- logstash_dir is where we write stuff. not necessarily where our patterns

are installed, so allow pattern_dir.

etc/logstashd.yaml

@@ -1,6 +1,7 @@
 ---
 mqhost: localhost
 logstash_dir: /var/logstash
+pattern_dir: /opt/logstash/patterns
 
 log-types:
   linux-syslog:

lib/log.rb

@@ -18,6 +18,7 @@ module LogStash
       check_hash_keys(config, REQUIRED_KEYS, OPTIONAL_KEYS)
 
       @home = config[:logstash_dir] || ENV["LOGSTASH_DIR"] || "/opt/logstash"
+      @pattern_dir = config[:pattern_dir] || @home
       @attrs = {"log:type" => config[:type],
                 "log:encoding" => config[:encoding]}
       if config[:attrs]

lib/log/text.rb

@@ -25,12 +25,12 @@ module LogStash
 
         super(config)
 
-        if not File.exists?("#{@home}/patterns")
-          throw StandardError.new("#{@home}/patterns/ does not exist")
+        if not File.exists?("#{@pattern_dir}/patterns")
+          throw StandardError.new("#{@pattern_dir}/patterns/ does not exist")
         end
 
         pattern_files = []
-        Find.find("#{@home}/patterns") do |file|
+        Find.find("#{@pattern_dir}/patterns") do |file|
           # ignore directories
           next if File.directory?(file)
           # ignore dotfiles