From 50f65bbbeb483bc1c85d06219373b4755f7aa4d3 Mon Sep 17 00:00:00 2001
From: Jeremy Friesen <jeremy.n.friesen@gmail.com>
Date: Tue, 24 Mar 2020 12:50:30 -0400
Subject: [PATCH] Adding `solr_wrapper --debug` option

Prior to this commit, it was somewhat opaque what was used in the Solr
Wrapper work. This change will provide a way to gain insight into the
configuration options that would run.
---
 exe/solr_wrapper                  |  9 +++++++++
 lib/solr_wrapper/configuration.rb |  5 ++++-
 lib/solr_wrapper/instance.rb      |  9 +++++++++
 lib/solr_wrapper/settings.rb      | 19 +++++++++++++++++++
 4 files changed, 41 insertions(+), 1 deletion(-)

diff --git a/exe/solr_wrapper b/exe/solr_wrapper
index ebf9abd..47d2948 100755
--- a/exe/solr_wrapper
+++ b/exe/solr_wrapper
@@ -67,6 +67,10 @@ args = OptionParser.new do |opts|
     options[:ignore_checksum] = true
   end
 
+  opts.on("--debug", "Output configuration parameters and exit") do |d|
+    options[:debug] = true
+  end
+
   opts.separator ""
   opts.separator subtext
 end
@@ -98,6 +102,11 @@ end
 
 instance = SolrWrapper.instance(options)
 
+if instance.debug?
+  puts instance.as_json
+  exit(0)
+end
+
 case command
 when 'clean'
   if instance.started?
diff --git a/lib/solr_wrapper/configuration.rb b/lib/solr_wrapper/configuration.rb
index 91bcaf0..18c791f 100644
--- a/lib/solr_wrapper/configuration.rb
+++ b/lib/solr_wrapper/configuration.rb
@@ -7,10 +7,13 @@ class Configuration
     def initialize(options = {})
       @config = options[:config]
       @verbose = options[:verbose]
-
       @options = load_configs(Array(options[:config])).merge(options)
     end
 
+    def debug?
+      @debug
+    end
+
     def solr_xml
       options[:solr_xml]
     end
diff --git a/lib/solr_wrapper/instance.rb b/lib/solr_wrapper/instance.rb
index e33d01a..d020cb0 100644
--- a/lib/solr_wrapper/instance.rb
+++ b/lib/solr_wrapper/instance.rb
@@ -35,9 +35,18 @@ class Instance
     # @option options [Hash] :env
     # @option options [String] :config
     def initialize(options = {})
+      @debug = options.fetch(:debug, false)
       @config = Settings.new(Configuration.new(options))
     end
 
+    def debug?
+      @debug
+    end
+
+    def as_json
+      config.as_json
+    end
+
     def host
       config.host
     end
diff --git a/lib/solr_wrapper/settings.rb b/lib/solr_wrapper/settings.rb
index 80dc565..a5ece8e 100644
--- a/lib/solr_wrapper/settings.rb
+++ b/lib/solr_wrapper/settings.rb
@@ -20,6 +20,25 @@ def initialize(static_config)
       @static_config = static_config
     end
 
+    def as_json
+      {
+        host: host,
+        zookeeper_host: zookeeper_host,
+        port: port,
+        zookeeper_port: zookeeper_port,
+        url: url,
+        instance_dir: instance_dir,
+        managed: managed?,
+        download_url: download_url,
+        download_dir: download_dir,
+        solr_zip_path: solr_zip_path,
+        version_file: version_file,
+        solr_binary: solr_binary,
+        tmp_save_dir: tmp_save_dir,
+        default_download_url: default_download_url
+      }
+    end
+
     ##
     # Get the host this Solr instance is bound to
     def host