Class: Wf::Workflow

Inherits:
ApplicationRecord show all
Defined in:
app/models/wf/workflow.rb

Instance Method Summary collapse

Instance Method Details

#do_validate! ⇒ Object

TODO: can from start place to end place todo: remove color hex to const.



40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
 
# File 'app/models/wf/workflow.rb', line 40

def do_validate!
  msgs = []
  start_place = places.start.first
  end_place   = places.end.first
  msgs << "must have start place" if start_place.blank?
  msgs << "must have only one start place" if places.start.count > 1
  msgs << "must have end place" if end_place.blank?
  msgs << "must have only one end place" if places.end.count > 1
  msgs << "must not have discrete transition" if transitions.any? { |t| !t.arcs.in.exists? }
  if start_place && end_place
    rgl = to_rgl
    places.each do |p|
      msgs << "start place can not reach #{p.name}" unless rgl.path?(start_place.to_gid.to_s, p.to_gid.to_s)
      msgs << "#{p.name} can not reach end_place" unless rgl.path?(p.to_gid.to_s, end_place.to_gid.to_s)
    end

    transitions.each do |t|
      msgs << "start place can not reach #{t.name}" unless rgl.path?(start_place.to_gid.to_s, t.to_gid.to_s)
      msgs << "#{t.name} can not reach end_place" unless rgl.path?(t.to_gid.to_s, end_place.to_gid.to_s)
    end
  end

  if msgs.present?
    update_columns(is_valid: false, error_msg: msgs.join("\n"))
  else
    update_columns(is_valid: true, error_msg: "")
  end
end

#render_graph(wf_case = nil) ⇒ Object 



184
185
186
187
188
189
 
# File 'app/models/wf/workflow.rb', line 184

def render_graph(wf_case = nil)
  graph = to_graph(wf_case)
  path = Rails.root.join("tmp", "#{id}.svg")
  graph.output(svg: path)
  File.read(path)
end

#to_graph(wf_case = nil, base = nil) ⇒ Object 



69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
 
# File 'app/models/wf/workflow.rb', line 69

def to_graph(wf_case = nil, base = nil)
  fontfamily = "system, -apple-system, BlinkMacSystemFont, Segoe UI, Helvetica, Arial, sans-serif, Apple Color Emoji, Segoe UI Emoji, Noto Color Emoji, Segoe UI Symbol"
  fontfamily_monospace = "SFMono-Regular, Consolas, Liberation Mono, Menlo, Courier, monospace"
  graph = base || GraphViz.new(name, type: :digraph, rankdir: "LR", splines: true, ratio: :auto)

  free_token_places = if wf_case
    wf_case.tokens.free.map(&:place_id)
  else
    []
  end
  pg_mapping = {}
  places.order("place_type ASC").each do |p|
    if p.start?
      fillcolor = "#ffe7ba"
      textcolor = "#fa8c16"
      shape     = :doublecircle
    elsif p.end?
      fillcolor = "#dff2ef"
      textcolor = "#29c0b1"
      shape     = :doublecircle
    else
      fillcolor = "#fbdbe1"
      textcolor = "#ff3366"
      shape     = :circle
    end

    token_count = free_token_places.count(p.id)
    if token_count >= 1
      label  = "&bull;"
      xlabel = nil
      fontsize = 25
    else
      label = p.name
      xlabel = nil
    end

    pg = graph.add_nodes(p.graph_id,
                         label: label,
                         xlabel: xlabel,
                         shape: shape,
                         fixedsize: true,
                         style: :filled,
                         fontname: fontfamily,
                         fontcolor: textcolor,
                         fontsize: fontsize,
                         color: fillcolor,
                         fillcolor: fillcolor,
                         href: Wf::Engine.routes.url_helpers.edit_workflow_place_path(self, p))
    pg_mapping[p] = pg
  end

  tg_mapping = {}
  transitions.each do |t|
    peripheries = if t.multiple_instance?
      3
    else
      1
    end
    tg = graph.add_nodes(t.graph_id, label: t.name, shape: :box, style: :filled, fillcolor: "#d6ddfa", color: "#d6ddfa",
                                     fontcolor: "#2c50ed", fontname: fontfamily, peripheries: peripheries,
                                     href: Wf::Engine.routes.url_helpers.edit_workflow_transition_path(self, t))
    tg_mapping[t] = tg
    # NOTICE: if sub_workflow is transition's workflow, then graph will loop infinite, this is valid for workflow definition.
    next unless t.is_sub_workflow? && t.sub_workflow != t.workflow

    sub_graph = graph.add_graph("cluster#{t.sub_workflow_id}", rankdir: "LR", splines: true, ratio: :auto)
    sub_graph[:label] = t.sub_workflow.name
    sub_graph[:style] = :dashed
    sub_graph[:color] = :lightgrey
    # TODO: detect related case for sub workflow.
    t.sub_workflow.to_graph(nil, sub_graph)
    graph.add_edges(tg, t.sub_workflow.places.start.first.graph_id, style: :dashed, dir: :both)
  end

  arcs.order("direction desc").each do |arc|
    label = if arc.guards_count > 0
      arc.guards.map(&:inspect).join(" & ")
    else
      ""
    end
    if arc.in?
      graph.add_edges(
        pg_mapping[arc.place],
        tg_mapping[arc.transition],
        label: label,
        weight: 1,
        labelfloat: false,
        labelfontcolor: :red,
        arrowhead: :vee,
        fontsize: 10,
        color: "#53585c",
        fontcolor: "#53585c",
        fontname: fontfamily_monospace,
        href: Wf::Engine.routes.url_helpers.edit_workflow_arc_path(self, arc)
      )
    else
      graph.add_edges(
        tg_mapping[arc.transition],
        pg_mapping[arc.place],
        label: label,
        weight: 1,
        labelfloat: false,
        labelfontcolor: :red,
        arrowhead: :vee,
        fontsize: 10,
        color: "#53585c",
        fontcolor: "#53585c",
        fontname: fontfamily_monospace,
        href: Wf::Engine.routes.url_helpers.edit_workflow_arc_path(self, arc)
      )
    end
  end
  graph
end

#to_rgl ⇒ Object 



191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
 
# File 'app/models/wf/workflow.rb', line 191

def to_rgl
  graph = RGL::DirectedAdjacencyGraph.new
  places.order("place_type ASC").each do |p|
    graph.add_vertex(p.to_gid.to_s)
  end

  transitions.each do |t|
    graph.add_vertex(t.to_gid.to_s)
  end

  arcs.order("direction desc").each do |arc|
    if arc.in?
      graph.add_edge(arc.place.to_gid.to_s, arc.transition.to_gid.to_s)
    else
      graph.add_edge(arc.transition.to_gid.to_s, arc.place.to_gid.to_s)
    end
  end
  graph
end