Add style retriever for a geonode layer.

Author: ismailsunni

python/core/geonode/qgsgeonoderequest.sip

@@ -23,6 +23,18 @@ struct QgsServiceLayerDetail
   QString xyzURL;
 };
 
+struct QgsGeoNodeStyle
+{
+%TypeHeaderCode
+#include <qgsgeonoderequest.h>
+%End
+  QString id;
+  QString name;
+  QString title;
+  QDomDocument body;
+  QString styleUrl;
+};
+
 class QgsGeoNodeRequest : QObject
 {
 
@@ -44,6 +56,21 @@ class QgsGeoNodeRequest : QObject
  :rtype: list of QgsServiceLayerDetail
 %End
 
+    QList<QgsGeoNodeStyle> getStyles( QString layerName );
+%Docstring
+ :rtype: list of QgsGeoNodeStyle
+%End
+
+    QgsGeoNodeStyle getDefaultStyle( QString layerName );
+%Docstring
+ :rtype: QgsGeoNodeStyle
+%End
+
+    QgsGeoNodeStyle getStyle( QString styleID );
+%Docstring
+ :rtype: QgsGeoNodeStyle
+%End
+
     QStringList serviceUrls( QString serviceType );
 %Docstring
  :rtype: list of str

src/core/geonode/qgsgeonoderequest.cpp

@@ -70,6 +70,66 @@ QList<QgsServiceLayerDetail> QgsGeoNodeRequest::getLayers()
   return parseLayers( this->response() );
 }
 
+QgsGeoNodeStyle QgsGeoNodeRequest::getDefaultStyle( QString layerName )
+{
+  QgsGeoNodeStyle defaultStyle;
+  bool success = request( QStringLiteral( "/api/layers?name=" )  + layerName );
+  if ( !success )
+  {
+    return defaultStyle;
+  }
+
+  QJsonDocument jsonDocument = QJsonDocument::fromJson( this->response() );
+  QJsonObject jsonObject = jsonDocument.object();
+  QList<QVariant> layers = jsonObject.toVariantMap()["objects"].toList();
+  if ( layers.count() < 1 )
+  {
+    return defaultStyle;
+  }
+  QString defaultStyleUrl = layers[0].toMap()["default_style"].toString();
+
+  defaultStyle = retrieveStyle( defaultStyleUrl );
+
+  return defaultStyle;
+
+}
+
+QList<QgsGeoNodeStyle> QgsGeoNodeRequest::getStyles( QString layerName )
+{
+  QList<QgsGeoNodeStyle> geoNodeStyles;
+  bool success = request( QStringLiteral( "/api/styles?layer__name=" ) + layerName );
+  if ( !success )
+  {
+    return geoNodeStyles;
+  }
+
+  QJsonDocument jsonDocument = QJsonDocument::fromJson( this->response() );
+  QJsonObject jsobObject = jsonDocument.object();
+  QList<QVariant> styles = jsobObject.toVariantMap()["objects"].toList();
+
+  Q_FOREACH ( QVariant style, styles )
+  {
+    QVariantMap styleMap = style.toMap();
+    QString styleUrl = styleMap["resource_uri"].toString();
+    QgsGeoNodeStyle geoNodeStyle = retrieveStyle( styleUrl );
+    if ( !geoNodeStyle.name.isEmpty() )
+    {
+      geoNodeStyles.append( geoNodeStyle );
+    }
+  }
+
+  return geoNodeStyles;
+
+}
+
+QgsGeoNodeStyle QgsGeoNodeRequest::getStyle( QString styleID )
+{
+  QString endPoint = QStringLiteral( "/api/styles/" ) + styleID;
+
+  return retrieveStyle( endPoint );
+
+}
+
 void QgsGeoNodeRequest::replyProgress( qint64 bytesReceived, qint64 bytesTotal )
 {
   QString msg = tr( "%1 of %2 bytes of request downloaded." ).arg( bytesReceived ).arg( bytesTotal < 0 ? QStringLiteral( "unknown number of" ) : QString::number( bytesTotal ) );
@@ -298,6 +358,38 @@ QList<QgsServiceLayerDetail> QgsGeoNodeRequest::parseLayers( QByteArray layerRes
   return layers;
 }
 
+QgsGeoNodeStyle QgsGeoNodeRequest::retrieveStyle( QString styleUrl )
+{
+  QgsGeoNodeStyle geoNodeStyle;
+
+  bool success = request( styleUrl );
+  if ( !success )
+  {
+    return geoNodeStyle;
+  }
+  QJsonDocument jsonDocument = QJsonDocument::fromJson( this->response() );
+  QJsonObject jsonObject = jsonDocument.object();
+
+  geoNodeStyle.id = jsonObject.toVariantMap()["id"].toString();
+  geoNodeStyle.name = jsonObject.toVariantMap()["name"].toString();
+  geoNodeStyle.title = jsonObject.toVariantMap()["title"].toString();
+  geoNodeStyle.styleUrl = jsonObject.toVariantMap()["style_url"].toString();
+
+  success = request( geoNodeStyle.styleUrl );
+  if ( !success )
+  {
+    return geoNodeStyle;
+  }
+
+  success = geoNodeStyle.body.setContent( this->response() );
+  if ( !success )
+  {
+    return geoNodeStyle;
+  }
+
+  return geoNodeStyle;
+}
+
 QStringList QgsGeoNodeRequest::serviceUrls( QString serviceType )
 {
   QStringList urls;
@@ -393,7 +485,8 @@ bool QgsGeoNodeRequest::request( QString endPoint )
   abort();
   mIsAborted = false;
   QgsMessageLog::logMessage( mBaseUrl, tr( "GeoNode" ) );
-  QString url = mBaseUrl + endPoint;
+  // Handle case where the endpoint is full url
+  QString url = endPoint.startsWith( mBaseUrl ) ? endPoint : mBaseUrl + endPoint;
   QgsMessageLog::logMessage( url, tr( "GeoNode" ) );
   setProtocol( url.split( "://" )[0] );
   QUrl layerUrl( url );

src/core/geonode/qgsgeonoderequest.h

@@ -18,6 +18,7 @@
 #include "qgis.h"
 #include "qgis_core.h"
 #include <qnetworkreply.h>
+#include <QDomDocument>
 
 
 #include <QObject>
@@ -39,6 +40,20 @@ struct CORE_EXPORT QgsServiceLayerDetail
   QString xyzURL;
 };
 
+struct CORE_EXPORT QgsGeoNodeStyle
+{
+#ifdef SIP_RUN
+  % TypeHeaderCode
+#include <qgsgeonoderequest.h>
+  % End
+#endif
+  QString id;
+  QString name;
+  QString title;
+  QDomDocument body;
+  QString styleUrl;
+};
+
 class CORE_EXPORT QgsGeoNodeRequest : public QObject
 {
     Q_OBJECT
@@ -51,6 +66,12 @@ class CORE_EXPORT QgsGeoNodeRequest : public QObject
 
     QList<QgsServiceLayerDetail> getLayers();
 
+    QList<QgsGeoNodeStyle> getStyles( QString layerName );
+
+    QgsGeoNodeStyle getDefaultStyle( QString layerName );
+
+    QgsGeoNodeStyle getStyle( QString styleID );
+
     // Obtain list of unique URL in the geonode
     QStringList serviceUrls( QString serviceType );
 
@@ -71,6 +92,7 @@ class CORE_EXPORT QgsGeoNodeRequest : public QObject
 
   private:
     QList<QgsServiceLayerDetail> parseLayers( QByteArray layerResponse );
+    QgsGeoNodeStyle retrieveStyle( QString styleUrl );
 
   signals:
     //! \brief emit a signal to be caught by qgisapp and display a statusQString on status bar

tests/src/core/testqgsgeonodeconnection.cpp

@@ -15,14 +15,10 @@
 #include "qgstest.h"
 #include <QtTest/QtTest>
 
-#include <QtTest/QSignalSpy>
-#include <QString>
-#include <QMultiMap>
-#include <iostream>
-
-//#include "qgis_core.h"
 #include "qgsgeonodeconnection.h"
 #include "qgssettings.h"
+#include "qgsgeonoderequest.h"
+#include "qgslogger.h"
 
 /** \ingroup UnitTests
  * This is a unit test for the QgsGeoConnection class.
@@ -50,6 +46,9 @@ class TestQgsGeoNodeConnection: public QObject
     // Check if we can create geonode connection from database.
     void testCreation();
 
+    // Test API
+    void testStyleAPI();
+
   private:
     QString mGeoNodeConnectionName;
     QString mGeoNodeConnectionURL;
@@ -71,13 +70,13 @@ void TestQgsGeoNodeConnection::initTestCase()
 {
   std::cout << "CTEST_FULL_OUTPUT" << std::endl;
   mGeoNodeConnectionName = QStringLiteral( "ThisIsAGeoNodeConnection" );
-  mGeoNodeConnectionURL = QStringLiteral( "www.thisisageonodeurl.com" );
+  mGeoNodeConnectionURL = QStringLiteral( "http://www.thisisageonodeurl.com" );
   mDemoGeoNodeName = QStringLiteral( "Demo GeoNode" );
-  mDemoGeoNodeURL = QStringLiteral( "demo.geonode.org" );
+  mDemoGeoNodeURL = QStringLiteral( "http://demo.geonode.org" );
   mKartozaGeoNodeQGISServerName = QStringLiteral( "Staging Kartoza GeoNode QGIS Server" );
-  mKartozaGeoNodeQGISServerURL = QStringLiteral( "staging.geonode.kartoza.com" );
+  mKartozaGeoNodeQGISServerURL = QStringLiteral( "http://staging.geonode.kartoza.com" );
   mKartozaGeoNodeGeoServerName = QStringLiteral( "Staging Kartoza GeoNode GeoServer" );
-  mKartozaGeoNodeGeoServerURL = QStringLiteral( "staginggs.geonode.kartoza.com" );
+  mKartozaGeoNodeGeoServerURL = QStringLiteral( "http://staginggs.geonode.kartoza.com" );
 
   // Change it to skip remote testing
   mSkipRemoteTest = true;
@@ -122,5 +121,30 @@ void TestQgsGeoNodeConnection::testCreation()
   QVERIFY( newConnectionList.contains( mGeoNodeConnectionName ) );
 }
 
+// Test Layer API
+void TestQgsGeoNodeConnection::testStyleAPI()
+{
+  if ( !mSkipRemoteTest )
+  {
+    QSKIP( "Skip remote test for faster testing" );
+  }
+
+  QgsGeoNodeRequest geonodeRequest( mKartozaGeoNodeQGISServerURL, true );
+  QgsGeoNodeStyle defaultStyle = geonodeRequest.getDefaultStyle( QStringLiteral( "airports" ) );
+  QVERIFY( !defaultStyle.name.isEmpty() );
+  QVERIFY( defaultStyle.body.toString().startsWith( QStringLiteral( "<qgis" ) ) );
+  QVERIFY( defaultStyle.body.toString().contains( QStringLiteral( "</qgis>" ) ) );
+
+  QgsGeoNodeStyle geoNodeStyle = geonodeRequest.getStyle( "76" );
+  QVERIFY( !geoNodeStyle.name.isEmpty() );
+  QVERIFY( geoNodeStyle.body.toString().startsWith( QStringLiteral( "<qgis" ) ) );
+  QVERIFY( geoNodeStyle.body.toString().contains( QStringLiteral( "</qgis>" ) ) );
+
+  QList<QgsGeoNodeStyle> geoNodeStyles = geonodeRequest.getStyles( QStringLiteral( "airports" ) );
+  QgsDebugMsg( geoNodeStyles.count() );
+  QVERIFY( geoNodeStyles.count() == 2 );
+
+}
+
 QGSTEST_MAIN( TestQgsGeoNodeConnection )
 #include "testqgsgeonodeconnection.moc"