Script para crear un grafico dot de graphviz a a partir de un nodelist de fido de la Zona4

node2dot.py

#!/bin/env python3
import csv
import sys

if len(sys.argv) < 2:
    print("Uso: python3 node2dot.py <archivo_nodelist>")
    sys.exit(1)

nodelist_file = sys.argv[1]
zona = "4"

nodes = {}
node_types = {}
edges = []

current_region = None
current_host = None
zona_found = False

with open(nodelist_file, newline="", encoding="utf-8") as f:
    reader = csv.reader(f)
    for row in reader:
        if not row or row[0].startswith(";"):
            continue

        # Zona
        if row[0].startswith("Zone") and row[1] == zona:
            zona_found = True
            nodes[zona] = f"ZONA {zona}\n({row[4].replace('_',' ')})"
            node_types[zona] = "zona"
            continue

        if not zona_found:
            continue

        # Region
        if row[0].startswith("Region"):
            current_region = f"{zona}:{row[1]}"
            current_host = None  # reiniciar host al entrar en región
            region_label = f"{current_region}\n({row[2].replace('_',' ')})"
            nodes[current_region] = region_label
            node_types[current_region] = "region"
            edges.append((zona, current_region))
            continue

        # Host
        if row[0].startswith("Host"):
            current_host = f"{zona}:{row[1]}"
            host_label = f"{current_host}\n({row[2].replace('_',' ')})\n({row[4].replace('_',' ')})"
            nodes[current_host] = host_label
            node_types[current_host] = "host"

            # verificar si existe nodo /1 en esta región
            entry_node = f"{current_region}/1"
            if entry_node in nodes:
                edges.append((entry_node, current_host))
            else:
                edges.append((current_region, current_host))
            continue

        # Nodos (pueden depender de host o región)
        if row[0] in ("Pvt", "Hold") or row[0] == "":
            num = row[1]
            name = row[2].replace("_"," ")
            person = row[4].replace("_"," ") if len(row) > 4 else ""

            if current_host:
                node_addr = f"{current_host}/{num}"
                parent = current_host
            else:
                node_addr = f"{current_region}/{num}"
                parent = current_region

            label_lines = [f"{node_addr}", f"{name}"]
            if person:
                label_lines.append(f"({person})")
            node_label = "\n".join(label_lines)

            nodes[node_addr] = node_label
            if row[0] == "Pvt":
                node_types[node_addr] = "pvt"
            elif row[0] == "Hold":
                node_types[node_addr] = "hold"
            else:
                node_types[node_addr] = "pvt"

            edges.append((parent, node_addr))

# Colores pastel
color_map = {
    "zona": "lightblue",
    "region": "palegreen",
    "host": "lightpink",
    "pvt": "lightyellow",
    "hold": "lightcoral"
}

print("<graphviz>")
print("digraph NODOS {")
print("node [shape=tab, style=filled]")
print("rankdir=LR\n")

for addr, label in nodes.items():
    node_type = node_types.get(addr, "pvt")
    fill = color_map.get(node_type, "lightyellow")
    print(f'"{addr}" [label="{label}", fillcolor={fill}]')

for parent, child in edges:
    print(f'"{parent}" -> "{child}"')

print("}")
print("</graphviz>")