/// <summary>
/// Update the session
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <param name="id">The Id of the session</param>
/// <param name="session">The session to be persisted</param>
/// <exception cref="InvalidOperationException">If the update errors</exception>
public static async Task UpdateSession(RethinkDbSessionConfiguration configuration, string id, ISession session)
{
var sessionDocument = new RethinkDbSessionDocument
{
Id = id,
LastAccessed = DateTime.Now,
Data = session.ToDictionary(item => item.Key, item => item.Value)
};
Func <Get, Update> update = get => {
if (configuration.UseRollingSessions)
{
return(get.Update(new
{
LastAccessed = sessionDocument.LastAccessed,
Data = sessionDocument.Data
}));
}
else
{
return(get.Update(new { Data = sessionDocument.Data }));
}
};
var result = await update(Table(configuration).Get(id)).RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Format("Unable to save data for session Id {0}: {1}", id,
result.FirstError));
}
}
/// <summary>
/// Initialise and add RethinkDB session storage hooks to the application pipeline
/// </summary>
/// <param name="pipelines">Application pipelines</param>
/// <param name="connection">The RethinkDB connection to use for session storage</param>
/// <param name="cryptographyConfiguration">Cryptography configuration</param>
public static void Enable(IPipelines pipelines, IConnection connection,
CryptographyConfiguration cryptographyConfiguration)
{
var rethinkDbSessionConfiguration = new RethinkDbSessionConfiguration(connection, cryptographyConfiguration)
{
Serializer = new DefaultObjectSerializer()
};
Enable(pipelines, rethinkDbSessionConfiguration);
}
/// <summary>
/// Update the last accessed date/time for a session
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <param name="id">The Id of the session to be updated</param>
/// <exception cref="InvalidOperationException">If there is an error updating the session</exception>
public static async Task UpdateLastAccessed(RethinkDbSessionConfiguration configuration, string id)
{
var result = await Table(configuration).Get(id).Update(new { LastAccessed = DateTime.Now })
.RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Format("Could not update last access for session Id {0}: {1}",
id, result.FirstError));
}
}
/// <summary>
/// Expire (delete) old sessions
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <exception cref="InvalidOperationException">If there is an error deleting old sessions</exception>
public static async Task ExpireSessions(RethinkDbSessionConfiguration configuration)
{
var result = await Table(configuration).Between(R.Minval(), DateTime.Now - configuration.Expiry)
.OptArg("index", nameof(RethinkDbSessionDocument.LastAccessed))
.Delete()
.RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Concat("Error expiring sessions: ", result.FirstError));
}
}
/// <summary>
/// Initialise and add RethinkDB session storage hooks to the application pipeline
/// </summary>
/// <param name="pipelines">Application pipelines</param>
/// <param name="configuration">Cookie based sessions configuration.</param>
public static void Enable(IPipelines pipelines, RethinkDbSessionConfiguration configuration)
{
if (pipelines == null)
{
throw new ArgumentNullException("pipelines");
}
var sessionStore = new RethinkDbSessions(configuration);
pipelines.BeforeRequest.AddItemToStartOfPipeline(ctx => LoadSession(ctx, sessionStore));
pipelines.AfterRequest.AddItemToEndOfPipeline(ctx => SaveSession(ctx, sessionStore));
}
/// <summary>
/// Create a new session
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <param name="id">The Id of the session to create</param>
/// <exception cref="InvalidOperationException">If the session cannot be created</exception>
public static async Task NewSession(RethinkDbSessionConfiguration configuration, string id)
{
var result = await Table(configuration).Insert(new RethinkDbSessionDocument
{
Id = id,
LastAccessed = DateTime.Now,
Data = new Dictionary <string, object>()
}).RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Format("Could not create new session Id {0}: {1}", id,
result.FirstError));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="RethinkDbSessions"/> class.
/// </summary>
/// <param name="configuration">Cookie based sessions configuration.</param>
public RethinkDbSessions(RethinkDbSessionConfiguration configuration)
{
if (configuration == null)
{
throw new ArgumentNullException("configuration");
}
if (!configuration.IsValid)
{
throw new ArgumentException("Configuration is invalid", "configuration");
}
this.currentConfiguration = configuration;
this.Await(RethinkDbSessionStore.SetUp(this.currentConfiguration));
}
/// <summary>
/// Retrieve a session from the store
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <param name="id">The Id of the session to retrieve</param>
/// <returns>The session (null if a session with the given Id is not found)</returns>
public static async Task <ISession> RetrieveSession(RethinkDbSessionConfiguration configuration, string id)
{
var doc = await Table(configuration).Get(id)
.RunAtomAsync <RethinkDbSessionDocument>(configuration.Connection);
if (null == doc)
{
return(null);
}
var session = new Session(doc.Data);
session["_id"] = id;
return(session);
}
/// <summary>
/// Create the database if it does not exist
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <exception cref="InvalidOperationException">If there is a problem creating the database</exception>
private static async Task DatabaseCheck(RethinkDbSessionConfiguration configuration)
{
var databases = await R.DbList().RunAtomAsync <List <string> >(configuration.Connection);
if (!databases.Contains(configuration.Database))
{
var result = await R.DbCreate(configuration.Database).RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Format(
"Could not create RethinkDB session store database {0}: {1}", configuration.Database,
result.FirstError));
}
}
}
/// <summary>
/// Create the index on the last accessed date/time if it does not exist
/// </summary>
/// <param name="configuration">The session store configuration</param>
/// <exception cref="InvalidOperationException">If there is a problem creating the index</exception>
private static async Task IndexCheck(RethinkDbSessionConfiguration configuration)
{
var indexName = nameof(RethinkDbSessionDocument.LastAccessed);
var indexes = await Table(configuration).IndexList()
.RunAtomAsync <List <string> >(configuration.Connection);
if (!indexes.Contains(indexName))
{
var result = await R.Db(configuration.Database).Table(configuration.Table).IndexCreate(indexName)
.RunResultAsync(configuration.Connection);
if (0 != result.Errors)
{
throw new InvalidOperationException(String.Format(
"Could not create last accessed index on RethinkDB session store table {0}.{1}: {2}",
configuration.Database, configuration.Table, result.FirstError));
}
}
}
/// <summary> /// Shorthand to get the session table /// </summary> /// <param name="configuration">The session store configuration</param> /// <returns>The table reference for further manipulation</returns> private static Table Table(RethinkDbSessionConfiguration configuration) => R.Db(configuration.Database).Table(configuration.Table);
/// <summary>
/// Set up the session store; ensures the database, table, and required indexes exist
/// </summary>
/// <param name="configuration">The session store configuration</param>
public static async Task SetUp(RethinkDbSessionConfiguration configuration)
{
await DatabaseCheck(configuration);
await TableCheck(configuration);
}