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var inherits = require('util').inherits;
var Connection = require('./Connection');
var Events = require('events');
module.exports = PoolConnection;
inherits(PoolConnection, Connection);
function PoolConnection(pool, options) {
Connection.call(this, options);
this._pool = pool;
// Bind connection to pool domain
if (Events.usingDomains) {
this.domain = pool.domain;
}
// When a fatal error occurs the connection's protocol ends, which will cause
// the connection to end as well, thus we only need to watch for the end event
// and we will be notified of disconnects.
this.on('end', this._removeFromPool);
this.on('error', function (err) {
if (err.fatal) {
this._removeFromPool();
}
});
}
PoolConnection.prototype.release = function release() {
var pool = this._pool;
if (!pool || pool._closed) {
return undefined;
}
return pool.releaseConnection(this);
};
// TODO: Remove this when we are removing PoolConnection#end
PoolConnection.prototype._realEnd = Connection.prototype.end;
PoolConnection.prototype.end = function () {
console.warn(
'Calling conn.end() to release a pooled connection is ' +
'deprecated. In next version calling conn.end() will be ' +
'restored to default conn.end() behavior. Use ' +
'conn.release() instead.'
);
this.release();
};
PoolConnection.prototype.destroy = function () {
Connection.prototype.destroy.apply(this, arguments);
this._removeFromPool(this);
};
PoolConnection.prototype._removeFromPool = function _removeFromPool() {
if (!this._pool || this._pool._closed) {
return;
}
var pool = this._pool;
this._pool = null;
pool._purgeConnection(this);
};