/// <summary>
/// <para>Events:</para>
/// <para>@emits died - (error: Error)</para>
/// <para>@emits @success</para>
/// <para>@emits @failure - (error: Error)</para>
/// <para>Observer events:</para>
/// <para>@emits close</para>
/// <para>@emits newrouter - (router: Router)</para>
/// </summary>
/// <param name="loggerFactory"></param>
/// <param name="hostEnvironment"></param>
/// <param name="mediasoupOptions"></param>
public Worker(ILoggerFactory loggerFactory, MediasoupOptions mediasoupOptions)
{
_loggerFactory = loggerFactory;
_logger = loggerFactory.CreateLogger <Worker>();
_closeLock.Set();
var workerPath = mediasoupOptions.MediasoupStartupSettings.WorkerPath;
if (workerPath.IsNullOrWhiteSpace())
{
// 见：https://docs.microsoft.com/en-us/dotnet/core/rid-catalog
string rid;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
rid = "linux";
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
rid = "osx";
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
rid = "win";
}
else
{
throw new NotSupportedException("Unsupported platform");
}
var location = Assembly.GetEntryAssembly().Location;
var directory = Path.GetDirectoryName(location);
workerPath = Path.Combine(directory, "runtimes", rid, "native", "mediasoup-worker");
}
var workerSettings = mediasoupOptions.MediasoupSettings.WorkerSettings;
AppData = workerSettings.AppData;
var env = new[] { $"MEDIASOUP_VERSION={mediasoupOptions.MediasoupStartupSettings.MediasoupVersion}" };
var args = new List <string>
{
workerPath
};
if (workerSettings.LogLevel.HasValue)
{
args.Add($"--logLevel={workerSettings.LogLevel.GetEnumStringValue()}");
}
if (!workerSettings.LogTags.IsNullOrEmpty())
{
workerSettings.LogTags.ForEach(m => args.Add($"--logTag={m.GetEnumStringValue()}"));
}
if (workerSettings.RtcMinPort.HasValue)
{
args.Add($"--rtcMinPort={workerSettings.RtcMinPort}");
}
if (workerSettings.RtcMaxPort.HasValue)
{
args.Add($"--rtcMaxPort={workerSettings.RtcMaxPort}");
}
if (!workerSettings.DtlsCertificateFile.IsNullOrWhiteSpace())
{
args.Add($"--dtlsCertificateFile={workerSettings.DtlsCertificateFile}");
}
if (!workerSettings.DtlsPrivateKeyFile.IsNullOrWhiteSpace())
{
args.Add($"--dtlsPrivateKeyFile={workerSettings.DtlsPrivateKeyFile}");
}
_logger.LogDebug($"Worker() | Spawning worker process: {args.Join(" ")}");
_pipes = new Pipe[StdioCount];
// fd 0 (stdin) : Just ignore it. (忽略标准输入)
// fd 1 (stdout) : Pipe it for 3rd libraries that log their own stuff.
// fd 2 (stderr) : Same as stdout.
// fd 3 (channel) : Producer Channel fd.
// fd 4 (channel) : Consumer Channel fd.
// fd 5 (channel) : Producer PayloadChannel fd.
// fd 6 (channel) : Consumer PayloadChannel fd.
for (var i = 1; i < StdioCount; i++)
{
_pipes[i] = new Pipe()
{
Writeable = true, Readable = true
};
}
try
{
// 和 Node.js 不同，_child 没有 error 事件。不过，Process.Spawn 可抛出异常。
_child = Process.Spawn(new ProcessOptions()
{
File = workerPath,
Arguments = args.ToArray(),
Environment = env,
Detached = false,
Streams = _pipes,
}, OnExit);
ProcessId = _child.Id;
}
catch (Exception ex)
{
_child = null;
CloseAsync().ConfigureAwait(false).GetAwaiter().GetResult();
if (!_spawnDone)
{
_spawnDone = true;
_logger.LogError(ex, $"Worker() | Worker process failed [pid:{ProcessId}]");
Emit("@failure", ex);
}
else
{
// 执行到这里的可能性？
_logger.LogError(ex, $"Worker() | Worker process error [pid:{ProcessId}]");
Emit("died", ex);
}
}
_channel = new Channel(_loggerFactory.CreateLogger <Channel>(), _pipes[3], _pipes[4], ProcessId);
_channel.MessageEvent += OnChannelMessage;
_payloadChannel = new PayloadChannel(_loggerFactory.CreateLogger <PayloadChannel>(), _pipes[5], _pipes[6], ProcessId);
_pipes.ForEach(m => m?.Resume());
}
/// <summary>
/// <para>Events:</para>
/// <para>@emits died - (error: Error)</para>
/// <para>@emits @success</para>
/// <para>@emits @failure - (error: Error)</para>
/// <para>Observer events:</para>
/// <para>@emits close</para>
/// <para>@emits newrouter - (router: Router)</para>
/// </summary>
/// <param name="loggerFactory"></param>
/// <param name="mediasoupOptions"></param>
public Worker(ILoggerFactory loggerFactory, MediasoupOptions mediasoupOptions)
{
_loggerFactory = loggerFactory;
_logger = loggerFactory.CreateLogger <Worker>();
var workerSettings = mediasoupOptions.MediasoupSettings.WorkerSettings;
AppData = workerSettings.AppData;
var env = new[] { $"MEDIASOUP_VERSION={mediasoupOptions.MediasoupStartupSettings.MediasoupVersion}" };
var args = new List <string>
{
mediasoupOptions.MediasoupStartupSettings.WorkerPath
};
if (workerSettings.LogLevel.HasValue)
{
args.Add($"--logLevel={Enum.GetName(typeof(WorkerLogLevel), workerSettings.LogLevel).ToLowerInvariant()}");
}
if (!workerSettings.LogTags.IsNullOrEmpty())
{
workerSettings.LogTags.ForEach(m => args.Add($"--logTag={m}"));
}
if (workerSettings.RtcMinPort.HasValue)
{
args.Add($"--rtcMinPort={workerSettings.RtcMinPort}");
}
if (workerSettings.RtcMaxPort.HasValue)
{
args.Add($"--rtcMaxPort={workerSettings.RtcMaxPort}");
}
if (!workerSettings.DtlsCertificateFile.IsNullOrWhiteSpace())
{
args.Add($"--dtlsCertificateFile={workerSettings.DtlsCertificateFile}");
}
if (!workerSettings.DtlsPrivateKeyFile.IsNullOrWhiteSpace())
{
args.Add($"--dtlsPrivateKeyFile={workerSettings.DtlsPrivateKeyFile}");
}
_logger.LogDebug($"Worker() | spawning worker process: {args.ToArray().Join(" ")}");
_pipes = new Pipe[StdioCount];
// 备注：忽略标准输入
for (var i = 1; i < StdioCount; i++)
{
_pipes[i] = new Pipe()
{
Writeable = true, Readable = true
};
}
try
{
// 备注：和 Node.js 不同，_child 没有 error 事件。不过，Process.Spawn 可抛出异常。
_child = Process.Spawn(new ProcessOptions()
{
File = mediasoupOptions.MediasoupStartupSettings.WorkerPath,
Arguments = args.ToArray(),
Environment = env,
Detached = false,
Streams = _pipes,
}, OnExit);
ProcessId = _child.Id;
}
catch (Exception ex)
{
_child = null;
Close();
if (!_spawnDone)
{
_spawnDone = true;
_logger.LogError($"Worker() | worker process failed [pid:{ProcessId}]: {ex.Message}");
Emit("@failure", ex);
}
else
{
// 执行到这里的可能性？
_logger.LogError($"Worker() | worker process error [pid:{ProcessId}]: {ex.Message}");
Emit("died", ex);
}
}
_channel = new Channel(_loggerFactory.CreateLogger <Channel>(), _pipes[3], _pipes[4], ProcessId);
_channel.RunningEvent += OnChannelRunning;
_pipes.ForEach(m => m?.Resume());
}
