couch.changes = function (db, query, callback) {
var feed = couchr.changes(couchURL(db), query);
feed.on('change', function (change) {
callback(null, change);
});
feed.on('error', callback);
};
exports.start = function (manager, callback) {
var am = {};
var ev = new events.EventEmitter();
am.emit = function () {
ev.emit.apply(ev, arguments);
};
am.on = function () {
ev.on.apply(ev, arguments);
};
var user_db = manager._resolve('_users');
var feed = couchr.changes(user_db, {include_docs: true});
feed.on('change', function (change) {
am.emit('change', change);
});
am.stop = function (callback) {
feed.once('error', function (err) {
// ignore connection errors during stopping of feed
if (err.code !== 'ECONNREFUSED' &&
err.code !== 'ECONNRESET') {
throw err;
}
});
feed.once('stop', callback);
feed.stop();
};
// CouchDB 1.4.0 has a introduced the requirement that user fields be explicitly declared public for them to be
// returned. In the case of admins, this filtering should not be applied, but there's a bug.
// BUG: https://issues.apache.org/jira/browse/COUCHDB-1888
var couchRoot = manager._resolve('');
couchr.get(couchRoot, function(err, result) {
if (err) {
return callback(err, null);
}
if (result.version === '1.4.0') {
var config_db = manager._resolve('_config');
var publicFields = [
'_id', '_rev', 'name', 'password_sha', 'password_scheme', 'iterations',
'name', 'roles', 'derived_key', 'salt', 'database', 'hoodieId',
'updatedAt', 'signedUpAt', 'type'
];
couchr.put(config_db + '/couch_httpd_auth/public_fields', JSON.stringify(publicFields.join(',')), function() {
callback(null, am);
});
} else {
callback(null, am);
}
});
};