aws-cloudformation / cfn-lint
Duplication

Places in code with 6 or more lines that are exactly the same.

Intro
  • For duplication, we look at places in code where there are 6 or more lines of code that are exactly the same.
  • Before duplication is calculated, the code is cleaned to remove empty lines, comments, and frequently duplicated constructs such as imports.
  • You should aim at having as little as possible (<5%) of duplicated code as high-level of duplication can lead to maintenance difficulties, poor factoring, and logical contradictions.
Learn more...
Duplication Overall
  • 11% duplication:
    • 12,455 cleaned lines of cleaned code (without empty lines, comments, and frequently duplicated constructs such as imports)
    • 1,478 duplicated lines
  • 126 duplicates
system11% (1,478 lines)
Duplication per Extension
py11% (1,478 lines)
Duplication per Component (primary)
src/cfnlint/rules/resources13% (631 lines)
src/cfnlint/rules/parameters30% (194 lines)
src/cfnlint/rules/functions13% (168 lines)
src/cfnlint/decode18% (159 lines)
src/cfnlint5% (142 lines)
src/cfnlint/rules/outputs18% (48 lines)
src/cfnlint/rules7% (32 lines)
src/cfnlint/rules/conditions11% (28 lines)
src/cfnlint/rules/metadata24% (18 lines)
scripts4% (18 lines)
src/cfnlint/rules/mappings7% (14 lines)
src/cfnlint/rules/templates13% (14 lines)
src/cfnlint/rules/custom5% (12 lines)
src/cfnlint/formatters0% (0 lines)
src/cfnlint/data0% (0 lines)
src/cfnlint/data/Serverless0% (0 lines)
src/cfnlint/data/AdditionalSpecs0% (0 lines)
src/cfnlint/data/CloudSpecs0% (0 lines)
src/cfnlint/data/ExtendedSpecs0% (0 lines)
src/cfnlint/decorators0% (0 lines)
ROOT0% (0 lines)

Duplication Between Components (50+ lines)

G src/cfnlint/rules/parameters src/cfnlint/rules/parameters src/cfnlint/rules/resources src/cfnlint/rules/resources src/cfnlint/rules/parameters--src/cfnlint/rules/resources 187 src/cfnlint/rules/functions src/cfnlint/rules/functions src/cfnlint/rules/functions--src/cfnlint/rules/resources 88

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Show more details on duplication between components...
Longest Duplicates
The list of 20 longest duplicates.
See data for all 126 duplicates...
Size#FoldersFilesLinesCode
37 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/parameters
AllowedPattern.py
AllowedValue.py
 72:120 (43%)
69:117 (44%)
 view
34 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedPattern.py
AllowedValue.py
 71:114 (45%)
45:89 (61%)
 view
29 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListDuplicates.py
ListDuplicatesAllowed.py
 38:74 (42%)
38:74 (42%)
 view
29 x 2 src/cfnlint/decode
src/cfnlint/decode
cfn_json.py
cfn_json.py
 410:438 (6%)
549:577 (6%)
 view
20 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedPattern.py
AllowedPattern.py
 92:120 (23%)
87:114 (27%)
 view
20 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedValue.py
AllowedValue.py
 89:117 (24%)
61:89 (36%)
 view
20 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedValue.py
AllowedPattern.py
 89:117 (24%)
87:114 (27%)
 view
20 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedPattern.py
AllowedValue.py
 92:120 (23%)
61:89 (36%)
 view
20 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
JsonSize.py
ListSize.py
 104:131 (20%)
73:100 (28%)
 view
18 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/parameters
AllowedPattern.py
AllowedValue.py
 21:42 (20%)
21:42 (21%)
 view
18 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedPattern.py
ValueRefGetAtt.py
 89:114 (24%)
207:233 (10%)
 view
18 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedValue.py
ValueRefGetAtt.py
 91:117 (21%)
207:233 (10%)
 view
18 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
AllowedPattern.py
ValueRefGetAtt.py
 94:120 (20%)
207:233 (10%)
 view
18 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListDuplicates.py
ListDuplicatesAllowed.py
 77:103 (26%)
78:104 (26%)
 view
18 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedValue.py
ValueRefGetAtt.py
 63:89 (32%)
207:233 (10%)
 view
15 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListDuplicatesAllowed.py
ListSize.py
 81:104 (21%)
78:100 (21%)
 view
15 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
JsonSize.py
ListDuplicatesAllowed.py
 109:131 (15%)
81:104 (21%)
 view
15 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListDuplicates.py
ListSize.py
 80:103 (22%)
78:100 (21%)
 view
15 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
JsonSize.py
ListDuplicates.py
 109:131 (15%)
80:103 (22%)
 view
15 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
NumberSize.py
StringSize.py
 78:100 (21%)
69:91 (24%)
 view
Duplicated Units
The list of top 12 duplicated units.
See data for all 12 unit duplicates...
Size#FoldersFilesLinesCode
19 x 2 src/cfnlint/rules/parameters
src/cfnlint/rules/parameters
AllowedValue.py
AllowedPattern.py
 0:0 
0:0 
 view
19 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedValue.py
AllowedPattern.py
 0:0 
0:0 
 view
10 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListDuplicates.py
ListDuplicatesAllowed.py
 0:0 
0:0 
 view
10 x 2 scripts
scripts
update_specs_from_pricing.py
update_specs_services_from_ssm.py
 0:0 
0:0 
 view
9 x 2 src/cfnlint/rules/functions
src/cfnlint/rules/functions
Join.py
Sub.py
 0:0 
0:0 
 view
7 x 5 src/cfnlint/rules/parameters
src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedValue.py
AllowedPattern.py
AllowedValue.py
AllowedPattern.py
ValueRefGetAtt.py
 0:0 
0:0 
0:0 
0:0 
0:0 
 view
7 x 5 src/cfnlint/rules/parameters
src/cfnlint/rules/parameters
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
AllowedValue.py
AllowedPattern.py
AllowedValue.py
AllowedPattern.py
ValueRefGetAtt.py
 0:0 
0:0 
0:0 
0:0 
0:0 
 view
6 x 2 src/cfnlint/rules/functions
src/cfnlint/rules/resources/properties
DynamicReferenceSecureString.py
ValuePrimitiveType.py
 0:0 
0:0 
 view
6 x 4 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListSize.py
ListDuplicates.py
ListDuplicatesAllowed.py
JsonSize.py
 0:0 
0:0 
0:0 
0:0 
 view
6 x 4 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
ListSize.py
ListDuplicates.py
ListDuplicatesAllowed.py
JsonSize.py
 0:0 
0:0 
0:0 
0:0 
 view
6 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
StringSize.py
NumberSize.py
 0:0 
0:0 
 view
6 x 2 src/cfnlint/rules/resources/properties
src/cfnlint/rules/resources/properties
StringSize.py
NumberSize.py
 0:0 
0:0 
 view