bump to rc 4

* Revert "Remove estimated_cells value in the response."

This reverts commit 364e35af06.

* Update changelog.

* fix linting

* adjust fallback_speed check

* change [].includes to [].indexOf !== -1 for compatibility with node 4

* change param name

* more cuke tests

* fix formatting

.travis.yml

@@ -13,6 +13,7 @@ notifications:
 branches:
   only:
     - master
+    - "5.20.1"
     # enable building tags
     - /^v\d+\.\d+(\.\d+)?(-\S*)?$/
 

CHANGELOG.md

@@ -1,4 +1,13 @@
-# UNRELEASED
+# 5.20.1 RC 4
+  - 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)
+      - ADDED: if `fallback_speed` is used, a new structure `fallback_speed_cells` will describe which cells contain estimated values [#5259](https://github.com/Project-OSRM/osrm-backend/pull/5259)
+    - 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)
+      - FIXED: only trigger `scale_factor` code to scan matrix when necessary. [#5303](https://github.com/Project-OSRM/osrm-backend/pull/5303)
+
+# 5.20.0
   - Changes from 5.19.0:
     - Table:
       - CHANGED: switch to pre-calculated distances for table responses for large speedup and 10% memory increase. [#5251](https://github.com/Project-OSRM/osrm-backend/pull/5251)
@@ -8,7 +17,6 @@
     - Features:
       - ADDED: direct mmapping of datafiles is now supported via the `--mmap` switch. [#5242](https://github.com/Project-OSRM/osrm-backend/pull/5242)
       - REMOVED: the previous `--memory_file` switch is now deprecated and will fallback to `--mmap` [#5242](https://github.com/Project-OSRM/osrm-backend/pull/5242)
-      - 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)
       - ADDED: Now publishing Node 10.x LTS binary modules [#5246](https://github.com/Project-OSRM/osrm-backend/pull/5246)
     - Windows:
       - FIXED: Windows builds again. [#5249](https://github.com/Project-OSRM/osrm-backend/pull/5249)

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;
@@ -283,6 +284,7 @@ curl 'http://router.project-osrm.org/table/v1/driving/13.388860,52.517037;13.397
   the i-th waypoint to the j-th waypoint. Values are given in meters. Can be `null` if no route between `i` and `j` can be found. 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.
 - `sources` array of `Waypoint` objects describing all sources in order
 - `destinations` array of `Waypoint` objects describing all destinations in order
+- `fallback_speed_cells` (optional) array of arrays containing `i,j` pairs indicating which cells contain estimated values based on `fallback_speed`.  Will be absent if `fallback_speed` is not used.
 
 In case of error the following `code`s are supported in addition to the general ones:
 
@@ -383,6 +385,10 @@ All other properties might be undefined.
       2361.73,
       0
     ]
+  ],
+  "fallback_speed_cells": [
+    [ 0, 1 ],
+    [ 1, 0 ]
   ]
 }
 ```

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**
@@ -156,6 +157,7 @@ Returns **[Object](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refer
                  Values are given in seconds.
 **`sources`**: array of [`Ẁaypoint`](#waypoint) objects describing all sources in order.
 **`destinations`**: array of [`Ẁaypoint`](#waypoint) objects describing all destinations in order.
+**`fallback_speed_cells`**: (optional) if `fallback_speed` is used, will be an array of arrays of `row,column` values, indicating which cells contain estimated values.
 
 ### tile
 

features/step_definitions/distance_matrix.js

@@ -3,22 +3,25 @@ var util = require('util');
 module.exports = function () {
     const durationsRegex = new RegExp(/^I request a travel time matrix I should get$/);
     const distancesRegex = new RegExp(/^I request a travel distance matrix I should get$/);
+    const estimatesRegex = new RegExp(/^I request a travel time matrix I should get estimates for$/);
 
     const DURATIONS_NO_ROUTE = 2147483647;     // MAX_INT
     const DISTANCES_NO_ROUTE = 3.40282e+38;    // MAX_FLOAT
 
     this.When(durationsRegex, function(table, callback) {tableParse.call(this, table, DURATIONS_NO_ROUTE, 'durations', callback);}.bind(this));
     this.When(distancesRegex, function(table, callback) {tableParse.call(this, table, DISTANCES_NO_ROUTE, 'distances', callback);}.bind(this));
+    this.When(estimatesRegex, function(table, callback) {tableParse.call(this, table, DISTANCES_NO_ROUTE, 'fallback_speed_cells', callback);}.bind(this));
 };
 
 const durationsParse = function(v) { return isNaN(parseInt(v)); };
 const distancesParse = function(v) { return isNaN(parseFloat(v)); };
+const estimatesParse = function(v) { return isNaN(parseFloat(v)); };
 
 function tableParse(table, noRoute, annotation, callback) {
 
-    const parse = annotation == 'distances' ? distancesParse : durationsParse;
+    const parse = annotation == 'distances' ? distancesParse : (annotation == 'durations' ? durationsParse : estimatesParse);
     const params = this.queryParams;
-    params.annotations = annotation == 'distances' ? 'distance' : 'duration';
+    params.annotations = ['durations','fallback_speed_cells'].indexOf(annotation) !== -1 ? 'duration' : 'distance';
 
     var tableRows = table.raw();
 
@@ -61,11 +64,26 @@ function tableParse(table, noRoute, annotation, callback) {
 
             var json = JSON.parse(response.body);
 
-            var result = json[annotation].map(row => {
-                var hashes = {};
-                row.forEach((v, i) => { hashes[tableRows[0][i+1]] = parse(v) ? '' : v; });
-                return hashes;
-            });
+            var result = {};
+            if (annotation === 'fallback_speed_cells') {
+                result = table.raw().map(row => row.map(() => ''));
+                json[annotation].forEach(pair => {
+                    result[pair[0]+1][pair[1]+1] = 'Y';
+                });
+                result = result.slice(1).map(row => {
+                    var hashes = {};
+                    row.slice(1).forEach((v,i) => {
+                        hashes[tableRows[0][i+1]] = v;
+                    });
+                    return hashes;
+                });
+            } else {
+                result = json[annotation].map(row => {
+                    var hashes = {};
+                    row.forEach((v, i) => { hashes[tableRows[0][i+1]] = parse(v) ? '' : v; });
+                    return hashes;
+                });
+            }
 
             var testRow = (row, ri, cb) => {
                 for (var k in result[ri]) {

features/testbot/distance_matrix.feature

@@ -596,7 +596,6 @@ Feature: Basic Distance Matrix
             | e | 198.8  | 298.9 | 499    | 710.3  | 0      | 1592.8 |
             | f | 596.4  | 696.5 | 896.6  | 1107.9 | 397.6  | 0      |
 
-
     Scenario: Testbot - Filling in noroutes with estimates (defaults to input coordinate location)
         Given a grid size of 300 meters
         Given the extract extra arguments "--small-component-size 4"
@@ -620,7 +619,18 @@ Feature: Basic Distance Matrix
             | f | 900.7  | 600.5  | 0     | 302.2  |
             | 1 | 1501.1 | 1200.9 | 300.2 | 0      |
 
-    Scenario: Testbot - Filling in noroutes with estimates - use input coordinate
+        When I request a travel distance matrix I should get
+            |   | a      | b      | f     | 1      |
+            | a | 0      | 300.2  | 900.7 | 1501.1 |
+
+        When I request a travel distance matrix I should get
+            |   | a      |
+            | a | 0      |
+            | b | 300.2  |
+            | f | 900.7  |
+            | 1 | 1501.1 |
+
+    Scenario: Testbot - Fise input coordinate
         Given a grid size of 300 meters
         Given the extract extra arguments "--small-component-size 4"
         Given the query options
@@ -644,6 +654,18 @@ Feature: Basic Distance Matrix
             | f | 900.7  | 600.5  | 0     | 302.2  |
             | 1 | 1501.1 | 1200.9 | 300.2 | 0      |
 
+        When I request a travel distance matrix I should get
+            |   | a      | b     | f     | 1      |
+            | a | 0      | 300.2 | 900.7 | 1501.1 |
+
+        When I request a travel distance matrix I should get
+            |   | a      |
+            | a | 0      |
+            | b | 300.2  |
+            | f | 900.7  |
+            | 1 | 1501.1 |
+
+
     Scenario: Testbot - Filling in noroutes with estimates - use snapped coordinate
         Given a grid size of 300 meters
         Given the extract extra arguments "--small-component-size 4"
@@ -668,22 +690,9 @@ Feature: Basic Distance Matrix
             | f | 900.7  | 600.5 | 0     | 302.2  |
             | 1 | 1200.9 | 900.7 | 300.2 | 0      |
 
-    Scenario: Testbot - Asymetric fallback_speed - more sources than destinations
-        Given a grid size of 300 meters
-        Given the extract extra arguments "--small-component-size 4"
-        Given the query options
-            | 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 distance matrix I should get
+            |   | a      | b     | f     | 1      |
+            | a | 0      | 300.2 | 900.7 | 1200.9 |
 
         When I request a travel distance matrix I should get
             |   | a      |
@@ -692,23 +701,3 @@ Feature: Basic Distance Matrix
             | f | 900.7  |
             | 1 | 1200.9 |
 
- Scenario: Testbot - Asymetric fallback_speed - more destinations than sources
-        Given a grid size of 300 meters
-        Given the extract extra arguments "--small-component-size 4"
-        Given the query options
-            | 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 distance matrix I should get
-            |   | a      | b     | f     | 1      |
-            | a | 0      | 300.2 | 900.7 | 1200.9 |

features/testbot/duration_matrix.feature

@@ -534,6 +534,35 @@ Feature: Basic Duration Matrix
             | f | 18 | 12 | 0  | 30 |
             | 1 | 30 | 24 | 30 | 0  |
 
+        When I request a travel time matrix I should get
+            |   | a  | b  | f  | 1  |
+            | a | 0  | 30 | 18 | 30 |
+
+        When I request a travel time matrix I should get
+            |   | a  |
+            | a | 0  |
+            | b | 30 |
+            | f | 18 |
+            | 1 | 30 |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+            | b |   |   | Y | Y |
+            | f | Y | Y |   |   |
+            | 1 | Y | Y |   |   |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a |
+            | a |   |
+            | b |   |
+            | f | Y |
+            | 1 | Y |
+
     Scenario: Testbot - Filling in noroutes with estimates - use input coordinate
         Given a grid size of 300 meters
         Given the extract extra arguments "--small-component-size 4"
@@ -558,6 +587,36 @@ Feature: Basic Duration Matrix
             | f | 18 | 12 | 0  | 30 |
             | 1 | 30 | 24 | 30 | 0  |
 
+        When I request a travel time matrix I should get
+            |   | a  | b  | f  | 1  |
+            | a | 0  | 30 | 18 | 30 |
+
+        When I request a travel time matrix I should get
+            |   | a  |
+            | a | 0  |
+            | b | 30 |
+            | f | 18 |
+            | 1 | 30 |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+            | b |   |   | Y | Y |
+            | f | Y | Y |   |   |
+            | 1 | Y | Y |   |   |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a |
+            | a |   |
+            | b |   |
+            | f | Y |
+            | 1 | Y |
+
+
     Scenario: Testbot - Filling in noroutes with estimates - use snapped coordinate
         Given a grid size of 300 meters
         Given the extract extra arguments "--small-component-size 4"
@@ -581,3 +640,138 @@ Feature: Basic Duration Matrix
             | b | 30 | 0  | 12 | 18 |
             | f | 18 | 12 | 0  | 30 |
             | 1 | 24 | 18 | 30 | 0  |
+
+        When I request a travel time matrix I should get
+            |   | a  | b  | f  | 1  |
+            | a | 0  | 30 | 18 | 24 |
+
+        When I request a travel time matrix I should get
+            |   | a  |
+            | a | 0  |
+            | b | 30 |
+            | f | 18 |
+            | 1 | 24 |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+            | b |   |   | Y | Y |
+            | f | Y | Y |   |   |
+            | 1 | Y | Y |   |   |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a |
+            | a |   |
+            | b |   |
+            | f | Y |
+            | 1 | Y |
+
+    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 |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+            | b |   |   | Y | Y |
+            | f | Y | Y |   |   |
+            | 1 | Y | Y |   |   |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a | b | f | 1 |
+            | a |   |   | Y | Y |
+
+        When I request a travel time matrix I should get estimates for
+            |   | a |
+            | a |   |
+            | b |   |
+            | f | Y |
+            | 1 | Y |
+
+
+     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_api.hpp

@@ -31,6 +31,15 @@ namespace api
 class TableAPI final : public BaseAPI
 {
   public:
+    struct TableCellRef
+    {
+        TableCellRef(const std::size_t &row, const std::size_t &column) : row{row}, column{column}
+        {
+        }
+        std::size_t row;
+        std::size_t column;
+    };
+
     TableAPI(const datafacade::BaseDataFacade &facade_, const TableParameters &parameters_)
         : BaseAPI(facade_, parameters_), parameters(parameters_)
     {
@@ -39,6 +48,7 @@ class TableAPI final : public BaseAPI
     virtual void
     MakeResponse(const std::pair<std::vector<EdgeDuration>, std::vector<EdgeDistance>> &tables,
                  const std::vector<PhantomNode> &phantoms,
+                 const std::vector<TableCellRef> &fallback_speed_cells,
                  util::json::Object &response) const
     {
         auto number_of_sources = parameters.sources.size();
@@ -77,6 +87,11 @@ class TableAPI final : public BaseAPI
                 MakeDistanceTable(tables.second, number_of_sources, number_of_destinations);
         }
 
+        if (parameters.fallback_speed != INVALID_FALLBACK_SPEED && parameters.fallback_speed > 0)
+        {
+            response.values["fallback_speed_cells"] = MakeEstimatesTable(fallback_speed_cells);
+        }
+
         response.values["code"] = "Ok";
     }
 
@@ -163,6 +178,20 @@ class TableAPI final : public BaseAPI
         return json_table;
     }
 
+    virtual util::json::Array
+    MakeEstimatesTable(const std::vector<TableCellRef> &fallback_speed_cells) const
+    {
+        util::json::Array json_table;
+        std::for_each(
+            fallback_speed_cells.begin(), fallback_speed_cells.end(), [&](const auto &cell) {
+                util::json::Array row;
+                row.values.push_back(util::json::Number(cell.row));
+                row.values.push_back(util::json::Number(cell.column));
+                json_table.values.push_back(std::move(row));
+            });
+        return json_table;
+    }
+
     const TableParameters &parameters;
 };
 

include/engine/api/table_parameters.hpp

@@ -59,7 +59,7 @@ struct TableParameters : public BaseParameters
 {
     std::vector<std::size_t> sources;
     std::vector<std::size_t> destinations;
-    double fallback_speed = 0;
+    double fallback_speed = INVALID_FALLBACK_SPEED;
 
     enum class FallbackCoordinateType
     {
@@ -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_}
+
     {
     }
 
@@ -132,7 +137,10 @@ struct TableParameters : public BaseParameters
         if (std::any_of(begin(destinations), end(destinations), not_in_range))
             return false;
 
-        if (fallback_speed < 0)
+        if (fallback_speed <= 0)
+            return false;
+
+        if (scale_factor <= 0)
             return false;
 
         return true;

include/nodejs/node_osrm_support.hpp

@@ -1192,7 +1192,7 @@ argumentsToTableParameter(const Nan::FunctionCallbackInfo<v8::Value> &args,
             Nan::ThrowError("fallback_speed must be a number");
             return table_parameters_ptr();
         }
-        else if (fallback_speed->NumberValue() < 0)
+        else if (fallback_speed->NumberValue() <= 0)
         {
             Nan::ThrowError("fallback_speed must be > 0");
             return table_parameters_ptr();
@@ -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;

include/util/typedefs.hpp

@@ -116,6 +116,7 @@ static const EdgeDuration MAXIMAL_EDGE_DURATION = std::numeric_limits<EdgeDurati
 static const EdgeDistance MAXIMAL_EDGE_DISTANCE = std::numeric_limits<EdgeDistance>::max();
 static const TurnPenalty INVALID_TURN_PENALTY = std::numeric_limits<TurnPenalty>::max();
 static const EdgeDistance INVALID_EDGE_DISTANCE = std::numeric_limits<EdgeDistance>::max();
+static const EdgeDistance INVALID_FALLBACK_SPEED = std::numeric_limits<double>::max();
 
 // FIXME the bitfields we use require a reduced maximal duration, this should be kept consistent
 // within the code base. For now we have to ensure that we don't case 30 bit to -1 and break any

package.json

@@ -1,6 +1,6 @@
 {
   "name": "osrm",
-  "version": "5.20.0-latest.1",
+  "version": "5.20.1-rc.4",
   "private": false,
   "description": "The Open Source Routing Machine is a high performance routing engine written in C++14 designed to run on OpenStreetMap data.",
   "dependencies": {

src/engine/plugins/table.cpp

@@ -95,8 +95,10 @@ Status TablePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
         return Error("NoTable", "No table found", result);
     }
 
+    std::vector<api::TableAPI::TableCellRef> estimated_pairs;
+
     // Scan table for null results - if any exist, replace with distance estimates
-    if (params.fallback_speed > 0)
+    if (params.fallback_speed != INVALID_FALLBACK_SPEED || params.scale_factor != 1)
     {
         for (std::size_t row = 0; row < num_sources; row++)
         {
@@ -104,7 +106,8 @@ Status TablePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
             {
                 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 != INVALID_FALLBACK_SPEED && 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]];
@@ -126,13 +129,32 @@ Status TablePlugin::HandleRequest(const RoutingAlgorithmsInterface &algorithms,
                     {
                         result_tables_pair.second[table_index] = distance_estimate;
                     }
+
+                    estimated_pairs.emplace_back(row, column);
+                }
+                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);
+                    }
                 }
             }
         }
     }
 
     api::TableAPI table_api{facade, params};
-    table_api.MakeResponse(result_tables_pair, snapped_phantoms, result);
+    table_api.MakeResponse(result_tables_pair, snapped_phantoms, estimated_pairs, result);
 
     return Status::Ok;
 }

src/server/service/table_service.cpp

@@ -56,11 +56,16 @@ std::string getWrongOptionHelp(const engine::api::TableParameters &parameters)
         help = "Number of coordinates needs to be at least two.";
     }
 
-    if (parameters.fallback_speed < 0)
+    if (parameters.fallback_speed <= 0)
     {
         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

@@ -234,7 +234,7 @@ tables.forEach(function(annotation) {
     });
 
     test('table: ' + annotation + ' table in Monaco without motorways', function(assert) {
-        assert.plan(1);
+        assert.plan(2);
         var osrm = new OSRM({path: mld_data_path, algorithm: 'MLD'});
         var options = {
             coordinates: two_test_coordinates,
@@ -243,11 +243,12 @@ tables.forEach(function(annotation) {
         };
         osrm.table(options, function(err, response) {
             assert.equal(response[annotation].length, 2);
+            assert.strictEqual(response.fallback_speed_cells, undefined);
         });
     });
 
     test('table: ' + annotation + ' table in Monaco with fallback speeds', function(assert) {
-        assert.plan(1);
+        assert.plan(2);
         var osrm = new OSRM({path: mld_data_path, algorithm: 'MLD'});
         var options = {
             coordinates: two_test_coordinates,
@@ -257,8 +258,50 @@ tables.forEach(function(annotation) {
         };
         osrm.table(options, function(err, response) {
             assert.equal(response[annotation].length, 2);
+            assert.equal(response['fallback_speed_cells'].length, 0);
         });
     });
 
+    test('table: ' + annotation + ' table in Monaco with invalid fallback speeds and fallback coordinates', function(assert) {
+        assert.plan(4);
+        var osrm = new OSRM({path: mld_data_path, algorithm: 'MLD'});
+        var options = {
+            coordinates: two_test_coordinates,
+            annotations: [annotation.slice(0,-1)],
+            fallback_speed: -1
+        };
+
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /fallback_speed must be > 0/, "should throw on invalid fallback_speeds");
+
+        options.fallback_speed = '10';
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /fallback_speed must be a number/, "should throw on invalid fallback_speeds");
+
+        options.fallback_speed = 10;
+        options.fallback_coordinate = 'bla';
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /fallback_coordinate' param must be one of \[input, snapped\]/, "should throw on invalid fallback_coordinate");
+
+        options.fallback_coordinate = 10;
+        assert.throws(()=>osrm.table(options, (err, res) => {}), /fallback_coordinate must be a string: \[input, snapped\]/, "should throw on invalid fallback_coordinate");
+
+    });
+
+    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 +91,23 @@ 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?fallback_coordinate=10"), 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_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&fallback_speed=0"),
+        28UL);
+    BOOST_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&fallback_speed=-1"),
+        28UL);
+    BOOST_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&fallback_speed=0"),
+        28UL);
+    BOOST_CHECK_EQUAL(
+        testInvalidOptions<TableParameters>("1,2;3,4?annotations=durations&fallback_speed=-1"),
+        28UL);
 }
 
 BOOST_AUTO_TEST_CASE(valid_route_hint)
@@ -565,6 +582,44 @@ 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);
+
+    TableParameters reference_8{};
+    reference_8.coordinates = coords_1;
+    auto result_8 =
+        parseParameters<TableParameters>("1,2;3,4?annotations=distance&fallback_speed=2.5");
+    BOOST_CHECK(result_8);
+    BOOST_CHECK_EQUAL(result_8->annotations & TableParameters::AnnotationsType::Distance, true);
+    CHECK_EQUAL_RANGE(reference_8.sources, result_8->sources);
+    CHECK_EQUAL_RANGE(reference_8.destinations, result_8->destinations);
+
+    TableParameters reference_9{};
+    reference_9.coordinates = coords_1;
+    auto result_9 = parseParameters<TableParameters>(
+        "1,2;3,4?annotations=distance&fallback_speed=2.5&fallback_coordinate=input");
+    BOOST_CHECK(result_9);
+    BOOST_CHECK_EQUAL(result_9->annotations & TableParameters::AnnotationsType::Distance, true);
+    CHECK_EQUAL_RANGE(reference_9.sources, result_9->sources);
+    CHECK_EQUAL_RANGE(reference_9.destinations, result_9->destinations);
+
+    TableParameters reference_10{};
+    reference_10.coordinates = coords_1;
+    auto result_10 = parseParameters<TableParameters>(
+        "1,2;3,4?annotations=distance&fallback_speed=20&fallback_coordinate=snapped");
+    BOOST_CHECK(result_10);
+    BOOST_CHECK_EQUAL(result_10->annotations & TableParameters::AnnotationsType::Distance, true);
+    CHECK_EQUAL_RANGE(reference_10.sources, result_10->sources);
+    CHECK_EQUAL_RANGE(reference_10.destinations, result_10->destinations);
+
+    auto result_11 = parseParameters<TableParameters>("1,2;3,4?sources=all&destinations=all&"
+                                                      "annotations=duration&fallback_speed=1&"
+                                                      "fallback_coordinate=snapped&scale_factor=2");
+    BOOST_CHECK(result_11);
+    CHECK_EQUAL_RANGE(reference_1.sources, result_11->sources);
+    CHECK_EQUAL_RANGE(reference_1.destinations, result_11->destinations);
+    CHECK_EQUAL_RANGE(reference_1.bearings, result_11->bearings);
+    CHECK_EQUAL_RANGE(reference_1.radiuses, result_11->radiuses);
+    CHECK_EQUAL_RANGE(reference_1.approaches, result_11->approaches);
+    CHECK_EQUAL_RANGE(reference_1.coordinates, result_11->coordinates);
 }
 
 BOOST_AUTO_TEST_CASE(valid_match_urls)