/// <summary>
/// Send search remove topic message
/// </summary>
/// <param name="topicHandle">Topic handle of the topic to remove</param>
/// <returns>Send message task</returns>
public async Task SendSearchRemoveTopicMessage(string topicHandle)
{
SearchRemoveTopicMessage message = new SearchRemoveTopicMessage()
{
TopicHandle = topicHandle
};
Queue queue = await this.QueueManager.GetQueue(this.QueueIdentifier);
await queue.SendAsync(message);
}
/// <summary>
/// Process message
/// </summary>
/// <param name="message">Queue message</param>
/// <returns>Process message task</returns>
protected override async Task Process(IMessage message)
{
// add a new topic to the search index
if (message is SearchIndexTopicMessage)
{
SearchIndexTopicMessage searchIndexTopicMessage = message as SearchIndexTopicMessage;
ITopicEntity topicEntity = await this.topicsManager.ReadTopic(searchIndexTopicMessage.TopicHandle);
// the topic may have been deleted before the search index topic message is processed
if (topicEntity == null)
{
this.Log.LogInformation("Could not find topic " + searchIndexTopicMessage.TopicHandle);
return;
}
// the topic may have been updated before the search index topic message is processed
if (topicEntity.LastUpdatedTime > searchIndexTopicMessage.Timestamp)
{
this.Log.LogInformation("Topic " + searchIndexTopicMessage.TopicHandle + " is newer than the queue message.");
return;
}
await this.searchManager.IndexTopic(
searchIndexTopicMessage.TopicHandle,
topicEntity.Title,
topicEntity.Text,
topicEntity.UserHandle,
topicEntity.AppHandle,
topicEntity.LastUpdatedTime);
}
// remove a topic from the search index
else if (message is SearchRemoveTopicMessage)
{
SearchRemoveTopicMessage searchRemoveTopicMessage = message as SearchRemoveTopicMessage;
await this.searchManager.RemoveTopic(searchRemoveTopicMessage.TopicHandle);
}
// add a new user to the search index
else if (message is SearchIndexUserMessage)
{
SearchIndexUserMessage searchIndexUserMessage = message as SearchIndexUserMessage;
IUserProfileEntity userProfileEntity = await this.usersManager.ReadUserProfile(searchIndexUserMessage.UserHandle, searchIndexUserMessage.AppHandle);
// the user may have been deleted before the search index user message is processed
if (userProfileEntity == null)
{
this.Log.LogInformation("Could not find user " + searchIndexUserMessage.UserHandle + " for app " + searchIndexUserMessage.AppHandle);
return;
}
// the user may have been updated before the search index user message is processed
if (userProfileEntity.LastUpdatedTime > searchIndexUserMessage.Timestamp)
{
this.Log.LogInformation("User " + searchIndexUserMessage.UserHandle + " in app " + searchIndexUserMessage.AppHandle + " is newer than the queue message.");
return;
}
await this.searchManager.IndexUser(
searchIndexUserMessage.UserHandle,
userProfileEntity.FirstName,
userProfileEntity.LastName,
searchIndexUserMessage.AppHandle);
}
// remove a user from the search index
else if (message is SearchRemoveUserMessage)
{
SearchRemoveUserMessage searchRemoveUserMessage = message as SearchRemoveUserMessage;
await this.searchManager.RemoveUser(searchRemoveUserMessage.UserHandle, searchRemoveUserMessage.AppHandle);
}
// bad message
else
{
this.Log.LogError("received message of unknown type " + message.ToString());
}
}
