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https://github.com/kiranandcode/ocamlot

An Activitypub server in OCaml!
https://github.com/kiranandcode/ocamlot

activitypub dream ocaml social-media social-network

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An Activitypub server in OCaml!

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README 

        
# OCamlot - An OCaml Activitypub Server



OCamlot is an activitypub server written in OCaml!



As with most non-mainstream activitypub servers, it's currently in very experimental status!



Features:



 - Creating posts

 - Replying to posts

 - Custom profiles

 - Liking posts (we call them `toasts`)

 - Reboosting posts (we call them `cheers`)

 - Replying to posts



Screenshot:



![screenshot.png](https://raw.githubusercontent.com/Gopiandcode/ocamlot/master/screenshot.png)



You can see a running instance of the server at [ocamlot.xyz](https://ocamlot.xyz)!



## Deploying OCamlot



The rest of this guide will be assuming that you have a server with

OCaml installed, and nginx, setup with letsencrypt, such that an

appropriate internal port is accessible via a public domain.



Your nginx config may look something like as follows (using PORT

`7331` and DOMAIN `ocamlot.xyz`):

```

server {

    server_name ocamlot.xyz;



    listen 443 ssl; # managed by Certbot



    location / {

        proxy_pass http://localhost:7331;

    }

    ssl_certificate /etc/letsencrypt/live/ocamlot.xyz/fullchain.pem; # managed by Certbot

    ssl_certificate_key /etc/letsencrypt/live/ocamlot.xyz/privkey.pem; # managed by Certbot

    include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot

    ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot

}



server {

    if ($host = ocamlot.xyz) {

        return 301 https://$host$request_uri;

   } # managed by Certbot



   listen 80 default_server;

   listen [::]:80 default_server;



   return 404; # managed by Certbot

}



```



To deploy the server, do the following:



1. Create a new user to run the ocamlot process



```

$ sudo useradd -r -s /bin/false -m -d /var/lib/ocamlot -U ocamlot

```



2. Create a new postgres user and database:



```bash

$ sudo -Hu postgres psql



postgres=# CREATE ROLE ocamlot WITH password = '';

CREATE ROLE



postgres=# ALTER ROLE ocamlot WITH login;

ALTER ROLE



postgres=# CREATE DATABASE ocamlot WITH OWNER ocamlot;

CREATE DATABASE

```



3. Clone the development repository:



```

$ sudo mkdir -p /opt/ocamlot

$ sudo chown -R ocamlot:ocamlot /opt/ocamlot

$ sudo -Hu ocamlot git clone https://codeberg.org/gopiandcode/ocamlot /opt/ocamlot

```



4. Switch user to the ocamlot user:



```

$ sudo -Hu ocamlot bash

```



5. Setup opam:



```

$ opam init



$ eval $(opam env)



$ opam update

```



6. Install dev dependencies:



```

$ cd /var/lib/ocamlot



$ git clone https://github.com/gopiandcode/petrol



$ cd ./petrol



$ opam pin .

```



7. Build the project



```

$ cd /opt/ocamlot



$ opam update && opam install --deps-only .



$ dune build

```



8. Modify `./scripts/run.sh` with domain and port:



```

# file: ./scripts/run.sh



#!/bin/bash

/opt/ocamlot/_build/default/bin/main.exe -u 'ocamlot:@localhost:5432' -d "ocamlot.xyz" -p 7331 -D

```



9. Create an account via the web UI, with username ``



10. Promote user `` to admin



```

/opt/ocamlot/_build/default/bin/main.exe -u 'ocamlot:@localhost:5432' -d "ocamlot.xyz" --promote-to-admin=

```



11. Copy over `./scripts/ocamlot.service` to `etc/systemd/system/ocamlot.service`:



```

sudo cp /opt/ocamlot/scripts/ocamlot.service /etc/systemd/system/ocamlot.service

```

12. Enable and start `ocamlot.service`:



```

sudo systemctl enable --now ocamlot.service

```



## Development Setup



To develop OCamlot locally, we provide a docker-compose file for

setting up a network with a running OCamlot (port 7331) and pleroma

(port 4000) instance. The two containers are connected through a

network in which the OCamlot server can be found under the domain name

`testing.ocamlot.xyz` and the Pleroma server can be found under the

domain name `pleroma.ocamlot.xyz`. (Note: because there is no easy way

of updating the CA store that elixir uses, you will need to patch your

local copy of pleroma to disable certification verification for

interaction between the two containers to work).



*You will need docker-compose and docker*



1. Clone a copy of pleroma to the `tests/integration_test/` directory:



```bash

git clone -b  v2.5.0 --single-branch https://git.pleroma.social/pleroma/pleroma ./tests/integration_tests/pleroma

```



2. Apply patch to pleroma to disable TLS validation (required for local testing)



```bash

(cd ./tests/integration_tests/pleroma && git apply ../pleroma.patch)

```



3. Change directory into the `tests/integration_test/` directory:



```bash

cd ./tests/integration_tests/

```



4. Run `docker-compose build` with the local docker-compose file:



```bash

docker-compose -f ./docker-compose.local.yml build

```



5. Run `docker-compose up` with the local docker-compose file:



```bash

docker-compose -f ./docker-compose.local.yml up

```

Now pleroma will be available at `https://localhost:4000` and ocamlot at `https://localhost:7331`



6. (optional), if you want to update the OCamlot server after making some changes locally, do the following:



   - 6.1. Find out the name of the OCamlot server container using `docker container list`

   - 6.2. Attach to the OCamlot container using `docker container exec -it  bash`

   - 6.3. Kill the running OCamlot process using `pkill -9 main.exe`

   - 6.4. Run `eval $(opam env)`, then `dune build` then `dune exec -- ./bin/main.exe -d testing.ocamlot.xyz -D`