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

CHANGELOG.md

@@ -2,6 +2,8 @@
   - Changes from 5.20.0
     - Features:
       - ADDED: all waypoints in responses now contain a distance property between the original coordinate and the snapped location. [#5255](https://github.com/Project-OSRM/osrm-backend/pull/5255)
+    - Table:
+      - ADDED: new parameter `scale_factor` which will scale the cell `duration` values by this factor. [#5298](https://github.com/Project-OSRM/osrm-backend/pull/5298)
 
 # 5.20.0
   - Changes from 5.19.0:

docs/http.md

@@ -235,9 +235,10 @@ In addition to the [general options](#general-options) the following options are
 |------------|--------------------------------------------------|---------------------------------------------|
 |sources     |`{index};{index}[;{index} ...]` or `all` (default)|Use location with given index as source.     |
 |destinations|`{index};{index}[;{index} ...]` or `all` (default)|Use location with given index as destination.|
-|annotations |`duration` (default), `distance`, or `duration,distance`|Return the requested table or tables in response. Note that computing the `distances` table is currently only implemented for CH. If `annotations=distance` or `annotations=duration,distance` is requested when running a MLD router, a `NotImplemented` error will be returned. |
-|fallback_speed|`double > 0`|If no route found between a source/destination pair, calculate the as-the-crow-flies distance, then use this speed to estimate duration.|
+|annotations |`duration` (default), `distance`, or `duration,distance`|Return the requested table or tables in response. |
+|fallback_speed|`double > 0`| If no route found between a source/destination pair, calculate the as-the-crow-flies distance, then use this speed to estimate duration.|
 |fallback_coordinate|`input` (default), or `snapped`| When using a `fallback_speed`, use the user-supplied coordinate (`input`), or the snapped location (`snapped`) for calculating distances.|
+|scale_factor|`double > 0`| Use in conjunction with `annotations=durations`. Scales the table `duration` values by this number.|
 
 Unlike other array encoded options, the length of `sources` and `destinations` can be **smaller or equal**
 to number of input locations;

docs/nodejs/api.md

@@ -131,6 +131,7 @@ tables. Optionally returns distance table.
     -   `options.approaches` **[Array](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array)?** Keep waypoints on curb side. Can be `null` (unrestricted, default) or `curb`.
     -   `options.fallback_speed` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)?** Replace `null` responses in result with as-the-crow-flies estimates based on `fallback_speed`.  Value is in metres/second.
     -   `options.fallback_coordinate` **[String](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String)?** Either `input` (default) or `snapped`.  If using a `fallback_speed`, use either the user-supplied coordinate (`input`), or the snapped coordinate (`snapped`) for calculating the as-the-crow-flies diestance between two points.
+    -   `options.scale_factor` **[Number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number)?** Multiply the table duration values in the table by this number for more controlled input into a route optimization solver.
 -   `callback` **[Function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function)**
 
 **Examples**

features/testbot/duration_matrix.feature

@@ -580,4 +580,96 @@ Feature: Basic Duration Matrix
             | a | 0  | 30 | 18 | 24 |
             | b | 30 | 0  | 12 | 18 |
             | f | 18 | 12 | 0  | 30 |
-            | 1 | 24 | 18 | 30 | 0  |
+            | 1 | 24 | 18 | 30 | 0  |
+
+    Scenario: Testbot - Travel time matrix of minimal network with scale factor
+         Given the query options
+            | scale_factor | 2 |
+
+        Given the node map
+            """
+            a b
+            """
+
+        And the ways
+            | nodes |
+            | ab    |
+
+        When I request a travel time matrix I should get
+            |   | a  | b  |
+            | a | 0  | 20 |
+            | b | 20 | 0  |
+
+    Scenario: Testbot - Test fallback speeds and scale factor
+        Given a grid size of 300 meters
+        Given the extract extra arguments "--small-component-size 4"
+        Given the query options
+            | scale_factor | 2 |
+            | fallback_speed | 5 |
+            | fallback_coordinate | snapped |
+
+        Given the node map
+            """
+            a b   f h 1
+            d e   g i
+            """
+
+        And the ways
+            | nodes |
+            | abeda |
+            | fhigf |
+
+        When I request a travel time matrix I should get
+            |   | a  | b  | f  | 1  |
+            | a | 0  | 60 | 36 | 48 |
+            | b | 60 | 0  | 24 | 36 |
+            | f | 36 | 24 | 0  | 60 |
+            | 1 | 48 | 36 | 60 | 0  |
+
+        When I request a travel time matrix I should get
+            |   | a  | b  | f  | 1  |
+            | a | 0  | 60 | 36 | 48 |
+
+        When I request a travel time matrix I should get
+            |   | a  |
+            | a | 0  |
+            | b | 60 |
+            | f | 36 |
+            | 1 | 48 |
+
+
+    Scenario: Testbot - Travel time matrix of minimal network with overflow scale factor
+        Given the query options
+            | scale_factor | 2147483647 |
+
+        Given the node map
+            """
+            a b
+            """
+
+        And the ways
+            | nodes |
+            | ab    |
+
+        When I request a travel time matrix I should get
+            |   | a           | b           |
+            | a | 0           | 214748364.6 |
+            | b | 214748364.6 | 0           |
+
+    Scenario: Testbot - Travel time matrix of minimal network with fraction scale factor
+         Given the query options
+            | scale_factor | 0.5 |
+
+        Given the node map
+            """
+            a b
+            """
+
+        And the ways
+            | nodes |
+            | ab    |
+
+        When I request a travel time matrix I should get
+            |   | a  | b  |
+            | a | 0  | 5  |
+            | b | 5  | 0  |

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;

src/engine/plugins/table.cpp

@@ -96,15 +96,16 @@ Status TablePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
     }
 
     // Scan table for null results - if any exist, replace with distance estimates
-    if (params.fallback_speed > 0)
+    if (params.fallback_speed > 0 || params.scale_factor > 0)
     {
         for (std::size_t row = 0; row < num_sources; row++)
         {
             for (std::size_t column = 0; column < num_destinations; column++)
             {
                 const auto &table_index = row * num_destinations + column;
                 BOOST_ASSERT(table_index < result_tables_pair.first.size());
-                if (result_tables_pair.first[table_index] == MAXIMAL_EDGE_DURATION)
+                if (params.fallback_speed > 0 &&
+                    result_tables_pair.first[table_index] == MAXIMAL_EDGE_DURATION)
                 {
                     const auto &source =
                         snapped_phantoms[params.sources.empty() ? row : params.sources[row]];
@@ -127,6 +128,23 @@ Status TablePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
                         result_tables_pair.second[table_index] = distance_estimate;
                     }
                 }
+                if (params.scale_factor > 0 && params.scale_factor != 1 &&
+                    result_tables_pair.first[table_index] != MAXIMAL_EDGE_DURATION &&
+                    result_tables_pair.first[table_index] != 0)
+                {
+                    EdgeDuration diff =
+                        MAXIMAL_EDGE_DURATION / result_tables_pair.first[table_index];
+
+                    if (params.scale_factor >= diff)
+                    {
+                        result_tables_pair.first[table_index] = MAXIMAL_EDGE_DURATION - 1;
+                    }
+                    else
+                    {
+                        result_tables_pair.first[table_index] = std::lround(
+                            result_tables_pair.first[table_index] * params.scale_factor);
+                    }
+                }
             }
         }
     }

src/server/service/table_service.cpp

@@ -61,6 +61,11 @@ std::string getWrongOptionHelp(const engine::api::TableParameters &parameters)
         help = "fallback_speed must be > 0";
     }
 
+    if (parameters.scale_factor <= 0)
+    {
+        help = "scale_factor must be > 0";
+    }
+
     return help;
 }
 } // anon. ns

test/nodejs/table.js

@@ -260,5 +260,23 @@ tables.forEach(function(annotation) {
         });
     });
 
+    test('table: ' + annotation + ' table in Monaco with invalid scale factor', function(assert) {
+        assert.plan(3);
+        var osrm = new OSRM({path: mld_data_path, algorithm: 'MLD'});
+        var options = {
+            coordinates: two_test_coordinates,
+            annotations: [annotation.slice(0,-1)],
+            scale_factor: -1
+        };
+
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /scale_factor must be > 0/, "should throw on invalid scale_factor value");
+
+        options.scale_factor = '-1';
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /scale_factor must be a number/, "should throw on invalid scale_factor value");
+
+        options.scale_factor = 0;
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /scale_factor must be > 0/, "should throw on invalid scale_factor value");
+
+    });
 });
 

unit_tests/server/parameters_parser.cpp

@@ -91,6 +91,10 @@ BOOST_AUTO_TEST_CASE(invalid_table_urls)
         49UL);
     BOOST_CHECK_EQUAL(testInvalidOptions<TableParameters>("1,2;3,4?fallback_coordinate=asdf"),
                       28UL);
+    BOOST_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&scale_factor=-1"), 28UL);
+    BOOST_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&scale_factor=0"), 28UL);
 }
 
 BOOST_AUTO_TEST_CASE(valid_route_hint)
@@ -565,6 +569,17 @@ BOOST_AUTO_TEST_CASE(valid_table_urls)
     BOOST_CHECK_EQUAL(result_7->annotations & TableParameters::AnnotationsType::Distance, true);
     CHECK_EQUAL_RANGE(reference_7.sources, result_7->sources);
     CHECK_EQUAL_RANGE(reference_7.destinations, result_7->destinations);
+
+    auto result_8 = parseParameters<TableParameters>("1,2;3,4?sources=all&destinations=all&"
+                                                     "annotations=duration&fallback_speed=1&"
+                                                     "fallback_coordinate=snapped&scale_factor=2");
+    BOOST_CHECK(result_8);
+    CHECK_EQUAL_RANGE(reference_1.sources, result_3->sources);
+    CHECK_EQUAL_RANGE(reference_1.destinations, result_3->destinations);
+    CHECK_EQUAL_RANGE(reference_1.bearings, result_3->bearings);
+    CHECK_EQUAL_RANGE(reference_1.radiuses, result_3->radiuses);
+    CHECK_EQUAL_RANGE(reference_1.approaches, result_3->approaches);
+    CHECK_EQUAL_RANGE(reference_1.coordinates, result_3->coordinates);
 }
 
 BOOST_AUTO_TEST_CASE(valid_match_urls)