Add swift::proxy::slo class

swift::proxy::slo class is used to configure proxy slo middleware.

Change-Id: Ic751d2e89de39478b55e3323ddf220610b1b7541
Implements: blueprint icehouse-proxyserver-middlewares

manifests/proxy/slo.pp

@@ -0,0 +1,59 @@
+#
+# Configure swift slo.
+#
+# == Examples
+#
+#  include swift::proxy::slo
+#
+# == Parameters
+#
+# [*max_manifest_segments*]
+# Max manifest segments.
+# Default to 1000.
+#
+# [*max_manifest_size*]
+# Max manifest size.
+# Default to 2097152.
+#
+# [*min_segment_size*]
+# minimal segment size
+# Default to 1048576.
+#
+# [*rate_limit_after_segment*]
+# Start rate-limiting SLO segment serving after the Nth segment of a segmented object.
+# Default to 10.
+#
+# [*rate_limit_segments_per_sec*]
+# Once segment rate-limiting kicks in for an object, limit segments served to N per second.
+# 0 means no rate-limiting.
+# Default to 0.
+#
+# [*max_get_time*]
+# Time limit on GET requests (seconds).
+# Default to 86400.
+#
+# == Authors
+#
+#   Xingchao Yu  yuxcer@gmail.com
+#
+# == Copyright
+#
+# Copyright 2014 UnitedStack licensing@unitedstack.com
+#
+
+class swift::proxy::slo (
+  $max_manifest_segments       = '1000',
+  $max_manifest_size           = '2097152',
+  $min_segment_size            = '1048576',
+  $rate_limit_after_segment    = '10',
+  $rate_limit_segments_per_sec = '0',
+  $max_get_time                = '86400'
+) {
+
+  concat::fragment { 'swift_slo':
+    target  => '/etc/swift/proxy-server.conf',
+    content => template('swift/proxy/slo.conf.erb'),
+    order   => '35',
+  }
+
+}

spec/classes/swift_proxy_slo_spec.rb

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+require 'spec_helper'
+
+describe 'swift::proxy::slo' do
+
+  let :facts do
+    {
+      :concat_basedir => '/var/lib/puppet/concat'
+    }
+  end
+
+  let :pre_condition do
+    'class { "concat::setup": }
+    concat { "/etc/swift/proxy-server.conf": }'
+  end
+
+  let :fragment_file do
+    "/var/lib/puppet/concat/_etc_swift_proxy-server.conf/fragments/35_swift_slo"
+  end
+
+  describe "when using default parameters" do
+    it 'should build the fragment with correct parameters' do
+      verify_contents(subject, fragment_file,
+        [
+          '[filter:slo]',
+          'use = egg:swift#slo',
+          'max_manifest_segments = 1000',
+          'max_manifest_size = 2097152',
+          'min_segment_size = 1048576',
+          'rate_limit_after_segment = 10',
+          'rate_limit_segments_per_sec = 0',
+          'max_get_time = 86400',
+        ]
+      )
+    end
+  end
+
+  describe "when overriding default parameters" do
+    let :params do
+      {
+        :max_manifest_segments     => '2000',
+        :max_manifest_size         => '500000',
+        :rate_limit_after_segment  => '30',
+        :max_get_time              => '6400',
+      }
+    end
+    it 'should build the fragment with correct parameters' do
+      verify_contents(subject, fragment_file,
+        [
+          '[filter:slo]',
+          'use = egg:swift#slo',
+          'max_manifest_segments = 2000',
+          'max_manifest_size = 500000',
+          'rate_limit_after_segment = 30',
+          'max_get_time = 6400',
+        ]
+      )
+    end
+  end
+
+end

templates/proxy/slo.conf.erb

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+[filter:slo]
+use = egg:swift#slo
+max_manifest_segments = <%= @max_manifest_segments %>
+max_manifest_size = <%= @max_manifest_size %>
+min_segment_size = <%= @min_segment_size %>
+rate_limit_after_segment = <%= @rate_limit_after_segment %>
+rate_limit_segments_per_sec = <%= @rate_limit_segments_per_sec %>
+max_get_time = <%= @max_get_time %>