Compare request by score

.ameba.yml

@@ -0,0 +1,14 @@
+# This configuration file was generated by `ameba --gen-config`
+# on 2022-12-03 11:45:30 UTC using Ameba version 1.3.1.
+# The point is for the user to remove these configuration records
+# one by one as the reported problems are removed from the code base.
+
+# Problems found: 1
+# Run `ameba --only Metrics/CyclomaticComplexity` for details
+Metrics/CyclomaticComplexity:
+  Description: Disallows methods with a cyclomatic complexity higher than `MaxComplexity`
+  MaxComplexity: 15
+  Excluded:
+  - src/replay/http/request.cr
+  Enabled: true
+  Severity: Convention

spec/replay/http/request_spec.cr

@@ -20,6 +20,56 @@ describe HTTPRequest do
     actual_metadatas["indexed"]["body"].should eq("")
     actual_metadatas["not_indexed"]["body"].should eq("HELLO")
   end
+
+  it "can compare json proeprties" do
+    headers = HTTP::Headers{
+      "Content-Type" => "application/json",
+    }
+    json = %q{
+      {
+        "foo":"bar",
+        "baz":"qux",
+        "hoge": {
+          "fuga": 1,
+          "moge":"bar",
+          "baz" : [1,3,2]
+        }
+      }
+    }
+
+    another_json = %q{
+      {
+        "hoge": {
+          "fuga": 1
+        }
+      }
+    }
+    request = HTTP::Request.new("POST", "/hello", headers, json)
+    request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
+    request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello", method: "POST", headers: headers.to_h, body: another_json, params: {} of String => String)
+    (request2.score(request1)).should eq 1
+  end
+
+  it "can get multiple properties via server request" do
+    headers = HTTP::Headers{"Content-Type" => "text/plain"}
+    request = HTTP::Request.new("POST", "/hello", headers, "HELLO")
+    actual = HTTPRequest.new(request, URI.parse "http://base.uri")
+    # Write to response
+    actual.host_name.should eq("base.uri")
+    actual.path.should eq("/hello")
+    actual.method.should eq("POST")
+    actual.body.should eq("HELLO")
+    actual.body.should eq("HELLO")
+    actual.headers["Content-Type"][0].should eq("text/plain")
+    actual.base_index.should eq("ce3e48c460a779f1554cd6e845a5fadf8e2c9f3b5126c65207294508e2592f6e")
+    actual_metadatas = actual.metadatas
+    actual_metadatas["host"].should eq("base.uri")
+    actual_metadatas["method"].should eq("POST")
+    actual_metadatas["path"].should eq("/hello")
+    actual_metadatas["indexed"]["body"].should eq("")
+    actual_metadatas["not_indexed"]["body"].should eq("HELLO")
+  end
+
   it "can compare json proeprties" do
     headers = HTTP::Headers{
       "Content-Type" => "application/json",
@@ -47,8 +97,38 @@ describe HTTPRequest do
     request = HTTP::Request.new("POST", "/hello", headers, json)
     request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
     request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello", method: "POST", headers: headers.to_h, body: another_json, params: {} of String => String)
-    (request2 == request1).should be_true
+    (request2.score(request1)).should eq 2
+  end
+
+  it "can compare json proeprties" do
+    headers = HTTP::Headers{
+      "Content-Type" => "application/json",
+    }
+    json = %q{
+      {
+        "foo":"bar",
+        "baz":"qux",
+        "hoge": {
+          "fuga": 1,
+          "moge":"bar",
+          "baz" : [1,3,2]
+        }
+      }
+    }
+
+    another_json = %q{
+      {
+        "hoge": {
+          "fuga": 1
+        }
+      }
+    }
+    request = HTTP::Request.new("POST", "/hello", headers, json)
+    request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
+    request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/bye", method: "POST", headers: headers.to_h, body: another_json, params: {} of String => String)
+    (request2.score(request1)).should eq -1
   end
+
   it "can not compare json proeprties" do
     headers = HTTP::Headers{
       "Content-Type" => "application/json",
@@ -76,8 +156,9 @@ describe HTTPRequest do
     request = HTTP::Request.new("POST", "/hello", headers, json)
     request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
     request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello", method: "POST", headers: headers.to_h, body: another_json, params: {} of String => String)
-    (request2 == request1).should be_false
+    (request2.score(request1)).should eq -1
   end
+
   it "can compare form proeprties" do
     headers = HTTP::Headers{
       "Content-Type" => "application/x-www-form-urlencoded",
@@ -88,7 +169,7 @@ describe HTTPRequest do
     request = HTTP::Request.new("POST", "/hello", headers, form)
     request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
     request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello", method: "POST", headers: headers.to_h, body: another_form, params: {} of String => String)
-    (request2 == request1).should be_true
+    (request2.score(request1)).should eq 2
   end
   it "can not compare form proeprties" do
     headers = HTTP::Headers{
@@ -98,7 +179,7 @@ describe HTTPRequest do
     another_form = "foo=baz&fuga=1"
     request = HTTP::Request.new("POST", "/hello", headers, form)
     request1 = HTTPRequest.new(request, URI.parse "http://base.uri")
-    request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello", method: "POST", headers: headers.to_h, body: another_form, params: {} of String => String)
-    (request2 == request1).should be_false
+    request2 = HTTPRequest.new(id: "foo", base_uri: URI.parse("http://base.uri"), path: "/hello_foo", method: "POST", headers: headers.to_h, body: another_form, params: {} of String => String)
+    (request2.score(request1)).should eq -1
   end
 end

spec/support/mocks.cr

@@ -57,8 +57,12 @@ class MockRequest
     @base_index
   end
 
-  def ==(other : Request)
-    self.hash == other.hash
+  def score(other : Request) : Int32
+    if self.hash == other.hash
+      1
+    else
+      -1
+    end
   end
 
   def proxy

src/replay.cr

@@ -2,5 +2,5 @@ require "./cli"
 
 # TODO: Write documentation for `Replay`
 module Replay
-  VERSION = "0.2.0"
+  VERSION = "0.2.4"
 end

src/replay/datasource/filesystem.cr

@@ -32,12 +32,18 @@ class FileSystemDatasource
       Replay::Log.debug { "No index_file avairable." }
       NoIndexFound.new(meta_index)
     else
-      found_index_file = index_files.find do |index_file|
+      Replay::Log.debug { "#{index_files.size} index_file are avairable." }
+      most_matched_index_file_path : String? = index_files.map do |index_file|
+        Replay::Log.debug { "Parsing: #{index_file}" }
         candidate = @requests.from(JSON.parse(File.read(index_file)))
-        candidate == request
-      end
-      found_index_file.try do |found|
-        Replay::Log.debug { "Found index_file path: #{found}" }
+        scored = candidate.score(request)
+        Replay::Log.debug { "Score: #{scored} for #{index_file}" }
+        {scored, index_file}
+      end.max_by? do |t|
+        t[0]
+      end.try &.[1]
+      most_matched_index_file_path.try do |found|
+        Replay::Log.debug { "Most matched index_file path: #{found}" }
         found_index = @requests.from(JSON.parse(File.read(found)))
         body_file = Dir["#{@reply_file_dir}/#{found_index.id_index}"].first?
         header_file = Dir["#{@reply_file_dir}/#{found_index.id_index}_headers"].first?

src/replay/errors.cr

@@ -35,8 +35,8 @@ struct NoResourceFound
 end
 
 struct CorruptedReplayResource
-  getter index
+  getter message, index
 
-  def initialize(@index : String)
+  def initialize(@message : String, @index : String? = nil)
   end
 end

src/replay/http/errors.cr

@@ -26,7 +26,7 @@ class HTTPErrorHandler
       message = "Not recorded yet : No resource found : #{error.index}"
     when CorruptedReplayResource
       response.status_code = 500
-      message = "Broken resource : #{error.index}"
+      message = "Broken resource : #{error.message} -> #{error.index}"
     else
       response.status_code = 500
     end

src/replay/http/request.cr

@@ -72,16 +72,24 @@ class HTTPRequest
     "#{base_index}_#{@id}"
   }
 
-  def ==(other : Request) : Bool
+  def score(other : Request) : Int32
     Replay::Log.debug { "Comparing : #{self.base_index} and #{other.base_index}." }
     case other
     when HTTPRequest
-      # TODO: Plaggable comparators
-      other.base_index == self.base_index &&
-        match_headers(self, other) &&
-        (self.body.empty? || self.body == other.body || match_json(self, other) || match_form(self, other))
+      if (other.base_index != self.base_index || !match_headers(self, other))
+        -1
+      else
+        # TODO: Plaggable comparators
+        if self.body.empty?
+          0
+        elsif self.body == other.body
+          1024
+        else
+          match_json(self, other) + match_form(self, other)
+        end
+      end
     else
-      false
+      -1
     end
   end
 
@@ -90,46 +98,52 @@ class HTTPRequest
       (i.params.empty? || i.params.find { |k, v| !other.params[k] || other.params[k] != v } == nil)
   end
 
-  private def match_json(i : Request, other : Request) : Bool
+  private def match_json(i : Request, other : Request) : Int32
     me = JSON.parse i.body
     another = JSON.parse other.body
     match_json_internal me, another
   rescue e : JSON::ParseException
-    false
+    0
   end
 
-  private def match_json_internal(me : JSON::Any, other : JSON::Any) : Bool
-    me.as_h.keys.find do |key|
+  private def match_json_internal(me : JSON::Any, other : JSON::Any) : Int32
+    me.as_h.keys.reduce(0) do |acc, key|
       case value = other[key]
       when .as_s?
-        value != me[key].as_s?
+        value == me[key].as_s? ? acc + 1 : return -1
       when .as_i?
-        value != me[key].as_i?
+        value == me[key].as_i? ? acc + 1 : return -1
       when .as_bool?
-        value != me[key].as_bool?
+        value == me[key].as_bool? ? acc + 1 : return -1
       when .as_a?
-        value != me[key].as_a?
+        value == me[key].as_a? ? acc + 1 : return -1
       when .as_f?
-        value != me[key].as_f?
+        value == me[key].as_f? ? acc + 1 : return -1
       when .as_h?
         me[key].as_h?.try do |_|
-          match_json_internal me[key], value
-        end ? nil : value
+          child = match_json_internal me[key], value
+          child == -1 ? return -1 : child + acc
+        end || acc
+      else
+        acc
       end
-    end == nil
+    end || 0
   end
 
-  private def match_form(i : Request, other : Request) : Bool
+  private def match_form(i : Request, other : Request) : Int32
     me = split_form(i.body)
     another = split_form(other.body)
-    me.keys.find do |k|
-      !another.keys.includes?(k)
-    end == nil &&
-      me.find do |k, v|
-        another[k]?.try do |a|
-          v == nil || a != v
+    begin
+      me.keys.reduce(0) do |acc, key|
+        if me[key] == another[key]
+          acc + 1
+        else
+          return -1
         end
-      end == nil
+      end
+    rescue e : KeyError
+      0
+    end
   end
 
   private def split_form(body)

src/replay/request.cr

@@ -5,7 +5,7 @@ module Request
   def base_index : String
   end
 
-  def ==(other : Request) : Bool
+  def score(other : Request) : Int32
   end
 
   def proxy