Configure to run as Lambda

Author: iHiD

.rubocop.yml

@@ -24,10 +24,6 @@ Layout/MultilineMethodCallIndentation:
 Layout/EmptyLinesAroundAccessModifier:
   EnforcedStyle: only_before
 
-Layout/LineLength:
-  Exclude:
-    - "scripts/generate_fixture.rb"
-
 Lint/SuppressedException:
   Exclude:
     - "test/**/*"

Dockerfile

@@ -1,15 +1,15 @@
-FROM ruby:2.6.6-alpine3.12
+FROM amazon/aws-lambda-ruby
 
-RUN apk update && apk upgrade && \
-    apk add --no-cache bash git openssh && \
-    apk add build-base gcc wget git
+RUN yum install -y make gcc
 
-RUN gem install bundler -v 2.1.4
+WORKDIR /var/task
 
-WORKDIR /opt/snippet-extractor
+RUN gem install json -v '2.3.1' 
 
 COPY . .
 
-RUN bundle install
+RUN bundle config set deployment 'true' && \
+    bundle config set without 'development test' && \
+    bundle install
 
-ENTRYPOINT ["sh", "/opt/snippet-extractor/bin/run.sh"]
+CMD [ "source.SnippetExtractor.process_request." ]

Gemfile

@@ -13,6 +13,5 @@ group :test do
   gem 'minitest', '~> 5.10', '!= 5.10.2'
   gem 'minitest-stub-const'
   gem 'mocha'
-  gem 'pry'
   gem 'simplecov', '~> 0.17.0'
 end

Gemfile.lock

@@ -1,17 +1,12 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    coderay (1.1.3)
     docile (1.3.2)
     json (2.3.1)
     mandate (0.3.0)
-    method_source (1.0.0)
     minitest (5.14.2)
     minitest-stub-const (0.6)
     mocha (1.11.2)
-    pry (0.13.1)
-      coderay (~> 1.1)
-      method_source (~> 1.0)
     rake (13.0.1)
     simplecov (0.17.1)
       docile (~> 1.1)
@@ -28,7 +23,6 @@ DEPENDENCIES
   minitest (~> 5.10, != 5.10.2)
   minitest-stub-const
   mocha
-  pry
   rake
   simplecov (~> 0.17.0)
 

lib/snippet_extractor.rb

@@ -5,10 +5,7 @@
 loader.setup
 
 module SnippetExtractor
-  def self.extract(language_slug, submission_path, output_path)
-    submission_pathname = Pathname.new(submission_path)
-    output_pathname = Pathname.new(output_path)
-
-    #ExtractSnippet.(exercise_slug, submission_pathname, output_pathname)
+  def self.process_request(event:, context:)
+    ProcessRequest.(event, context)
   end
 end

lib/snippet_extractor/extract_snippet.rb

@@ -8,7 +8,8 @@ def call
       lines.drop_while do |line|
         naked_line = line.strip
         next true if naked_line.empty?
-        next true if ignore_list.any? {|ignore| naked_line.start_with?(ignore)}
+        next true if ignore_list.any? { |ignore| naked_line.start_with?(ignore) }
+
         false
       end[0...10].join
     end
@@ -20,7 +21,7 @@ def lines
     memoize
     def ignore_list
       slug = language.to_s.gsub(/[^a-z0-9-]/, '')
-      File.read(File.expand_path("../../languages/#{slug}.txt",__FILE__  )).lines.map(&:rstrip)
+      File.read(File.expand_path("../../languages/#{slug}.txt", __FILE__)).lines.map(&:rstrip)
     end
   end
 end

lib/snippet_extractor/process_request.rb

@@ -0,0 +1,32 @@
+module SnippetExtractor
+  class ProcessRequest
+    include Mandate
+
+    initialize_with :event, :context
+
+    def call
+      p event
+      p context
+      snippet = ExtractSnippet.(source_code, language)
+
+      {
+        statusCode: 200,
+        headers: {
+          'Content-Length': snippet.bytesize,
+          'Content-Type': 'application/plain; charset=utf-8',
+          'Content-disposition': 'attachment;snippet.txt'
+        },
+        isBase64Encoded: false,
+        body: snippet
+      }
+    end
+
+    def source_code
+      event['source_code']
+    end
+
+    def language
+      event['language']
+    end
+  end
+end

test/extract_snippet_test.rb

@@ -4,59 +4,59 @@ module SnippetExtractor
   module Languages
     class RubyTest < Minitest::Test
       def test_strips_correctly
-        code = <<-CODE
-        # This is a file
-        # With some comments in it
-        
-        # And a blank line ⬆️
-        # It has some requires like this:
-        require 'json'
+        code = <<~CODE
+          # This is a file
+          # With some comments in it
 
-        # And then eventually the code
-        class TwoFer
-          ...
-        end
+          # And a blank line ⬆️
+          # It has some requires like this:
+          require 'json'
+
+          # And then eventually the code
+          class TwoFer
+            ...
+          end
         CODE
 
-        expected = <<-CODE
-        class TwoFer
-          ...
-        end
+        expected = <<~CODE
+          class TwoFer
+            ...
+          end
         CODE
 
         assert_equal expected, ExtractSnippet.(code, :ruby)
       end
 
       def test_extracts_first_10
-        code = <<-CODE
-        # Here is some code
-        class TwoFer
-          Line 2
-          Line 3
-          Line 4
-          Line 5
-          Line 6
-          Line 7
-          Line 8
-          Line 9
-          Line 10
-          Line 11
-          Line 12
-          Line 13
-        end
+        code = <<~CODE
+          # Here is some code
+          class TwoFer
+            Line 2
+            Line 3
+            Line 4
+            Line 5
+            Line 6
+            Line 7
+            Line 8
+            Line 9
+            Line 10
+            Line 11
+            Line 12
+            Line 13
+          end
         CODE
 
-        expected = <<-CODE
-        class TwoFer
-          Line 2
-          Line 3
-          Line 4
-          Line 5
-          Line 6
-          Line 7
-          Line 8
-          Line 9
-          Line 10
+        expected = <<~CODE
+          class TwoFer
+            Line 2
+            Line 3
+            Line 4
+            Line 5
+            Line 6
+            Line 7
+            Line 8
+            Line 9
+            Line 10
         CODE
 
         assert_equal expected, ExtractSnippet.(code, :ruby)

test/languages/csharp_test.rb

@@ -4,35 +4,34 @@ module SnippetExtractor
   module Languages
     class CsharpTest < Minitest::Test
       def test_full_example
-        code = <<-CODE
-        /* Welcome to my program
-        * It is very cool!!
-        */
+        code = <<~CODE
+          /* Welcome to my program
+          * It is very cool!!
+          */
 
-        using something.baddass
+          using something.baddass
 
-        // I love C#!!
+          // I love C#!!
 
-        public static class Grains
-        {
-            public static double Square(int i) => Math.Pow(2, i - 1);
+          public static class Grains
+          {
+              public static double Square(int i) => Math.Pow(2, i - 1);
 
-            public static double Total() => Enumerable.Range(1, 64).Select(Square).Sum();
-        }
+              public static double Total() => Enumerable.Range(1, 64).Select(Square).Sum();
+          }
         CODE
 
-        expected = <<-CODE
-        public static class Grains
-        {
-            public static double Square(int i) => Math.Pow(2, i - 1);
+        expected = <<~CODE
+          public static class Grains
+          {
+              public static double Square(int i) => Math.Pow(2, i - 1);
 
-            public static double Total() => Enumerable.Range(1, 64).Select(Square).Sum();
-        }
+              public static double Total() => Enumerable.Range(1, 64).Select(Square).Sum();
+          }
         CODE
 
         assert_equal expected, ExtractSnippet.(code, :csharp)
       end
     end
   end
 end
-

test/languages/ruby_test.rb

@@ -4,24 +4,24 @@ module SnippetExtractor
   module Languages
     class RubyTest < Minitest::Test
       def test_full_example
-        code = <<-CODE
-        # This is a file
-        # With some comments in it
-        
-        # And a blank line ⬆️
-        # It has some requires like this:
-        require 'json'
+        code = <<~CODE
+          # This is a file
+          # With some comments in it
 
-        # And then eventually the code
-        class TwoFer
-          ...
-        end
+          # And a blank line ⬆️
+          # It has some requires like this:
+          require 'json'
+
+          # And then eventually the code
+          class TwoFer
+            ...
+          end
         CODE
 
-        expected = <<-CODE
-        class TwoFer
-          ...
-        end
+        expected = <<~CODE
+          class TwoFer
+            ...
+          end
         CODE
 
         assert_equal expected, ExtractSnippet.(code, :ruby)