I have a project (a version of which has already been deployed) in the App Engine Launcher, and I would like to change the project directory, as I have since moved the project files to a new directory. But, when I click to edit the project, the option to browse to a different directory is disabled.
I am using App Engine SDK 1.5.4 on Windows XP. Thanks in advance for your help.
It looks like this is a known issue (here), but the poster says s/he is running Ubuntu, not Windows.
You can always delete (Ctrl+Del) and add the application again its not a lot of trouble.
Related
We're making a new application using WPF .Net Core. To use the auto update function we decided to pack it with the MSIX Packaging Tool as a UWP App in VS2019. I was able to host the appinstaller File on an IIS and to Install the App over a link to that file over the web. Auto updating is also working fine.
Now to the problem:
When I run the installed App it's icon is not showing in the task bar but it is shown in the Task-Manager using a lot of cpu. In the Process Monitor it shows that the App tries to access its dependencies (like PresentationFramework.dll) but is not successful as the result is always "File locked with only readers". The DLL itself is present in the WindowsApps/xxx/ Path. Also I can not start the EXE manually as my user do not have the rights. What am I missing here?
Edit: Also I realized now that my app is only starting as a background process in the task manager and not as an app. When I go to the app directory under WindowsApps/xxx/MyApp I can not start the EXE directly because of no rights as mentioned before. But when I copy the whole folder I can start the EXE, the GUI appears and the app is an app again in the task manager.
We found an answer. As the GUI is a WPF .Net Core Project and we make the setup with a Windows Application Packaging Project to generate a UWP App from it the technology used seems to be the so called Desktop Bridge.
In the process monitor it seems that it tries to access the files under the correct path but somehow it does it not in the right way as long as the application path is not set correctly in the WPF Projects App.xaml.cs.
To fix this use the solution from Andrew Leader
I am new at Google Cloud and I would like to know if there is a way to edit only one file inside of an App Engine application.
This is my problem:
I am migrating from a normal hosting to google cloud and I am having some problems with my PHP code, I am using the same version like locally but I am getting some error in the cloud, so I need to change 1 or 2 files, update them and test the app, so is there any way to change that file directly on the server? To deploy i am using this command:
gcloud app deploy
But it takes about 10 minutes to deploy so is too slow my testing. Any suggestions?
Thanks.
Leandro
For the standard environment the answer is no, you need to deploy a new version of the app to modify a file. So the advice would be - make the most of testing your app locally. See somehow related Google AppEngine - updating my webapp after deploy
For the flexible environment (possibly your case as you mentioned 10 min deployment time, typical for the flexible env) there might be stuff to try, but tedious, see Google AppEngine - updating my webapp after deploy
There is a way to edit directly into the instance.
ssh into your instance and then start shell on your running docker as guided in this url. https://cloud.google.com/appengine/docs/flexible/python/debugging-an-instance
After login you can see your php source files.
Basically you will not have any editor. So do
$> apt update
$> apt install nano
$> nano index.php // edit your files
you can see something like
There is no way to change 1-2 files on the server so that it would update the app. Deployment is the process of updating the live app. If you want some changes to be made to the app that is already deployed, you will have to redeploy - there is no way around it. This is why it is recommended to test the app locally before (re)deploying so that you are sure everything is working fine.
If locally everything works fine and issues start happening only when the app is deployed, this should be investigated further and I would advise you to open a new question and provide as much details as possible regarding the problems, including full stack trace of the error, related code parts, your app.yaml contents as well.
So it seems from a few SO questions I've seen that this is a problem among other users. Recently one of our head dev's left and I inherited a lot of his projects. One of which, is a website that what seems like lives on an app engine from google cloud platforms. From the App Engine documentation, to download source code you use the appcfg.py download_app command. Which I did, however the only results I get back from that call is:
Fetching file list...
Fetching files...
And then it just ends. No error message or any kind of message at all, and of course, it did not download the source code into the output dir I specified.
Scratching my head and looking at various SO posts, someone mentioned something about going into the google cloud vm directly and doing the same command, and to my surprise finding the same exact behavior that I did in my local terminal.
This made me realize it must be something else at play. I took a look at my versions tab in the App Engine dashboard on GCP. I see my instance running, it correctly says Serving and if I click the link it brings me to the website which loads fine. However, under Size it says 0 B which made me think perhaps this is why the download_app isn't downloading anything, because the version is 0 B?
What I'm trying to figure out is why it says 0 B for the version, when clearly the site runs fine and how I can get the source code for this. Here's a screenshot for reference
And screenshot of my terminal (local). Obviously I omitted the -A and -V flags, but they are correctly set and if I purposely make them incorrect I do indeed get an error message.
EDIT
Just so everyone is aware, I also made sure my user had the correct permissions. Owner, App Engine Owner... and some others. I don't think that's the problem.
When you deploy an App Engine Flexible application, the source code is uploaded to Cloud Storage on your project in a bucket named staging.<project-id>.appspot.com. You can navigate in this bucket and download the source code for a specific version as a .tar file.
Alternatively, you can find the exact Cloud Storage URL for your source code by going to Dev Console > Container Registry > Build History and select the build for your version. You'll find the link to your source code under Build Information.
One thing to note however is that the staging... bucket is created by default with a Lifecycle rule that deletes files older than 15 days automatically. You can delete this rule if you want so that all versions' source code is kept indefinitely.
In your case I believe that may not have helped since files may have been deleted already but it's worth knowing you can get the source code from there (source code isn't pushed to Source Repository by default, your developer had to configure it manually).
Posting this since none of the listed methods on the web didn't take me to the code (by June 2021)
Note: appcfg.py is deprecated by Google
You could try accessing your source code through;
Google Cloud Platform > Debugger > choosing the version of the
Application from combo at top.
This will list the files of that version on the left pane. There is no way to download code automatically but you can copy-paste the code.
Advice: Push your code to a Git repository to avoid this hassle next time.
Hope you will find this helpful.
In the developer console you can select the respective project and check:
on the Services page - which services, AKA modules - as they used to be (and still are) called in various places, you app has deployed
on the Versions page - which versions for each of the services are deployed
This information is what appcfg.py download_app expects. See also:
the various appcfg.py options using its --help flag
How do I download a specific service's source code off of AppEngine?
You can also access the deployed source code live (if everything else fails it could still be a last resort method to get the code, but tedious), see my answer to Google Cloud DataStore automatic indexing
Update:
I just now noticed in your screenshot that it's a flexible environment app. The appcfg.py docs are in the standard environment section, I suspect it's not applicable to the flexible environment, for which what's deployed is actually a docker image built during the deployment operation. From Deploying your application:
Deploy your app to App Engine using the gcloud app deploy
command. This command automatically builds a container image by using
the Container Builder service and then deploys that image to the
App Engine flexible environment. The container will include any local
modifications that you've made to the runtime image.
It might be possible to access the code on the actual GCE instance running the app, by connecting to the running instance and starting a shell in your app container, see Connecting to the instance
In my Google App Engine project, I'm currently using Twig for accessing the Datastore (but I suspect my question would be relevant for other 3rd party libs like SimpleDS, Objectify, etc.).
I was thinking that I should be able to delete some or all of the following JARs from my WEB-INF/lib folder:
datanucleus-appengine-[...].jar
datanucleus-core-[...].jar
datanucleus-jpa-[...].jar
geronimo-jpa_[...].jar
geronimo-jta_[...].jar
jdo2-api-[...].jar
But when I do, I get errors from Eclipse complaining that "The App Engine SDK JAR is missing in the WEB-INF/lib directory".
Is it really necessary to retain all these (unused) JARs?
If you're using the Google Plugin for Eclipse you can delete these JARs and then open the Properties for your Google Web Application project and open the Google > App Engine and then uncheck the Use datanucleus JDO/JPA to access the datastore. In fact, unchecking this box actually deletes these JARs for you.
I don't think you can delete them from the project (as you have said, eclipse starts to complain), but I've heard you don't have to upload them to your app, as long as you upload from the command line. This has the advantage that at startup your app won't have to load them up.
There are some details of uploading to app engine via the command line here and confirmation that you can do this here
If you manage to do this I would appreciate it it if you post links to the instructions you followed or post what you needed to do, as I have this on my todo list as well, but only got as far as seeing if it was possible. Thanks!
Can I download source code of already deployed app if I've lost it's source code on my hard drive? I've looked through application dashboard but couldn't find any option to check it out.
No, you can't, and there are no plans to offer such functionality. Sorry - consider investing in a VCS and backups next time.
SDK 1.4.0 has this sort of feature (Python only):
The developer who uploaded an app version can download that version's
code using the appcfg.py
download_app command. This feature can
be disabled on a per application
basis in the admin console, under the
'Permissions' tab. Once disabled,
code download for the application
CANNOT be re-enabled.