importTimestamp.isAfter(previousImportTimestamp)) {
Logger
.tag('monitoring', 'information-retrieval')
.info(
'No new data, skipping.',
'Current timestamp:',
data.importTimestamp.format(),
'Previous timestamp:',
previousImportTimestamp.format()
);
return callback();
}
previousImportTimestamp = data.importTimestamp;
async.each(
data.nodes,
function (nodeData, nodeCallback) {
Logger.tag('monitoring', 'information-retrieval').debug('Importing:', nodeData.mac);
NodeService.findNodeDataByMac(nodeData.mac, function (err, node) {
if (err) {
Logger
.tag('monitoring', 'information-retrieval')
.error('Error importing:', nodeData.mac, err);
return nodeCallback(err);
}
if (!node) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('Unknown node, skipping:', nodeData.mac);
return nodeCallback(null);
}
storeNodeInformation(nodeData, node, function (err) {
if (err) {
Logger
.tag('monitoring', 'information-retrieval')
.debug('Could not update / deleting node data:', nodeData.mac, err);
return nodeCallback(err);
}
Logger
.tag('monitoring', 'information-retrieval')
.debug('Updating / deleting node data done:', nodeData.mac);
nodeCallback();
});
});
},
callback
);
});
});
}
};
});