I am using the Java jclouds API for access to my Rackspace cloud files account.
I can create and list containers, and upload objects, but I can't figure out how to get the public links for an uploaded object. (I can see these public links from within the Rackspace control panel, by right-clicking on the object - there are 4 types: HTTP, HTTPS, Streaming, iOS Streaming).
The closest I can get is by using object.getInfo() to get the object's metadata. This includes a URI, but this doesn't resemble the public links I find from within the control panel.
Anyone know what I'm doing wrong?
I figured it out...
First, I should get the public URI of the object's container, not from the object.
Then I use a CloudFilesClient object. On the container I need to use getCDNMetadata("containername").getCDNUri()
Here is more information and some sample code to get the specific file CDN address.
For more details you can checkout the Java guide:
https://developer.rackspace.com/docs/cloud-files/quickstart/?lang=java
First get the cloud files api:
CloudFilesApi cloudFilesApi = ContextBuilder.newBuilder("rackspace-cloudfiles-us")
.credentials("{username}", "{apiKey}")
.buildApi(CloudFilesApi.class);
From there you can query the container:
CDNApi cdnApi = cloudFilesApi.getCDNApi("{region}");
CDNContainer cdnContainer = cdnApi.get("{containerName}");
Now with that CDNContainer you can get the specific web address that you need:
URI httpURI = cdnContainer.getUri();
URI httpsURI = cdnContainer.getSslUri();
This will get you the base URI for the container. Now to get the final address for your specific file you will need to append /{"your_file_name.extension"} to the end of the address. For example if my base URI was converted to a URL then to a String it may look like:
http://123456asdf-qwert987653.rackcdn.com/
From here I can get a file with the name example.mp4 with the following address:
http://123456asdf-qwert987653.rackcdn.com/example.mp4
This all assumes that you have already enabled CDN on the container.
Related
I have deployed an ASP.NET CORE web API project on Azure app services. I have copied a file using an FTP client to /site/wwwroot. Now let suppose file name is xyz.jpg, so it should be accessible with link somename.azurewebsites.net/xyz.jpg but ITS NOT. I have tried pasting the file in other folders to but nothing works.
I also have a controller for uploading pictures. It's also working fine. It uploads the picture in desired folder, i can see the picture via FTP client but still the picture is not accessible via any link. What am I doing wrong here ?
For a Web API application, you have to define the request and response yourself in the controller, or your link can't be recognized by the application.
For example, you can add the method to your controller. It works on my side.
[Route("myroute/{pic}")]
public IActionResult Get(string pic)
{
Byte[] b = System.IO.File.ReadAllBytes("image/"+pic);
return File(b, "image/jpeg");
}
In my code, pictures are stored in the folder called image in the root directory, and I define a route called myroute.
Here's my link to access the picture.https://myappname.azurewebsites.net/myroute/mypicname.jpg
Hope it helps.
`webClient.UploadFile("http://www.myurl.com/~/media/DCF92BB74CDA4D558EEF2D3C30216E30.ashx", #"E:\filesImage\Item.png");
I'm trying to upload images to sitecore using webclient.uploadfile() method by sending my sitecore address and the path of my local images.But I'm not able to upload it.I have to do this without any API's and Sitecore Instances.
The upload process would be the same as with any ASP.net application. However, once the file has been uploaded you need to create a media item programtically. You can do this from an actual file in the file system, or from a memory stream.
The process involves using a MediaCreator object and using its CreateFromFile method.
This blog post outlines the whole process:
Adding a file to the Sitecore Media Library programatically
If you're thinking simply about optimizing your developer workflow you could use the Sitecore PowerShell Extensions using the Remoting API as described in this this blog post
If you want to use web service way than you can use number of ways which are as follows:
a) Sitecore Rocks WebService (If you are allowed to install that or it is already available).
b) Sitecore Razl Service(It is third party which need license).
c) Sitecore Powershell Remoting (This needs Sitecore PowerShell extensions to be installed on Sitecore Server).
d) You can also use Sitecore Service which you can find under sitecore\shell\WebService\Service.asmx (But this is legacy of new SitecoreItemWebAPI)
e) Last is my enhanced SitecoreItemWebAPI (This also need SitecoreItemWebApi 1.2 as a pre-requisite).
But in end except option d you need to install some or other thing in order to upload the image using HTTP, you should also know the valid credentials to use any of above stated methods.
If your customers upload the image on the website, you need to create the item in your master database. (needs access and write right on the master database) depend on your security you might consider not build it with custom code.
But using the Sitecore webforms for marketers module With out of the box file upload. Create a form with upload field and using the WFFM webservices.
If you dont want to use Sitecore API, then you can do the following:
Write a code that uploads images into this folder : [root]/upload/
You might need to create folder structure that represent how the images are stored in Sitecore, eg: your images uploaded into [root]/upload/Import/ will be stored in /sitecore/media library/Import
Sitecore will automatically upload these images into Media library
Hope this helps
Option: You can use Item Web API for it. No reference to any Sitecore dll is needed. You will only need access to the host and be able to enable the Item Web API.
References:
Upload the files using it: http://www.sitecoreinsight.com/how-create-media-items-using-sitecore-item-web-api/
Enable Item Web Api: http://sdn.sitecore.net/upload/sdn5/modules/sitecore%20item%20web%20api/sitecore_item_web_api_developer_guide_sc66-71-a4.pdf#search=%22item%22
I guess that is pretty much what you need, but as Jay S mentioned, if you put more details on your question helps on finding the best option to your particular case.
private void CreateImageIteminSitecore()
{
filePath = #"C:\Sitecore\Website\ImageTemp\Pic.jpg;
using (new SecurityDisabler())
{
Database masterDb = Sitecore.Configuration.Factory.GetDatabase("master");
Sitecore.Resources.Media.MediaCreatorOptions options = new Sitecore.Resources.Media.MediaCreatorOptions();
options.FileBased = true;
options.AlternateText = Path.GetFileNameWithoutExtension(filePath);
options.Destination = "/sitecore/media library/Downloads/";
options.Database = masterDb;
options.Versioned = false; // Do not make a versioned template
options.KeepExisting = false;
Sitecore.Data.Items.MediaItem mediaitemImage = new Sitecore.Resources.Media.MediaCreator().CreateFromFile(filePath, options);
Item ImageItem = masterDb.GetItem(mediaitemImage.ID.ToString());
ImageItem.Editing.BeginEdit();
ImageItem.Name = Path.GetFileNameWithoutExtension(filePath);
ImageItem.Editing.EndEdit();
}
}
I've created a file system abstraction, where I store files with a relative path, e.g /uploads/images/img1.jpg.
These can then be saved both on local file system (relative to folder), or Azure. Then, I can also ask a method to give me the url to access that relative path.
In Azure, currently this is being done similar to the below:
public string GetWebPathForRelativePathOnUserContentStorage(string relativeFileFullPath)
{
var container = getCloudBlobContainer();
CloudBlockBlob blob = container.GetBlockBlobReference(relativeFileFullPath);
return blob.Uri.ToString();
}
On a normal website, there might be say 40 images in one page - So this get's called like 40 times. Is this first of all slow? I've noticed there is a particular pattern in the generated URL:
https://[storageAccountName].blob.core.windows.net/[container_name]/[relative_path]
Can I safely generate that URL without using the Azure storage API?
On a normal website, there might be say 40 images in one page - So
this get's called like 40 times. Is this first of all slow?
Not at all. The code you wrote above does not make any calls to storage. It just creates an instance of CloudBlockBlob object. If you were using GetBlockBlobReferenceFromServer method, then it would have been a different story because that method makes a call to storage.
`I've noticed there is a particular pattern in the generated URL:
_https://[storageAccountName].blob.core.windows.net/[container_name]/[relative_path]
Can I safely generate that URL without using the Azure storage API?
Absolutely yes. Assuming you're using just standard stuff that would be perfectly fine. Non standard stuff would include things like using a custom domain for your blob storage or connecting to geo-secondary location of your storage account.
I modified sample CloudRecog code for my own code. I created cloud database and get AccessKeys then copied this keys to CloudReco.cpp file. What should i use for metadata. I didn't understand this. Then when i was reading sample code i saw this line: private static final String mServerURL = "https://ar.qualcomm.at/samples/cloudreco/json/". How to get my metaData url?
The Vuforia Cloud Recognition Service enables new types of applications in retail and publishing. An application using Cloud Recognition will be able to query a Cloud Database with camera images (actual recognition happens in the cloud), and then handle the matching results returned from the cloud to perform local detection and tracking.
Also, every Cloud Image Target can optionally have an associated Metadata; a target metadata is essentially nothing else than a custom user-defined blob of data that can be associated to a target and filled with custom information, as long as the data size does not exeed the allowed limits (up to 1MB per target).
Therefore, you can use the metadata as a way to store additional content that relates to a specific target, that your application will be able to process using some custom logic.
For example, your application may use the metadata to store:
a simple text message that you want your app to display on the screen of your device when the target is detected, for example:
“Hello, I am your cloud image target XYZ, you have detected me :-) !”
a simple URL string (for instance “http://my_server/my_3d_models/my_model_01.obj”) pointing to a custom network location where you have stored some other content, like a 3D model, a video, an image, or any other custom data, so that for each different image target, your application may use such URL to download the specific content;
more in general, some custom string that your application is able to process and use to perform specific actions
a full 3D model (not just the URL pointing to a model on a server, but the model itself), for example the metadata itself could embed an .OBJ 3D model, provided that the size does not exceed the allowed limits (up to 1MB)
and more ...
How do I create/store metadata for a Cloud target ?
Metadata can be uploaded together with an image target at the time you create the target itself in your Cloud Database; or you can also update the metadata of an existing target, at a later time; in either case, you can use the online TargetManager, as explained here:
https://developer.vuforia.com/resources/dev-guide/managing-targets-cloud-database-using-target-manager
or you can proceed programmatically using the VWS API, as explained here:
https://developer.vuforia.com/resources/dev-guide/managing-targets-cloud-database-using-developer-api
How can I get the metadata of a Cloud target when it is recognized ?
The Vuforia SDK offers a dedicated API to retrieve the metadata of a target in your mobile application. When a Cloud target is detected (recognized), a new TargetSearchResult is reported to the application, and the metadata can be obtained using one of these methods:
Vuforia Native SDK - C++ API: TargetSearchResult::getMetaData() - const char*
Vuforia Native SDK - Java API: TargetSearchResult.getMetaData() - String
Vuforia Unity Extension - C# API: TargetSearchResult.Metadata - string
See also the API reference pages:
https://developer.vuforia.com/resources/api/classcom_1_1qualcomm_1_1vuforia_1_1_target_search_result
https://developer.vuforia.com/resources/api/unity/struct_target_finder_1_1_target_search_result
Sample code:
For a reference sample code in native Android, see the code in the Books.java in the "Books-2-x-y" sample project.
For a reference sample code in native iOS, see the code in the BooksEAGLView.mm file in the "Books-2-x-y" sample project.
For a reference sample code in Unity, see the CloudRecoEventHandler.cs script (attached to theCloudRecognition prefab) in the Books sample; in particular, the OnNewSearchResult method shows how to get a targetSearchResult object (from which you can then get the metadata, as shown in the example code).
EDIT: this is in response to the first part of your question,: "What should i use for metadata" (not the second part about how to find the URL)
Based on their documentation (https://developer.vuforia.com/resources/dev-guide/cloud-targets):
The metadata is passed to the application whenever the Cloud Reco
target is recognized. It is up to the developer to determine the
content of this metadata – Vuforia treats it as a blob and just passes
it along to the application. The maximum size of the uploadable
metadata is 150kByte.
I added some debugging in their CloudRecognition app and saw that the payload (presumably the meta-data) they return when "recognizing" an image is:
{
"thumburl": "https://developer.vuforia.com/samples/cloudreco/thumbs/01_thumbnail.png",
"author": "Karina Borland",
"your price": "43.15",
"title": "Cloud Recognition in Vuforia",
"average rating": "4",
"# of ratings": "41",
"targetid": "a47d2ea6b762459bb0aed1ae9dbbe405",
"bookurl": "https://developer.vuforia.com/samples/cloudreco/book1.php",
"list price": "43.99"
}
The MetaData, uploaded along with your image-target in the CloudReco database, is a .txt-file, containing whatever you want.
What pherris linked, as payload from the sample-application, is in fact the contents of a .json-file that the given image-target's metadata links to.
In the sample application, the structure is as follows:
The application activates the camera and recognizes an image-target
The application then requests that specific image-target's metadata
In this case, the metadata in question is a .txt-file with the following content:
http://www.link-to-a-specific-json-file.com/randomname.json
The application then requests the contents of that specific .json-file
The specific .json-file looks as the copy-pasted text-data that pherris linked
The application uses the text-data from the .json-file to fill out the actual content of the sample application
I am looking to serve an image from my root path test.com/some.png but this markdown page may be displayed on [Post]test.com/Item or [Put]test.com/Item/123 So I am looking for a way to get the base URI to form the image link.
You can use the literal text ~/ inside a Markdown page gets converted to a virtual path.
This literal is registered on start-up from the global EndpointHostConfig.MarkdownReplaceTokens property which is assigned the appHost.Config.WebHostUrl property:
this.MarkdownReplaceTokens["~/"] = appHost.Config.WebHostUrl.WithTrailingSlash();
Since it's difficult for an ASP.NET framework to determine the url its hosted at (i.e. without a request) you need to specify the preferred url you wan to use in your config. Here's an example from the servicestack.net/docs/ - ServiceStack's markdown Docs project:
SetConfig(new EndpointHostConfig {
WebHostUrl = baseUrl, //replaces ~/ with Url
MarkdownBaseType = typeof(CustomMarkdownPage),
});
Otherwise inside your service you can use base.Request or base.RequestContext.Get<IHttpRequest>() to get information about the incoming Request as well as (HttpRequest)base.Request.OriginalRequest to get the underlying ASP.NET Request object.