Solr and Corona Installation

Prerequisites

1. Install Solr

• download http://archive.apache.org/dist/lucene/solr/8.0.0/solr-8.0.0.tgz (or newest version)
• unzip and move solr-8.0.0 to put solr home folder in you $HOME directory or any place (outside your clojure project)
• go to solr-8.0.0/server/solr and copy solr.xml.
• paste it in your solr home dir (e.g. ~/solr-8.0.0)

2. set SOLR_HOME env var to point to solr home dir

For this library to work properly, you need to set SOLR_HOME var pointing to solr home folder you just installed.

For MAC users: You can put the following in your ~/.bash_profile file source ./.profile Then, put the following in your ~/.profile file

#Solr
export SOLR_HOME="$HOME/solr-8.0.0" # put right version here
export SOLR_ULIMIT_CHECKS=false

Notes:

• emacs users: You may need to add setenv SOLR_HOME /my/path/to/solr/home to your /etc/launchd.conf file and/or install [exec-path-from-shell](https://github.com/purcell/exec-path-from-shell** package allowing you to read env variables from emacs GUI. ** [Download](https://github.com/purcell/exec-path-from-shell/tags** the latest release ** install exec-path-from-shell.el with M-x package-install-file ** insert the following in ~/.emacs.d/init.el

...
;; BEGIN exec-path-from-shell
(use-package exec-path-from-shell
 :ensure t
 :if (memq window-system '(mac ns x))
 :config (setq exec-path-from-shell-variables '("PATH" "SOLR_HOME"))
 (exec-path-from-shell-initialize))
;; END exec-path-from-shell
(require 'server)
(unless (server-running-p) (server-start)))

3. Add corona library in project.clj

4. Add Solr resources to your project

You can either:

• go to the https://github.com/Stylitics/corona-demo repo and copy resources/solr/tmdb changing tmdb for the name of you core (or index)

• look at examples inside your solr home dir.

NOTE: If you start from existing example, make sure, in your $CLJ_PROJECT_HOME/resources/solr/<core-name>/conf/solrconfig.xml file contains right maching lucene version <luceneMatchVersion>8.0.0</luceneMatchVersion>

5. Test solr

From command line

• $ $SOLR_HOME/bin/solr start -p 8983
• access Solr admin from your browser: http://localhost:8983/solr/
• $ $SOLR_HOME/bin/solr stop -p 8983

From clojure

For development, you can start solr from Clojure repl.

• make sure you are seeing SOLR_HOME variable. (System/getenv "SOLR_HOME")

• then:

(require '[corona.cmd :as cmd])
(cmd/exec! :start) ;; $SOLR_HOME/bin/solr start

• access Solr admin from your browser: http://localhost:8983/solr/

• stop with: (cmd/exec! :stop)