102 lines
3.5 KiB
C#
102 lines
3.5 KiB
C#
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namespace YooAsset
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{
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internal class DefaultGetRemotePackageVersionOperation : AsyncOperationBase
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{
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private enum ESteps
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{
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None,
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RequestPackageVersion,
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Done,
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}
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private readonly string _packageName;
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private readonly string _mainURL;
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private readonly string _fallbackURL;
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private readonly bool _appendTimeTicks;
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private readonly int _timeout;
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private UnityWebTextRequestOperation _webTextRequestOp;
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private int _requestCount = 0;
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private ESteps _steps = ESteps.None;
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/// <summary>
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/// 查询的远端版本信息
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/// </summary>
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internal string PackageVersion { set; get; }
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internal DefaultGetRemotePackageVersionOperation(string packageName, string mainURL, string fallbackURL, bool appendTimeTicks, int timeout)
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{
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_packageName = packageName;
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_mainURL = mainURL;
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_fallbackURL = fallbackURL;
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_appendTimeTicks = appendTimeTicks;
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_timeout = timeout;
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}
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internal override void InternalOnStart()
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{
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_requestCount = WebRequestCounter.GetRequestFailedCount(_packageName, nameof(DefaultGetRemotePackageVersionOperation));
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_steps = ESteps.RequestPackageVersion;
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}
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internal override void InternalOnUpdate()
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{
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if (_steps == ESteps.None || _steps == ESteps.Done)
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return;
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if (_steps == ESteps.RequestPackageVersion)
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{
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if (_webTextRequestOp == null)
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{
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string url = GetPackageVersionRequestURL();
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YooLogger.Log($"Beginning to request package version : {url}");
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_webTextRequestOp = new UnityWebTextRequestOperation(url, _timeout);
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OperationSystem.StartOperation(_packageName, _webTextRequestOp);
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}
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Progress = _webTextRequestOp.Progress;
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if (_webTextRequestOp.IsDone == false)
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return;
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if (_webTextRequestOp.Status != EOperationStatus.Succeed)
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = _webTextRequestOp.Error;
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WebRequestCounter.RecordRequestFailed(_packageName, nameof(DefaultGetRemotePackageVersionOperation));
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}
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else
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{
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PackageVersion = _webTextRequestOp.Result;
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if (string.IsNullOrEmpty(PackageVersion))
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Failed;
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Error = $"Remote package version file content is empty !";
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}
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else
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{
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_steps = ESteps.Done;
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Status = EOperationStatus.Succeed;
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}
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}
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}
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}
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private string GetPackageVersionRequestURL()
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{
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string url;
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// 轮流返回请求地址
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if (_requestCount % 2 == 0)
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url = _mainURL;
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else
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url = _fallbackURL;
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// 在URL末尾添加时间戳
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if (_appendTimeTicks)
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return $"{url}?{System.DateTime.UtcNow.Ticks}";
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else
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return url;
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}
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}
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} |