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FLocal/Common/dataobjects/Session.cs

156 lines
4.4 KiB

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml.Linq;
using FLocal.Core;
using FLocal.Core.DB;
using FLocal.Core.DB.conditions;
using FLocal.Common.actions;
namespace FLocal.Common.dataobjects {
public class Session : SqlObject<Session.SessionKey, Session> {
public struct SessionKey : IEquatable<SessionKey> {
private string key;
public static SessionKey Parse(string _key) {
if(_key == null) {
throw new FLocalException("SessionKey is null");
}
return new SessionKey { key = _key };
}
bool IEquatable<SessionKey>.Equals(SessionKey _key) {
return this.key.Equals(_key.key);
}
public override bool Equals(object obj) {
if(obj == null) return base.Equals(obj);
if(!(obj is SessionKey)) throw new InvalidCastException();
return ((IEquatable<SessionKey>)this).Equals((SessionKey)obj);
}
public override int GetHashCode() {
return this.key.GetHashCode();
}
public override string ToString() {
return this.key;
}
}
public class TableSpec : ISqlObjectTableSpec {
public const string TABLE = "Sessions";
public const string FIELD_ID = FIELD_SESSIONKEY;
public const string FIELD_SESSIONKEY = "SessionKey";
public const string FIELD_ACCOUNTID = "AccountId";
public const string FIELD_LASTACTIVITY = "LastActivity";
public static readonly TableSpec instance = new TableSpec();
public string name { get { return TABLE; } }
public string idName { get { return FIELD_ID; } }
public void refreshSqlObject(int id) { throw new NotImplementedException(); }
}
protected override ISqlObjectTableSpec table { get { return TableSpec.instance; } }
private string _sessionKey;
public string sessionKey {
get {
this.LoadIfNotLoaded();
return this._sessionKey;
}
}
private int _accountId;
public int accountId {
get {
this.LoadIfNotLoaded();
return this._accountId;
}
}
public Account account {
get {
return Account.LoadById(this.accountId);
}
}
private DateTime _lastActivity;
public DateTime lastActivity {
get {
this.LoadIfNotLoaded();
return this._lastActivity;
}
}
protected override void doFromHash(Dictionary<string, string> data) {
this._sessionKey = data[TableSpec.FIELD_SESSIONKEY];
this._lastActivity = new DateTime(long.Parse(data[TableSpec.FIELD_LASTACTIVITY]));
this._accountId = int.Parse(data[TableSpec.FIELD_ACCOUNTID]);
}
public void updateLastActivity() {
if(DateTime.Now.Subtract(this.lastActivity).TotalSeconds < 30) return; //to partially remove db load
try {
Config.Transactional(transaction => {
Config.instance.mainConnection.update(
transaction,
TableSpec.instance,
this.id.ToString(),
new Dictionary<string,string>() {
{ TableSpec.FIELD_LASTACTIVITY, DateTime.Now.ToUTCString() }
}
);
});
} finally {
this.ReLoad();
}
}
public static Session create(Account account) {
string key=null;
Config.Transactional(transaction => {
Config.instance.mainConnection.lockTable(transaction, TableSpec.instance);
do {
key = Util.RandomString(32, Util.RandomSource.LETTERS_DIGITS);
} while(Config.instance.mainConnection.LoadByIds(transaction, TableSpec.instance, new List<string>() { key }).Count > 0);
Config.instance.mainConnection.insert(
transaction,
TableSpec.instance,
new Dictionary<string,string>() {
{ TableSpec.FIELD_SESSIONKEY, key },
{ TableSpec.FIELD_ACCOUNTID, account.id.ToString() },
{ TableSpec.FIELD_LASTACTIVITY, DateTime.Now.ToUTCString() },
}
);
});
return Session.LoadById(SessionKey.Parse(key));
}
public void delete() {
Config.Transactional(transaction => Config.instance.mainConnection.delete(transaction, TableSpec.instance, this.id.ToString()));
this.deleteFromRegistry();
}
public XElement exportToXml(UserContext context) {
return new XElement("session",
new XElement("lastActivity", this.lastActivity.ToXml()),
new XElement("sessionKey", this.sessionKey),
this.account.user.exportToXmlForViewing(context),
AccountIndicator.LoadByAccount(this.account).exportToXml(context)
);
}
public static Session LoadByKey(string sessionKey) {
return LoadById(SessionKey.Parse(sessionKey));
}
}
}