I'm using "github.com/dgrijalva/jwt-go" to create JSON web tokens.
When I hosted my server locally, I could use my private key as usual. But in GAE it won't work because I don't have access to the file system.
How would you guys do it? Store the key in datastore or any other ideas?
Thanks
Edit:
My app.yaml looks like this (below api_version and stuff):
handlers:
- url: /.*
script: _go_app
On AppEngine you don't have access to the file system of the host operating system, but you can access files of your web application (you have read-only permission, you can't change them and you can't create new files in the app's folder).
So the question is: do you want to change this private key from your application without redeploying your app? Or it is perfectly fine if it is deployed "statically" with your app's code?
If you don't need to change it (or only when you redeploy your app), easiest is to store it as a "static" file as part of your webapp. You may refer to files of your app using relative paths, where the current or working directory is your app's root. E.g. if your app contains a key folder in its root (where app.yaml resides), and there is a my_key.txt file inside the key folder, you can refer to it with the path: key/my_key.txt.
Actually it is quite common to "ship" static files with your app's code: just think of HTML templates which are read and processed by the Go code (e.g. package html/template) to produce HTML result; the content of the HTML template files are not served directly to clients.
If you need to change it from time to time without having to redeploy your app, then store it in the Datastore which your app can read and modify.
Note:
One important note: not every file is readable by code, this depends on the app configuration. Quoting from Configuring with app.yaml / Static file handlers:
Static files are files to be served directly to the user for a given URL, such as images, CSS stylesheets, or JavaScript source files. Static file handlers describe which files in the application directory are static files, and which URLs serve them.
For efficiency, App Engine stores and serves static files separately from application files. Static files are not available in the application's file system. If you have data files that need to be read by the application code, the data files must be application files, and must not be matched by a static file pattern.
Static file handlers can be defined in two ways: as a directory structure of static files that maps to a URL path, or as a pattern that maps URLs to specific files.
Read the link how to properly configure application and static files / directories.
The solution was to leave app.yaml as it were. Put app.yaml at root lvl in project. Then change all imports from starting at GOPATH to start at project root instead. The problem that made me choose to put app.yaml and main go file in a different folder under project root was because of double imports. Read this for a better understanding: Google Go AppEngine imports and conflicts when serving / testing
The solution made my project find the files I wanted.
Related
I have written an application in CakePHP 3.x and there is a form to upload files.
At present, files are being uploaded to WWW_ROOT.'files' which is /app/webroot/files/ path.
To store files separately from core application, I created a subdomain cdn.example.com whose path is like /home/user/example.com/cdn.example.com/.
since, uploading files requires absolute path, how can I get absolute path of the subdomain cdn.example.com same as $_SERVER['DOCUMENT_ROOT']; from example.com?
First check if your server allow to write files from main domain to subdomain.
You can't get the absolute path of a different domain of the one you deployed your application, you should store the path in a variable or in constant.
If you really need to store files in another domain/subdomain and any path is blocked you should consider to reupload the files via FTP script.
I have configured a bucket and to access the files uploaded here what should be the Yaml handler statement?
For example: http://commondatastorage.googleapis.com/yii2assets/e896c38e/css/bootstrap.css
When I browse this CSS file it prompts to download and looks it doesn’t understand the MIME type.
I can’t provide a static directory since it’s hosted on Google Storage and to access I need to use the URL mentioned above.
Please let me if you have any IDEAS.
What I need is a handle like:
url: bootstrap.css
script : URL FROM where TO SERVER
Like if I have to use a JQuery CDN URL.
You can upload static file with your code then config Yaml with static_files please see in doc.
If you want to upload file to Google Storage you can access by sending parameter from python to html file. It depend how you implement it Java, Python have a difference way to implement this.
I found an article on using external config files here. While I was able to extract my config settings, I was unable to put them in a central location.
When i tried to do something like this:
<connectionStrings configSource="C:/dev/Configs/ConnectionStrings.config" />
It causes a type initializer exception. If i put the file in a folder under the bin directory, it's ok. Problem is, I want to keep the config files central to all apps so i can reuse it in a lot of places.
Is it just not doable?
I ended up using Symbolic Links. I created a subfolder under each app that symlinked back to the master config folder. All apps share the same Connection Strings now.
I dont want a config file only for cherrypy. I need it only for a very smallish webserver which wont be actually accesible to the world, so no need for me to mock around in config files.
Is there a way to pass a "config" to wsgiserver when starting it? I just need a 5-10 line script to fire of a threading web server, which can run a flask application and server static files.
Also, I dont want to specify full path to the static files, just ./static from where the script is ran.
According to Changing default url to static-media in Flask the only option is to map /static to something that serves from os.getcwd() + '/static'.
Or with CherryPy: How to use cherrypy as a web server for static files?
Is it possible to copy images into a static directory under my app engine project domain?
For example, when a user signs up for my app, I want them to supply an image for themselves, and I would copy it to a static directory but rename the image using their username, like:
www.mysite.com/imgs/username.jpg
www.mysite.com/imgs/john.jpg
www.mysite.com/imgs/jane.jpg
but I don't know where to start with this, since the JDO api doesn't really deal with this sort of thing (I think using JDO, they'd want me to store the image data as a blob associated with my User objects). Can I just upload the images to a static directory like this?
Thanks
No. App Engine has a provision for static files, but only static files you upload along with your code. If users can upload the data, it is not really "static" in the app engine context. Depending on how large a picture you want users to be able to upload, you will want to use either the regular datastore (for storing up to 1MB) or the Blobstore for bigger files (up to 2 gig)
I'm almost certain you need to use the blobstore for dynamic upload. Even if you need not, for reasons of session independence you probably want to. As blobstore operations are expensive relative to a static file, you could have a task queue move the (now static) images into static store.