Allow 'unlimited' as value for certain flags

CHANGELOG.md

@@ -10,6 +10,7 @@
     - NodeJS:
       - CHANGED: Use node-api instead of NAN. [#6452](https://github.com/Project-OSRM/osrm-backend/pull/6452)
     - Misc:
+      - ADDED: Add support for "unlimited" to be passed as a value for the default-radius and max-matching-radius flags. [#6599](https://github.com/Project-OSRM/osrm-backend/pull/6599)
       - CHANGED: Allow -1.0 as unlimited for default_radius value. [#6599](https://github.com/Project-OSRM/osrm-backend/pull/6599)
       - CHANGED: Move vector in CSVFilesParser instead copying it. [#6470](https://github.com/Project-OSRM/osrm-backend/pull/6470)
       - REMOVED: Get rid of unused functions in util/json_util.hpp. [#6446](https://github.com/Project-OSRM/osrm-backend/pull/6446)

include/nodejs/node_osrm_support.hpp

@@ -317,9 +317,16 @@ inline engine_config_ptr argumentsToEngineConfig(const Napi::CallbackInfo &args)
         ThrowError(args.Env(), "max_alternatives must be an integral number");
         return engine_config_ptr();
     }
-    if (!default_radius.IsUndefined() && !default_radius.IsNumber())
+    if (!max_radius_map_matching.IsUndefined() && max_radius_map_matching.IsString() &&
+        max_radius_map_matching.ToString().Utf8Value() != "unlimited")
     {
-        ThrowError(args.Env(), "default_radius must be an integral number");
+        ThrowError(args.Env(), "max_radius_map_matching must be unlimited or an integral number");
+        return engine_config_ptr();
+    }
+    if (!default_radius.IsUndefined() && default_radius.IsString() &&
+        default_radius.ToString().Utf8Value() != "unlimited")
+    {
+        ThrowError(args.Env(), "default_radius must be unlimited or an integral number");
         return engine_config_ptr();
     }
 
@@ -337,10 +344,17 @@ inline engine_config_ptr argumentsToEngineConfig(const Napi::CallbackInfo &args)
         engine_config->max_results_nearest = max_results_nearest.ToNumber().Int32Value();
     if (max_alternatives.IsNumber())
         engine_config->max_alternatives = max_alternatives.ToNumber().Int32Value();
+
     if (max_radius_map_matching.IsNumber())
         engine_config->max_radius_map_matching = max_radius_map_matching.ToNumber().DoubleValue();
+    else if (max_radius_map_matching.IsString() &&
+             max_radius_map_matching.ToString().Utf8Value() == "unlimited")
+        engine_config->max_radius_map_matching = -1.0;
+
     if (default_radius.IsNumber())
         engine_config->default_radius = default_radius.ToNumber().DoubleValue();
+    else if (default_radius.IsString() && default_radius.ToString().Utf8Value() == "unlimited")
+        engine_config->default_radius = -1.0;
 
     return engine_config;
 }

src/tools/routed.cpp

@@ -71,6 +71,33 @@ std::istream &operator>>(std::istream &in, EngineConfig::Algorithm &algorithm)
 }
 } // namespace osrm::engine
 
+// overload validate for the double type to allow "unlimited" as an input
+namespace boost
+{
+void validate(boost::any &v, const std::vector<std::string> &values, double *, double)
+{
+    boost::program_options::validators::check_first_occurrence(v);
+    const std::string &s = boost::program_options::validators::get_single_string(values);
+
+    if (s == "unlimited")
+    {
+        v = -1.0;
+    }
+    else
+    {
+        try
+        {
+            v = std::stod(s);
+        }
+        catch (const std::invalid_argument &)
+        {
+            throw boost::program_options::validation_error(
+                boost::program_options::validation_error::invalid_option_value);
+        }
+    }
+}
+} // namespace boost
+
 // generate boost::program_options object for the routing part
 inline unsigned generateServerProgramOptions(const int argc,
                                              const char *argv[],

test/nodejs/index.js

@@ -118,6 +118,12 @@ test('constructor: takes a default_radius argument', function(assert) {
     assert.ok(osrm);
 });
 
+test('constructor: takes a default_radius unlimited argument', function(assert) {
+    assert.plan(1);
+    var osrm = new OSRM({algorithm: 'MLD', path: monaco_mld_path, default_radius: 'unlimited'});
+    assert.ok(osrm);
+});
+
 test('constructor: throws if default_radius is not a number', function(assert) {
     assert.plan(2);
     assert.throws(function() { new OSRM({algorithm: 'MLD', path: monaco_mld_path, default_radius: 'abc'}); }, /default_radius must be an integral number/, 'Does not accept string');
@@ -135,6 +141,7 @@ test('constructor: parses custom limits', function(assert) {
         max_locations_map_matching: 1,
         max_results_nearest: 1,
         max_alternatives: 1,
+        default_radius: 1
     });
     assert.ok(osrm);
 });
@@ -150,7 +157,8 @@ test('constructor: throws on invalid custom limits', function(assert) {
             max_locations_distance_table: false,
             max_locations_map_matching: 'a lot',
             max_results_nearest: null,
-            max_alternatives: '10'
+            max_alternatives: '10',
+            default_radius: '10'
         })
     });
 });