diff --git a/modules/visual_route.py b/modules/visual_route.py index 1d2163f..f727bf1 100644 --- a/modules/visual_route.py +++ b/modules/visual_route.py @@ -9,6 +9,10 @@ from dotenv import load_dotenv load_dotenv() +TRANSIT_COMMUNITIES = set(filter(None, os.getenv('BGP_COMMUNITIES_TRANSIT', '').split(','))) +IX_COMMUNITIES = set(filter(None, os.getenv('BGP_COMMUNITIES_IX', '').split(','))) +CUSTOMER_COMMUNITIES = set(filter(None, os.getenv('BGP_COMMUNITIES_CUSTOMER', '').split(','))) + API_URL = os.getenv('BGP_API_URL', 'http://192.168.5.16:5000/bgp-route/lookup') AS_NAME_CACHE = {} AS_NAME_WRAP_WIDTH = 25 @@ -56,12 +60,10 @@ def _parse_bgp_paths_to_graph(bgp_data: str) -> dict: prefix_match = re.search(r"BGP routing table entry for ([\w:./-]+)", bgp_data) prefix = prefix_match.group(1) if prefix_match else "Unknown Prefix" lines = bgp_data.split('\n') - start_index = -1 try: start_index = next(i for i, line in enumerate(lines) if "Paths:" in line) + 1 except StopIteration: - print("DEBUG: 'Paths:' header not found. Trying fallback parsing method.") try: header_line_index = next(i for i, line in enumerate(lines) if "BGP routing table entry for" in line) start_index = header_line_index + 1 @@ -69,10 +71,8 @@ def _parse_bgp_paths_to_graph(bgp_data: str) -> dict: start_index += 1 except StopIteration: return {"nodes": [], "edges": []} - - if start_index == -1 or start_index >= len(lines): + if start_index >= len(lines): return {"nodes": [], "edges": []} - path_blocks, current_block = [], [] for line in lines[start_index:]: stripped_line = line.strip() @@ -85,8 +85,12 @@ def _parse_bgp_paths_to_graph(bgp_data: str) -> dict: current_block.append(line) if current_block: path_blocks.append(current_block) - all_paths, best_path_asns = [], [] + all_paths_info, best_path_info = [], None for block in path_blocks: + block_text = "\n".join(block) + block_text_lower = block_text.lower() + is_best = 'best' in block_text_lower + is_multipath = 'multipath' in block_text_lower path_line = block[0] if "From:" in path_line and len(block) > 1: as_path_line_candidates = [l for l in block if re.search(r'\b\d+\b', l)] @@ -96,104 +100,111 @@ def _parse_bgp_paths_to_graph(bgp_data: str) -> dict: if match: clean_path_line = clean_path_line[:match.start()] path_asns_raw = re.findall(r'\b(\d+)\b', clean_path_line) path_asns = list(dict.fromkeys(path_asns_raw)) - if path_asns not in all_paths: all_paths.append(path_asns) - if 'best' in "\n".join(block).lower() and not best_path_asns: - best_path_asns = path_asns + local_pref_match = re.search(r'localpref (\d+)', block_text) + local_pref = int(local_pref_match.group(1)) if local_pref_match else None + next_hop_match = re.search(r'^\s*([\da-fA-F:.]+)\s+from', block_text, re.MULTILINE) + next_hop = next_hop_match.group(1) if next_hop_match else None + community_match = re.search(r'Large Community: ([\d:]+)', block_text) + community = community_match.group(1) if community_match else None + category = 'other' + if community: + if community in TRANSIT_COMMUNITIES: category = 'transit' + elif community in IX_COMMUNITIES: category = 'ix' + elif community in CUSTOMER_COMMUNITIES: category = 'customer' + path_info = {"asns": path_asns, "local_pref": local_pref, "next_hop": next_hop, "is_best": is_best, "is_multipath": is_multipath, "community": community, "category": category} + all_paths_info.append(path_info) + if is_best and not best_path_info: + best_path_info = path_info - if not all_paths and best_path_asns is not None and not best_path_asns: - if any('Local' in block[0] for block in path_blocks): - all_paths.append([]) - if 'best' in bgp_data: best_path_asns = [] - if not all_paths and best_path_asns is not None and not best_path_asns: - all_paths.append([]) - all_asns_in_graph = {asn for path in all_paths for asn in path} + all_asns_in_graph = {asn for path in all_paths_info for asn in path['asns']} if all_asns_in_graph: _bulk_get_as_names(list(all_asns_in_graph)) - ordered_paths = [] - if best_path_asns is not None: ordered_paths.append(best_path_asns) - for path in all_paths: - if path != best_path_asns: ordered_paths.append(path) - node_lanes, node_levels, max_level = {}, {}, 0 - Y_SEPARATION, X_SEPARATION = 110, 280 - y_lane_alternator = 1 - for i, path in enumerate(ordered_paths): - lane_y = 0 - if i > 0 or best_path_asns is None: - lane_y = y_lane_alternator * Y_SEPARATION - if y_lane_alternator > 0: y_lane_alternator *= -1 - else: y_lane_alternator = (y_lane_alternator * -1) + 1 - full_chain = [ROUTER_NAME] + [f"AS{asn}" for asn in path] - for node_id in full_chain: - if node_id not in node_lanes: node_lanes[node_id] = lane_y - for path in all_paths: - full_chain = [ROUTER_NAME] + [f"AS{asn}" for asn in path] - for level, node_id in enumerate(full_chain): - node_levels[node_id] = max(node_levels.get(node_id, 0), level) - max_level = max(max_level, level) - node_levels[prefix] = max_level + 1 - if prefix not in node_lanes: node_lanes[prefix] = 0 - nodes, edges = [], [] - best_path_node_ids = {f"AS{asn}" for asn in best_path_asns} | {ROUTER_NAME, prefix} if best_path_asns is not None else {ROUTER_NAME, prefix} - all_node_ids = set(node_levels.keys()) - for node_id in sorted(list(all_node_ids)): - color = '#FADBD8' if node_id in best_path_node_ids else '#D6DBDF' - label, is_endpoint = node_id, (node_id == ROUTER_NAME or node_id == prefix) - if node_id.startswith('AS'): - asn_number = node_id[2:] - as_name = AS_NAME_CACHE.get(asn_number, "") - if as_name: - wrapped_name = '\n'.join(textwrap.wrap(as_name, width=AS_NAME_WRAP_WIDTH)) - label = f"{node_id}\n{wrapped_name}" - else: - label = f"{node_id}" - elif is_endpoint: - label = f"{node_id}" - nodes.append({"id": node_id, "label": label, "color": color, "x": node_levels[node_id] * X_SEPARATION, "y": node_lanes.get(node_id, 0), "fixed": True}) - edge_map = {} - def add_edge(u, v, color, width, dashes=False): - edge_tuple = tuple(sorted((u, v))) - if u == v: return - if edge_tuple not in edge_map or color == '#C0392B': - edge_map[edge_tuple] = {"from": u, "to": v, "color": color, "width": width, "dashes": dashes} - if best_path_asns is not None: - path_chain = [ROUTER_NAME] + [f"AS{asn}" for asn in best_path_asns] + [prefix] - for i in range(len(path_chain) - 1): add_edge(path_chain[i], path_chain[i+1], '#C0392B', 3, False) - for path in all_paths: - if path == best_path_asns: continue - path_chain = [ROUTER_NAME] + [f"AS{asn}" for asn in path] + [prefix] - for i in range(len(path_chain) - 1): add_edge(path_chain[i], path_chain[i+1], '#2C3E50', 1, True) - edges = list(edge_map.values()) - return {"nodes": nodes, "edges": edges} + ordered_paths = sorted(all_paths_info, key=lambda p: (not p['is_best'], not p['is_multipath'])) + + nodes, edges = [], [] + X_SEPARATION, Y_SEPARATION = 300, 200 + max_path_len = max(len(p['asns']) for p in ordered_paths) if ordered_paths else 0 + nodes.append({"id": ROUTER_NAME, "label": f"{ROUTER_NAME}", "color": '#FADBD8', "x": 0, "y": 0, "fixed": True, "path_category": "global", "is_active": True}) + nodes.append({"id": prefix, "label": f"{prefix}", "color": '#FADBD8', "x": (max_path_len + 1) * X_SEPARATION, "y": 0, "fixed": True, "path_category": "global", "is_active": True}) + + y_pos_counter_up, y_pos_counter_down = 1, 1 + for i, path_info in enumerate(ordered_paths): + lane_y = 0 + if not path_info['is_best']: + if y_pos_counter_up <= y_pos_counter_down: + lane_y = y_pos_counter_up * Y_SEPARATION + y_pos_counter_up += 1 + else: + lane_y = -y_pos_counter_down * Y_SEPARATION + y_pos_counter_down += 1 + + style, is_active_path = {}, False + if path_info['is_best']: + style = {"node_color": '#FADBD8', "edge_color": '#C0392B', "width": 3, "dashes": False, "path_type": " (best)"} + is_active_path = True + elif path_info['is_multipath']: + style = {"node_color": '#FDEBD0', "edge_color": '#F39C12', "width": 2, "dashes": False, "path_type": " (multipath)"} + is_active_path = True + else: + style = {"node_color": '#D6DBDF', "edge_color": '#2C3E50', "width": 1, "dashes": True, "path_type": ""} + is_active_path = False + + path_node_ids = [] + for j, asn in enumerate(path_info['asns']): + unique_node_id = f"AS{asn}-{i}" + path_node_ids.append(unique_node_id) + as_name = AS_NAME_CACHE.get(asn, "") + wrapped_name = '\n'.join(textwrap.wrap(as_name, width=AS_NAME_WRAP_WIDTH)) if as_name else "" + + base_label = f"AS{asn}" + if j == 0 and path_info['local_pref'] is not None: + base_label += f" (LP: {path_info['local_pref']})" + + label = f"{base_label}\n{wrapped_name}" + + if j == 0 and path_info['next_hop']: + label += f"\nNext Hop: {path_info['next_hop']}{style['path_type']}" + + nodes.append({"id": unique_node_id, "label": label, "color": style['node_color'], "x": (j + 1) * X_SEPARATION, "y": lane_y, "fixed": True, "path_category": path_info['category'], "is_active": is_active_path}) + + full_chain = [ROUTER_NAME] + path_node_ids + [prefix] + smooth_config = {"enabled": True, "type": "cubicBezier", "forceDirection": "horizontal", "roundness": 0.85} + + for j in range(len(full_chain) - 1): + edges.append({ + "from": full_chain[j], + "to": full_chain[j+1], + "color": style['edge_color'], + "width": style['width'], + "dashes": style['dashes'], + "path_category": path_info['category'], + "is_active": is_active_path, + "smooth": smooth_config, + }) + + return {"nodes": nodes, "edges": edges} def generate_visual_route_graph(ip_address_str: str) -> dict: if not ip_address_str: return {"error": "IP address is required."} - - address_to_lookup = "" - ip_version = "" - + address_to_lookup, ip_version = "", "" if '/' in ip_address_str: try: net_obj = ipaddress.ip_network(ip_address_str, strict=False) - ip_version = f"ipv{net_obj.version}" - address_to_lookup = net_obj.with_prefixlen + ip_version, address_to_lookup = f"ipv{net_obj.version}", net_obj.with_prefixlen except ValueError: return {"error": f"Invalid CIDR notation: {ip_address_str}"} else: try: ip_obj = ipaddress.ip_address(ip_address_str) - ip_version = f"ipv{ip_obj.version}" - address_to_lookup = ip_address_str + ip_version, address_to_lookup = f"ipv{ip_obj.version}", ip_address_str except ValueError: return {"error": f"Invalid IP address: {ip_address_str}"} - bgp_data = _get_bgp_data(address_to_lookup, ip_version) if not bgp_data: return {"error": f"Failed to retrieve BGP data for {address_to_lookup}."} - graph_data = _parse_bgp_paths_to_graph(bgp_data) if not graph_data.get("nodes"): return {"error": "Could not parse valid AS paths from the API response."} - return graph_data \ No newline at end of file