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MongoServerAddress.cs
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MongoServerAddress.cs
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/* Copyright 2010-present MongoDB Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file 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.
*/
using System;
using System.Text.RegularExpressions;
using MongoDB.Bson.IO;
namespace MongoDB.Driver
{
/// <summary>
/// The address of a MongoDB server.
/// </summary>
[Serializable]
public class MongoServerAddress : IEquatable<MongoServerAddress>
{
// private fields
private string _host;
private int _port;
// constructors
/// <summary>
/// Initializes a new instance of MongoServerAddress.
/// </summary>
/// <param name="host">The server's host name.</param>
public MongoServerAddress(string host)
{
_host = host;
_port = 27017;
}
/// <summary>
/// Initializes a new instance of MongoServerAddress.
/// </summary>
/// <param name="host">The server's host name.</param>
/// <param name="port">The server's port number.</param>
public MongoServerAddress(string host, int port)
{
_host = host;
_port = port;
}
// factory methods
/// <summary>
/// Parses a string representation of a server address.
/// </summary>
/// <param name="value">The string representation of a server address.</param>
/// <returns>A new instance of MongoServerAddress initialized with values parsed from the string.</returns>
public static MongoServerAddress Parse(string value)
{
MongoServerAddress address;
if (TryParse(value, out address))
{
return address;
}
else
{
var message = string.Format("'{0}' is not a valid server address.", value);
throw new FormatException(message);
}
}
/// <summary>
/// Tries to parse a string representation of a server address.
/// </summary>
/// <param name="value">The string representation of a server address.</param>
/// <param name="address">The server address (set to null if TryParse fails).</param>
/// <returns>True if the string is parsed succesfully.</returns>
public static bool TryParse(string value, out MongoServerAddress address)
{
// don't throw ArgumentNullException if value is null
if (value != null)
{
Match match = Regex.Match(value, @"^(?<host>(\[[^]]+\]|[^:\[\]]+))(:(?<port>\d+))?$");
if (match.Success)
{
string host = match.Groups["host"].Value;
string portString = match.Groups["port"].Value;
int port = (portString == "") ? 27017 : JsonConvert.ToInt32(portString);
address = new MongoServerAddress(host, port);
return true;
}
}
address = null;
return false;
}
// public properties
/// <summary>
/// Gets the server's host name.
/// </summary>
public string Host
{
get { return _host; }
}
/// <summary>
/// Gets the server's port number.
/// </summary>
public int Port
{
get { return _port; }
}
// public operators
/// <summary>
/// Compares two server addresses.
/// </summary>
/// <param name="lhs">The first address.</param>
/// <param name="rhs">The other address.</param>
/// <returns>True if the two addresses are equal (or both are null).</returns>
public static bool operator ==(MongoServerAddress lhs, MongoServerAddress rhs)
{
return object.Equals(lhs, rhs);
}
/// <summary>
/// Compares two server addresses.
/// </summary>
/// <param name="lhs">The first address.</param>
/// <param name="rhs">The other address.</param>
/// <returns>True if the two addresses are not equal (or one is null and the other is not).</returns>
public static bool operator !=(MongoServerAddress lhs, MongoServerAddress rhs)
{
return !(lhs == rhs);
}
// public methods
/// <summary>
/// Compares two server addresses.
/// </summary>
/// <param name="rhs">The other server address.</param>
/// <returns>True if the two server addresses are equal.</returns>
public bool Equals(MongoServerAddress rhs)
{
if (object.ReferenceEquals(rhs, null) || GetType() != rhs.GetType()) { return false; }
return _host.Equals(rhs._host, StringComparison.OrdinalIgnoreCase) && _port == rhs._port;
}
/// <summary>
/// Compares two server addresses.
/// </summary>
/// <param name="obj">The other server address.</param>
/// <returns>True if the two server addresses are equal.</returns>
public override bool Equals(object obj)
{
return Equals(obj as MongoServerAddress); // works even if obj is null or of a different type
}
/// <summary>
/// Gets the hash code for this object.
/// </summary>
/// <returns>The hash code.</returns>
public override int GetHashCode()
{
// see Effective Java by Joshua Bloch
int hash = 17;
hash = 37 * hash + _host.ToLowerInvariant().GetHashCode();
hash = 37 * hash + _port.GetHashCode();
return hash;
}
/// <summary>
/// Returns a string representation of the server address.
/// </summary>
/// <returns>A string representation of the server address.</returns>
public override string ToString()
{
return string.Format("{0}:{1}", _host, _port);
}
}
}