Before I published the website I've been working on to Azure, I kept all the images inside a local "Catalog" folder which was referenced in the program like;
image src='/Catalog/Images/Thumbs/<%#:Item.ImagePath%
Now it is deployed on Azure, I believe I need to turn to something called "Unstructured Blob Storage" to store and retrieve the images on the website.
This is my first time using Azure, I am wondering if it is as easy as storing the images in an unstructured blob storage on Azure, then just changing the "Catalog/Images/Thumbs" to the file path on Azure.
Does anybody know exactly how this works?
Thanks!
AFAIK, after deployed your web application to Azure, you could still store your resources (e.g. image, doc, excel, etc.) within your web application. In order to better manage your resources and reduce the pressure for your application when serving the static resources, you could store your resources in a central data store.
This is my first time using Azure, I am wondering if it is as easy as storing the images in an unstructured blob storage on Azure, then just changing the "Catalog/Images/Thumbs" to the file path on Azure.
Based on your requirement, you could create a blob container named catalog and upload your images to the virtual directory Images/Thumbs, and set anonymous read access to your container and blobs. For a simple way, you could leverage Azure Storage Explorer to upload your images and set access level for your container as follows:
And you image would look like this:
<img src="https://brucchstorage.blob.core.windows.net/catalog/Images/Thumbs/lake.jpeg">
Moreover, you could leverage AzCopy to copy data to Azure Blob storage using simple commands with optimal performance. Additionally, you could leverage Azure Storage client library to manage your storage resources, details you could follow here.
Related
The first web app is the website and the other one is control panel .So from control panel admin upload image that must be shown in the website.
the two webapp are in the under same resource.
Look into storing the image as a Blob in Blob Storage. A storage account can be access from multiple applications.
There are several reasons you don't want to (and cannot) store it under the web app. One of them being that ...
Temporary files are not shared among site instances. Also, you cannot rely on them staying there. For instance, if you restart a web app, you'll find that all of these folders get reset to their original state.
Source: Understanding the Azure App Service file system - Temporary files
I am using Azure App Service with Azure SQL Database to host an ASP.NET Core Web Application.
This application involves uploading documents to a directory. On my local dev machine I am simply using:
var fileUploadDir = $"C:\\FileUploads";
On Azure what feature would I use to create a directory structure and place files in the directory structure using:
var filePath = Path.Combine(fileUploadDir, formFile.FileName);
using (var stream = new FileStream(filePath, FileMode.Create))
{
await formFile.CopyToAsync(stream);
}
What Azure feature would I use and is there an API for file system actions or can I simply update the fileUploadDir that my existing code uses with an Azure directory path?
With an Azure App Service you can upload your file the same way. You just have to create your directory in the wwwroot folder. If you got multiple instances, this folder will be shared between them as stated in the documentation File access across multiple instances
:
File access across multiple instances The home directory contains an
app's content, and application code can write to it. If an app runs on
multiple instances, the home directory is shared among all instances
so that all instances see the same directory. So, for example, if an
app saves uploaded files to the home directory, those files are
immediately available to all instances.
Nevertheless, depending on the need of your application, a better solution could be to use a blob storage to manage your files especially if they must persist. The use of blobs can also be useful if you want to trigger async treatments with azure function after the upload for instance.
For short duration process with temporary files I used the home directory without any issue. As soon as the processing can be long, or if I want to keep the files, I tend to use asynchronous processing and the blob storage.
The blob storage solves the problems of access to the files in the home directory by users, allows to rely on a service dedicated to the storage and not a simple storage of type file system related to app service. Writing, deleting is simple and provides many other possibilities: direct access via REST service, access via shared access signature, async processing ...
I thought that this would be very easy job to do, but as I have researched, I found nothing on how to rename a file or directory in Azure Storage.
I don't want to do a copy/delete (the size of files/directories is very large), I just want to change the name of a given file/directory programmatically through C#.
Edit: I'm talking about CloudFile/CloudFileDirectory objects.
Can someone help me?
You talk about Azure Files. Similar to Azure Blob Storage, there is no rename / move feature thus you have to copy the file (e. g. using StartCopyAsync) and then delete it using the CloudFile.DeleteAsync method.
I wrote a blog article about how to Rename Azure Storage Blob using PowerShell (same probably applies to Azure Files)
A straightforward solution through the SDK won't work. The renaming functionality isn't supported on the REST API, so all the wrappers (Azure CLI, SDK, etc.) don't have it. The Azure Storage Explorer tool can "rename" but under the hood it clones folders/files rather than renaming (again, it's working via API)
The Wailing Wall on the Azure Feedback portal is here, please upvote:
Rename blobs without needing to copy them
Rename, copy, move blob file from azure portal
FileShare mapping
Though, if you have some flexibility, you can mount an Azure File Share with SMB on Windows, Linux, or macOS. It does true renaming over SM. And for your app it would be just normal disk I/O operations.
If you want to rename an Azure blob folder manually you can download the Azure Storage Explorer tool given below, connect to your blob storage and you can rename the blob folders, you can clone the blob files also.
Azure storage explorer tool
I need an advise about Azure services.
Suppose that I have a Linux VM in Azure with some application working there. This application generates some log files. I'm interesting in uploading these log files to a directory in Azure Storage. What is the best way to do it?. How about security?, would I do it without creating a public directory?.
there are several ways to deal with this use case. I'll give you the simplest one. Under your storage account, create a file share, through Files, once you do, there will be an option to connect on top left, this will provide you with the specific commands to run on your vm in order to attach this file share. once this is done, point out the log files to be stored to that drive. From a security standpoint, you will be using unique keys to access that specific file share to protect access to it.
Step by step guide can be found here: https://learn.microsoft.com/en-us/azure/storage/files/storage-how-to-create-file-share
We have a multi-tenant system consisting of an Azure Web Role, Worker Role and Desktop/Mobile apps. Each client app allows uploading images that get routed to a tenant-specific Azure Blob Storage account.
The Azure Worker Role polls these files and processes them. We use third-party SDKs for processing that require either a file system path or a stream. Providing a stream directly from blob storage is trivial but the SDK also expects to spit out physical metadata files that our app consumes.
This is a problem since the SDK is a black box and does not provide an alternative. Is there a way to have local storage within worker roles for transient files. This storage is only required for a few seconds per worker role iteration and may be recycled/discarded if the role is recycled or shut down. In addition, the files are rather large (500MB+) so blob latency is not desired.
Searching around revealed some hacky workarounds, the best of which appears to be something that wraps blob storage to let our role access it as a file system.
Is there a way to simply have access to a file system similar to Web Role App_Data folders?
You can use RoleEnvironment.GetLocalResource() from within an Azure Worker Role to get a named handle to local file storage:
RoleEnvironment.GetLocalResource()
This will avoid hardcoding of specific file paths that may change over time, etc.
Good luck!