Ejemplo n.º 1
0
        private async Task SendResponse(ImageContext imageContext, string key, DateTimeOffset lastModified, byte[] buffer, int length)
        {
            imageContext.ComprehendRequestHeaders(lastModified, length);

            string contentType = FormatHelpers.GetContentType(this.options.Configuration, key);

            switch (imageContext.GetPreconditionState())
            {
            case ImageContext.PreconditionState.Unspecified:
            case ImageContext.PreconditionState.ShouldProcess:
                if (imageContext.IsHeadRequest())
                {
                    await imageContext.SendStatusAsync(ResponseConstants.Status200Ok, contentType);
                }

                this.logger.LogImageServed(imageContext.GetDisplayUrl(), key);
                if (buffer == null)
                {
                    // We're pulling the buffer from the cache. This should be pooled.
                    CachedBuffer cachedBuffer = await this.cache.GetAsync(key);

                    await imageContext.SendAsync(contentType, cachedBuffer.Buffer, cachedBuffer.Length);

                    BufferDataPool.Return(cachedBuffer.Buffer);
                }
                else
                {
                    await imageContext.SendAsync(contentType, buffer, length);
                }

                break;

            case ImageContext.PreconditionState.NotModified:
                this.logger.LogImageNotModified(imageContext.GetDisplayUrl());
                await imageContext.SendStatusAsync(ResponseConstants.Status304NotModified, contentType);

                break;

            case ImageContext.PreconditionState.PreconditionFailed:
                this.logger.LogImagePreconditionFailed(imageContext.GetDisplayUrl());
                await imageContext.SendStatusAsync(ResponseConstants.Status412PreconditionFailed, contentType);

                break;

            default:
                var exception = new NotImplementedException(imageContext.GetPreconditionState().ToString());
                Debug.Fail(exception.ToString());
                throw exception;
            }
        }
Ejemplo n.º 2
0
        private async Task SendResponse(ImageContext imageContext, string key, DateTimeOffset lastModified, Stream stream)
        {
            imageContext.ComprehendRequestHeaders(lastModified, stream.Length);

            string contentType = FormatHelpers.GetContentType(this.options.Configuration, key);

            switch (imageContext.GetPreconditionState())
            {
            case ImageContext.PreconditionState.Unspecified:
            case ImageContext.PreconditionState.ShouldProcess:
                if (imageContext.IsHeadRequest())
                {
                    await imageContext.SendStatusAsync(ResponseConstants.Status200Ok, contentType).ConfigureAwait(false);
                }

                this.logger.LogImageServed(imageContext.GetDisplayUrl(), key);
                await imageContext.SendAsync(contentType, stream).ConfigureAwait(false);

                break;

            case ImageContext.PreconditionState.NotModified:
                this.logger.LogImageNotModified(imageContext.GetDisplayUrl());
                await imageContext.SendStatusAsync(ResponseConstants.Status304NotModified, contentType).ConfigureAwait(false);

                break;

            case ImageContext.PreconditionState.PreconditionFailed:
                this.logger.LogImagePreconditionFailed(imageContext.GetDisplayUrl());
                await imageContext.SendStatusAsync(ResponseConstants.Status412PreconditionFailed, contentType).ConfigureAwait(false);

                break;

            default:
                var exception = new NotImplementedException(imageContext.GetPreconditionState().ToString());
                Debug.Fail(exception.ToString());
                throw exception;
            }
        }