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MongoUrl.cs
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MongoUrl.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.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MongoDB.Bson;
using MongoDB.Driver.Core.Clusters;
using MongoDB.Driver.Core.Configuration;
using MongoDB.Driver.Core.Misc;
using MongoDB.Driver.Core.Servers;
namespace MongoDB.Driver
{
/// <summary>
/// Represents an immutable URL style connection string. See also MongoUrlBuilder.
/// </summary>
[Serializable]
[TypeConverter(typeof(MongoUrlTypeConverter))]
public class MongoUrl : IEquatable<MongoUrl>
{
// private static fields
private static object __staticLock = new object();
private static Dictionary<string, MongoUrl> __cache = new Dictionary<string, MongoUrl>();
// private fields
private readonly bool _allowInsecureTls;
private readonly string _applicationName;
private readonly string _authenticationMechanism;
private readonly IEnumerable<KeyValuePair<string, string>> _authenticationMechanismProperties;
private readonly string _authenticationSource;
private readonly IReadOnlyList<CompressorConfiguration> _compressors;
#pragma warning disable CS0618 // Type or member is obsolete
private readonly ConnectionMode _connectionMode;
private readonly ConnectionModeSwitch _connectionModeSwitch;
#pragma warning restore CS0618 // Type or member is obsolete
private readonly TimeSpan _connectTimeout;
private readonly string _databaseName;
private readonly bool? _directConnection;
private readonly bool? _fsync;
private readonly GuidRepresentation _guidRepresentation;
private readonly TimeSpan _heartbeatInterval;
private readonly TimeSpan _heartbeatTimeout;
private readonly bool _ipv6;
private readonly bool _isResolved;
private readonly bool? _journal;
private readonly bool _loadBalanced;
private readonly int _maxConnecting;
private readonly TimeSpan _maxConnectionIdleTime;
private readonly TimeSpan _maxConnectionLifeTime;
private readonly int _maxConnectionPoolSize;
private readonly int _minConnectionPoolSize;
private readonly string _password;
private readonly ReadConcernLevel? _readConcernLevel;
private readonly ReadPreference _readPreference;
private readonly string _replicaSetName;
private readonly bool? _retryReads;
private readonly bool? _retryWrites;
private readonly TimeSpan _localThreshold;
private readonly ConnectionStringScheme _scheme;
private readonly IEnumerable<MongoServerAddress> _servers;
private readonly ServerMonitoringMode? _serverMonitoringMode;
private readonly TimeSpan _serverSelectionTimeout;
private readonly TimeSpan _socketTimeout;
private readonly int? _srvMaxHosts;
private readonly string _srvServiceName;
private readonly bool _tlsDisableCertificateRevocationCheck;
private readonly string _username;
private readonly bool _useTls;
private readonly WriteConcern.WValue _w;
private readonly double _waitQueueMultiple;
private readonly int _waitQueueSize;
private readonly TimeSpan _waitQueueTimeout;
private readonly TimeSpan? _wTimeout;
private readonly string _url;
private readonly string _originalUrl;
// constructors
/// <summary>
/// Creates a new instance of MongoUrl.
/// </summary>
/// <param name="url">The URL containing the settings.</param>
public MongoUrl(string url) : this(new MongoUrlBuilder(url))
{
_originalUrl = url;
}
internal MongoUrl(MongoUrlBuilder builder)
{
_allowInsecureTls = builder.AllowInsecureTls;
_applicationName = builder.ApplicationName;
_authenticationMechanism = builder.AuthenticationMechanism;
_authenticationMechanismProperties = builder.AuthenticationMechanismProperties;
_authenticationSource = builder.AuthenticationSource;
_compressors = builder.Compressors;
#pragma warning disable CS0618 // Type or member is obsolete
if (builder.ConnectionModeSwitch == ConnectionModeSwitch.UseConnectionMode)
{
_connectionMode = builder.ConnectionMode;
}
_connectionModeSwitch = builder.ConnectionModeSwitch;
#pragma warning restore CS0618 // Type or member is obsolete
_connectTimeout = builder.ConnectTimeout;
_databaseName = builder.DatabaseName;
#pragma warning disable CS0618 // Type or member is obsolete
if (builder.ConnectionModeSwitch == ConnectionModeSwitch.UseDirectConnection)
{
_directConnection = builder.DirectConnection;
}
#pragma warning restore CS0618 // Type or member is obsolete
_fsync = builder.FSync;
#pragma warning disable 618
if (BsonDefaults.GuidRepresentationMode == GuidRepresentationMode.V2)
{
_guidRepresentation = builder.GuidRepresentation;
}
#pragma warning restore 618
_heartbeatInterval = builder.HeartbeatInterval;
_heartbeatTimeout = builder.HeartbeatTimeout;
_ipv6 = builder.IPv6;
_isResolved = builder.Scheme != ConnectionStringScheme.MongoDBPlusSrv;
_journal = builder.Journal;
_loadBalanced = builder.LoadBalanced;
_localThreshold = builder.LocalThreshold;
_maxConnecting = builder.MaxConnecting;
_maxConnectionIdleTime = builder.MaxConnectionIdleTime;
_maxConnectionLifeTime = builder.MaxConnectionLifeTime;
_maxConnectionPoolSize = builder.MaxConnectionPoolSize;
_minConnectionPoolSize = builder.MinConnectionPoolSize;
_password = builder.Password;
_readConcernLevel = builder.ReadConcernLevel;
_readPreference = builder.ReadPreference;
_replicaSetName = builder.ReplicaSetName;
_retryReads = builder.RetryReads;
_retryWrites = builder.RetryWrites;
_scheme = builder.Scheme;
_servers = builder.Servers;
_serverMonitoringMode = builder.ServerMonitoringMode;
_serverSelectionTimeout = builder.ServerSelectionTimeout;
_socketTimeout = builder.SocketTimeout;
_srvMaxHosts = builder.SrvMaxHosts;
_srvServiceName = builder.SrvServiceName;
_tlsDisableCertificateRevocationCheck = builder.TlsDisableCertificateRevocationCheck;
_username = builder.Username;
_useTls = builder.UseTls;
_w = builder.W;
#pragma warning disable 618
_waitQueueMultiple = builder.WaitQueueMultiple;
_waitQueueSize = builder.WaitQueueSize;
#pragma warning restore 618
_waitQueueTimeout = builder.WaitQueueTimeout;
_wTimeout = builder.WTimeout;
_url = builder.ToString(); // keep canonical form
}
// public properties
/// <summary>
/// Gets whether to relax TLS constraints as much as possible.
/// </summary>
public bool AllowInsecureTls => _allowInsecureTls;
/// <summary>
/// Gets the application name.
/// </summary>
public string ApplicationName
{
get { return _applicationName; }
}
/// <summary>
/// Gets the authentication mechanism.
/// </summary>
public string AuthenticationMechanism
{
get { return _authenticationMechanism; }
}
/// <summary>
/// Gets the authentication mechanism properties.
/// </summary>
public IEnumerable<KeyValuePair<string, string>> AuthenticationMechanismProperties
{
get { return _authenticationMechanismProperties; }
}
/// <summary>
/// Gets the authentication source.
/// </summary>
public string AuthenticationSource
{
get { return _authenticationSource; }
}
/// <summary>
/// Gets the compressors.
/// </summary>
public IReadOnlyList<CompressorConfiguration> Compressors
{
get { return _compressors; }
}
/// <summary>
/// Gets the actual wait queue size (either WaitQueueSize or WaitQueueMultiple x MaxConnectionPoolSize).
/// </summary>
[Obsolete("This property will be removed in a later release.")]
public int ComputedWaitQueueSize
{
get
{
if (_waitQueueMultiple == 0.0)
{
return _waitQueueSize;
}
else
{
var effectiveMaxConnections = ConnectionStringConversions.GetEffectiveMaxConnections(_maxConnectionPoolSize);
return ConnectionStringConversions.GetComputedWaitQueueSize(effectiveMaxConnections, _waitQueueMultiple);
}
}
}
/// <summary>
/// Gets the connection mode.
/// </summary>
[Obsolete("Use DirectConnection instead.")]
public ConnectionMode ConnectionMode
{
get
{
if (_connectionModeSwitch == ConnectionModeSwitch.UseDirectConnection)
{
throw new InvalidOperationException("ConnectionMode cannot be used when ConnectionModeSwitch is set to UseDirectConnection.");
}
return _connectionMode;
}
}
/// <summary>
/// Gets the connection mode switch.
/// </summary>
[Obsolete("This property will be removed in a later release.")]
public ConnectionModeSwitch ConnectionModeSwitch
{
get { return _connectionModeSwitch; }
}
/// <summary>
/// Gets the connect timeout.
/// </summary>
public TimeSpan ConnectTimeout
{
get { return _connectTimeout; }
}
/// <summary>
/// Gets the optional database name.
/// </summary>
public string DatabaseName
{
get { return _databaseName; }
}
/// <summary>
/// Gets the direct connection.
/// </summary>
public bool? DirectConnection
{
get
{
#pragma warning disable CS0618 // Type or member is obsolete
if (_connectionModeSwitch == ConnectionModeSwitch.UseConnectionMode)
#pragma warning restore CS0618 // Type or member is obsolete
{
throw new InvalidOperationException("DirectConnection cannot be used when ConnectionModeSwitch is set to UseConnectionMode.");
}
return _directConnection;
}
}
/// <summary>
/// Gets the FSync component of the write concern.
/// </summary>
public bool? FSync
{
get { return _fsync; }
}
/// <summary>
/// Gets the representation to use for Guids.
/// </summary>
[Obsolete("Configure serializers instead.")]
public GuidRepresentation GuidRepresentation
{
get
{
if (BsonDefaults.GuidRepresentationMode != GuidRepresentationMode.V2)
{
throw new InvalidOperationException("MongoUrl.GuidRepresentation can only be used when BsonDefaults.GuidRepresentationMode is V2.");
}
return _guidRepresentation;
}
}
/// <summary>
/// Gets a value indicating whether this instance has authentication settings.
/// </summary>
public bool HasAuthenticationSettings
{
get
{
return
_username != null ||
_password != null ||
_authenticationMechanism != null;
}
}
/// <summary>
/// Gets the heartbeat interval.
/// </summary>
public TimeSpan HeartbeatInterval
{
get { return _heartbeatInterval; }
}
/// <summary>
/// Gets the heartbeat timeout.
/// </summary>
public TimeSpan HeartbeatTimeout
{
get { return _heartbeatTimeout; }
}
/// <summary>
/// Gets a value indicating whether to use IPv6.
/// </summary>
public bool IPv6
{
get { return _ipv6; }
}
/// <summary>
/// Gets a value indicating whether a connection string with scheme MongoDBPlusSrv has been resolved.
/// </summary>
public bool IsResolved
{
get { return _isResolved; }
}
/// <summary>
/// Gets the Journal component of the write concern.
/// </summary>
public bool? Journal
{
get { return _journal; }
}
/// <summary>
/// Gets or sets whether load balanced mode is used.
/// </summary>
public bool LoadBalanced
{
get { return _loadBalanced; }
}
/// <summary>
/// Gets the local threshold.
/// </summary>
public TimeSpan LocalThreshold
{
get { return _localThreshold; }
}
/// <summary>
/// Gets the maximum concurrently connecting connections.
/// </summary>
public int MaxConnecting
{
get { return _maxConnecting; }
}
/// <summary>
/// Gets the max connection idle time.
/// </summary>
public TimeSpan MaxConnectionIdleTime
{
get { return _maxConnectionIdleTime; }
}
/// <summary>
/// Gets the max connection life time.
/// </summary>
public TimeSpan MaxConnectionLifeTime
{
get { return _maxConnectionLifeTime; }
}
/// <summary>
/// Gets the max connection pool size.
/// </summary>
public int MaxConnectionPoolSize
{
get { return _maxConnectionPoolSize; }
}
/// <summary>
/// Gets the min connection pool size.
/// </summary>
public int MinConnectionPoolSize
{
get { return _minConnectionPoolSize; }
}
/// <summary>
/// Gets the password.
/// </summary>
public string Password
{
get { return _password; }
}
/// <summary>
/// Gets the read concern level.
/// </summary>
public ReadConcernLevel? ReadConcernLevel
{
get { return _readConcernLevel; }
}
/// <summary>
/// Gets the read preference.
/// </summary>
public ReadPreference ReadPreference
{
get { return _readPreference; }
}
/// <summary>
/// Gets the name of the replica set.
/// </summary>
public string ReplicaSetName
{
get { return _replicaSetName; }
}
/// <summary>
/// Gets whether reads will be retried.
/// </summary>
public bool? RetryReads
{
get { return _retryReads; }
}
/// <summary>
/// Gets whether writes will be retried.
/// </summary>
public bool? RetryWrites
{
get { return _retryWrites; }
}
/// <summary>
/// Gets the connection string scheme.
/// </summary>
public ConnectionStringScheme Scheme
{
get { return _scheme; }
}
/// <summary>
/// Gets the address of the server (see also Servers if using more than one address).
/// </summary>
public MongoServerAddress Server
{
get { return (_servers == null) ? null : _servers.Single(); }
}
/// <summary>
/// Gets the list of server addresses (see also Server if using only one address).
/// </summary>
public IEnumerable<MongoServerAddress> Servers
{
get { return _srvMaxHosts > 0 ? _servers.Take(_srvMaxHosts.Value) : _servers; }
}
/// <summary>
/// Gets the server monitoring mode to use.
/// </summary>
public ServerMonitoringMode? ServerMonitoringMode
{
get { return _serverMonitoringMode; }
}
/// <summary>
/// Gets the server selection timeout.
/// </summary>
public TimeSpan ServerSelectionTimeout
{
get { return _serverSelectionTimeout; }
}
/// <summary>
/// Gets the socket timeout.
/// </summary>
public TimeSpan SocketTimeout
{
get { return _socketTimeout; }
}
/// <summary>
/// Limits the number of SRV records used to populate the seedlist
/// during initial discovery, as well as the number of additional hosts
/// that may be added during SRV polling.
/// </summary>
public int? SrvMaxHosts => _srvMaxHosts;
/// <summary>
/// Gets the SRV service name which modifies the srv URI to look like:
/// <code>_{srvServiceName}._tcp.{hostname}.{domainname}</code>
/// </summary>
public string SrvServiceName
{
get { return _srvServiceName; }
}
/// <summary>
/// Gets whether or not to disable checking certificate revocation status during the TLS handshake.
/// </summary>
public bool TlsDisableCertificateRevocationCheck => _tlsDisableCertificateRevocationCheck;
/// <summary>
/// Gets the URL (in canonical form).
/// </summary>
public string Url
{
get { return _url; }
}
/// <summary>
/// Gets the username.
/// </summary>
public string Username
{
get { return _username; }
}
/// <summary>
/// Gets a value indicating whether to use SSL.
/// </summary>
[Obsolete("Use UseTls instead.")]
public bool UseSsl => _useTls;
/// <summary>
/// Gets a value indicating whether to use TLS.
/// </summary>
public bool UseTls => _useTls;
/// <summary>
/// Gets a value indicating whether to verify an SSL certificate.
/// </summary>
[Obsolete("Use AllowInsecureTls instead.")]
public bool VerifySslCertificate => !_allowInsecureTls;
/// <summary>
/// Gets the W component of the write concern.
/// </summary>
public WriteConcern.WValue W
{
get { return _w; }
}
/// <summary>
/// Gets the wait queue multiple (the actual wait queue size will be WaitQueueMultiple x MaxConnectionPoolSize).
/// </summary>
[Obsolete("This property will be removed in a later release.")]
public double WaitQueueMultiple
{
get { return _waitQueueMultiple; }
}
/// <summary>
/// Gets the wait queue size.
/// </summary>
[Obsolete("This property will be removed in a later release.")]
public int WaitQueueSize
{
get { return _waitQueueSize; }
}
/// <summary>
/// Gets the wait queue timeout.
/// </summary>
public TimeSpan WaitQueueTimeout
{
get { return _waitQueueTimeout; }
}
/// <summary>
/// Gets the WTimeout component of the write concern.
/// </summary>
public TimeSpan? WTimeout
{
get { return _wTimeout; }
}
// public operators
/// <summary>
/// Compares two MongoUrls.
/// </summary>
/// <param name="lhs">The first URL.</param>
/// <param name="rhs">The other URL.</param>
/// <returns>True if the two URLs are equal (or both null).</returns>
public static bool operator ==(MongoUrl lhs, MongoUrl rhs)
{
return object.Equals(lhs, rhs);
}
/// <summary>
/// Compares two MongoUrls.
/// </summary>
/// <param name="lhs">The first URL.</param>
/// <param name="rhs">The other URL.</param>
/// <returns>True if the two URLs are not equal (or one is null and the other is not).</returns>
public static bool operator !=(MongoUrl lhs, MongoUrl rhs)
{
return !(lhs == rhs);
}
// public static methods
/// <summary>
/// Clears the URL cache. When a URL is parsed it is stored in the cache so that it doesn't have to be
/// parsed again. There is rarely a need to call this method.
/// </summary>
public static void ClearCache()
{
__cache.Clear();
}
/// <summary>
/// Creates an instance of MongoUrl (might be an existing existence if the same URL has been used before).
/// </summary>
/// <param name="url">The URL containing the settings.</param>
/// <returns>An instance of MongoUrl.</returns>
public static MongoUrl Create(string url)
{
// cache previously seen urls to avoid repeated parsing
lock (__staticLock)
{
MongoUrl mongoUrl;
if (!__cache.TryGetValue(url, out mongoUrl))
{
mongoUrl = new MongoUrl(url);
var canonicalUrl = mongoUrl.ToString();
if (canonicalUrl != url)
{
if (__cache.ContainsKey(canonicalUrl))
{
mongoUrl = __cache[canonicalUrl]; // use existing MongoUrl
}
else
{
__cache[canonicalUrl] = mongoUrl; // cache under canonicalUrl also
}
}
__cache[url] = mongoUrl;
}
return mongoUrl;
}
}
// public methods
/// <summary>
/// Compares two MongoUrls.
/// </summary>
/// <param name="rhs">The other URL.</param>
/// <returns>True if the two URLs are equal.</returns>
public bool Equals(MongoUrl rhs)
{
if (object.ReferenceEquals(rhs, null) || GetType() != rhs.GetType()) { return false; }
return _url == rhs._url; // this works because URL is in canonical form
}
/// <summary>
/// Compares two MongoUrls.
/// </summary>
/// <param name="obj">The other URL.</param>
/// <returns>True if the two URLs are equal.</returns>
public override bool Equals(object obj)
{
return Equals(obj as MongoUrl); // works even if obj is null or of a different type
}
/// <summary>
/// Gets the credential.
/// </summary>
/// <returns>The credential (or null if the URL has not authentication settings).</returns>
public MongoCredential GetCredential()
{
if (HasAuthenticationSettings)
{
return MongoCredential.FromComponents(
_authenticationMechanism,
_authenticationSource,
_databaseName,
_username,
_password);
}
else
{
return null;
}
}
/// <summary>
/// Gets the hash code.
/// </summary>
/// <returns>The hash code.</returns>
public override int GetHashCode()
{
return _url.GetHashCode(); // this works because URL is in canonical form
}
/// <summary>
/// Returns a WriteConcern value based on this instance's settings and a default enabled value.
/// </summary>
/// <param name="enabledDefault">The default enabled value.</param>
/// <returns>A WriteConcern.</returns>
public WriteConcern GetWriteConcern(bool enabledDefault)
{
if (_w == null && !_wTimeout.HasValue && !_fsync.HasValue && !_journal.HasValue)
{
return enabledDefault ? WriteConcern.Acknowledged : WriteConcern.Unacknowledged;
}
return new WriteConcern(_w, _wTimeout, _fsync, _journal);
}
/// <summary>
/// Resolves a connection string. If the connection string indicates more information is available
/// in the DNS system, it will acquire that information as well.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A resolved MongoURL.</returns>
public MongoUrl Resolve(CancellationToken cancellationToken = default(CancellationToken))
{
return Resolve(resolveHosts: true, cancellationToken);
}
/// <summary>
/// Resolves a connection string. If the connection string indicates more information is available
/// in the DNS system, it will acquire that information as well.
/// </summary>
/// <param name="resolveHosts">Whether to resolve hosts.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A resolved MongoURL.</returns>
public MongoUrl Resolve(bool resolveHosts, CancellationToken cancellationToken = default(CancellationToken))
{
if (_isResolved)
{
return this;
}
var connectionString = new ConnectionString(_originalUrl);
var resolved = connectionString.Resolve(resolveHosts, cancellationToken);
var mongoUrlBuilder = new MongoUrlBuilder(resolved);
return new MongoUrl(mongoUrlBuilder);
}
/// <summary>
/// Resolves a connection string. If the connection string indicates more information is available
/// in the DNS system, it will acquire that information as well.
/// </summary>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A resolved MongoURL.</returns>
public Task<MongoUrl> ResolveAsync(CancellationToken cancellationToken = default(CancellationToken))
{
return ResolveAsync(resolveHosts: true);
}
/// <summary>
/// Resolves a connection string. If the connection string indicates more information is available
/// in the DNS system, it will acquire that information as well.
/// </summary>
/// <param name="resolveHosts">Whether to resolve hosts.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>A resolved MongoURL.</returns>
public async Task<MongoUrl> ResolveAsync(bool resolveHosts, CancellationToken cancellationToken = default(CancellationToken))
{
if (_isResolved)
{
return this;
}
var connectionString = new ConnectionString(_originalUrl);
var resolved = await connectionString.ResolveAsync(resolveHosts, cancellationToken).ConfigureAwait(false);
var mongoUrlBuilder = new MongoUrlBuilder(resolved);
return new MongoUrl(mongoUrlBuilder);
}
/// <summary>
/// Returns the canonical URL based on the settings in this MongoUrlBuilder.
/// </summary>
/// <returns>The canonical URL.</returns>
public override string ToString()
{
return _url;
}
// private methods
private bool AnyWriteConcernSettingsAreSet()
{
return _fsync != null || _journal != null || _w != null || _wTimeout != null;
}
}
}