Add routing support for the mapbox geoservice plugin

This patch adds routing support for the mapbox plugin

Change-Id: Ibaf9d9d8a845b49cb8a6fc0d3530ffe57f4989db
Reviewed-by: Alex Blasche <alexander.blasche@theqtcompany.com>

7 files changed, 518 insertions, 7 deletions

diff --git a/src/plugins/geoservices/mapbox/mapbox.pro b/src/plugins/geoservices/mapbox/mapbox.pro
index e4601500..ea011131 100644
--- a/src/plugins/geoservices/mapbox/mapbox.pro
+++ b/src/plugins/geoservices/mapbox/mapbox.pro
@@ -7,14 +7,18 @@ HEADERS += \
     qgeotiledmappingmanagerenginemapbox.h \
     qgeotilefetchermapbox.h \
     qgeomapreplymapbox.h \
-    qgeofiletilecachemapbox.h
+    qgeofiletilecachemapbox.h \
+    qgeoroutingmanagerenginemapbox.h \
+    qgeoroutereplymapbox.h
 
 SOURCES += \
     qgeoserviceproviderpluginmapbox.cpp \
     qgeotiledmappingmanagerenginemapbox.cpp \
     qgeotilefetchermapbox.cpp \
     qgeomapreplymapbox.cpp \
-    qgeofiletilecachemapbox.cpp
+    qgeofiletilecachemapbox.cpp \
+    qgeoroutingmanagerenginemapbox.cpp \
+    qgeoroutereplymapbox.cpp
 
 OTHER_FILES += \
     mapbox_plugin.json
diff --git a/src/plugins/geoservices/mapbox/mapbox_plugin.json b/src/plugins/geoservices/mapbox/mapbox_plugin.json
index 0b8d08af..f886458f 100644
--- a/src/plugins/geoservices/mapbox/mapbox_plugin.json
+++ b/src/plugins/geoservices/mapbox/mapbox_plugin.json
@@ -4,6 +4,7 @@
     "Version": 100,
     "Experimental": false,
     "Features": [
-        "OnlineMappingFeature"
+        "OnlineMappingFeature",
+        "OnlineRoutingFeature"
     ]
 }
diff --git a/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.cpp b/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.cpp
new file mode 100644
index 00000000..4c98412b
--- /dev/null
+++ b/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.cpp
@@ -0,0 +1,231 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Vlad Seryakov <vseryakov@gmail.com>
+** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgeoroutereplymapbox.h"
+
+#include <QtCore/QJsonDocument>
+#include <QtCore/QJsonObject>
+#include <QtCore/QJsonArray>
+#include <QtLocation/QGeoRouteSegment>
+#include <QtLocation/QGeoManeuver>
+
+QT_BEGIN_NAMESPACE
+
+static QList<QGeoCoordinate> parsePolyline(const QString &line)
+{
+    QList<QGeoCoordinate> path;
+    QByteArray data(line.toLocal8Bit());
+
+    int mode = 0, shift = 0, value = 0, coord[2] = {0, 0};
+    for (int i = 0; i < data.length(); ++i) {
+        int c = data.at(i) - 63;
+        value |= (c & 0x1f) << shift;
+        shift += 5;
+        if (c & 0x20) continue;
+        coord[mode] += (value & 1) ? ~(value >> 1) : (value >> 1);
+        if (mode) path.append(QGeoCoordinate((double)coord[0]/1e5, (double)coord[1]/1e5));
+        mode = 1 - mode;
+        value = shift = 0;
+    }
+    return path;
+}
+
+static QList<QGeoCoordinate> parseGeometry(const QJsonValue &geometry)
+{
+    QList<QGeoCoordinate> path;
+    if (geometry.isString()) path = parsePolyline(geometry.toString());
+    if (geometry.isObject()) {
+        QJsonArray coords = geometry.toObject().value(QStringLiteral("coordinates")).toArray();
+        for (int i = 0; i < coords.count(); i++) {
+            QJsonArray coord = coords.at(i).toArray();
+            if (coord.count() != 2) continue;
+            path.append(QGeoCoordinate(coord.at(1).toDouble(), coord.at(0).toDouble()));
+        }
+    }
+    return path;
+}
+
+QGeoRouteReplyMapbox::QGeoRouteReplyMapbox(QNetworkReply *reply, const QGeoRouteRequest &request,
+                                     QObject *parent)
+:   QGeoRouteReply(request, parent), m_reply(reply)
+{
+    connect(m_reply, SIGNAL(finished()), this, SLOT(networkReplyFinished()));
+    connect(m_reply, SIGNAL(error(QNetworkReply::NetworkError)),
+            this, SLOT(networkReplyError(QNetworkReply::NetworkError)));
+}
+
+QGeoRouteReplyMapbox::~QGeoRouteReplyMapbox()
+{
+    if (m_reply)
+        m_reply->deleteLater();
+}
+
+void QGeoRouteReplyMapbox::abort()
+{
+    if (!m_reply)
+        return;
+
+    m_reply->abort();
+
+    m_reply->deleteLater();
+    m_reply = 0;
+}
+
+static QGeoRoute constructRoute(const QJsonObject &obj)
+{
+    QGeoRoute route;
+    route.setDistance(obj.value(QStringLiteral("distance")).toDouble());
+    route.setTravelTime(obj.value(QStringLiteral("duration")).toDouble());
+
+    QList<QGeoCoordinate> path = parseGeometry(obj.value(QStringLiteral("geometry")));
+    route.setPath(path);
+
+    QGeoRouteSegment firstSegment, lastSegment;
+    QJsonArray legs = obj.value(QStringLiteral("legs")).toArray();
+
+    for (int i = 0; i < legs.count(); i++) {
+        QJsonObject leg = legs.at(i).toObject();
+        QJsonArray steps = leg.value("steps").toArray();
+
+        for (int j = 0; j < steps.count(); j++) {
+            QJsonObject step = steps.at(j).toObject();
+            QJsonObject stepManeuver = step.value("maneuver").toObject();
+
+            QGeoRouteSegment segment;
+            segment.setDistance(step.value("distance").toDouble());
+            segment.setTravelTime(step.value(QStringLiteral("duration")).toDouble());
+
+            QGeoManeuver maneuver;
+            maneuver.setDistanceToNextInstruction(step.value("distance").toDouble());
+            maneuver.setInstructionText(stepManeuver.value("instruction").toString());
+            maneuver.setTimeToNextInstruction(step.value(QStringLiteral("duration")).toDouble());
+            QJsonArray location = stepManeuver.value(QStringLiteral("location")).toArray();
+            if (location.count() > 1)
+                maneuver.setPosition(QGeoCoordinate(location.at(0).toDouble(), location.at(1).toDouble()));
+
+            QString modifier = stepManeuver.value("modifier").toString();
+            int bearing1 = stepManeuver.value("bearing_before").toInt();
+            int bearing2 = stepManeuver.value("bearing_after").toInt();
+
+            if (modifier == "straight")
+                maneuver.setDirection(QGeoManeuver::DirectionForward);
+            else if (modifier == "slight right")
+                maneuver.setDirection(QGeoManeuver::DirectionLightRight);
+            else if (modifier == "right")
+                maneuver.setDirection(QGeoManeuver::DirectionRight);
+            else if (modifier == "sharp right")
+                maneuver.setDirection(QGeoManeuver::DirectionHardRight);
+            else if (modifier == "uturn")
+                maneuver.setDirection(bearing2 - bearing1 > 180 ? QGeoManeuver::DirectionUTurnLeft : QGeoManeuver::DirectionUTurnRight);
+            else if (modifier == "sharp left")
+                maneuver.setDirection(QGeoManeuver::DirectionHardLeft);
+            else if (modifier == "left")
+                maneuver.setDirection(QGeoManeuver::DirectionLeft);
+            else if (modifier == "slight left")
+                maneuver.setDirection(QGeoManeuver::DirectionLightLeft);
+            else
+                maneuver.setDirection(QGeoManeuver::NoDirection);
+
+            segment.setManeuver(maneuver);
+            segment.setPath(parseGeometry(step.value(QStringLiteral("geometry"))));
+
+            if (!firstSegment.isValid()) firstSegment = segment;
+            if (lastSegment.isValid()) lastSegment.setNextRouteSegment(segment);
+            lastSegment = segment;
+        }
+    }
+    route.setFirstRouteSegment(firstSegment);
+    return route;
+}
+
+void QGeoRouteReplyMapbox::networkReplyFinished()
+{
+    if (!m_reply)
+        return;
+
+    if (m_reply->error() != QNetworkReply::NoError) {
+        setError(QGeoRouteReply::CommunicationError, m_reply->errorString());
+        m_reply->deleteLater();
+        m_reply = 0;
+        return;
+    }
+
+    QJsonDocument document = QJsonDocument::fromJson(m_reply->readAll());
+    if (document.isObject()) {
+        QJsonObject object = document.object();
+
+        QString status = object.value(QStringLiteral("code")).toString();
+        if (status != QStringLiteral("Ok")) {
+            setError(QGeoRouteReply::UnknownError, object.value(QStringLiteral("message")).toString());
+            m_reply->deleteLater();
+            m_reply = 0;
+            return;
+        }
+
+        QList<QGeoRoute> list;
+        QJsonArray routes = object.value(QStringLiteral("routes")).toArray();
+        for (int i = 0; i < routes.count(); i++) {
+            QGeoRoute route = constructRoute(routes.at(i).toObject());
+            list.append(route);
+        }
+        setRoutes(list);
+        setFinished(true);
+    } else {
+        setError(QGeoRouteReply::ParseError, QStringLiteral("Couldn't parse json."));
+    }
+
+    m_reply->deleteLater();
+    m_reply = 0;
+}
+
+void QGeoRouteReplyMapbox::networkReplyError(QNetworkReply::NetworkError error)
+{
+    Q_UNUSED(error)
+
+    if (!m_reply)
+        return;
+
+    setError(QGeoRouteReply::CommunicationError, m_reply->errorString());
+
+    m_reply->deleteLater();
+    m_reply = 0;
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.h b/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.h
new file mode 100644
index 00000000..9df45ac4
--- /dev/null
+++ b/src/plugins/geoservices/mapbox/qgeoroutereplymapbox.h
@@ -0,0 +1,71 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Vlad Seryakov <vseryakov@gmail.com>
+** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGEOROUTEREPLYMAPBOX_H
+#define QGEOROUTEREPLYMAPBOX_H
+
+#include <QtNetwork/QNetworkReply>
+#include <QtLocation/QGeoRouteReply>
+
+QT_BEGIN_NAMESPACE
+
+class QGeoRouteReplyMapbox : public QGeoRouteReply
+{
+    Q_OBJECT
+
+public:
+    explicit QGeoRouteReplyMapbox(QObject *parent = 0);
+    QGeoRouteReplyMapbox(QNetworkReply *reply, const QGeoRouteRequest &request, QObject *parent = 0);
+    ~QGeoRouteReplyMapbox();
+
+    void abort() Q_DECL_OVERRIDE;
+
+private Q_SLOTS:
+    void networkReplyFinished();
+    void networkReplyError(QNetworkReply::NetworkError error);
+
+private:
+    QNetworkReply *m_reply;
+};
+
+QT_END_NAMESPACE
+
+#endif // QGEOROUTEREPLYMAPBOX_H
+
diff --git a/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.cpp b/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.cpp
new file mode 100644
index 00000000..d6ef8f0a
--- /dev/null
+++ b/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.cpp
@@ -0,0 +1,122 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Vlad Seryakov <vseryakov@gmail.com>
+** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qgeoroutingmanagerenginemapbox.h"
+#include "qgeoroutereplymapbox.h"
+
+#include <QtCore/QUrlQuery>
+#include <QtCore/QDebug>
+
+QT_BEGIN_NAMESPACE
+
+QGeoRoutingManagerEngineMapbox::QGeoRoutingManagerEngineMapbox(const QVariantMap &parameters,
+                                                         QGeoServiceProvider::Error *error,
+                                                         QString *errorString)
+    : QGeoRoutingManagerEngine(parameters),
+      m_networkManager(new QNetworkAccessManager(this)),
+      m_userAgent("Qt Location based application")
+{
+    if (parameters.contains(QStringLiteral("mapbox.useragent"))) {
+        m_userAgent = parameters.value(QStringLiteral("mapbox.useragent")).toString().toLatin1();
+    }
+
+    if (parameters.contains(QStringLiteral("mapbox.access_token"))) {
+        m_accessToken = parameters.value(QStringLiteral("mapbox.access_token")).toString();
+    }
+
+    *error = QGeoServiceProvider::NoError;
+    errorString->clear();
+}
+
+QGeoRoutingManagerEngineMapbox::~QGeoRoutingManagerEngineMapbox()
+{
+}
+
+QGeoRouteReply* QGeoRoutingManagerEngineMapbox::calculateRoute(const QGeoRouteRequest &request)
+{
+    QNetworkRequest networkRequest;
+    networkRequest.setRawHeader("User-Agent", m_userAgent);
+
+    QString url("https://api.mapbox.com/directions/v5/mapbox/");
+
+    QGeoRouteRequest::TravelModes travelModes = request.travelModes();
+    if (travelModes.testFlag(QGeoRouteRequest::PedestrianTravel))
+        url += "walking/";
+    else
+    if (travelModes.testFlag(QGeoRouteRequest::BicycleTravel))
+        url += "cycling/";
+    else
+    if (travelModes.testFlag(QGeoRouteRequest::CarTravel))
+        url += "driving/";
+
+    foreach (const QGeoCoordinate &c, request.waypoints()) {
+        url += QString("%1,%2;").arg(c.longitude()).arg(c.latitude());
+    }
+    if (url.right(1) == ";") url.chop(1);
+    url += QString("?steps=true&overview=full&geometries=geojson&access_token=%1").arg(m_accessToken);
+
+    networkRequest.setUrl(QUrl(url));
+
+    QNetworkReply *reply = m_networkManager->get(networkRequest);
+    QGeoRouteReplyMapbox *routeReply = new QGeoRouteReplyMapbox(reply, request, this);
+
+    connect(routeReply, SIGNAL(finished()), this, SLOT(replyFinished()));
+    connect(routeReply, SIGNAL(error(QGeoRouteReply::Error,QString)),
+            this, SLOT(replyError(QGeoRouteReply::Error,QString)));
+
+    return routeReply;
+}
+
+void QGeoRoutingManagerEngineMapbox::replyFinished()
+{
+    QGeoRouteReply *reply = qobject_cast<QGeoRouteReply *>(sender());
+    if (reply)
+        emit finished(reply);
+}
+
+void QGeoRoutingManagerEngineMapbox::replyError(QGeoRouteReply::Error errorCode,
+                                             const QString &errorString)
+{
+    QGeoRouteReply *reply = qobject_cast<QGeoRouteReply *>(sender());
+    if (reply)
+        emit error(reply, errorCode, errorString);
+}
+
+QT_END_NAMESPACE
diff --git a/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.h b/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.h
new file mode 100644
index 00000000..5b440147
--- /dev/null
+++ b/src/plugins/geoservices/mapbox/qgeoroutingmanagerenginemapbox.h
@@ -0,0 +1,76 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Vlad Seryakov <vseryakov@gmail.com>
+** Copyright (C) 2016 Aaron McCarthy <mccarthy.aaron@gmail.com>
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtLocation module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGEOROUTINGMANAGERENGINEMAPBOX_H
+#define QGEOROUTINGMANAGERENGINEMAPBOX_H
+
+#include <QtLocation/QGeoServiceProvider>
+#include <QtLocation/QGeoRoutingManagerEngine>
+
+QT_BEGIN_NAMESPACE
+
+class QNetworkAccessManager;
+
+class QGeoRoutingManagerEngineMapbox : public QGeoRoutingManagerEngine
+{
+    Q_OBJECT
+
+public:
+    QGeoRoutingManagerEngineMapbox(const QVariantMap &parameters,
+                                QGeoServiceProvider::Error *error,
+                                QString *errorString);
+    ~QGeoRoutingManagerEngineMapbox();
+
+    QGeoRouteReply *calculateRoute(const QGeoRouteRequest &request);
+
+private Q_SLOTS:
+    void replyFinished();
+    void replyError(QGeoRouteReply::Error errorCode, const QString &errorString);
+
+private:
+    QNetworkAccessManager *m_networkManager;
+    QByteArray m_userAgent;
+    QString m_accessToken;
+};
+
+QT_END_NAMESPACE
+
+#endif // QGEOROUTINGMANAGERENGINEOSM_H
+
diff --git a/src/plugins/geoservices/mapbox/qgeoserviceproviderpluginmapbox.cpp b/src/plugins/geoservices/mapbox/qgeoserviceproviderpluginmapbox.cpp
index 8638ad91..4bc8d7b9 100644
--- a/src/plugins/geoservices/mapbox/qgeoserviceproviderpluginmapbox.cpp
+++ b/src/plugins/geoservices/mapbox/qgeoserviceproviderpluginmapbox.cpp
@@ -36,6 +36,7 @@
 
 #include "qgeoserviceproviderpluginmapbox.h"
 #include "qgeotiledmappingmanagerenginemapbox.h"
+#include "qgeoroutingmanagerenginemapbox.h"
 
 #include <QtLocation/private/qgeotiledmappingmanagerengine_p.h>
 
@@ -69,11 +70,16 @@ QGeoMappingManagerEngine *QGeoServiceProviderFactoryMapbox::createMappingManager
 QGeoRoutingManagerEngine *QGeoServiceProviderFactoryMapbox::createRoutingManagerEngine(
     const QVariantMap &parameters, QGeoServiceProvider::Error *error, QString *errorString) const
 {
-    Q_UNUSED(parameters)
-    Q_UNUSED(error)
-    Q_UNUSED(errorString)
+    const QString accessToken = parameters.value(QStringLiteral("mapbox.access_token")).toString();
 
-    return 0;
+    if (!accessToken.isEmpty()) {
+        return new QGeoRoutingManagerEngineMapbox(parameters, error, errorString);
+    } else {
+        *error = QGeoServiceProvider::MissingRequiredParameterError;
+        *errorString = tr("Mapbox plugin requires 'mapbox.access_token' parameters.\n"
+                          "Please visit https://www.mapbox.com");
+        return 0;
+    }
 }
 
 QPlaceManagerEngine *QGeoServiceProviderFactoryMapbox::createPlaceManagerEngine(