Add a multiplier to the matrix (#5298)

* add a multiplier to the matrix

* add rounding

* remove scale_factor restrictions

* clamp for overflow error

* update check to match error message

* enforce clamping on < 0 and increase test coverage

* add an invalid scale_factor value to node tests

* increase test coverage

* changelog

include/engine/api/table_parameters.hpp

@@ -79,6 +79,8 @@ struct TableParameters : public BaseParameters
 
     AnnotationsType annotations = AnnotationsType::Duration;
 
+    double scale_factor = 1;
+
     TableParameters() = default;
     template <typename... Args>
     TableParameters(std::vector<std::size_t> sources_,
@@ -105,10 +107,13 @@ struct TableParameters : public BaseParameters
                     const AnnotationsType annotations_,
                     double fallback_speed_,
                     FallbackCoordinateType fallback_coordinate_type_,
+                    double scale_factor_,
                     Args... args_)
         : BaseParameters{std::forward<Args>(args_)...}, sources{std::move(sources_)},
           destinations{std::move(destinations_)}, fallback_speed{fallback_speed_},
-          fallback_coordinate_type{fallback_coordinate_type_}, annotations{annotations_}
+          fallback_coordinate_type{fallback_coordinate_type_}, annotations{annotations_},
+          scale_factor{scale_factor_}
+
     {
     }
 
@@ -135,6 +140,9 @@ struct TableParameters : public BaseParameters
         if (fallback_speed < 0)
             return false;
 
+        if (scale_factor <= 0)
+            return false;
+
         return true;
     }
 };

include/nodejs/node_osrm_support.hpp

@@ -1229,6 +1229,24 @@ argumentsToTableParameter(const Nan::FunctionCallbackInfo<v8::Value> &args,
         }
     }
 
+    if (obj->Has(Nan::New("scale_factor").ToLocalChecked()))
+    {
+        auto scale_factor = obj->Get(Nan::New("scale_factor").ToLocalChecked());
+
+        if (!scale_factor->IsNumber())
+        {
+            Nan::ThrowError("scale_factor must be a number");
+            return table_parameters_ptr();
+        }
+        else if (scale_factor->NumberValue() <= 0)
+        {
+            Nan::ThrowError("scale_factor must be > 0");
+            return table_parameters_ptr();
+        }
+
+        params->scale_factor = static_cast<double>(scale_factor->NumberValue());
+    }
+
     return params;
 }
 

include/server/api/table_parameter_grammar.hpp

@@ -56,16 +56,20 @@ struct TableParametersGrammar : public BaseParametersGrammar<Iterator, Signature
                                      engine::api::TableParameters::FallbackCoordinateType::Input)(
             "snapped", engine::api::TableParameters::FallbackCoordinateType::Snapped);
 
+        scale_factor_rule =
+            qi::lit("scale_factor=") >
+            (double_)[ph::bind(&engine::api::TableParameters::scale_factor, qi::_r1) = qi::_1];
+
         table_rule = destinations_rule(qi::_r1) | sources_rule(qi::_r1);
 
-        root_rule =
-            BaseGrammar::query_rule(qi::_r1) > -qi::lit(".json") >
-            -('?' > (table_rule(qi::_r1) | base_rule(qi::_r1) | fallback_speed_rule(qi::_r1) |
-                     (qi::lit("fallback_coordinate=") >
-                      fallback_coordinate_type
-                          [ph::bind(&engine::api::TableParameters::fallback_coordinate_type,
-                                    qi::_r1) = qi::_1])) %
-                        '&');
+        root_rule = BaseGrammar::query_rule(qi::_r1) > -qi::lit(".json") >
+                    -('?' > (table_rule(qi::_r1) | base_rule(qi::_r1) | scale_factor_rule(qi::_r1) |
+                             fallback_speed_rule(qi::_r1) |
+                             (qi::lit("fallback_coordinate=") >
+                              fallback_coordinate_type
+                                  [ph::bind(&engine::api::TableParameters::fallback_coordinate_type,
+                                            qi::_r1) = qi::_1])) %
+                                '&');
     }
 
     TableParametersGrammar(qi::rule<Iterator, Signature> &root_rule_) : BaseGrammar(root_rule_)
@@ -94,6 +98,7 @@ struct TableParametersGrammar : public BaseParametersGrammar<Iterator, Signature
     qi::rule<Iterator, Signature> sources_rule;
     qi::rule<Iterator, Signature> destinations_rule;
     qi::rule<Iterator, Signature> fallback_speed_rule;
+    qi::rule<Iterator, Signature> scale_factor_rule;
     qi::rule<Iterator, std::size_t()> size_t_;
     qi::symbols<char, engine::api::TableParameters::AnnotationsType> annotations;
     qi::rule<Iterator, engine::api::TableParameters::AnnotationsType()> annotations_list;