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  • Andrew Hawken 57 posts 114 karma points c-trib
    Sep 14, 2015 @ 18:56
    Andrew Hawken
    1

    How to get bytes of media and mimtype in Umbraco 7 backoffice

    I'm hooking into ContentServicePublished and I need to get at the actual media of a node - expressly to get the MimeType and read the bytes from disk/http to create a CouchDb Attachment).

    I can get 'close' with

    var media  = ApplicationContext.Current.Services.MediaService.GetById(mediaid);
    //or
    
    var media2 =  helper.Media(mediaid);
    //where helper is an  Umbraco.Web.UmbracoHelper 
    

    but this just gets me a Media object with bunch of properties - I can see the url

    ms.Properties["umbracoFile"]
    

    but that looks like a URL rather than I file. I guess I can cludge something together to read it from the filesystem by pretending its a path relative to AppDomain.CurrentDomain.BaseDirectory but that feels like a terrible mistake, especially if its configured to store it on Azure or Amazon!

    I could read the URL with webclient, but I don't know how to get the current hostname?

    I feel I'm missing something obvious: time to ask!

  • jivan thapa 194 posts 660 karma points
    Sep 14, 2015 @ 19:39
    jivan thapa
    0

    This may help you, try to look at /Settings/Media Types/Image and see the Generic properties.

    You can use alias "umbracoExtension" and "umbracoBytes".

    enter image description here

  • Andrew Hawken 57 posts 114 karma points c-trib
    Sep 14, 2015 @ 20:15
    Andrew Hawken
    0

    That's not quite helping. the umbracoBytes contains the length and umbracoFile gets me the filename (path in fact) and umbracoExtension gets the file extension (so I can use that to product a Mime Type) but I want to read the file itself. What is the best way to read the content of the file into memory, given all I have is a relative path?

    i.e. is there a public class/method that is used by the umbraco backend that is aware of things like UmbracoFileSystemProviders in order to get the file itself (whether it is stored locally or via https://github.com/JimBobSquarePants/UmbracoFileSystemProviders.Azure for instance.)

  • Andrew Hawken 57 posts 114 karma points c-trib
    Sep 14, 2015 @ 22:14
    Andrew Hawken
    0

    Having spent the evening reading some Umbraco source code, I think what I need is IFileSystem. There are probably enough clues in the Umbraco.Web.Editors.ImagesController to see what I need to do.

  • Andrew Hawken 57 posts 114 karma points c-trib
    Feb 05, 2017 @ 17:38
    Andrew Hawken
    2

    As (16 months later) I was looking for this (again) here the the answer I came up with ...

       public class SheetIOMediaReader
    {
        public byte[] Read(IMedia med)
        {
            if (med != null)
            {
                var mediaFileSystem = FileSystemProviderManager.Current.GetFileSystemProvider<MediaFileSystem>();
                var imagePath = med.Properties["umbracoFile"].Value.ToString();
                var fullOrgPath = mediaFileSystem.GetFullPath(mediaFileSystem.GetRelativePath(imagePath));
                if (!mediaFileSystem.FileExists(fullOrgPath))
                {
                    return null;
                }
                byte[] res = null;
    
                using (var fileStream = mediaFileSystem.OpenFile(fullOrgPath))
                {
                    if (fileStream.CanSeek) fileStream.Seek(0, 0);
                    byte[] buffer = new byte[16*1024];
                    using (MemoryStream ms = new MemoryStream())
                    {
                        int read;
                        while ((read = fileStream.Read(buffer, 0, buffer.Length)) > 0)
                        {
                            ms.Write(buffer, 0, read);
                        }
                        res = ms.ToArray();
                    }
    
                }
                return res;
    
            }
            return null;
        }
    }
    
  • James Lau 37 posts 58 karma points
    Mar 27, 2018 @ 06:58
    James Lau
    0

    Hi,

    I am using Umbraco 7.5.13. The IMedia "umbracoFile" property value returned is a JSON string. It must be parsed.

                dynamic jsonValue = JObject.Parse(imagePath);
                string propertyValue = jsonValue.src.Value;
    
                var relativePath = mediaFileSystem.GetRelativePath(propertyValue);
                var fullOrgPath = mediaFileSystem.GetFullPath(relativePath);
    
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