**Problem**
WHen portfile is not found, sbtn will try to start the server
even when the desired command is shutdown.
**Solution**
When the command is just shutdown, don't start the server.
**Problem**
`run` task blocks the server, but during the run the server is just
waiting for the built program to finish.
**Solution**
This implements client-side run where the server creates a sandbox
environment, and sends the information to the client,
and the client forks a new JVM to perform the run.
**Problem**
The sbtn response handling code is relatively stragightforward,
but it's a bit messy.
**Solution**
This cleans it up a bit, similar to the style used by Unfiltered
back then (not sure how Unfiltered plans are written nowadays) by
expressing each event handling as a partial function, and composing them
together using `orElse`.
**Problem**
Calling -bsp with --sbt-launch-jar causes "Unrecognized option: --server".
This is because --server is passed in twice since $7775
**Solution**
Since the server invocation by BSP client already passes in --server,
we can remove the extra --server append.
In addition to ExecuteProgress, this new interface allows builds and plugins to receive events when commands start and finish, including the State before and after each command. It also makes cancellation visible to clients by making the Cancelled type top-level.
- remove unused type params
- use `withFilter` if possible
- use `collectFirst` instead of `collect` and `headOption`
- use `length` instead of `size` if `Array` or `String`
- use `foreach` instead of `map`
Problem
-------
There's a bug in ipcsocket cleanup logic that effectively
tries to wipe out /tmp.
Workaround
----------
We should fix the underlying bug, but we can start by
explicitly configuring the temp directories ipcsocket uses.
Ref https://github.com/sbt/sbt/issues/6931
The `XDG_RUNTIME_DIR` environment variable will be used to choose the base directory in which the sockets will be created by **sbt**. This can help when issues such as #6777 appear. There are other related issues, such as #6101, [Metals issue #2235](https://github.com/scalameta/metals/issues/2235), [Che issue #18394](https://github.com/eclipse/che/issues/18394). Those are closed issues, but there are some cases in which the solution does not work (such as the case in #6777). Furthermore, the solution given seems more like a workaround than an actual fix.
**What causes this issue?**
At least in my case, the **ServerAlreadyBootingException** is thrown after **sbt** tries to create a Unix domain socket and fails. In my specific environment, I was not able to create the sockets in some directories because they were mounted on an NFS. This prevented me from using any automated sbt command on any of those directories (Metals uses sbt under the hood, and it was not able to start because of the ServerAlreadyBootingException), which in turn resulted in me not being able to use Metals on a project that was created on any of those directories.
**How is the issue solved in this PR?**
If the `XDG_RUNTIME_DIR` environment variable is set, then sockets will be created in a folder with a hashed name, inside the directory `XDG_RUNTIME_DIR/.sbt/`. If this variable is not set, everything works exactly the same as always.
Let's see an example:
1. My environment variable `XDG_RUNTIME_DIR` is set to /home/alonso/.runtime-dir`
2. I create my project in `/home/alonso/workspace/hello-world`
3. I run `sbt compile`
4. The socket is created in `/home/alonso/.runtime-dir/.sbt/sbt-socket102030405060/sbt-load.sock`. The number **102030405060** is a hash that is computed from the base directory of the project (it is actually the same hash that is produced in order to create sockets in Windows) and it will be different depending on the location of the project
5. The sbt command executed correctly, which would not have happened if the socket had been created in the `home/alonso/workspace` directory or any of its subdirectories (in this example, `/home/BlackDiamond/workspace` corresponds to a network file share)
Co-authored-by: Alonso Montero <lumontero@mobilize.net>
In order to start the sbt server we must use the sbt script because
it is the only way to load the .sbtopts and the .jvmopts file properly.
To do so the sbt script can pass a -Dsbt.script prop to the java server.
It is used in the NetworkClient to start the server, and it is replicated
in the BuildServerConnection file (.bsp/sbt.json).
The problem was that -client was different from --client, which
makes for a confusing user experience. So, this change makes
them the same and re-names -client to --java-client. The value
of this is that hopefully -client and --client being the same
feels more logical to users.