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'use strict';
const BaseConnection = require('./connection.js');
class BasePoolConnection extends BaseConnection {
constructor(pool, options) {
super(options);
this._pool = pool;
// The last active time of this connection
this.lastActiveTime = Date.now();
// 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.
// REVIEW: Moved to `once`
this.once('end', () => {
this._removeFromPool();
});
this.once('error', () => {
this._removeFromPool();
});
}
release() {
if (!this._pool || this._pool._closed) {
return;
}
// update last active time
this.lastActiveTime = Date.now();
this._pool.releaseConnection(this);
}
end() {
const err = new Error(
'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.emit('warn', err);
console.warn(err.message);
this.release();
}
destroy() {
this._removeFromPool();
super.destroy();
}
_removeFromPool() {
if (!this._pool || this._pool._closed) {
return;
}
const pool = this._pool;
this._pool = null;
pool._removeConnection(this);
}
}
BasePoolConnection.statementKey = BaseConnection.statementKey;
module.exports = BasePoolConnection;
// TODO: Remove this when we are removing PoolConnection#end
BasePoolConnection.prototype._realEnd = BaseConnection.prototype.end;