PostgreSQL procedural language handler for Clojure via SCI

Related tags

Database clojure postgresql
Overview

pl/sci

project chat

Status

This is very much an experiment and I'm open to feedback on where to take this next.

Build

Requirements

Steps

  1. Set GRAALVM_HOME to your GraalVM directory (the one that contains the bin directory).

  2. Run script/compile-libplsci. Currently this build script contains some macOS-specific things like .dylib and install_name_tool. This will be made more portable later on (PR welcome).

  3. Run cargo pgx run pg13. Then try it out:

psql (13.0)
Type "help" for help.

plsci=# create extension plsci;
CREATE EXTENSION

plsci=# select * from plsci('(+ 1 2 3)');
 plsci
-------
 6
(1 row)

License

Copyright © 2021 Michiel Borkent

Distributed under the EPL License. See LICENSE.

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Comments
  • benchmarks for plsci

    benchmarks for plsci

    I'm currently using https://github.com/pllua/pllua at the moment. Are there any benchmarks for plsci in comparison:

    ie: https://gist.github.com/xvaara/df0b802b86d2aa4f30b88a3fd6b69a14

    opened by zcaudate 1
  • Second invocation of `cargo pgx run pg13` after building libplsci fails with

    Second invocation of `cargo pgx run pg13` after building libplsci fails with "Symbol not found: _eval_string"

    The first time after building libplsci I can successfully run cargo pgx run:

    installing extension
     Copying control file to `/Users/borkdude/.pgx/13.0/pgx-install/share/postgresql/extension/plsci.control`
     Copying shared library to `/Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so`
     Writing extension schema to `/Users/borkdude/.pgx/13.0/pgx-install/share/postgresql/extension/plsci--1.0.sql`
    Finished installing plsci
    Starting Postgres v13 on port 28813
    Re-using existing database plsci
psql (13.0)
Type "help" for help.

plsci=# select * from plsci('(+ 1 2 3)');
 plsci
-------
 6
(1 row)

plsci=# ^D\q

    However, the second time, I get:

    $ cargo pgx run pg13
    Stopping Postgres v13
building extension with features `pg13`
"cargo" "build" "--features" "pg13" "--no-default-features"
   Compiling plsci v0.0.0 (/Users/borkdude/Dropbox/dev/clojure/plsci)
    Finished dev [unoptimized + debuginfo] target(s) in 2.83s

installing extension
     Copying control file to `/Users/borkdude/.pgx/13.0/pgx-install/share/postgresql/extension/plsci.control`
     Copying shared library to `/Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so`
     Writing extension schema to `/Users/borkdude/.pgx/13.0/pgx-install/share/postgresql/extension/plsci--1.0.sql`
    Finished installing plsci
    Starting Postgres v13 on port 28813
    Re-using existing database plsci
psql (13.0)
Type "help" for help.

plsci=# select * from plsci('(+ 1 2 3)');
ERROR:  could not load library "/Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so": dlopen(/Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so, 10): Symbol not found: _eval_string
  Referenced from: /Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so
  Expected in: flat namespace
 in /Users/borkdude/.pgx/13.0/pgx-install/lib/postgresql/plsci.so
plsci=#
    opened by borkdude 2
  • Create procedural language handler

    Create procedural language handler

    @eeeebbbbrrrr said:

    next you need to make a procedural language handler. You're free to use my not-yet-released pl/rust as a starting point: https://github.com/zombodb/plrust

    opened by borkdude 2
Owner
Michiel Borkent
Clojure developer, author and maintainer of clj-kondo, babashka and sci.
Michiel Borkent
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