From 97e618665a5df3c5c209620ea1c8cd36d9747ae3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Isma=C3=ABl=20Bouya?= <ismael.bouya@normalesup.org>
Date: Sun, 11 Nov 2018 10:16:55 +0100
Subject: Store only changed reports

---
 .../lib/puppet/reports/store_changed.rb            | 72 ++++++++++++++++++++++
 .../templates/puppet/puppet.conf.erb               |  2 +-
 2 files changed, 73 insertions(+), 1 deletion(-)
 create mode 100644 modules/base_installation/lib/puppet/reports/store_changed.rb

diff --git a/modules/base_installation/lib/puppet/reports/store_changed.rb b/modules/base_installation/lib/puppet/reports/store_changed.rb
new file mode 100644
index 0000000..bb39beb
--- /dev/null
+++ b/modules/base_installation/lib/puppet/reports/store_changed.rb
@@ -0,0 +1,72 @@
+require 'puppet'
+require 'fileutils'
+require 'puppet/util'
+
+SEPARATOR = [Regexp.escape(File::SEPARATOR.to_s), Regexp.escape(File::ALT_SEPARATOR.to_s)].join
+
+Puppet::Reports.register_report(:store_changed) do
+  desc "Store the yaml report on disk.  Each host sends its report as a YAML dump
+    and this just stores the file on disk, in the `reportdir` directory.
+
+    These files collect quickly -- one every half hour -- so it is a good idea
+    to perform some maintenance on them if you use this report (it's the only
+    default report)."
+
+  def process
+    validate_host(host)
+    if status == "unchanged"
+      return
+    end
+
+    dir = File.join(Puppet[:reportdir], host)
+
+    if ! Puppet::FileSystem.exist?(dir)
+      FileUtils.mkdir_p(dir)
+      FileUtils.chmod_R(0750, dir)
+    end
+
+    # Now store the report.
+    now = Time.now.gmtime
+    name = %w{year month day hour min}.collect do |method|
+      # Make sure we're at least two digits everywhere
+      "%02d" % now.send(method).to_s
+    end.join("") + ".yaml"
+
+    file = File.join(dir, name)
+
+    begin
+      Puppet::Util.replace_file(file, 0640) do |fh|
+        fh.print to_yaml
+      end
+    rescue => detail
+       Puppet.log_exception(detail, "Could not write report for #{host} at #{file}: #{detail}")
+    end
+
+    # Only testing cares about the return value
+    file
+  end
+
+  # removes all reports for a given host?
+  def self.destroy(host)
+    validate_host(host)
+
+    dir = File.join(Puppet[:reportdir], host)
+
+    if Puppet::FileSystem.exist?(dir)
+      Dir.entries(dir).each do |file|
+        next if ['.','..'].include?(file)
+        file = File.join(dir, file)
+        Puppet::FileSystem.unlink(file) if File.file?(file)
+      end
+      Dir.rmdir(dir)
+    end
+  end
+
+  def validate_host(host)
+    if host =~ Regexp.union(/[#{SEPARATOR}]/, /\A\.\.?\Z/)
+      raise ArgumentError, _("Invalid node name %{host}") % { host: host.inspect }
+    end
+  end
+  module_function :validate_host
+end
+
diff --git a/modules/base_installation/templates/puppet/puppet.conf.erb b/modules/base_installation/templates/puppet/puppet.conf.erb
index 38a0c1b..4277714 100644
--- a/modules/base_installation/templates/puppet/puppet.conf.erb
+++ b/modules/base_installation/templates/puppet/puppet.conf.erb
@@ -1,6 +1,6 @@
 [main]
 <%
-  reports = ["store", "cat_files"]
+  reports = ["store_changed", "cat_files"]
   if @xmpp.count > 0
     reports << "xmpp"
   end
-- 
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