Merge pull request #20 from leon-thomm/ryven-console

A prototype for a GUIless Ryven version (currently called Ryven Console) is now included. Ryven Console is used to run Ryven flows without Qt (f.ex. on the server) much faster than in Ryven itself. Very useful for time-intensive processing. Testing and showcasing can be done in Ryven while the actual computation can be done without visual interface in the cloud.
There are rules for using Ryven Console, one **cannot** just run a Ryven flow in the console application. But it is possible and not difficult to create nodes that work with Ryven Console. I will add an explanation to the docs once it is part of an official release.

Ryven/custom_src/MainWindow.py

@@ -298,7 +298,7 @@ def parse_nodes(self, j_str, package_path, package_name):
         j_obj = json.loads(j_str, strict=False)
 
         Debugger.debug(j_obj['type'])
-        if j_obj['type'] != 'vyScriptFP nodes package':
+        if j_obj['type'] != 'Ryven nodes package' and j_obj['type'] != 'vyScriptFP nodes package':  # old syntax
             return
 
         # package_title = j_obj['title']

Ryven/custom_src/NodeInstance.py

@@ -94,8 +94,9 @@ def initialized(self):
             if self.main_widget:
                 try:
                     self.main_widget.set_data(self.init_config['main widget data'])
-                except KeyError:
-                    pass
+                except Exception as e:
+                    print('Exception while setting data in', self.parent_node.title, 'NodeInstance\'s main widget:', e,
+                          ' (was this intended?)')
 
             self.special_actions = self.set_special_actions_data(self.init_config['special actions'])
             self.temp_state_data = self.init_config['state data']
@@ -104,7 +105,11 @@ def initialized(self):
 
         # LOADING DATA
         if self.temp_state_data is not None:
-            self.set_data(self.temp_state_data)
+            try:
+                self.set_data(self.temp_state_data)
+            except Exception as e:
+                print('Exception while setting data in', self.parent_node.title, 'NodeInstance:', e,
+                      ' (was this intended?)')
 
 
         self.initializing = False
@@ -243,7 +248,7 @@ def set_output_val(self, index, val):
         self.outputs[index].set_val(val)
 
     def data_outputs_updated(self):
-        """Sends update signals to all data outputs causing connected NIs to update."""
+        """(outdated!) Sends update signals to all data outputs causing connected NIs to update."""
 
         Debugger.debug('updating data outputs in', self.parent_node.title)
         for o in self.outputs:

Ryven/custom_src/PortInstance.py

@@ -12,9 +12,6 @@
 
 
 class PortInstance(QGraphicsGridLayout):
-    """The PortInstance class represents input-as well as output-instances of a NI. It wasn't really necessary yet, but
-    I will probably subclass it later into InputPortInstance and OutputPortInstance - so far both are just
-    PortInstances."""
 
     def __init__(self, parent_node_instance, direction, type_='', label_str='',
                  widget_name=None, widget_pos=''):
@@ -58,7 +55,7 @@ def update(self):
 
 
     def set_val(self, val):
-        """applies on INPUT; called NI internally"""
+        """applies on OUTPUT; called NI internally"""
         Debugger.debug('setting value of', self.direction, 'port of', self.parent_node_instance.parent_node.title,
                             'NodeInstance to', val)
 
@@ -129,7 +126,11 @@ def __init__(self, parent_node_instance, type_='', label_str='',
 
         if config_data is not None:
             self.create_widget()
-            self.widget.set_data(config_data)
+            try:
+                self.widget.set_data(config_data)
+            except Exception as e:
+                print('Exception while setting data in', self.parent_node_instance.parent_node.title,
+                      'NodeInstance\'s input widget:', e, ' (was this intended?)')
         else:
             self.create_widget()
 

Ryven/custom_src/tests.py

@@ -1,37 +1,85 @@
-import sys
-import types
-import inspect
-from optparse import OptionParser
-import random
-import math
-import pickle
-import os
-from pyowm import OWM
-import librosa
+# import sys
+# import types
+# import inspect
+# from optparse import OptionParser
+# import random
+# import math
+# import pickle
+# import os
+# from pyowm import OWM
+# import librosa
 
 from PySide2.QtWidgets import QMainWindow, QApplication, QWidget, QVBoxLayout, QPlainTextEdit, QGraphicsView, QGraphicsScene, QGraphicsProxyWidget, QAction, QMenu
 from PySide2.QtGui import QFont, QColor, QImage, QPainter, QPen, QBrush
 from PySide2.QtCore import Qt, QRectF
 
 # Beat tracking example
-import librosa
+# import librosa
 
 
-if __name__ == '__main__':
-    print('asdf')
-    # 1. Get the file path to an included audio example
-    filename = librosa.example('nutcracker')
-    print('asdf')
+class PlaceholderAttributeException(Exception):
+    pass
+
+
+class Nope:
+    pass
+
+
+def placeholder_method(*args):
+    pass
+
+class PlaceholderWidget:
+    # def __getattr__(self, item):
+    #     print('getting attribute', item)
+    #     if not hasattr(self, item):
+    #         raise PlaceholderAttributeException('nope')
+    #     else:
+    #         return super(PlaceholderWidget, self).__getattr__(item)
 
-    # 2. Load the audio as a waveform `y`
-    #    Store the sampling rate as `sr`
-    y, sr = librosa.load(filename)
-    print('asdf')
+    def y(self):
+        return 'y!'
 
-    # 3. Run the default beat tracker
-    tempo, beat_frames = librosa.beat.beat_track(y=y, sr=sr)
+    def __getattr__(self, item):
+        print('getting attribute:', item)
+
+        def method(*args):
+            print('unknown method used:', item)
+
+        return method
+
+    def __setattr__(self, key, value):
+        print('setting attr', key, 'to', value)
+        print(hasattr(self, key))
+        if not hasattr(self, key):
+            return
+        super(PlaceholderWidget, self).__setattr__(key, value)
+
+
+if __name__ == '__main__':
+    pw = PlaceholderWidget()
+    print('1')
+    pw.x = 10
+    print(pw.x)
+    print('2')
+    print(pw.y())
+    pw.foo(15)
+    print('3')
 
-    print('Estimated tempo: {:.2f} beats per minute'.format(tempo))
 
-    # 4. Convert the frame indices of beat events into timestamps
-    beat_times = librosa.frames_to_time(beat_frames, sr=sr)
+    # print('asdf')
+    # # 1. Get the file path to an included audio example
+    # filename = librosa.example('nutcracker')
+    # print('asdf')
+    #
+    # # 2. Load the audio as a waveform `y`
+    # #    Store the sampling rate as `sr`
+    # y, sr = librosa.load(filename)
+    # print('asdf')
+    #
+    # # 3. Run the default beat tracker
+    # tempo, beat_frames = librosa.beat.beat_track(y=y, sr=sr)
+    #
+    # print('Estimated tempo: {:.2f} beats per minute'.format(tempo))
+    #
+    # # 4. Convert the frame indices of beat events into timestamps
+    # beat_times = librosa.frames_to_time(beat_frames, sr=sr)

Ryven_Console/NIENV.py

@@ -0,0 +1,6 @@
+"""This file automatically imports all requirements for custom NodeInstances, so that they only need to import this
+file. This file should lie in the same location as Ryven.py in order to be able to get imported directly."""
+
+from custom_src.NodeInstance import NodeInstance
+from custom_src.Node import Node
+from custom_src.retain import M