compose-viz/compose_viz/graph.py

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2022-05-16 18:57:14 +02:00
import graphviz
from compose_viz.compose import Compose
def apply_vertex_style(type) -> dict:
style = {
'service': {
'shape': 'component',
},
'volume': {
'shape': 'folder',
},
'network': {
'shape': 'pentagon',
},
'port': {
'shape': 'circle',
},
}
return style[type]
def apply_edge_style(type) -> dict:
style = {
'ports': {
'style': 'solid',
},
'links': {
'style': 'solid',
},
'volumes': {
'style': 'dashed',
},
'depends_on': {
'style': 'dotted',
}
}
return style[type]
class Graph:
def __init__(self, compose: Compose, filename: str) -> None:
self.dot = graphviz.Digraph()
self.dot.attr('graph', background='#ffffff', pad='0.5', ratio='fill')
self.compose = compose
self.filename = filename
def add_vertex(self, name: str, type: str) -> None:
self.dot.node(name, **apply_vertex_style(type))
def add_edge(self, head: str, tail: str, type: str) -> None:
self.dot.edge(head, tail, **apply_edge_style(type))
def render(self, format: str, cleanup: bool = True) -> None:
for service in self.compose.services:
self.add_vertex(service.name, 'service')
for network in service.networks:
self.add_vertex("net#" + network, 'network')
self.add_edge(service.name, "net#" + network, 'links')
for volume in service.volumes:
self.add_vertex(volume, 'volume')
self.add_edge(service.name, volume, 'links')
for port in service.ports:
self.add_vertex(port, 'port')
self.add_edge(service.name, port, 'ports')
for depends_on in service.depends_on:
self.dot.edge(depends_on, service.name, 'depends_on')
self.dot.render(outfile=self.filename, format=format, cleanup=cleanup)