Conditions | 12 |
Total Lines | 67 |
Code Lines | 51 |
Lines | 0 |
Ratio | 0 % |
Changes | 0 |
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
Complex classes like vlan_pool.update_database() often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
1 | import datetime |
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55 | def update_database(mongo: Mongo): |
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56 | """Update database""" |
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57 | db = mongo.client[mongo.db_name] |
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58 | intf_documents = db.interface_details.find() |
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59 | evc_documents = db.evcs.find({"archived": False}) |
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60 | |||
61 | evc_intf = defaultdict(str) |
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62 | evc_tags = defaultdict(set) |
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63 | |||
64 | for evc in evc_documents: |
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65 | tag_a = evc["uni_a"].get("tag") |
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66 | if tag_a: |
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67 | intf_id = evc["uni_a"]["interface_id"] |
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68 | if tag_a["value"] in evc_tags[intf_id] and isinstance(tag_a["value"], int): |
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69 | print(f"Error: Detected duplicated {tag_a['value']} TAG" |
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70 | f" in EVCs {evc['id']} and {evc_intf[intf_id+str(tag_a['value'])]}" |
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71 | f" in interface {intf_id}") |
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72 | sys.exit(1) |
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73 | evc_tags[intf_id].add(tag_a["value"]) |
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74 | evc_intf[intf_id+str(tag_a["value"])] = evc["id"] |
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75 | |||
76 | tag_z = evc["uni_z"].get("tag") |
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77 | if tag_z: |
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78 | intf_id = evc["uni_z"]["interface_id"] |
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79 | if tag_z["value"] in evc_tags[intf_id] and isinstance(tag_z["value"], int): |
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80 | print(f"Error: Detected duplicated {tag_z['value']} TAG" |
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81 | f" in EVCs {evc['id']} and {evc_intf[intf_id+str(tag_z['value'])]}" |
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82 | f" in interface {intf_id}") |
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83 | sys.exit(1) |
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84 | evc_tags[intf_id].add(tag_z["value"]) |
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85 | evc_intf[intf_id+str(tag_z["value"])] = evc["id"] |
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86 | |||
87 | intf_count = 0 |
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88 | for document in intf_documents: |
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89 | avoid_tags = evc_tags.pop(document["id"], set()) |
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90 | if document.get("available_vlans") is None: |
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91 | continue |
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92 | ranges = get_range(document["available_vlans"], avoid_tags) |
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93 | result = db.interface_details.update_one( |
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94 | {"id": document["id"]}, |
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95 | { |
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96 | "$set": |
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97 | { |
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98 | "available_tags": {"vlan": ranges}, |
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99 | "tag_ranges": {"vlan": DEFAULT_TAG_RANGES} |
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100 | }, |
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101 | "$unset": {"available_vlans": ""} |
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102 | } |
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103 | ) |
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104 | intf_count += result.modified_count |
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105 | |||
106 | evc_intf_count = 0 |
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107 | for intf_id, avoid_tags in evc_tags.items(): |
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108 | available_tags = generate_ranges(list(avoid_tags)) |
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109 | utc_now = datetime.datetime.utcnow() |
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110 | result = db.interface_details.insert_one({ |
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111 | "_id": intf_id, |
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112 | "id": intf_id, |
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113 | "inserted_at": utc_now, |
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114 | "updated_at": utc_now, |
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115 | "available_tags": {"vlan": available_tags}, |
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116 | "tag_ranges": {"vlan": DEFAULT_TAG_RANGES}, |
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117 | }) |
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118 | if result: |
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119 | evc_intf_count += 1 |
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120 | |||
121 | print(f"{intf_count} documents modified. {evc_intf_count} documents inserted") |
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122 | |||
211 |