Is it possible to pack a complete "web-app" (serving web-pages and providing REST API) into a single executable so that no other files need to be accessed and everything is servered from something like a "virtual filesystem" which is in memory only?

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster

On Sunday, 28 July 2019 at 13:45:50 UTC, Robert M. Münch wrote:
> Is it possible to pack a complete "web-app" (serving web-pages and providing REST API) into a single executable so that no other files need to be accessed and everything is servered from something like a "virtual filesystem" which is in memory only?

I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.

On Sunday, 28 July 2019 at 14:14:06 UTC, Sebastiaan Koppe wrote:
> On Sunday, 28 July 2019 at 13:45:50 UTC, Robert M. Münch wrote:
>> Is it possible to pack a complete "web-app" (serving web-pages and providing REST API) into a single executable so that no other files need to be accessed and everything is servered from something like a "virtual filesystem" which is in memory only?
>
> I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.

It works on anything since it just loads in the data (as text I think?) from the file. But you can just convert it to a buffer etc.

On 2019-07-28 14:14:06 +0000, Sebastiaan Koppe said:

> I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.

And this works than good together with the vibe framework? So, it's not requiring or forcing one to use files or databases?

-- 
Robert M. Münch
http://www.saphirion.com
smarter | better | faster

On 29/07/2019 2:42 AM, Robert M. Münch wrote:
> On 2019-07-28 14:14:06 +0000, Sebastiaan Koppe said:
> 
>> I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.
> 
> And this works than good together with the vibe framework? So, it's not requiring or forcing one to use files or databases?
> 

vibe.d uses this for their templates.

For a VFS you would need to have your own API (can be library) that you explicitly use.

On Sunday, 28 July 2019 at 14:42:48 UTC, Robert M. Münch wrote:
> On 2019-07-28 14:14:06 +0000, Sebastiaan Koppe said:
>
>> I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.
>
> And this works than good together with the vibe framework? So, it's not requiring or forcing one to use files or databases?

Haven't tested it, but something like this:

---
import vibe.core.core : runApplication;
import vibe.http.server;

void handleRequest(scope HTTPServerRequest req, scope HTTPServerResponse res)
{
	if (req.path == "/file.txt")
		res.writeBody(import("file.txt"), "text/plain");
}

void main()
{
	auto settings = new HTTPServerSettings;
	settings.port = 8080;
	settings.bindAddresses = ["::1", "127.0.0.1"];

	auto l = listenHTTP(settings, &handleRequest);
	scope (exit) l.stopListening();

	runApplication();
}
---

Of course you may want to use the router or the rest generator for this. See the examples in the repo.

On Sunday, 28 July 2019 at 18:54:37 UTC, Sebastiaan Koppe wrote:
> On Sunday, 28 July 2019 at 14:42:48 UTC, Robert M. Münch wrote:
>> On 2019-07-28 14:14:06 +0000, Sebastiaan Koppe said:
>>
>>> I am using https://dlang.org/spec/expression.html#import_expressions for text files. Don't know if it works on binary files as well.
>>
>> And this works than good together with the vibe framework? So, it's not requiring or forcing one to use files or databases?
>
> Haven't tested it, but something like this:
>
> ---
> import vibe.core.core : runApplication;
> import vibe.http.server;
>
> void handleRequest(scope HTTPServerRequest req, scope HTTPServerResponse res)
> {
> 	if (req.path == "/file.txt")
> 		res.writeBody(import("file.txt"), "text/plain");
> }
>
> void main()
> {
> 	auto settings = new HTTPServerSettings;
> 	settings.port = 8080;
> 	settings.bindAddresses = ["::1", "127.0.0.1"];
>
> 	auto l = listenHTTP(settings, &handleRequest);
> 	scope (exit) l.stopListening();
>
> 	runApplication();
> }
> ---
>
> Of course you may want to use the router or the rest generator for this. See the examples in the repo.

Doing it like that is kinda pointless though because you can just serve static files.

http://vibed.org/api/vibe.http.fileserver/serveStaticFiles