/// <summary>
/// 本地代理不需要留存心跳
/// </summary>
/// <param name="agent"></param>
/// <returns></returns>
public Task HeartbeatAsync(DownloaderAgentHeartbeat agent)
{
#if NETFRAMEWORK
return(DotnetSpider.Core.Framework.CompletedTask);
#else
return(Task.CompletedTask);
#endif
}
/// <summary>
/// 本地代理不需要留存心跳
/// </summary>
/// <param name="heartbeat"></param>
/// <returns></returns>
public Task HeartbeatAsync(DownloaderAgentHeartbeat heartbeat)
{
if (_agents.TryGetValue(heartbeat.AgentId, out var agent))
{
agent.LastModificationTime = DateTime.Now;
}
return(Task.CompletedTask);
}
public async Task HeartbeatAsync(DownloaderAgentHeartbeat agent)
{
using (var conn = new MySqlConnection(_options.ConnectionString))
{
await conn.ExecuteAsync(
$"INSERT IGNORE INTO dotnetspider.downloader_agent_heartbeat (agent_id, agent_name, free_memory, downloader_count, creation_time) VALUES (@AgentId, @AgentName, @FreeMemory, @DownloaderCount, @CreationTime);",
agent);
await conn.ExecuteAsync(
$"UPDATE dotnetspider.downloader_agent SET last_modification_time = @LastModificationTime WHERE id = @AgentId",
new {agent.AgentId, LastModificationTime = agent.CreationTime});
}
}
public async Task HeartbeatAsync(DownloaderAgentHeartbeat agent)
{
using (var conn = new MySqlConnection(_options.ConnectionString))
{
var obj = await conn.QueryFirstOrDefaultAsync <dynamic>(
$"SELECT id FROM dotnetspider.downloader_agent WHERE id = @Id && is_deleted = false LIMIT 1;",
new
{
agent.Id
});
if (obj != null)
{
await conn.ExecuteAsync(
$"INSERT IGNORE INTO dotnetspider.downloader_agent_heartbeat (agent_id, agent_name, free_memory, downloader_count, creation_time) VALUES (@AgentId, @AgentName, @FreeMemory, @DownloaderCount, @CreationTime);",
agent);
await conn.ExecuteAsync(
$"UPDATE dotnetspider.downloader_agent SET last_modification_time = @LastModificationTime WHERE id = @AgentId",
new { agent.AgentId, LastModificationTime = agent.CreationTime });
}
}
}
/// <summary>
/// 本地代理不需要留存心跳
/// </summary>
/// <param name="agent"></param>
/// <returns></returns>
public Task HeartbeatAsync(DownloaderAgentHeartbeat agent)
{
return(Task.CompletedTask);
}
